RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-04 17:58:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix a recently added optimization to not crash on vectors.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51471 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2008-05-23 03:26:47 +00:00
parent a332f17c8c
commit 39ac3b57bc
2 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -3276,8 +3276,16 @@ Instruction *InstCombiner::commonIDivTransforms(BinaryOperator &I) {
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
// (sdiv X, X) --> 1 (udiv X, X) --> 1
if (Op0 == Op1)
return ReplaceInstUsesWith(I, ConstantInt::get(I.getType(), 1));
if (Op0 == Op1) {
if (const VectorType *Ty = dyn_cast<VectorType>(I.getType())) {
ConstantInt *CI = ConstantInt::get(Ty->getElementType(), 1);
std::vector<Constant*> Elts(Ty->getNumElements(), CI);
return ReplaceInstUsesWith(I, ConstantVector::get(Elts));
}
ConstantInt *CI = ConstantInt::get(I.getType(), 1);
return ReplaceInstUsesWith(I, CI);
}
if (Instruction *Common = commonDivTransforms(I))
return Common;

6
test/Transforms/InstCombine/2008-05-22-IDivVector.ll Normal file
View File

@ -0,0 +1,6 @@
; RUN: llvm-as < %s | opt -instcombine -disable-output
define <3 x i8> @f(<3 x i8> %i) {
%A = sdiv <3 x i8> %i, %i
ret <3 x i8> %A
}