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adding patch for LLVM. Fix for trunk(select)

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This commit is contained in:
Ilia Filippov
2014-01-21 17:26:05 +04:00
parent 37e12045fb
commit 3b2fe1d8f6
1 changed files with 34 additions and 0 deletions
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34
llvm_patches/3_3_3_4_r198267_trunc_of_select.patch Normal file
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@@ -0,0 +1,34 @@
Index: lib/IR/ConstantFold.cpp
===================================================================
--- lib/IR/ConstantFold.cpp (revision 197981)
+++ lib/IR/ConstantFold.cpp (working copy)
@@ -705,12 +705,23 @@
SmallVector<Constant*, 16> Result;
Type *Ty = IntegerType::get(CondV->getContext(), 32);
for (unsigned i = 0, e = V1->getType()->getVectorNumElements(); i != e;++i){
- ConstantInt *Cond = dyn_cast<ConstantInt>(CondV->getOperand(i));
- if (Cond == 0) break;
-
- Constant *V = Cond->isNullValue() ? V2 : V1;
- Constant *Res = ConstantExpr::getExtractElement(V, ConstantInt::get(Ty, i));
- Result.push_back(Res);
+ Constant *V;
+ Constant *V1Element = ConstantExpr::getExtractElement(V1,
+ ConstantInt::get(Ty, i));
+ Constant *V2Element = ConstantExpr::getExtractElement(V2,
+ ConstantInt::get(Ty, i));
+ Constant *Cond = dyn_cast<Constant>(CondV->getOperand(i));
+ if (V1Element == V2Element) {
+ V = V1Element;
+ }
+ else if (isa<UndefValue>(Cond)) {
+ V = isa<UndefValue>(V1Element) ? V1Element : V2Element;
+ }
+ else {
+ if (!isa<ConstantInt>(Cond)) break;
+ V = Cond->isNullValue() ? V2Element : V1Element;
+ }
+ Result.push_back(V);
}
// If we were able to build the vector, return it.