[cdac] add v2 ExecutionManager contract for NibbleMap change by max-charlamb · Pull Request #1 · max-charlamb/runtime

max-charlamb · 2024-11-07T01:37:24Z

Depends on: dotnet#108939

Changes

Bumps ExecutionManager contract version to 2
Refactors ExecutionManager related files into folder.
Factors out nearly all of ExecutionManager_1 to ExecutionManagerBase
Adds ExecutionManager_2
Runs tests for both versions of contract.

...gnostics.DataContractReader.Contracts/Contracts/ExecutionManager/Helpers/NibbleMapHelpers.cs

src/native/managed/cdacreader/tests/ExecutionManagerTests/NibbleMapTestBuilder.cs

elinor-fung

Were you also able to test out the E2E combined with your runtime nibble map change? Well, the part of the E2E that we have working - for JIT-ed methods, the method names should display correctly for something like !clrstack (should go through the ExecutionManager and the nibble map in order to get the method corresponding to the IPs).

src/native/managed/cdacreader/tests/ExecutionManagerTests/ExecutionManagerTests.cs

...ft.Diagnostics.DataContractReader.Contracts/Contracts/ExecutionManager/ExecutionManager_1.cs

...ft.Diagnostics.DataContractReader.Contracts/Contracts/ExecutionManager/ExecutionManager_2.cs

...t.Diagnostics.DataContractReader.Contracts/Contracts/ExecutionManager/Helpers/NibbleMap_2.cs

elinor-fung · 2024-11-07T23:05:01Z

...t.Diagnostics.DataContractReader.Contracts/Contracts/ExecutionManager/Helpers/NibbleMap_2.cs

+
+namespace Microsoft.Diagnostics.DataContractReader.ExecutionManagerHelpers;
+
+// CoreCLR nibblemap with O(1) lookup time.


Update docs/design/datacontracts/ExecutionManager.md to add version 2 with information about this nibble map?

Added some docs and an example. I'm not sure the best way to add docs for the second version. I added a section below explaining the differences and the new algorithm.

...agnostics.DataContractReader.Contracts/Contracts/ExecutionManager/ExecutionManagerFactory.cs

max-charlamb · 2024-11-08T15:36:47Z

Were you also able to test out the E2E combined with your runtime nibble map change? Well, the part of the E2E that we have working - for JIT-ed methods, the method names should display correctly for something like !clrstack (should go through the ExecutionManager and the nibble map in order to get the method corresponding to the IPs).

Yes, I used WinDbg and debugged that with VS to verify that !sos clrstack has the correct stack (function names) and that the new nibblemap is invoked.

* JIT: Introduce `LclVarDsc::lvIsMultiRegDest` With recent work to expand returned promoted locals into `FIELD_LIST` the only "whole references" of promoted locals we should see is when stored from a multi-reg node. This is the only knowledge the backend should need for correctness purposes, so introduce a bit to track this property, and switch the backend to check this instead. The existing `lvIsMultiRegRet` is essentially this + whether the local is returned. We should be able to remove this, but it is currently used for some heuristics in old promotion, so keep it around for now. * JIT: Add some more constant folding in lowering Add folding for shifts and certain binops that are now getting produced late due to returned `FIELD_LIST` nodes. win-arm64 example: ```csharp [MethodImpl(MethodImplOptions.NoInlining)] static ValueTask<byte> Foo() { return new ValueTask<byte>(123); } ``` ```diff G_M17084_IG02: ;; offset=0x0008 mov x0, xzr - mov w1, #1 - mov w2, wzr - mov w3, dotnet#123 - orr w2, w2, w3, LSL dotnet#16 - orr w1, w2, w1, LSL dotnet#24 - ;; size=24 bbWeight=1 PerfScore 4.00 + mov w1, #0x17B0000 + ;; size=8 bbWeight=1 PerfScore 1.00 ``` * Feedback

…otnet#114227) Presence of `.cctor` in `Thread` can cause circular dependency if Lock needs to block while Thread .cctor has not run yet. 1. Lock needs to wait on a WaitHandle 2. WaitHandle needs Thread.CurrentThread 3. if Thread's .cctor has not run yet, it needs to run. (it is unusual for this to be the first use of Thread, but the activation pattern in dotnet#113949 made it possible) 4. .cctor needs to take a Lock, so we go to `#1` Fixes: dotnet#113949

…more APIs) (#1…" (dotnet#120138) This reverts commit 1b4eff2. Fixes dotnet#120137

…ds from dotnet#27912 (Flow System.Text.Rune through more APIs)) (dotnet#120145) * Fix tests from dotnet#117168 * Add `SyncTextWriter` overloads as well * Add missing overloads to BroadcastingTextWriter * Reapply "Add methods from dotnet#27912 (Flow System.Text.Rune through more APIs) (#1…" (dotnet#120138) This reverts commit be80737. * Override the TextWrite Rune overloads in IndentedTextWriter --------- Co-authored-by: Tarek Mahmoud Sayed <tarekms@microsoft.com>

…er (dotnet#123735) From discussion, opting into enabling the crash chaining is more correct. <s>The previously registered signal action/handler aren't guaranteed to return, so we lose out on notifying shutdown and creating a dump in those cases. Specifically, PROCCreateCrashDumpIfEnabled would be the last chance to provide the managed context for the thread that crashed. e.g. On Android CoreCLR, it seems that, by default, signal handlers are already registered by Android's runtime (/apex/com.android.runtime/bin/linker64 + /system/lib64/libandroid_runtime.so). Whenever an unhandled synchronous fault occurs, the previously registered handler will not return back to invoke_previous_action and aborts the thread itself, so PROCCreateCrashDumpIfEnabled will not be hit.</s> ## Sigsegv behavior Android CoreCLR vs other platforms ### Android CoreCLR When intentionally writing to NULL (sigsegv) on Android CoreCLR, the previously registered signal handler goes down this path https://github.com/dotnet/runtime/blob/40e8c73b8f3b5f478a9bf03cf55c71d0608a8855/src/coreclr/pal/src/exception/signal.cpp#L454, and the thread aborts before hitting PROCNotifyProcessShutdown and PROCCreateCrashDumpIfEnabled. ### MacOS/Linux/NativeAOT(linux) On MacOS, Linux, NativeAOT (Only checked linux at time of writing), the same intentional SIGSEGV will hit https://github.com/dotnet/runtime/blob/40e8c73b8f3b5f478a9bf03cf55c71d0608a8855/src/coreclr/pal/src/exception/signal.cpp#L431-L448 instead because there is no previously registered signal handler. In those cases, PROCCreateCrashDumpIfEnabled is hit and managed callstacks are captured in the dump. ## History investigation From a github history dive, I didn't spot anything in particular requiring the previous signal handler to be invoked before PROCNotifyProcessShutdown + PROCCreateCrashDumpIfEnabled. PROCNotifyProcessShutdown was first introduced in dotnet@1433c3f. It doesn't seem to state a particular reason for invoking it after the previous signal handler. PROCCreateCrashDumpIfEnabled was added to signal.cpp in dotnet@7f9bd2c because the PROCNotifyProcessShutdown didn't create a crash dump. It doesn't state any particular reason for being invoked after the previously registered signal handler, and was probably just placed next to PROCNotifyProcessShutdown. `invoke_previous_action` was introduced in dotnet@a740f65 and was refactoring while maintaining the order. ## Android CoreCLR behavior after swapping order Locally, I have POC changes to emit managed callstacks in Android's PROCCreateCrashDumpIfEnabled. ``` 01-28 17:26:40.951 2416 2440 F DOTNET : Native crash detected; attempting managed stack trace. 01-28 17:26:40.951 2416 2440 F DOTNET : {"stack":[ 01-28 17:26:40.951 2416 2440 F DOTNET : {"ip":"0x0","module":"0x0","offset":"0x0","name":"Program.MemSet(Void*, Int32, UIntPtr)"}, 01-28 17:26:40.951 2416 2440 F DOTNET : {"ip":"0x78d981145973","module":"0x0","offset":"0x0","name":"Program.MemSet(Void*, Int32, UIntPtr)"}, 01-28 17:26:40.951 2416 2440 F DOTNET : {"ip":"0x78d981145973","module":"0x0","offset":"0x73","name":"Program.ForceNativeSegv()"}, 01-28 17:26:40.951 2416 2440 F DOTNET : {"ip":"0x78d981141b60","module":"0x0","offset":"0x70","name":"Program.Main(System.String[])"} 01-28 17:26:40.951 2416 2440 F DOTNET : ]} 01-28 17:26:40.952 2416 2440 F DOTNET : Crash dump hook completed. --------- beginning of crash 01-28 17:26:40.952 2416 2440 F libc : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 2440 (.dot.MonoRunner), pid 2416 (ulator.JIT.Test) ..... 01-28 17:26:46.882 2921 2921 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 01-28 17:26:46.882 2921 2921 F DEBUG : Build fingerprint: 'google/sdk_gphone64_x86_64/emu64xa:16/BE2A.250530.026.D1/13818094:user/release-keys' 01-28 17:26:46.882 2921 2921 F DEBUG : Revision: '0' 01-28 17:26:46.882 2921 2921 F DEBUG : ABI: 'x86_64' 01-28 17:26:46.882 2921 2921 F DEBUG : Timestamp: 2026-01-28 17:26:41.492831700-0500 01-28 17:26:46.882 2921 2921 F DEBUG : Process uptime: 20s 01-28 17:26:46.883 2921 2921 F DEBUG : Cmdline: net.dot.Android.Device_Emulator.JIT.Test 01-28 17:26:46.883 2921 2921 F DEBUG : pid: 2416, tid: 2440, name: .dot.MonoRunner >>> net.dot.Android.Device_Emulator.JIT.Test <<< 01-28 17:26:46.883 2921 2921 F DEBUG : uid: 10219 01-28 17:26:46.883 2921 2921 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0000000000000000 01-28 17:26:46.883 2921 2921 F DEBUG : Cause: null pointer dereference 01-28 17:26:46.883 2921 2921 F DEBUG : Abort message: 'CoreCLR: previous handler for ' 01-28 17:26:46.883 2921 2921 F DEBUG : rax 0000000000000000 rbx 000078da87ffade0 rcx 0000000000000000 rdx 0000000000000001 01-28 17:26:46.884 1237 1297 I s.nexuslauncher: AssetManager2(0x78dd08cd9178) locale list changing from [] to [en-US] 01-28 17:26:46.903 2447 2594 I BugleNotifications: Creating notification input ids [CONTEXT im_entry_input="" im_notification_input="" im_settings_store_input="" im_final_input="" ] 01-28 17:26:46.905 2921 2921 F DEBUG : r8 00007ffcde5a8080 r9 34d9bb0e67871eb0 r10 000078ddb4111870 r11 0000000000000293 01-28 17:26:46.906 2921 2921 F DEBUG : r12 0000000000000001 r13 000078da87ffafa0 r14 0000000000000000 r15 000078da87ffaf18 01-28 17:26:46.906 2921 2921 F DEBUG : rdi 0000000000000000 rsi 0000000000000000 01-28 17:26:46.906 2921 2921 F DEBUG : rbp 000078da87ffac40 rsp 000078da87ffabc8 rip 000078ddb41118a2 01-28 17:26:46.906 2921 2921 F DEBUG : 2 total frames 01-28 17:26:46.906 2921 2921 F DEBUG : backtrace: 01-28 17:26:46.906 2921 2921 F DEBUG : #00 pc 000000000008f8a2 /apex/com.android.runtime/lib64/bionic/libc.so (memset_avx2+50) (BuildId: fcb82240218d1473de1e3d2137c0be35) 01-28 17:26:46.906 2921 2921 F DEBUG : #1 pc 0000000000049972 /memfd:doublemapper (deleted) (offset 0x111000) ``` Now theres a window to log managed callstacks before the original signal handler aborts and triggers a tombstone. ## Android Mono behavior Mono provides two embeddings APIs to configure signal and crash chaining https://github.com/dotnet/runtime/blob/61d3943de41e948bb0ecf871b92eb456d2dd74d8/src/mono/mono/mini/driver.c#L2864-L2894 that determine whether synchronous faults would chain https://github.com/dotnet/runtime/blob/61d3943de41e948bb0ecf871b92eb456d2dd74d8/src/mono/mono/mini/mini-runtime.c#L3892-L3903 They would only chain to the previous signal handler https://github.com/dotnet/runtime/blob/61d3943de41e948bb0ecf871b92eb456d2dd74d8/src/mono/mono/mini/mini-posix.c#L193-L210 only after attempting to walk native and managed stacks https://github.com/dotnet/runtime/blob/61d3943de41e948bb0ecf871b92eb456d2dd74d8/src/mono/mono/mini/mini-exceptions.c#L2992-L3012 ## Alternatives If there is any particular reason to preserve the order of sa_sigaction/sa_handler with respect to PROCNotifyProcessShutdown and PROCCreateCrashDumpIfEnabled for CoreCLR, a config knob can be added to allow Android CoreCLR to opt into the swapped ordering behavior. This may be in the form of config property key/values https://github.com/dotnet/runtime/blob/54ca569eb62800cdb725d776e3dd2e564028594d/src/coreclr/dlls/mscoree/exports.cpp#L237-L238 or `clrconfigvalues`. That way AndroidSDK/AndroidAppBuilder may opt-in at build-time. Given that the history of the ordering didn't reveal any problems with swapping the order, we can fallback to this behavior if the order swap causes problems down the line. The other way around is more restrictive. Should we first introduce all the overhead to enable an opt-in/opt-out config knob, and later discover that no platforms need to invoke their previous handlers before PROCNotifyProcessShutdown/PROCCreateCrashDumpIfEnabled, it seems harder to justify removing the knob.

…otnet#124642) ## Summary Fixes dotnet#123621 When a constant-folded operand appears **after** a non-constant operand in a short-circuit `&&` expression (e.g., `v == 2 && Environment.NewLine != "\r\n"`), callee inlining can leave dead local stores in the return block. The `isReturnBool` lambda in `fgFoldCondToReturnBlock` required `hasSingleStmt()`, which caused the optimization to bail out when these dead stores were present, resulting in suboptimal branching codegen. ### Changes - **`src/coreclr/jit/optimizebools.cpp`**: Relax the `hasSingleStmt()` constraint in `isReturnBool` to allow preceding statements as long as they have no globally visible side effects (`GTF_GLOBALLY_VISIBLE_SIDE_EFFECTS`). This enables `fgFoldCondToReturnBlock` to fold the conditional into a branchless return even when dead local stores from inlining remain in the block. ### Before (ARM64, `Inline_After`) ```asm cmp w0, #2 bne G_M4495_IG04 mov w0, #1 ret G_M4495_IG04: mov w0, #0 ret ``` ### After (ARM64, `Inline_After`) ```asm cmp w0, #2 cset x0, eq ret ``` ## Test plan - [x] Added regression test `Runtime_123621` covering the original issue pattern - [x] Verified `Hoisted`, `Inline_Before`, and `Inline_After` all produce identical branchless codegen (`cset` on ARM64) - [x] Verified existing `DevDiv_168744` regression test still passes - [x] Verified side-effect-ful blocks are correctly excluded from the optimization

i.e. Fold: (-(x)) == 0 -> x == 0 arm64 asmdiffs Diffs are based on <span style="color:#1460aa">436,095</span> contexts (<span style="color:#1460aa">26,618</span> MinOpts, <span style="color:#1460aa">409,477</span> FullOpts). <details> <summary>Overall (<span style="color:green">-40</span> bytes)</summary> <div style="margin-left:1em"> |Collection|Base size (bytes)|Diff size (bytes)|PerfScore in Diffs |---|--:|--:|--:| |libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch|183,146,276|<span style="color:green">-40</span>|<span style="color:green">-0.09%</span>| |benchmarks.run.linux.arm64.checked.mch|21,285,888|+0|0.00%| |smoke_tests.nativeaot.linux.arm64.checked.mch|3,003,400|+0|0.00%| </div></details> <details> <summary>FullOpts (<span style="color:green">-40</span> bytes)</summary> <div style="margin-left:1em"> |Collection|Base size (bytes)|Diff size (bytes)|PerfScore in Diffs |---|--:|--:|--:| |libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch|168,630,412|<span style="color:green">-40</span>|<span style="color:green">-0.09%</span>| |benchmarks.run.linux.arm64.checked.mch|20,953,436|+0|0.00%| |smoke_tests.nativeaot.linux.arm64.checked.mch|3,001,776|+0|0.00%| </div></details> <details> <summary>Example diffs</summary> <div style="margin-left:1em"> <details> <summary>libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch</summary> <div style="margin-left:1em"> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-1.27%</span>) : 142473.dasm - System.IO.Pipelines.Tests.BufferSegmentPoolTest:GetSegments(System.IO.Pipelines.ReadResult):System.Collections.Generic.List`1[System.Buffers.ReadOnlySequenceSegment`1[byte]] (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -53,8 +53,7 @@ G_M13215_IG02: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0001 {x0}, byre G_M13215_IG03: ; bbWeight=0.50, gcrefRegs=80002 {x1 x19}, byrefRegs=0000 {}, byref, isz asr w2, w2, dotnet#31 lsl w2, w2, #1 - add w0, w2, w0, ASR dotnet#31 - negs w0, w0 + adds w0, w2, w0, ASR dotnet#31 bne G_M13215_IG04 movz x0, #0xD1FFAB1E movk x0, #0xD1FFAB1E LSL dotnet#16 @@ -76,7 +75,7 @@ G_M13215_IG03: ; bbWeight=0.50, gcrefRegs=80002 {x1 x19}, byrefRegs=0000 mov x19, x0 ; gcrRegs +[x19] b G_M13215_IG05 - ;; size=68 bbWeight=0.50 PerfScore 6.00 + ;; size=64 bbWeight=0.50 PerfScore 5.75 G_M13215_IG04: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; gcrRegs -[x0 x19-x20] mov x20, xzr @@ -179,7 +178,7 @@ G_M13215_IG13: ; bbWeight=0, gcrefRegs=580000 {x19 x20 x22}, byrefRegs=00 b G_M13215_IG06 ;; size=12 bbWeight=0 PerfScore 0.00 -; Total bytes of code 316, prolog size 16, PerfScore 140.93, instruction count 79, allocated bytes for code 316 (MethodHash=c6bccc60) for method System.IO.Pipelines.Tests.BufferSegmentPoolTest:GetSegments(System.IO.Pipelines.ReadResult):System.Collections.Generic.List`1[System.Buffers.ReadOnlySequenceSegment`1[byte]] (FullOpts) +; Total bytes of code 312, prolog size 16, PerfScore 140.68, instruction count 78, allocated bytes for code 312 (MethodHash=c6bccc60) for method System.IO.Pipelines.Tests.BufferSegmentPoolTest:GetSegments(System.IO.Pipelines.ReadResult):System.Collections.Generic.List`1[System.Buffers.ReadOnlySequenceSegment`1[byte]] (FullOpts) ; ============================================================ Unwind Info: @@ -190,7 +189,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0 - Function Length : 79 (0x0004f) Actual length = 316 (0x00013c) + Function Length : 78 (0x0004e) Actual length = 312 (0x000138) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) ``` </div></details> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-0.27%</span>) : 162917.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory():this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -531,10 +531,9 @@ G_M17523_IG25: ; bbWeight=1, gcrefRegs=400002 {x1 x22}, byrefRegs=0000 {} G_M17523_IG26: ; bbWeight=0.50, gcrefRegs=80002 {x1 x19}, byrefRegs=0000 {}, byref, isz asr w0, w0, dotnet#31 lsl w0, w0, #1 - add w0, w0, w2, ASR dotnet#31 - negs w0, w0 + adds w0, w0, w2, ASR dotnet#31 beq G_M17523_IG29 - ;; size=20 bbWeight=0.50 PerfScore 2.25 + ;; size=16 bbWeight=0.50 PerfScore 2.00 G_M17523_IG27: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; gcrRegs -[x1 x19] mov w19, wzr @@ -733,7 +732,7 @@ G_M17523_IG43: ; bbWeight=0.00, gcrefRegs=0001 {x0}, byrefRegs=0000 {}, b brk #0 ;; size=32 bbWeight=0.00 PerfScore 0.00 -; Total bytes of code 1488, prolog size 36, PerfScore 200.96, instruction count 372, allocated bytes for code 1488 (MethodHash=abb9bb8c) for method System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory():this (FullOpts) +; Total bytes of code 1484, prolog size 36, PerfScore 200.71, instruction count 371, allocated bytes for code 1484 (MethodHash=abb9bb8c) for method System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory():this (FullOpts) ; ============================================================ Unwind Info: @@ -744,7 +743,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0 - Function Length : 372 (0x00174) Actual length = 1488 (0x0005d0) + Function Length : 371 (0x00173) Actual length = 1484 (0x0005cc) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) ``` </div></details> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-0.26%</span>) : 162915.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory_String():this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -208,7 +208,7 @@ ; V197 cse1 [V197,T40] ( 2, 1 ) ref -> x0 "CSE #7: moderate" ; V198 cse2 [V198,T44] ( 2, 1 ) int -> x23 "CSE #4: moderate" ; V199 cse3 [V199,T45] ( 2, 1 ) long -> x1 "CSE #5: moderate" -; V200 cse4 [V200,T33] ( 3, 1.50) int -> x1 "CSE dotnet#17: moderate" +; V200 cse4 [V200,T33] ( 3, 1.50) int -> x1 "CSE dotnet#16: moderate" ; V201 rat0 [V201,T01] ( 3, 5.62) byref -> x1 "fgMakeTemp is creating a new local variable" ; V202 rat1 [V202,T07] ( 5, 3.75) ref -> x0 "replacement local" ; V203 rat2 [V203,T37] ( 3, 1.25) long -> x2 "CSE for expectedClsNode" @@ -623,8 +623,7 @@ G_M55449_IG30: ; bbWeight=1, gcrefRegs=4180002 {x1 x19 x20 x26}, byrefReg G_M55449_IG31: ; bbWeight=0.50, gcrefRegs=180000 {x19 x20}, byrefRegs=0000 {}, byref, isz asr w1, w21, dotnet#31 lsl w1, w1, #1 - add w1, w1, w22, ASR dotnet#31 - negs w1, w1 + adds w1, w1, w22, ASR dotnet#31 bne G_M55449_IG32 mov x1, x19 ; gcrRegs +[x1] @@ -642,7 +641,7 @@ G_M55449_IG31: ; bbWeight=0.50, gcrefRegs=180000 {x19 x20}, byrefRegs=000 ; gcrRegs -[x1 x20] mov w20, #1 b G_M55449_IG33 - ;; size=68 bbWeight=0.50 PerfScore 6.00 + ;; size=64 bbWeight=0.50 PerfScore 5.75 G_M55449_IG32: ; bbWeight=0.50, gcrefRegs=80000 {x19}, byrefRegs=0000 {}, byref mov w20, wzr ;; size=4 bbWeight=0.50 PerfScore 0.25 @@ -776,7 +775,7 @@ G_M55449_IG46: ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref brk #0 ;; size=40 bbWeight=0 PerfScore 0.00 -; Total bytes of code 1516, prolog size 48, PerfScore 174.78, instruction count 379, allocated bytes for code 1516 (MethodHash=a4562766) for method System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory_String():this (FullOpts) +; Total bytes of code 1512, prolog size 48, PerfScore 174.53, instruction count 378, allocated bytes for code 1512 (MethodHash=a4562766) for method System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory_String():this (FullOpts) ; ============================================================ Unwind Info: @@ -787,7 +786,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0 - Function Length : 379 (0x0017b) Actual length = 1516 (0x0005ec) + Function Length : 378 (0x0017a) Actual length = 1512 (0x0005e8) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) ``` </div></details> <details> <summary>+0 (0.00%) : 223365.dasm - System.Resources.Extensions.DeserializingResourceReader:CompareStringEqualsName(System.String):bool:this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -106,7 +106,7 @@ G_M52056_IG05: ; bbWeight=0.50, gcrefRegs=500000 {x20 x22}, byrefRegs=000 ldr x3, [x3] blr x3 ; gcrRegs -[x0-x1 x20 x22] - negs w0, w0 + cmp w0, #0 cset x0, eq ;; size=40 bbWeight=0.50 PerfScore 4.25 G_M52056_IG06: ; bbWeight=0.50, epilog, nogc, extend ``` </div></details> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-0.02%</span>) : 106573.dasm - System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -3678,8 +3678,7 @@ G_M43941_IG97: ; bbWeight=1, gcVars=0000000000000000000000000000000000000 G_M43941_IG98: ; bbWeight=4, gcrefRegs=4780004 {x2 x19 x20 x21 x22 x26}, byrefRegs=0000 {}, byref, isz ldr w1, [x2, #0x08] ldr w0, [fp, #0xD1FFAB1E] // [V74 tmp49] - sub w1, w0, w1 - negs w1, w1 + subs w1, w0, w1 beq G_M43941_IG90 ldp w0, w1, [x22, #0x10] add w1, w1, #1 @@ -3688,7 +3687,7 @@ G_M43941_IG98: ; bbWeight=4, gcrefRegs=4780004 {x2 x19 x20 x21 x22 x26}, ldr w1, [x2, #0x08] cmp w1, w0 bls G_M43941_IG100 - ;; size=48 bbWeight=4 PerfScore 76.00 + ;; size=44 bbWeight=4 PerfScore 74.00 G_M43941_IG99: ; bbWeight=3.03, gcVars=00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002 {V06}, gcrefRegs=4780004 {x2 x19 x20 x21 x22 x26}, byrefRegs=0000 {}, gcvars, byref ; GC ptr vars -{V75} add w1, w0, #1 @@ -7803,7 +7802,7 @@ RWD00 dq 00740053002D0031h, 0067006E00690072h RWD16 dq 007200740053002Dh, 00310067006E0069h -; Total bytes of code 18184, prolog size 44, PerfScore 10435.99, instruction count 4546, allocated bytes for code 18184 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) +; Total bytes of code 18180, prolog size 44, PerfScore 10433.99, instruction count 4545, allocated bytes for code 18180 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) ; ============================================================ Unwind Info: @@ -7814,7 +7813,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0 - Function Length : 4130 (0x01022) Actual length = 16520 (0x004088) + Function Length : 4129 (0x01021) Actual length = 16516 (0x004084) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) ``` </div></details> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-0.16%</span>) : 141855.dasm - System.IO.Pipelines.Tests.PipePoolTests:GetMemoryOverMaxPoolSizeAllocatesArray():this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -595,8 +595,7 @@ G_M36412_IG24: ; bbWeight=1, gcrefRegs=B80000 {x19 x20 x21 x23}, byrefReg G_M36412_IG25: ; bbWeight=0.50, gcrefRegs=B80000 {x19 x20 x21 x23}, byrefRegs=0000 {}, byref, isz asr w1, w24, dotnet#31 lsl w1, w1, #1 - add w1, w1, w25, ASR dotnet#31 - negs w1, w1 + adds w1, w1, w25, ASR dotnet#31 bne G_M36412_IG26 mov x1, x20 ; gcrRegs +[x1] @@ -618,7 +617,7 @@ G_M36412_IG25: ; bbWeight=0.50, gcrefRegs=B80000 {x19 x20 x21 x23}, byref ; gcrRegs -[x1] +[x0] ; gcr arg pop 0 b G_M36412_IG27 - ;; size=68 bbWeight=0.50 PerfScore 6.00 + ;; size=64 bbWeight=0.50 PerfScore 5.75 G_M36412_IG26: ; bbWeight=0.50, gcrefRegs=A80000 {x19 x21 x23}, byrefRegs=0000 {}, byref ; gcrRegs -[x0 x20] mov x20, xzr @@ -1232,7 +1231,7 @@ RWD16 dq <unknown method> dq G_M36412_IG51 -; Total bytes of code 2528, prolog size 48, PerfScore 347.37, instruction count 632, allocated bytes for code 2528 (MethodHash=f7d471c3) for method System.IO.Pipelines.Tests.PipePoolTests:GetMemoryOverMaxPoolSizeAllocatesArray():this (FullOpts) +; Total bytes of code 2524, prolog size 48, PerfScore 347.12, instruction count 631, allocated bytes for code 2524 (MethodHash=f7d471c3) for method System.IO.Pipelines.Tests.PipePoolTests:GetMemoryOverMaxPoolSizeAllocatesArray():this (FullOpts) ; ============================================================ Unwind Info: @@ -1243,7 +1242,7 @@ Unwind Info: E bit : 0 X bit : 0 Vers : 0 - Function Length : 591 (0x0024f) Actual length = 2364 (0x00093c) + Function Length : 590 (0x0024e) Actual length = 2360 (0x000938) ---- Epilog scopes ---- ---- Scope 0 Epilog Start Offset : 3523193630 (0xd1ffab1e) Actual offset = 3523193630 (0xd1ffab1e) Offset from main function begin = 3523193630 (0xd1ffab1e) ``` </div></details> </div></details> <details> <summary>benchmarks.run.linux.arm64.checked.mch</summary> <div style="margin-left:1em"> <details> <summary>+0 (0.00%) : 3177.dasm - System.Resources.ResourceReader:CompareStringEqualsName(System.String):bool:this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -106,7 +106,7 @@ G_M1070_IG05: ; bbWeight=0.50, gcrefRegs=500000 {x20 x22}, byrefRegs=0000 ldr x3, [x3] blr x3 ; gcrRegs -[x0-x1 x20 x22] - negs w0, w0 + cmp w0, #0 cset x0, eq ;; size=40 bbWeight=0.50 PerfScore 4.25 G_M1070_IG06: ; bbWeight=0.50, epilog, nogc, extend ``` </div></details> </div></details> <details> <summary>smoke_tests.nativeaot.linux.arm64.checked.mch</summary> <div style="margin-left:1em"> <details> <summary>+0 (0.00%) : 18583.dasm - Generics+TestAsyncGVMScenarios:RunAsync() (FullOpts)</summary> <div style="margin-left:1em"> No diffs found? </div></details> <details> <summary>+0 (0.00%) : 18730.dasm - Generics+TestAsyncGVMScenarios:AsyncGvm1[System.__Canon]():this (FullOpts)</summary> <div style="margin-left:1em"> No diffs found? </div></details> <details> <summary>+0 (0.00%) : 18865.dasm - Generics+TestAsyncGVMScenarios:AsyncGvm2[System.__Canon]():this (FullOpts)</summary> <div style="margin-left:1em"> No diffs found? </div></details> <details> <summary>+0 (0.00%) : 18873.dasm - System.Threading.Tasks.Task:get_CompletedTask() (FullOpts)</summary> <div style="margin-left:1em"> No diffs found? </div></details> </div></details> </div></details> <details> <summary>Details</summary> <div style="margin-left:1em"> #### Size improvements/regressions per collection |Collection|Contexts with diffs|Improvements|Regressions|Same size|Improvements (bytes)|Regressions (bytes)| |---|--:|--:|--:|--:|--:|--:| |libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch|11|<span style="color:green">10</span>|<span style="color:red">0</span>|<span style="color:blue">1</span>|<span style="color:green">-40</span>|<span style="color:red">+0</span>| |benchmarks.run.linux.arm64.checked.mch|1|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">1</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |smoke_tests.nativeaot.linux.arm64.checked.mch|4|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">4</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| ||16|<span style="color:green">10</span>|<span style="color:red">0</span>|<span style="color:blue">6</span>|<span style="color:green">-40</span>|<span style="color:red">+0</span>| --- #### PerfScore improvements/regressions per collection |Collection|Contexts with diffs|Improvements|Regressions|Same PerfScore|Improvements (PerfScore)|Regressions (PerfScore)|PerfScore Overall in FullOpts| |---|--:|--:|--:|--:|--:|--:|--:| |libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch|11|<span style="color:green">10</span>|<span style="color:red">0</span>|<span style="color:blue">1</span>|<span style="color:green">-0.10%</span>|0.00%|<span style="color:green">-0.0000%</span>| |benchmarks.run.linux.arm64.checked.mch|1|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">1</span>|0.00%|0.00%|0.0000%| |smoke_tests.nativeaot.linux.arm64.checked.mch|4|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">4</span>|0.00%|0.00%|0.0000%| --- #### Context information |Collection|Diffed contexts|MinOpts|FullOpts|Missed, base|Missed, diff| |---|--:|--:|--:|--:|--:| |libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch|354,001|23,273|330,728|0 (0.00%)|0 (0.00%)| |benchmarks.run.linux.arm64.checked.mch|63,204|3,337|59,867|0 (0.00%)|0 (0.00%)| |smoke_tests.nativeaot.linux.arm64.checked.mch|18,890|8|18,882|0 (0.00%)|0 (0.00%)| ||436,095|26,618|409,477|0 (0.00%)|0 (0.00%)| --- #### jit-analyze output <details> <summary>libraries_tests_no_tiered_compilation.run.linux.arm64.Release.mch</summary> <div style="margin-left:1em"> ``` Summary of Code Size diffs: (Lower is better) Total bytes of base: 183146276 (overridden on cmd) Total bytes of diff: 183146236 (overridden on cmd) Total bytes of delta: -40 (-0.00 % of base) diff is an improvement. relative diff is an improvement. ``` <details> <summary>Detail diffs</summary> ``` Top file improvements (bytes): -4 : 162916.dasm (-0.242% of base) -4 : 141852.dasm (-0.162% of base) -4 : 141855.dasm (-0.158% of base) -4 : 141861.dasm (-0.201% of base) -4 : 162917.dasm (-0.269% of base) -4 : 142473.dasm (-1.266% of base) -4 : 142389.dasm (-0.182% of base) -4 : 162915.dasm (-0.264% of base) -4 : 162918.dasm (-0.185% of base) -4 : 106573.dasm (-0.022% of base) 10 total files with Code Size differences (10 improved, 0 regressed), 1 unchanged. Top method improvements (bytes): -4 (-0.022% of base) : 106573.dasm - System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) -4 (-1.266% of base) : 142473.dasm - System.IO.Pipelines.Tests.BufferSegmentPoolTest:GetSegments(System.IO.Pipelines.ReadResult):System.Collections.Generic.List`1[System.Buffers.ReadOnlySequenceSegment`1[byte]] (FullOpts) -4 (-0.182% of base) : 142389.dasm - System.IO.Pipelines.Tests.PipelineReaderWriterFacts:ResetAfterCompleteReaderAndWriterWithoutAdvancingClearsEverything():this (FullOpts) -4 (-0.162% of base) : 141852.dasm - System.IO.Pipelines.Tests.PipePoolTests:GetMemoryAtMaxPoolSizeAllocatesFromPool():this (FullOpts) -4 (-0.158% of base) : 141855.dasm - System.IO.Pipelines.Tests.PipePoolTests:GetMemoryOverMaxPoolSizeAllocatesArray():this (FullOpts) -4 (-0.201% of base) : 141861.dasm - System.IO.Pipelines.Tests.PipePoolTests:WritesToArrayPoolByDefault():this (FullOpts) -4 (-0.242% of base) : 162916.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_IMemoryList_MultiBlock():this (FullOpts) -4 (-0.185% of base) : 162918.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_IMemoryList_SingleBlock():this (FullOpts) -4 (-0.264% of base) : 162915.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory_String():this (FullOpts) -4 (-0.269% of base) : 162917.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory():this (FullOpts) Top method improvements (percentages): -4 (-1.266% of base) : 142473.dasm - System.IO.Pipelines.Tests.BufferSegmentPoolTest:GetSegments(System.IO.Pipelines.ReadResult):System.Collections.Generic.List`1[System.Buffers.ReadOnlySequenceSegment`1[byte]] (FullOpts) -4 (-0.269% of base) : 162917.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory():this (FullOpts) -4 (-0.264% of base) : 162915.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_Memory_String():this (FullOpts) -4 (-0.242% of base) : 162916.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_IMemoryList_MultiBlock():this (FullOpts) -4 (-0.201% of base) : 141861.dasm - System.IO.Pipelines.Tests.PipePoolTests:WritesToArrayPoolByDefault():this (FullOpts) -4 (-0.185% of base) : 162918.dasm - System.Memory.Tests.ReadOnlySequenceTryGetTests:Ctor_IMemoryList_SingleBlock():this (FullOpts) -4 (-0.182% of base) : 142389.dasm - System.IO.Pipelines.Tests.PipelineReaderWriterFacts:ResetAfterCompleteReaderAndWriterWithoutAdvancingClearsEverything():this (FullOpts) -4 (-0.162% of base) : 141852.dasm - System.IO.Pipelines.Tests.PipePoolTests:GetMemoryAtMaxPoolSizeAllocatesFromPool():this (FullOpts) -4 (-0.158% of base) : 141855.dasm - System.IO.Pipelines.Tests.PipePoolTests:GetMemoryOverMaxPoolSizeAllocatesArray():this (FullOpts) -4 (-0.022% of base) : 106573.dasm - System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) 10 total methods with Code Size differences (10 improved, 0 regressed). ``` </details> -------------------------------------------------------------------------------- </div></details> <details> <summary>benchmarks.run.linux.arm64.checked.mch</summary> <div style="margin-left:1em"> ``` Summary of Code Size diffs: (Lower is better) Total bytes of base: 21285888 (overridden on cmd) Total bytes of diff: 21285888 (overridden on cmd) Total bytes of delta: 0 (0.00 % of base) ``` <details> <summary>Detail diffs</summary> ``` 0 total files with Code Size differences (0 improved, 0 regressed), 1 unchanged. 0 total methods with Code Size differences (0 improved, 0 regressed). ``` </details> -------------------------------------------------------------------------------- </div></details> </div></details> x64 asmdiffs Diffs are based on <span style="color:#1460aa">2,787,549</span> contexts (<span style="color:#1460aa">1,078,277</span> MinOpts, <span style="color:#1460aa">1,709,272</span> FullOpts). <details> <summary>Overall (<span style="color:green">-116</span> bytes)</summary> <div style="margin-left:1em"> |Collection|Base size (bytes)|Diff size (bytes)|PerfScore in Diffs |---|--:|--:|--:| |coreclr_tests.run.linux.x64.checked.mch|305,501,642|<span style="color:green">-110</span>|<span style="color:green">-14.87%</span>| |libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch|157,729,192|<span style="color:green">-2</span>|<span style="color:green">-0.01%</span>| |libraries_tests.run.linux.x64.Release.mch|392,784,680|<span style="color:green">-4</span>|<span style="color:green">-0.01%</span>| </div></details> <details> <summary>MinOpts (<span style="color:green">-14</span> bytes)</summary> <div style="margin-left:1em"> |Collection|Base size (bytes)|Diff size (bytes)|PerfScore in Diffs |---|--:|--:|--:| |coreclr_tests.run.linux.x64.checked.mch|197,469,852|<span style="color:green">-10</span>|<span style="color:green">-1.28%</span>| |libraries_tests.run.linux.x64.Release.mch|215,792,030|<span style="color:green">-4</span>|<span style="color:green">-0.01%</span>| </div></details> <details> <summary>FullOpts (<span style="color:green">-102</span> bytes)</summary> <div style="margin-left:1em"> |Collection|Base size (bytes)|Diff size (bytes)|PerfScore in Diffs |---|--:|--:|--:| |coreclr_tests.run.linux.x64.checked.mch|108,031,790|<span style="color:green">-100</span>|<span style="color:green">-16.74%</span>| |libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch|146,383,976|<span style="color:green">-2</span>|<span style="color:green">-0.01%</span>| </div></details> <details> <summary>Example diffs</summary> <div style="margin-left:1em"> <details> <summary>coreclr_tests.run.linux.x64.checked.mch</summary> <div style="margin-left:1em"> <details> <summary><span style="color:green">-8</span> (<span style="color:green">-29.63%</span>) : 199901.dasm - TestNeg.Program:NegsBinOpSingleLine(int,int):bool (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -18,23 +18,19 @@ G_M18888_IG01: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, ;; size=0 bbWeight=1 PerfScore 0.00 G_M18888_IG02: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref sar edi, 1 - mov eax, edi - neg eax setne al movzx rax, al - add esi, esi - mov ecx, esi - neg ecx + shl esi, 1 setne cl movzx rcx, cl or eax, ecx - ;; size=26 bbWeight=1 PerfScore 4.50 + ;; size=18 bbWeight=1 PerfScore 3.75 G_M18888_IG03: ; bbWeight=1, epilog, nogc, extend ret ;; size=1 bbWeight=1 PerfScore 1.00 ; END METHOD TestNeg.Program:NegsBinOpSingleLine(int,int):bool -; Total bytes of code 27, prolog size 0, PerfScore 5.50, instruction count 12, allocated bytes for code 27 (MethodHash=d08ab637) for method TestNeg.Program:NegsBinOpSingleLine(int,int):bool (FullOpts) +; Total bytes of code 19, prolog size 0, PerfScore 4.75, instruction count 8, allocated bytes for code 19 (MethodHash=d08ab637) for method TestNeg.Program:NegsBinOpSingleLine(int,int):bool (FullOpts) ; ============================================================ Unwind Info: ``` </div></details> <details> <summary><span style="color:green">-7</span> (<span style="color:green">-29.17%</span>) : 199894.dasm - TestNeg.Program:NegsLSR(uint):int (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -16,20 +16,17 @@ G_M6300_IG01: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, nogc <-- Prolog IG ;; size=0 bbWeight=0.50 PerfScore 0.00 G_M6300_IG02: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref + mov eax, -1 + mov ecx, 1 shr edi, 3 - mov eax, edi - mov ecx, -1 - mov edx, 1 - neg rax - mov eax, edx - cmove eax, ecx - ;; size=23 bbWeight=0.50 PerfScore 1.00 + cmovne eax, ecx + ;; size=16 bbWeight=0.50 PerfScore 0.62 G_M6300_IG03: ; bbWeight=0.50, epilog, nogc, extend ret ;; size=1 bbWeight=0.50 PerfScore 0.50 ; END METHOD TestNeg.Program:NegsLSR(uint):int -; Total bytes of code 24, prolog size 0, PerfScore 1.50, instruction count 8, allocated bytes for code 24 (MethodHash=2a8ee763) for method TestNeg.Program:NegsLSR(uint):int (FullOpts) +; Total bytes of code 17, prolog size 0, PerfScore 1.12, instruction count 5, allocated bytes for code 17 (MethodHash=2a8ee763) for method TestNeg.Program:NegsLSR(uint):int (FullOpts) ; ============================================================ Unwind Info: ``` </div></details> <details> <summary><span style="color:green">-7</span> (<span style="color:green">-29.17%</span>) : 199896.dasm - TestNeg.Program:NegsLargeShift(uint):int (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -16,20 +16,17 @@ G_M11276_IG01: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, nogc <-- Prolog IG ;; size=0 bbWeight=0.50 PerfScore 0.00 G_M11276_IG02: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref + mov eax, -1 + mov ecx, 1 shl edi, 4 - mov eax, edi - mov ecx, -1 - mov edx, 1 - neg rax - mov eax, edx - cmove eax, ecx - ;; size=23 bbWeight=0.50 PerfScore 1.00 + cmovne eax, ecx + ;; size=16 bbWeight=0.50 PerfScore 0.62 G_M11276_IG03: ; bbWeight=0.50, epilog, nogc, extend ret ;; size=1 bbWeight=0.50 PerfScore 0.50 ; END METHOD TestNeg.Program:NegsLargeShift(uint):int -; Total bytes of code 24, prolog size 0, PerfScore 1.50, instruction count 8, allocated bytes for code 24 (MethodHash=43eed3f3) for method TestNeg.Program:NegsLargeShift(uint):int (FullOpts) +; Total bytes of code 17, prolog size 0, PerfScore 1.12, instruction count 5, allocated bytes for code 17 (MethodHash=43eed3f3) for method TestNeg.Program:NegsLargeShift(uint):int (FullOpts) ; ============================================================ Unwind Info: ``` </div></details> <details> <summary><span style="color:green">-5</span> (<span style="color:green">-1.71%</span>) : 531325.dasm - ILGEN_CLASS:ILGEN_METHOD(bool,char,short,int):char (Tier0)</summary> <div style="margin-left:1em"> ```diff @@ -74,16 +74,14 @@ G_M28265_IG02: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, mov qword ptr [rbp-0x40], rdx mov rax, qword ptr [rbp-0x40] mov qword ptr [rbp-0x48], rax - mov eax, dword ptr [rbp-0x28] - neg rax - test rax, rax + cmp dword ptr [rbp-0x28], 0 jne SHORT G_M28265_IG03 mov eax, dword ptr [rbp-0x18] cmp eax, 255 ja SHORT G_M28265_IG06 mov eax, eax mov byte ptr [rbp-0x04], al - ;; size=182 bbWeight=1 PerfScore 117.08 + ;; size=177 bbWeight=1 PerfScore 117.58 G_M28265_IG03: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz mov eax, dword ptr [rbp-0x10] cmp rax, qword ptr [rbp-0x48] @@ -116,7 +114,7 @@ RWD16 dq 8000000000000000h ; -0 RWD24 dd 4F0BD98Fh ; 2.34629e+09 -; Total bytes of code 293, prolog size 31, PerfScore 147.42, instruction count 75, allocated bytes for code 293 (MethodHash=d26f9196) for method ILGEN_CLASS:ILGEN_METHOD(bool,char,short,int):char (Tier0) +; Total bytes of code 288, prolog size 31, PerfScore 147.92, instruction count 73, allocated bytes for code 288 (MethodHash=d26f9196) for method ILGEN_CLASS:ILGEN_METHOD(bool,char,short,int):char (Tier0) ; ============================================================ Unwind Info: ``` </div></details> <details> <summary><span style="color:green">-2</span> (<span style="color:green">-4.17%</span>) : 181410.dasm - ldc_neg_i4._neg:i4_3(int,int):int (MinOpts)</summary> <div style="margin-left:1em"> ```diff @@ -30,18 +30,17 @@ G_M1458_IG03: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byre ;; size=5 bbWeight=0.50 PerfScore 0.50 G_M1458_IG04: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref xor eax, eax - neg eax test eax, eax sete al movzx rax, al - ;; size=12 bbWeight=1 PerfScore 2.00 + ;; size=10 bbWeight=1 PerfScore 1.75 G_M1458_IG05: ; bbWeight=1, epilog, nogc, extend add rsp, 16 pop rbp ret ;; size=6 bbWeight=1 PerfScore 1.75 -; Total bytes of code 48, prolog size 16, PerfScore 12.00, instruction count 16, allocated bytes for code 48 (MethodHash=0125fa4d) for method ldc_neg_i4._neg:i4_3(int,int):int (MinOpts) +; Total bytes of code 46, prolog size 16, PerfScore 11.75, instruction count 15, allocated bytes for code 46 (MethodHash=0125fa4d) for method ldc_neg_i4._neg:i4_3(int,int):int (MinOpts) ; ============================================================ Unwind Info: ``` </div></details> <details> <summary><span style="color:green">-3</span> (<span style="color:green">-5.77%</span>) : 181421.dasm - ldc_neg_i8._neg:i8_3(long,long):int (MinOpts)</summary> <div style="margin-left:1em"> ```diff @@ -30,18 +30,17 @@ G_M18290_IG03: ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byr ;; size=5 bbWeight=0.50 PerfScore 0.50 G_M18290_IG04: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref xor eax, eax - neg rax test rax, rax sete al movzx rax, al - ;; size=14 bbWeight=1 PerfScore 2.00 + ;; size=11 bbWeight=1 PerfScore 1.75 G_M18290_IG05: ; bbWeight=1, epilog, nogc, extend add rsp, 16 pop rbp ret ;; size=6 bbWeight=1 PerfScore 1.75 -; Total bytes of code 52, prolog size 18, PerfScore 12.00, instruction count 16, allocated bytes for code 52 (MethodHash=ff46b88d) for method ldc_neg_i8._neg:i8_3(long,long):int (MinOpts) +; Total bytes of code 49, prolog size 18, PerfScore 11.75, instruction count 15, allocated bytes for code 49 (MethodHash=ff46b88d) for method ldc_neg_i8._neg:i8_3(long,long):int (MinOpts) ; ============================================================ Unwind Info: ``` </div></details> </div></details> <details> <summary>libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch</summary> <div style="margin-left:1em"> <details> <summary><span style="color:green">-2</span> (<span style="color:green">-0.01%</span>) : 124444.dasm - System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts)</summary> <div style="margin-left:1em"> ```diff @@ -3246,7 +3246,6 @@ G_M43941_IG102: ; bbWeight=1, gcVars=000000000000000000000000000000000000 G_M43941_IG103: ; bbWeight=4, gcrefRegs=F009 {rax rbx r12 r13 r14 r15}, byrefRegs=0000 {}, byref, isz mov esi, dword ptr [rbp-0x30] sub esi, dword ptr [rax+0x08] - neg esi je G_M43941_IG96 inc dword ptr [r13+0x14] mov rdi, gword ptr [r13+0x08] @@ -3254,7 +3253,7 @@ G_M43941_IG103: ; bbWeight=4, gcrefRegs=F009 {rax rbx r12 r13 r14 r15}, b mov esi, dword ptr [r13+0x10] cmp dword ptr [rdi+0x08], esi jbe SHORT G_M43941_IG106 - ;; size=31 bbWeight=4 PerfScore 65.00 + ;; size=29 bbWeight=4 PerfScore 64.00 G_M43941_IG104: ; bbWeight=3.05, gcVars=00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002 {V06}, gcrefRegs=F088 {rbx rdi r12 r13 r14 r15}, byrefRegs=0000 {}, gcvars, byref ; gcrRegs -[rax] ; GC ptr vars -{V75} @@ -6658,7 +6657,7 @@ RWD40 dq 4034000000000000h ; 20 RWD48 dq 4039000000000000h ; 25 -; Total bytes of code 14316, prolog size 28, PerfScore 7866.28, instruction count 3034, allocated bytes for code 14316 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) +; Total bytes of code 14314, prolog size 28, PerfScore 7865.28, instruction count 3033, allocated bytes for code 14314 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (FullOpts) ; ============================================================ Unwind Info: ``` </div></details> </div></details> <details> <summary>libraries_tests.run.linux.x64.Release.mch</summary> <div style="margin-left:1em"> <details> <summary><span style="color:green">-4</span> (<span style="color:green">-0.03%</span>) : 314396.dasm - System.Data.Tests.DataTableTest2:Select_ByFilter():this (Instrumented Tier0)</summary> <div style="margin-left:1em"> ```diff @@ -2199,13 +2199,11 @@ G_M43941_IG57: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref ; gcr arg pop 0 mov ecx, dword ptr [rbp-0x240] sub ecx, dword ptr [rax] - mov eax, ecx - ; byrRegs -[rax] - neg eax - test eax, eax + test ecx, ecx je G_M43941_IG56 mov rdi, 0xD1FFAB1E call CORINFO_HELP_COUNTPROFILE32 + ; byrRegs -[rax] ; gcr arg pop 0 mov rdi, gword ptr [rbp-0x50] ; gcrRegs +[rdi] @@ -2215,7 +2213,7 @@ G_M43941_IG57: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref call [<unknown method>] ; gcrRegs -[rsi rdi] ; gcr arg pop 0 - ;; size=309 bbWeight=1 PerfScore 58.00 + ;; size=305 bbWeight=1 PerfScore 57.50 G_M43941_IG58: ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz mov eax, dword ptr [rbp-0x5E0] dec eax @@ -5412,7 +5410,7 @@ RWD08 dq 4034000000000000h ; 20 RWD16 dq 4039000000000000h ; 25 -; Total bytes of code 15982, prolog size 67, PerfScore 3425.70, instruction count 2755, allocated bytes for code 15982 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (Instrumented Tier0) +; Total bytes of code 15978, prolog size 67, PerfScore 3425.20, instruction count 2753, allocated bytes for code 15978 (MethodHash=c958545a) for method System.Data.Tests.DataTableTest2:Select_ByFilter():this (Instrumented Tier0) ; ============================================================ Unwind Info: ``` </div></details> </div></details> </div></details> <details> <summary>Details</summary> <div style="margin-left:1em"> #### Size improvements/regressions per collection |Collection|Contexts with diffs|Improvements|Regressions|Same size|Improvements (bytes)|Regressions (bytes)| |---|--:|--:|--:|--:|--:|--:| |benchmarks.run.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |benchmarks.run_pgo.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |benchmarks.run_pgo_optrepeat.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |coreclr_tests.run.linux.x64.checked.mch|23|<span style="color:green">23</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-110</span>|<span style="color:red">+0</span>| |libraries.crossgen2.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |libraries.pmi.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch|1|<span style="color:green">1</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-2</span>|<span style="color:red">+0</span>| |libraries_tests.run.linux.x64.Release.mch|1|<span style="color:green">1</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-4</span>|<span style="color:red">+0</span>| |realworld.run.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| |smoke_tests.nativeaot.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0</span>|<span style="color:red">+0</span>| ||25|<span style="color:green">25</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-116</span>|<span style="color:red">+0</span>| --- #### PerfScore improvements/regressions per collection |Collection|Contexts with diffs|Improvements|Regressions|Same PerfScore|Improvements (PerfScore)|Regressions (PerfScore)|PerfScore Overall in FullOpts| |---|--:|--:|--:|--:|--:|--:|--:| |benchmarks.run.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |benchmarks.run_pgo.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |benchmarks.run_pgo_optrepeat.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |coreclr_tests.run.linux.x64.checked.mch|23|<span style="color:green">22</span>|<span style="color:red">1</span>|<span style="color:blue">0</span>|<span style="color:green">-15.50%</span>|<span style="color:red">+0.34%</span>|<span style="color:green">-0.0017%</span>| |libraries.crossgen2.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |libraries.pmi.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch|1|<span style="color:green">1</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0.01%</span>|0.00%|<span style="color:green">-0.0000%</span>| |libraries_tests.run.linux.x64.Release.mch|1|<span style="color:green">1</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|<span style="color:green">-0.01%</span>|0.00%|0.0000%| |realworld.run.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| |smoke_tests.nativeaot.linux.x64.checked.mch|0|<span style="color:green">0</span>|<span style="color:red">0</span>|<span style="color:blue">0</span>|0.00%|0.00%|0.0000%| --- #### Context information |Collection|Diffed contexts|MinOpts|FullOpts|Missed, base|Missed, diff| |---|--:|--:|--:|--:|--:| |benchmarks.run.linux.x64.checked.mch|75,913|2,972|72,941|0 (0.00%)|0 (0.00%)| |benchmarks.run_pgo.linux.x64.checked.mch|122,785|86,206|36,579|0 (0.00%)|0 (0.00%)| |benchmarks.run_pgo_optrepeat.linux.x64.checked.mch|76,998|2,939|74,059|0 (0.00%)|0 (0.00%)| |coreclr_tests.run.linux.x64.checked.mch|577,098|358,595|218,503|0 (0.00%)|0 (0.00%)| |libraries.crossgen2.linux.x64.checked.mch|269,385|20|269,365|0 (0.00%)|0 (0.00%)| |libraries.pmi.linux.x64.checked.mch|354,706|8|354,698|0 (0.00%)|0 (0.00%)| |libraries_tests_no_tiered_compilation.run.linux.x64.Release.mch|387,764|23,607|364,157|0 (0.00%)|0 (0.00%)| |libraries_tests.run.linux.x64.Release.mch|862,114|603,896|258,218|0 (0.00%)|0 (0.00%)| |realworld.run.linux.x64.checked.mch|29,264|21|29,243|0 (0.00%)|0 (0.00%)| |smoke_tests.nativeaot.linux.x64.checked.mch|31,522|13|31,509|0 (0.00%)|0 (0.00%)| ||2,787,549|1,078,277|1,709,272|0 (0.00%)|0 (0.00%)| --- #### jit-analyze output </div></details>

Max Charlamb added 3 commits November 6, 2024 20:36

add ExecutionManager contract version

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max-charlamb marked this pull request as ready for review November 7, 2024 18:24

max-charlamb changed the title ~~add ExecutionManager contract version~~ [cdac] add v2 ExecutionManager contract for NibbleMap change Nov 7, 2024

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Max Charlamb added 2 commits November 7, 2024 14:12

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max-charlamb requested a review from AaronRobinsonMSFT November 7, 2024 19:25

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Constant Time Lookup NibbleMap dotnet/runtime#108939

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Max Charlamb added 2 commits November 8, 2024 11:11

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[cdac] add v2 ExecutionManager contract for NibbleMap change dotnet/runtime#109654

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max-charlamb deleted the branch nibble-optimize June 10, 2025 16:37

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max-charlamb pushed a commit that referenced this pull request Oct 1, 2025

Revert "Add methods from dotnet#27912 (Flow System.Text.Rune through …

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…more APIs) (#1…" (dotnet#120138) This reverts commit 1b4eff2. Fixes dotnet#120137

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[cdac] add v2 ExecutionManager contract for NibbleMap change#1

[cdac] add v2 ExecutionManager contract for NibbleMap change#1
max-charlamb wants to merge 7 commits intonibble-optimizefrom
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max-charlamb commented Nov 7, 2024 •

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		namespace Microsoft.Diagnostics.DataContractReader.ExecutionManagerHelpers;

		// CoreCLR nibblemap with O(1) lookup time.

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