fix startup on pthreads #3
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Emscripten doesn't run preRun, onRuntimeInitialized or postRun on pthread workers. it sets insantiateWasm to a custom callback that receives the wasm code using postMessage from the main thread, so we don't need our instantiateWasm, either.
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I did something similar. We could close this one |
pavelsavara
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Jun 8, 2023
…tnet#87189) This fixes a startup crash on Big Sur: > error: * Assertion at /Users/runner/work/1/s/src/mono/mono/utils/mono-hwcap-arm64.c:35, condition `res == 0' not met Because sysctl can't find some of these options: $ sysctl hw.optional.armv8_crc32 hw.optional.armv8_crc32: 1 $ sysctl hw.optional.arm.FEAT_RDM sysctl: unknown oid 'hw.optional.arm.FEAT_RDM' $ sysctl hw.optional.arm.FEAT_DotProd sysctl: unknown oid 'hw.optional.arm.FEAT_DotProd' $ sysctl hw.optional.arm.FEAT_SHA1 sysctl: unknown oid 'hw.optional.arm.FEAT_SHA1' $ sysctl hw.optional.arm.FEAT_SHA256 sysctl: unknown oid 'hw.optional.arm.FEAT_SHA256' $ sysctl hw.optional.arm.FEAT_AES sysctl: unknown oid 'hw.optional.arm.FEAT_AES' Full stack trace: * thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1 * frame #0: 0x0000010ef37560 libmonosgen-2.0.dylib`monoeg_assertion_message frame #1: 0x0000010ef375cc libmonosgen-2.0.dylib`mono_assertion_message + 32 frame #2: 0x0000010ef40d6c libmonosgen-2.0.dylib`mono_hwcap_arch_init + 544 frame #3: 0x0000010ef54bd8 libmonosgen-2.0.dylib`mono_hwcap_init + 72 frame #4: 0x0000010ee14dc0 libmonosgen-2.0.dylib`parse_optimizations + 52 frame #5: 0x0000010edbed48 libmonosgen-2.0.dylib`mono_init frame #6: 0x0000010ee18968 libmonosgen-2.0.dylib`mono_jit_init_version frame #7: 0x0000010f48a300 libxamarin-dotnet-debug.dylib`xamarin_bridge_initialize + 216 frame #8: 0x0000010f4900a4 libxamarin-dotnet-debug.dylib`xamarin_main + 376
pavelsavara
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May 16, 2024
…#102133) This generalizes the indir reordering optimization (that currently only triggers for loads) to kick in for GT_STOREIND nodes. The main complication with doing this is the fact that the data node of the second indirection needs its own reordering with the previous indirection. The existing logic works by reordering all nodes between the first and second indirection that are unrelated to the second indirection's computation to happen after it. Once that is done we know that there are no uses of the first indirection's result between it and the second indirection, so after doing the necessary interference checks we can safely move the previous indirection to happen after the data node of the second indirection. Example: ```csharp class Body { public double x, y, z, vx, vy, vz, mass; } static void Advance(double dt, Body[] bodies) { foreach (Body b in bodies) { b.x += dt * b.vx; b.y += dt * b.vy; b.z += dt * b.vz; } } ``` Diff: ```diff @@ -1,18 +1,17 @@ -G_M55007_IG04: ;; offset=0x001C +G_M55007_IG04: ;; offset=0x0020 ldr x3, [x0, w1, UXTW #3] ldp d16, d17, [x3, #0x08] ldp d18, d19, [x3, #0x20] fmul d18, d0, d18 fadd d16, d16, d18 - str d16, [x3, #0x08] - fmul d16, d0, d19 - fadd d16, d17, d16 - str d16, [x3, #0x10] + fmul d18, d0, d19 + fadd d17, d17, d18 + stp d16, d17, [x3, #0x08] ldr d16, [x3, #0x18] ldr d17, [x3, #0x30] fmul d17, d0, d17 fadd d16, d16, d17 str d16, [x3, #0x18] add w1, w1, #1 cmp w2, w1 bgt G_M55007_IG04 ```
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Emscripten doesn't run preRun, onRuntimeInitialized or postRun on
pthread workers. it sets insantiateWasm to a custom callback that
receives the wasm code using postMessage from the main thread, so we
don't need our instantiateWasm, either.