1 ; This test ensures that "strength reduction" of conditional expressions are 2 ; working. Basically this boils down to converting setlt,gt,le,ge instructions 3 ; into equivalent setne,eq instructions. 4 ; 5 ; RUN: opt < %s -instcombine -S | \ 6 ; RUN: grep -v {icmp eq} | grep -v {icmp ne} | not grep icmp 7 ; END. 8 9 define i1 @test1(i32 %A) { 10 ; setne %A, 0 11 %B = icmp uge i32 %A, 1 ; <i1> [#uses=1] 12 ret i1 %B 13 } 14 15 define i1 @test2(i32 %A) { 16 ; setne %A, 0 17 %B = icmp ugt i32 %A, 0 ; <i1> [#uses=1] 18 ret i1 %B 19 } 20 21 define i1 @test3(i8 %A) { 22 ; setne %A, -128 23 %B = icmp sge i8 %A, -127 ; <i1> [#uses=1] 24 ret i1 %B 25 } 26 27 define i1 @test4(i8 %A) { 28 ; setne %A, 127 29 %B = icmp sle i8 %A, 126 ; <i1> [#uses=1] 30 ret i1 %B 31 } 32 33 define i1 @test5(i8 %A) { 34 ; setne %A, 127 35 %B = icmp slt i8 %A, 127 ; <i1> [#uses=1] 36 ret i1 %B 37 } 38
