4ce58833d3
ConstantRange uses `[-1, -1)` as the canonical form of a full set. Therefore, the `for (APInt I = Lower; I != Upper; ++I)` idiom doesn't work for full ranges. This patch fixes the value enumeration in `ConstantComparesGatherer` to prevent missing values for full sets. Closes https://github.com/llvm/llvm-project/issues/166369.
38 lines
766 B
LLVM
38 lines
766 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -passes=simplifycfg < %s | FileCheck %s
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; Make sure we handle full-set ranges correctly.
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define void @test_i1() {
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; CHECK-LABEL: define void @test_i1() {
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; CHECK-NEXT: [[BB:.*:]]
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; CHECK-NEXT: ret void
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;
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bb:
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%icmp = icmp ugt i1 false, true
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br label %bb5
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bb5:
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%select = select i1 %icmp, i1 %icmp, i1 false
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br i1 %select, label %bb5, label %bb6
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bb6:
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ret void
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}
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define void @test_i3() {
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; CHECK-LABEL: define void @test_i3() {
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; CHECK-NEXT: [[BB:.*:]]
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; CHECK-NEXT: ret void
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;
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bb:
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%icmp = icmp ugt i3 0, 7
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br label %bb5
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bb5:
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%select = select i1 %icmp, i1 %icmp, i1 false
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br i1 %select, label %bb5, label %bb6
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bb6:
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ret void
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}
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