[llvm] r308774 - AMDGPU: Preserve undef flag in eliminateFrameIndex

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Fri Jul 21 12:31:44 2017
New Revision: 308774

URL: http://llvm.org/viewvc/llvm-project?rev=308774&view=rev
Log:
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.

Modified:
    llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.cpp?rev=308774&r1=308773&r2=308774&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIRegisterInfo.cpp Fri Jul 21 12:31:44 2017
@@ -472,17 +472,16 @@ static bool buildMUBUFOffsetLoadStore(co
   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;
 }