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Remove xbegin and _xend #126952

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Merged
merged 2 commits into from
Feb 22, 2025
Merged

Remove xbegin and _xend #126952

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01e40e4
Remove xbegin and _xend
DKLoehr Feb 12, 2025
76df571
Add regression test
DKLoehr Feb 13, 2025
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2 changes: 0 additions & 2 deletions clang/lib/Headers/intrin.h
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Expand Up @@ -162,8 +162,6 @@ void _Store_HLERelease(long volatile *, long);
void _Store64_HLERelease(__int64 volatile *, __int64);
void _StorePointer_HLERelease(void *volatile *, void *);
void _WriteBarrier(void);
unsigned __int32 xbegin(void);
void _xend(void);

/* These additional intrinsics are turned on in x64/amd64/x86_64 mode. */
#if defined(__x86_64__) && !defined(__arm64ec__)
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10 changes: 10 additions & 0 deletions clang/test/Headers/no-xend.cpp
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@@ -0,0 +1,10 @@
// RUN: %clang_cc1 -triple x86_64-pc-win32 \
// RUN: -fms-extensions -fms-compatibility -fms-compatibility-version=17.00 \
// RUN: -ffreestanding -fsyntax-only -Werror -Wsystem-headers \
// RUN: -isystem %S/Inputs/include %s

#include <immintrin.h>

#pragma clang attribute push(__attribute__((target("avx"))), apply_to=function)
#include <intrin.h>
#pragma clang attribute pop