Fix a think-o in isSafeToMove. This fixes it from thinking that
volatile memory references are safe to move.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56948 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/volatile.ll b/test/CodeGen/X86/volatile.ll
new file mode 100644
index 0000000..e40f87b
--- /dev/null
+++ b/test/CodeGen/X86/volatile.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 | grep movsd | count 5
+; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 -fast | grep movsd | count 5
+
+@x = external global double
+
+define void @foo() nounwind {
+ %a = volatile load double* @x
+ volatile store double 0.0, double* @x
+ volatile store double 0.0, double* @x
+ %b = volatile load double* @x
+ ret void
+}
+
+define void @bar() nounwind {
+ %c = volatile load double* @x
+ ret void
+}