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Remove more odd code that tries to account for an off by 1 problem in vec3 shuffles that doesn't really exist. 

llvm-svn: 187561
This commit is contained in:
Craig Topper 2013-08-01 06:59:29 +00:00
parent b9b7ea697b
commit ad5ccc2d75
1 changed files with 0 additions and 8 deletions
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8
clang/lib/CodeGen/CGExprScalar.cpp
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@ -944,14 +944,6 @@ Value *ScalarExprEmitter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
Value *Indx = Builder.CreateExtractElement(Mask, IIndx, "shuf_idx");
Indx = Builder.CreateZExt(Indx, CGF.Int32Ty, "idx_zext");
// Handle vec3 special since the index will be off by one for the RHS.
if ((LHSElts == 6) && (E->getNumSubExprs() == 3)) {
Value *cmpIndx, *newIndx;
cmpIndx = Builder.CreateICmpUGT(Indx, Builder.getInt32(3),
"cmp_shuf_idx");
newIndx = Builder.CreateSub(Indx, Builder.getInt32(1), "shuf_idx_adj");
Indx = Builder.CreateSelect(cmpIndx, newIndx, Indx, "sel_shuf_idx");
}
Value *VExt = Builder.CreateExtractElement(LHS, Indx, "shuf_elt");
NewV = Builder.CreateInsertElement(NewV, VExt, IIndx, "shuf_ins");
}