[llvm] r315162 - [X86] Simplify some code in getInsertVINSERTImmediate and getExtractVEXTRACTImmediate. NFC

[Craig Topper via llvm-commits]

Author: ctopper
Date: Sat Oct  7 18:33:42 2017
New Revision: 315162

URL: http://llvm.org/viewvc/llvm-project?rev=315162&view=rev
Log:
[X86] Simplify some code in getInsertVINSERTImmediate and getExtractVEXTRACTImmediate. NFC

Replace one of the divides with a multiply.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp?rev=315162&r1=315161&r2=315162&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp Sat Oct  7 18:33:42 2017
@@ -371,8 +371,7 @@ namespace {
       assert((VecWidth == 128 || VecWidth == 256) && "Unexpected vector width");
       uint64_t Index = N->getConstantOperandVal(1);
       MVT VecVT = N->getOperand(0).getSimpleValueType();
-      unsigned NumElemsPerChunk = VecWidth / VecVT.getScalarSizeInBits();
-      return getI8Imm(Index / NumElemsPerChunk, DL);
+      return getI8Imm((Index * VecVT.getScalarSizeInBits()) / VecWidth, DL);
     }
 
     SDValue getInsertVINSERTImmediate(SDNode *N, unsigned VecWidth,
@@ -380,8 +379,7 @@ namespace {
       assert((VecWidth == 128 || VecWidth == 256) && "Unexpected vector width");
       uint64_t Index = N->getConstantOperandVal(2);
       MVT VecVT = N->getSimpleValueType(0);
-      unsigned NumElemsPerChunk = VecWidth / VecVT.getScalarSizeInBits();
-      return getI8Imm(Index / NumElemsPerChunk, DL);
+      return getI8Imm((Index * VecVT.getScalarSizeInBits()) / VecWidth, DL);
     }
 
     /// Return an SDNode that returns the value of the global base register.