46 lines
1.0 KiB
LLVM
46 lines
1.0 KiB
LLVM
; RUN: opt %loadPolly -polly-codegen -verify-dom-info -analyze < %s
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; Verify that the DominatorTree is preserved correctly for the inserted
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; %polly.stmt.exit.exit block, which serves as new exit block for the generated
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; subregion. In particulat, it must be dominated by %polly.stmt.subregion.enter,
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; the generated subregion's entry block.
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define void @func(i32 %n, i32* noalias nonnull %A) {
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entry:
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br label %loop
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loop:
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%i = phi i32 [0, %entry], [%i.inc, %loop.inc]
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%i.cmp = icmp slt i32 %i, %n
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br i1 %i.cmp, label %body, label %return
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body:
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%skipcond = icmp slt i32 %i, 5
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br i1 %skipcond, label %subregion.enter, label %subregion.skip
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subregion.skip:
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br label %exit
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subregion.enter:
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%sqr = mul i32 %i, %i
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%cond = icmp eq i32 %sqr, 0
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store i32 %i, i32* %A
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br i1 %cond, label %subregion.true, label %subregion.false
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subregion.true:
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br label %exit
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subregion.false:
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br label %exit
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exit:
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br label %loop.inc
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loop.inc:
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%i.inc = add nuw nsw i32 %i, 1
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br label %loop
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return:
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ret void
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}
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