1 ; RUN: opt < %s -instcombine -S | FileCheck %s 2 ; PR3021 3 4 ; When inst combining an FCMP with the LHS coming from a uitofp instruction, we 5 ; can't lower it to signed ICMP instructions. 6 7 define i1 @test1(i32 %val) { 8 %1 = uitofp i32 %val to double 9 %2 = fcmp ole double %1, 0.000000e+00 10 ; CHECK: icmp eq i32 %val, 0 11 ret i1 %2 12 } 13 14 define i1 @test2(i32 %val) { 15 %1 = uitofp i32 %val to double 16 %2 = fcmp olt double %1, 0.000000e+00 17 ret i1 %2 18 ; CHECK: ret i1 false 19 } 20 21 define i1 @test3(i32 %val) { 22 %1 = uitofp i32 %val to double 23 %2 = fcmp oge double %1, 0.000000e+00 24 ret i1 %2 25 ; CHECK: ret i1 true 26 } 27 28 define i1 @test4(i32 %val) { 29 %1 = uitofp i32 %val to double 30 %2 = fcmp ogt double %1, 0.000000e+00 31 ; CHECK: icmp ne i32 %val, 0 32 ret i1 %2 33 } 34 35 define i1 @test5(i32 %val) { 36 %1 = uitofp i32 %val to double 37 %2 = fcmp ogt double %1, -4.400000e+00 38 ret i1 %2 39 ; CHECK: ret i1 true 40 } 41 42 define i1 @test6(i32 %val) { 43 %1 = uitofp i32 %val to double 44 %2 = fcmp olt double %1, -4.400000e+00 45 ret i1 %2 46 ; CHECK: ret i1 false 47 } 48
