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[CIR][CodeGen][BugFix] don't place alloca before the label #875

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Merged
merged 3 commits into from
Sep 23, 2024
Merged

[CIR][CodeGen][BugFix] don't place alloca before the label #875

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aa967bf
[CIR][CodeGen][BugFix] don't place alloca before the label
gitoleg Sep 23, 2024
17d4a11
minor
gitoleg Sep 23, 2024
83d5b28
Add EOL
bcardosolopes Sep 23, 2024
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8 changes: 4 additions & 4 deletions clang/include/clang/CIR/Dialect/Builder/CIRBaseBuilder.h
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Original file line number Diff line number Diff line change
Expand Up @@ -538,14 +538,14 @@ class CIRBaseBuilderTy : public mlir::OpBuilder {
// ----------------------
//
OpBuilder::InsertPoint getBestAllocaInsertPoint(mlir::Block *block) {
auto lastAlloca =
auto last =
std::find_if(block->rbegin(), block->rend(), [](mlir::Operation &op) {
return mlir::isa<mlir::cir::AllocaOp>(&op);
return mlir::isa<mlir::cir::AllocaOp, mlir::cir::LabelOp>(&op);
});

if (lastAlloca != block->rend())
if (last != block->rend())
return OpBuilder::InsertPoint(block,
++mlir::Block::iterator(&*lastAlloca));
++mlir::Block::iterator(&*last));
return OpBuilder::InsertPoint(block, block->begin());
};

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18 changes: 17 additions & 1 deletion clang/test/CIR/CodeGen/goto.cpp
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Expand Up @@ -271,4 +271,20 @@ void flatLoopWithNoTerminatorInFront(int* ptr) {
// CHECK: ^bb[[#RETURN]]:
// CHECK: cir.return
// CHECK: }
// CHECK:}
// CHECK:}

struct S {};
struct S get();
void bar(struct S);

void foo() {
{
label:
bar(get());
}
}

// NOFLAT: cir.func @_Z3foov()
// NOFLAT: cir.scope {
// NOFLAT: cir.label "label"
// NOFLAT: %0 = cir.alloca !ty_S, !cir.ptr<!ty_S>, ["agg.tmp0"]