AMDGPU: Preserve undef flag in eliminateFrameIndex

Fixes verifier errors in some call tests.
Not sure why we haven't run into this before.

Test split into separate patch for once
call support is committed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308774 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AMDGPU/SIRegisterInfo.cpp b/lib/Target/AMDGPU/SIRegisterInfo.cpp
index d9a5ce3..bb5e252 100644 (file)
--- a/lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ b/lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -472,17 +472,16 @@ static bool buildMUBUFOffsetLoadStore(const SIInstrInfo *TII,
   if (LoadStoreOp == -1)
     return false;
 
-  unsigned Reg = TII->getNamedOperand(*MI, AMDGPU::OpName::vdata)->getReg();
-
+  const MachineOperand *Reg = TII->getNamedOperand(*MI, AMDGPU::OpName::vdata);
   BuildMI(*MBB, MI, DL, TII->get(LoadStoreOp))
-      .addReg(Reg, getDefRegState(!IsStore))
-      .add(*TII->getNamedOperand(*MI, AMDGPU::OpName::srsrc))
-      .add(*TII->getNamedOperand(*MI, AMDGPU::OpName::soffset))
-      .addImm(Offset)
-      .addImm(0) // glc
-      .addImm(0) // slc
-      .addImm(0) // tfe
-      .setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
+    .add(*Reg)
+    .add(*TII->getNamedOperand(*MI, AMDGPU::OpName::srsrc))
+    .add(*TII->getNamedOperand(*MI, AMDGPU::OpName::soffset))
+    .addImm(Offset)
+    .addImm(0) // glc
+    .addImm(0) // slc
+    .addImm(0) // tfe
+    .setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
   return true;
 }