commit 9cff06f37b4f34219778e29a4dd0fc09af77e0eb
author Matt Arsenault <Matthew.Arsenault@amd.com> Mon Jul 10 20:04:35 2017 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Mon Jul 10 20:04:35 2017 +0000
tree d74549ad42693288574dbe6000265d0469427dc2
parent 6c29c5acfe17260c1b3b30663636d34033bdde53

AMDGPU: Allow SIShrinkInstructions to fold FrameIndexes

llvm-svn: 307576

llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp

diff --git a/llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp b/llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
index 449f482..874fbad 100644
--- a/llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
+++ b/llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
@@ -150,6 +150,10 @@
           Src0.setSubReg(0);
           Src0.ChangeToImmediate(MovSrc.getImm());
           ConstantFolded = true;
+        } else if (MovSrc.isFI()) {
+          Src0.setSubReg(0);
+          Src0.ChangeToFrameIndex(MovSrc.getIndex());
+          ConstantFolded = true;
         }
 
         if (ConstantFolded) {