Revert "Change memcpy/memset/memmove to have dest and source alignments."

This reverts commit r253511.

This likely broke the bots in
http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202
http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787

llvm-svn: 253543

1 files changed, 11 insertions, 12 deletions

diff --git a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
index 2a9749d65c2..21ef3207e89 100644
--- a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
@@ -1356,21 +1356,20 @@ void DFSanVisitor::visitMemTransferInst(MemTransferInst &I) {
   Value *LenShadow = IRB.CreateMul(
       I.getLength(),
       ConstantInt::get(I.getLength()->getType(), DFSF.DFS.ShadowWidth / 8));
-  Type *Int8Ptr = Type::getInt8PtrTy(*DFSF.DFS.Ctx);
-  DestShadow = IRB.CreateBitCast(DestShadow, Int8Ptr);
-  SrcShadow = IRB.CreateBitCast(SrcShadow, Int8Ptr);
-  auto *MTI = cast<MemTransferInst>(IRB.CreateCall(I.getCalledValue(),
-                                                   { DestShadow, SrcShadow,
-                                                     LenShadow,
-                                                     I.getVolatileCst() }));
-
+  Value *AlignShadow;
   if (ClPreserveAlignment) {
-    MTI->setDestAlignment(I.getDestAlignment() * (DFSF.DFS.ShadowWidth / 8));
-    MTI->setSrcAlignment(I.getSrcAlignment() * (DFSF.DFS.ShadowWidth / 8));
+    AlignShadow = IRB.CreateMul(I.getAlignmentCst(),
+                                ConstantInt::get(I.getAlignmentCst()->getType(),
+                                                 DFSF.DFS.ShadowWidth / 8));
   } else {
-    MTI->setDestAlignment(DFSF.DFS.ShadowWidth / 8);
-    MTI->setSrcAlignment(DFSF.DFS.ShadowWidth / 8);
+    AlignShadow = ConstantInt::get(I.getAlignmentCst()->getType(),
+                                   DFSF.DFS.ShadowWidth / 8);
   }
+  Type *Int8Ptr = Type::getInt8PtrTy(*DFSF.DFS.Ctx);
+  DestShadow = IRB.CreateBitCast(DestShadow, Int8Ptr);
+  SrcShadow = IRB.CreateBitCast(SrcShadow, Int8Ptr);
+  IRB.CreateCall(I.getCalledValue(), {DestShadow, SrcShadow, LenShadow,
+                                      AlignShadow, I.getVolatileCst()});
 }
 
 void DFSanVisitor::visitReturnInst(ReturnInst &RI) {