[pull] main from llvm:main #5652
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…169329) This can avoid the promotion bf16 -> f32 -> bf16 round trip (or costly expansions).
When wrapping a symbol `foo` via `-wrap=foo`, we create the symbol `__wrap_foo` that replaces all mentions of `foo`. This feature was implemented for wasm-ld in commit a5ca34e. So far, no valid signature has been attached to the undefined symbol, leading to a nullptr dereference in the logic for creating the import section. This change adds the correct signature to the wrapped symbol, enabling the generation of an import for it.
…-uses.ll` due to changes to ReplaceConstant (#169848) Fixes an LLVM DirectX codegen test after it broke due to #169141 The CBuffer loads and GEPs are no longer duplicated when there are two or more accesses within the same basic block. This PR removes the duplicate check for CBuffer load and GEP from the original test function `@f` and adds a new test function `@g` which places duplicate CBuffer loads into separate basic blocks.
Indirect call instrumentation snippet uses x16 register in exit
handler to go to destination target
__bolt_instr_ind_call_handler_func:
msr nzcv, x1
ldp x0, x1, [sp], #16
ldr x16, [sp], #16
ldp x0, x1, [sp], #16
br x16 <-----
This patch adds the instrumentation snippet by calling instrumentation
runtime library through indirect call instruction and adding the wrapper
to store/load target value and the register for original indirect instruction.
Example:
mov x16, foo
infirectCall:
adrp x8, Label
add x8, x8, #:lo12:Label
blr x8
Before:
Instrumented indirect call:
stp x0, x1, [sp, #-16]!
mov x0, x8
movk x1, #0x0, lsl #48
movk x1, #0x0, lsl #32
movk x1, #0x0, lsl #16
movk x1, #0x0
stp x0, x1, [sp, #-16]!
adrp x0, __bolt_instr_ind_call_handler_func
add x0, x0, #:lo12:__bolt_instr_ind_call_handler_func
blr x0
__bolt_instr_ind_call_handler: (exit snippet)
msr nzcv, x1
ldp x0, x1, [sp], #16
ldr x16, [sp], #16
ldp x0, x1, [sp], #16
br x16 <- overwrites the original value in X16
__bolt_instr_ind_call_handler_func: (entry snippet)
stp x0, x1, [sp, #-16]!
mrs x1, nzcv
adrp x0, __bolt_instr_ind_call_handler
add x0, x0, x0, #:lo12:__bolt_instr_ind_call_handler
ldr x0, [x0]
cmp x0, #0x0
b.eq __bolt_instr_ind_call_handler
str x30, [sp, #-16]!
blr x0 <--- runtime lib store/load all regs
ldr x30, [sp], #16
b __bolt_instr_ind_call_handler
_________________________________________________________________________
After:
mov x16, foo
infirectCall:
adrp x8, Label
add x8, x8, #:lo12:Label
blr x8
Instrumented indirect call:
stp x0, x1, [sp, #-16]!
mov x0, x8
movk x1, #0x0, lsl #48
movk x1, #0x0, lsl #32
movk x1, #0x0, lsl #16
movk x1, #0x0
stp x0, x30, [sp, #-16]!
adrp x8, __bolt_instr_ind_call_handler_func
add x8, x8, #:lo12:__bolt_instr_ind_call_handler_func
blr x8 <--- call trampoline instr lib
ldp x0, x30, [sp], #16
mov x8, x0 <---- restore original target
ldp x0, x1, [sp], #16
blr x8 <--- original indirect call instruction
// don't touch regs besides x0, x1
__bolt_instr_ind_call_handler: (exit snippet)
ret <---- return to original function with indirect call
__bolt_instr_ind_call_handler_func: (entry snippet)
adrp x0, __bolt_instr_ind_call_handler
add x0, x0, #:lo12:__bolt_instr_ind_call_handler
ldr x0, [x0]
cmp x0, #0x0
b.eq __bolt_instr_ind_call_handler
str x30, [sp, #-16]!
blr x0 <--- runtime lib store/load all regs
ldr x30, [sp], #16
b __bolt_instr_ind_call_handler
Upstream TryCall Op as a prerequisite for Try Catch work Issue #154992
Add a variant of m_Intrinsic that matches a variable runtime ID.
…169338) In some case, VPWidenPointerInductions become only used by scalars after legalizeAndOptimizationInducftions was already run, for example due to some VPlan optimizations. Move the code to scalarize VPWidenPointerInductions to a helper and use it if needed. This fixes a crash after #148274 in the added test case. Fixes #169780
Proof: https://alive2.llvm.org/ce/z/a5fzlJ Closes #146642 --------- Co-authored-by: Yingwei Zheng <dtcxzyw@qq.com>
This pull request addresses an issue encountered when building **libcxx** with certain configurations (`-D_LIBCPP_HAS_MUSL_LIBC` & `-D__linux__`) that lack the `_GNU_SOURCE` definition. Specifically, this issue arises if the system **musl libc** is built with `_BSD_SOURCE` instead of `_GNU_SOURCE`. The resultant configuration leads to problems with the "Strtonum functions" in the file [libcxx/include/__locale_dir/support/linux.h](https://github.com/llvm/llvm-project/tree/master/libcxx/include/__locale_dir/support/linux.h), affecting the following functions: - `__strtof` - `__strtod` - `__strtold` **Error messages displayed include**: ```console error: no member named 'strtof_l' in the global namespace ``` ```console error: no member named 'strtod_l' in the global namespace ``` ```console error: no member named 'strtold_l' in the global namespace ``` For more insight, relevant code can be accessed [here](https://github.com/llvm/llvm-project/blob/79cd1b7a25cdbf42c7234999ae9bc51db30af1f0/libcxx/include/__locale_dir/support/linux.h#L85-L95).
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