38 lines
970 B
LLVM
38 lines
970 B
LLVM
; This test ensures that "strength reduction" of conditional expressions are
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; working. Basically this boils down to converting setlt,gt,le,ge instructions
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; into equivalent setne,eq instructions.
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;
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; RUN: opt < %s -instcombine -S | \
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; RUN: grep -v "icmp eq" | grep -v "icmp ne" | not grep icmp
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; END.
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define i1 @test1(i32 %A) {
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; setne %A, 0
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%B = icmp uge i32 %A, 1 ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test2(i32 %A) {
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; setne %A, 0
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%B = icmp ugt i32 %A, 0 ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test3(i8 %A) {
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; setne %A, -128
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%B = icmp sge i8 %A, -127 ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test4(i8 %A) {
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; setne %A, 127
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%B = icmp sle i8 %A, 126 ; <i1> [#uses=1]
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ret i1 %B
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}
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define i1 @test5(i8 %A) {
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; setne %A, 127
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%B = icmp slt i8 %A, 127 ; <i1> [#uses=1]
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ret i1 %B
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}
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