[PATCH] [clang-cl] Added _InterlockedCompareExchangePointer to Intrin.h

[Reid Kleckner]

================
Comment at: lib/Headers/Intrin.h:783
@@ +782,3 @@
+__faststorefence(void) {
+	__asm__ volatile ("lock orq $0,(%rsp)");
+}
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I think this needs to have a memory constraint to avoid reordering non-volatile loads and stores across it.


http://llvm-reviews.chandlerc.com/D2600