Don't attempt the PRE inline asm calls, since we don't value number them yet. Fixes...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110489 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 42afd6d..81cbc4e 100644 (file)
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -2111,6 +2111,11 @@ bool GVN::performPRE(Function &F) {
           CurInst->mayReadFromMemory() || CurInst->mayHaveSideEffects() ||
           isa<DbgInfoIntrinsic>(CurInst))
         continue;
+      
+      // We don't currently value number ANY inline asm calls.
+      if (CallInst *CallI = dyn_cast<CallInst>(CurInst))
+        if (CallI->isInlineAsm())
+          continue;
 
       uint32_t ValNo = VN.lookup(CurInst);