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35 lines
971 B
35 lines
971 B
4 months ago
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; RUN: opt -S -instcombine < %s | FileCheck %s
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@g = external global i32
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define i1 @test(i32 %other) {
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; CHECK-LABEL: @test
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; CHECK: %test = icmp sgt i32 %other, 0
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%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
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%cmp = icmp slt i32 %positive, %other
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%sel = select i1 %cmp, i32 %positive, i32 %other
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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define i1 @test2(i32 %other) {
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; CHECK-LABEL: @test2
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; CHECK: %test = icmp sgt i32 %other, 0
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%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
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%cmp = icmp slt i32 %other, %positive
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%sel = select i1 %cmp, i32 %other, i32 %positive
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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; %positive might be zero
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define i1 @test3(i32 %other) {
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; CHECK-LABEL: @test3
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; CHECK: %test = icmp sgt i32 %sel, 0
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%positive = load i32, i32* @g, !range !{i32 0, i32 2048}
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%cmp = icmp slt i32 %positive, %other
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%sel = select i1 %cmp, i32 %positive, i32 %other
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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