Just don't transform this memset into "bzero" if no-builtin is specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56888 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 1d3fa28..755554b 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -5148,22 +5148,24 @@
// Check to see if there is a specialized entry-point for memory zeroing.
ConstantSDNode *V = dyn_cast<ConstantSDNode>(Src);
- if (const char *bzeroEntry = V &&
- V->isNullValue() ? Subtarget->getBZeroEntry(NoBuiltin) : 0) {
- MVT IntPtr = getPointerTy();
- const Type *IntPtrTy = TD->getIntPtrType();
- TargetLowering::ArgListTy Args;
- TargetLowering::ArgListEntry Entry;
- Entry.Node = Dst;
- Entry.Ty = IntPtrTy;
- Args.push_back(Entry);
- Entry.Node = Size;
- Args.push_back(Entry);
- std::pair<SDValue,SDValue> CallResult =
- LowerCallTo(Chain, Type::VoidTy, false, false, false, false,
- CallingConv::C, false,
- DAG.getExternalSymbol(bzeroEntry, IntPtr), Args, DAG);
- return CallResult.second;
+ if (!NoBuiltin) {
+ if (const char *bzeroEntry = V &&
+ V->isNullValue() ? Subtarget->getBZeroEntry() : 0) {
+ MVT IntPtr = getPointerTy();
+ const Type *IntPtrTy = TD->getIntPtrType();
+ TargetLowering::ArgListTy Args;
+ TargetLowering::ArgListEntry Entry;
+ Entry.Node = Dst;
+ Entry.Ty = IntPtrTy;
+ Args.push_back(Entry);
+ Entry.Node = Size;
+ Args.push_back(Entry);
+ std::pair<SDValue,SDValue> CallResult =
+ LowerCallTo(Chain, Type::VoidTy, false, false, false, false,
+ CallingConv::C, false,
+ DAG.getExternalSymbol(bzeroEntry, IntPtr), Args, DAG);
+ return CallResult.second;
+ }
}
// Otherwise have the target-independent code call memset.