Review changes

Author: linuxrocks123

llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp

@@ -5304,8 +5304,7 @@ SDValue AMDGPUTargetLowering::expandABS(SDNode *N, SelectionDAG &DAG,
   if (!IsNegative)
     return TruncResult;
 
-  return DAG.getNode(ISD::SUB, DL, N->getValueType(0),
-                     DAG.getConstant(0, DL, N->getValueType(0)), TruncResult);
+  return DAG.getNegative(TruncResult,DL,N->getValueType(0));
 }
 
 SDValue AMDGPUTargetLowering::PerformDAGCombine(SDNode *N,

llvm/lib/Target/AMDGPU/SIISelLowering.cpp

@@ -42,7 +42,6 @@
 #include "llvm/IR/IntrinsicsR600.h"
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/KnownBits.h"
 #include "llvm/Support/ModRef.h"
 #include "llvm/Transforms/Utils/LowerAtomic.h"