llvm-project/llvm/test/Transforms/InstCombine/canonicalize_branch.ll

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; RUN: opt < %s -instcombine -S | FileCheck %s
define i32 @test1(i32 %X, i32 %Y) {
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%C = icmp ne i32 %X, %Y
br i1 %C, label %T, label %F
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; CHECK: @test1
; CHECK: %C = icmp eq i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
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T:
ret i32 12
F:
ret i32 123
}
define i32 @test2(i32 %X, i32 %Y) {
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%C = icmp ule i32 %X, %Y
br i1 %C, label %T, label %F
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; CHECK: @test2
; CHECK: %C = icmp ugt i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
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T:
ret i32 12
F:
ret i32 123
}
define i32 @test3(i32 %X, i32 %Y) {
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%C = icmp uge i32 %X, %Y
br i1 %C, label %T, label %F
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; CHECK: @test3
; CHECK: %C = icmp ult i32 %X, %Y
; CHECK: br i1 %C, label %F, label %T
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T:
ret i32 12
F:
ret i32 123
}