commit 2cba91b8dbf408d4e81195e821939e9409746f25
author Matt Arsenault <Matthew.Arsenault@amd.com> Tue May 21 23:23:16 2019 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Tue May 21 23:23:16 2019 +0000
tree dddcc60383cfe287f89c4cf0fc004df29608a1ab
parent eea81c20fef4f5bdcbe4d0a240591c10d313fa1b

AMDGPU: Assume calls read exec

llvm-svn: 361333

llvm/lib/Target/AMDGPU/SIInstrInfo.cpp

diff --git a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
index dd7f173..e781253 100644
--- a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
@@ -2514,6 +2514,10 @@
     return MI.readsRegister(AMDGPU::EXEC, &RI);
   }
 
+  // Make a conservative assumption about the callee.
+  if (MI.isCall())
+    return true;
+
   // Be conservative with any unhandled generic opcodes.
   if (!isTargetSpecificOpcode(MI.getOpcode()))
     return true;