https://github.com/DKLoehr updated
https://github.com/llvm/llvm-project/pull/126952
>From 748451908cc46416dab8ec427e8df656e61d7d94 Mon Sep 17 00:00:00 2001
From: Devon Loehr <dlo...@google.com>
Date: Wed, 12 Feb 2025 18:17:05 +0000
Subject: [PATCH 1/2] Remove xbegin and _xend
---
clang/lib/Headers/intrin.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h
index 376046aeeaf5e..3dd1eb45817d4 100644
--- a/clang/lib/Headers/intrin.h
+++ b/clang/lib/Headers/intrin.h
@@ -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__)
>From 92723c431c8b09f92d416714244ca1104985e3e8 Mon Sep 17 00:00:00 2001
From: Devon Loehr <dlo...@google.com>
Date: Thu, 13 Feb 2025 15:35:02 +0000
Subject: [PATCH 2/2] Add regression test
---
clang/test/Headers/no-xend.cpp | 10 ++++++++++
1 file changed, 10 insertions(+)
create mode 100644 clang/test/Headers/no-xend.cpp
diff --git a/clang/test/Headers/no-xend.cpp b/clang/test/Headers/no-xend.cpp
new file mode 100644
index 0000000000000..31e6b25a27e81
--- /dev/null
+++ b/clang/test/Headers/no-xend.cpp
@@ -0,0 +1,10 @@
+// RUN: %clang -Xclang -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
\ No newline at end of file
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