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