Fix an unfolding bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43212 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index c78db16a42e750a44147f4afc997ba90d1255deb..72e0fe44b306cb83fda8556e4938c2bd30c864df 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -1224,7 +1224,8 @@ bool X86RegisterInfo::unfoldMemoryOperand(MachineFunction &MF, MachineInstr *MI,
     MIB.addReg(Reg, true);
   for (unsigned i = 0, e = BeforeOps.size(); i != e; ++i)
     MIB = X86InstrAddOperand(MIB, BeforeOps[i]);
-  MIB.addReg(Reg);
+  if (FoldedLoad)
+    MIB.addReg(Reg);
   for (unsigned i = 0, e = AfterOps.size(); i != e; ++i)
     MIB = X86InstrAddOperand(MIB, AfterOps[i]);
   for (unsigned i = 0, e = ImpOps.size(); i != e; ++i) {