[PATCH] D40545: [sanitizer] add msvc atomic_compare_exchange_strong for sint32_t

[comicfans44 via Phabricator via llvm-commits]

comicfans44 created this revision.
comicfans44 added a project: Sanitizers.
Herald added subscribers: Sanitizers, llvm-commits, kubamracek.

It is short enough , so just a copy/paste from uint32_t


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D40545

Files:
  compiler-rt/lib/sanitizer_common/sanitizer_atomic_msvc.h


Index: compiler-rt/lib/sanitizer_common/sanitizer_atomic_msvc.h
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_atomic_msvc.h
+++ compiler-rt/lib/sanitizer_common/sanitizer_atomic_msvc.h
@@ -240,6 +240,19 @@
   return false;
 }
 
+INLINE bool atomic_compare_exchange_strong(volatile atomic_sint32_t *a,
+                                           s32 *cmp,
+                                           s32 xchg,
+                                           memory_order mo) {
+  s32 cmpv = *cmp;
+  s32 prev = (s32)_InterlockedCompareExchange(
+      (volatile long*)&a->val_dont_use, (long)xchg, (long)cmpv);
+  if (prev == cmpv)
+    return true;
+  *cmp = prev;
+  return false;
+}
+
 INLINE bool atomic_compare_exchange_strong(volatile atomic_uint64_t *a,
                                            u64 *cmp,
                                            u64 xchg,


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