Don't combine stores to a swifterror pointer operand to a different type
llvm-svn: 293658
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274df5ea41
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@ -502,7 +502,8 @@ static Instruction *combineLoadToOperationType(InstCombiner &IC, LoadInst &LI) {
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!DL.isNonIntegralPointerType(Ty)) {
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if (all_of(LI.users(), [&LI](User *U) {
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auto *SI = dyn_cast<StoreInst>(U);
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return SI && SI->getPointerOperand() != &LI;
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return SI && SI->getPointerOperand() != &LI &&
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!SI->getPointerOperand()->isSwiftError();
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})) {
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LoadInst *NewLoad = combineLoadToNewType(
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IC, LI,
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@ -219,3 +219,22 @@ entry:
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store %swift.error* %err.res, %swift.error** %err, align 8
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ret void
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}
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; Make sure we preseve the type of the store to a swifterror pointer.
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; CHECK-LABEL: @test19(
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; CHECK: [[A:%.*]] = alloca
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; CHECK: call
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; CHECK: [[BC:%.*]] = bitcast i8** [[A]] to
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; CHECK: [[ERRVAL:%.*]] = load {{.*}}[[BC]]
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; CHECK: store {{.*}}[[ERRVAL]]
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; CHECK: ret
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declare void @initi8(i8**)
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define void @test19(%swift.error** swifterror %err) {
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entry:
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%tmp = alloca i8*, align 8
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call void @initi8(i8** %tmp)
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%swifterror = bitcast i8** %tmp to %swift.error**
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%err.res = load %swift.error*, %swift.error** %swifterror, align 8
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store %swift.error* %err.res, %swift.error** %err, align 8
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ret void
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}
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