Add missing check
llvm-svn: 17706
diff --git a/llvm/lib/Target/X86/X86ISelSimple.cpp b/llvm/lib/Target/X86/X86ISelSimple.cpp
index e5cf618..37572aa 100644
--- a/llvm/lib/Target/X86/X86ISelSimple.cpp
+++ b/llvm/lib/Target/X86/X86ISelSimple.cpp
@@ -2925,7 +2925,7 @@
//
if (ConstantUInt *CUI = dyn_cast<ConstantUInt>(ShiftAmount)) {
unsigned Amount = CUI->getValue();
- if (Amount == 1) { // X << 1 == X+X
+ if (Amount == 1 && isLeftShift) { // X << 1 == X+X
BuildMI(*MBB, IP, X86::ADD32rr, 2,
DestReg).addReg(SrcReg).addReg(SrcReg);
BuildMI(*MBB, IP, X86::ADC32rr, 2,