[AMDGPU] Return correct value from SDWA pass

Differential Revision: https://reviews.llvm.org/D33927

llvm-svn: 304805
diff --git a/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp b/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
index c4a17f5..f4ddf18 100644
--- a/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
+++ b/llvm/lib/Target/AMDGPU/SIPeepholeSDWA.cpp
@@ -786,8 +786,9 @@
   PotentialMatches.clear();
   SDWAOperands.clear();
 
+  bool Ret = !ConvertedInstructions.empty();
   while (!ConvertedInstructions.empty())
     legalizeScalarOperands(*ConvertedInstructions.pop_back_val());
 
-  return false;
+  return Ret;
 }