| ; RUN: opt -S -instcombine < %s | FileCheck %s |
| |
| declare double @llvm.fabs.f64(double) nounwind readnone |
| |
| define i1 @test1(float %x, float %y) nounwind { |
| %ext1 = fpext float %x to double |
| %ext2 = fpext float %y to double |
| %cmp = fcmp ogt double %ext1, %ext2 |
| ret i1 %cmp |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: fcmp ogt float %x, %y |
| } |
| |
| define i1 @test2(float %a) nounwind { |
| %ext = fpext float %a to double |
| %cmp = fcmp ogt double %ext, 1.000000e+00 |
| ret i1 %cmp |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: fcmp ogt float %a, 1.0 |
| } |
| |
| define i1 @test3(float %a) nounwind { |
| %ext = fpext float %a to double |
| %cmp = fcmp ogt double %ext, 0x3FF0000000000001 ; more precision than float. |
| ret i1 %cmp |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: fpext float %a to double |
| } |
| |
| define i1 @test4(float %a) nounwind { |
| %ext = fpext float %a to double |
| %cmp = fcmp ogt double %ext, 0x36A0000000000000 ; denormal in float. |
| ret i1 %cmp |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: fpext float %a to double |
| } |
| |
| define i1 @test5(float %a) nounwind { |
| %neg = fsub float -0.000000e+00, %a |
| %cmp = fcmp ogt float %neg, 1.000000e+00 |
| ret i1 %cmp |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: fcmp olt float %a, -1.0 |
| } |
| |
| define i1 @test6(float %x, float %y) nounwind { |
| %neg1 = fsub float -0.000000e+00, %x |
| %neg2 = fsub float -0.000000e+00, %y |
| %cmp = fcmp olt float %neg1, %neg2 |
| ret i1 %cmp |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: fcmp ogt float %x, %y |
| } |
| |
| define i1 @test7(float %x) nounwind readnone ssp noredzone { |
| %ext = fpext float %x to ppc_fp128 |
| %cmp = fcmp ogt ppc_fp128 %ext, 0xM00000000000000000000000000000000 |
| ret i1 %cmp |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: fcmp ogt float %x, 0.000000e+00 |
| } |
| |
| define float @test8(float %x) nounwind readnone optsize ssp { |
| %conv = fpext float %x to double |
| %cmp = fcmp olt double %conv, 0.000000e+00 |
| %conv1 = zext i1 %cmp to i32 |
| %conv2 = sitofp i32 %conv1 to float |
| ret float %conv2 |
| ; Float comparison to zero shouldn't cast to double. |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: fcmp olt float %x, 0.000000e+00 |
| } |
| |
| declare double @fabs(double) nounwind readnone |
| |
| define i32 @test9(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp olt double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NOT: fabs |
| ; CHECK: ret i32 0 |
| } |
| |
| define i32 @test9_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp olt double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test9_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: ret i32 0 |
| } |
| |
| define i32 @test10(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp ole double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp oeq double %a, 0.000000e+00 |
| } |
| |
| define i32 @test10_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp ole double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test10_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp oeq double %a, 0.000000e+00 |
| } |
| |
| define i32 @test11(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp ogt double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp one double %a, 0.000000e+00 |
| } |
| |
| define i32 @test11_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp ogt double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test11_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp one double %a, 0.000000e+00 |
| } |
| |
| define i32 @test12(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp oge double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp ord double %a, 0.000000e+00 |
| } |
| |
| define i32 @test12_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp oge double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test12_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp ord double %a, 0.000000e+00 |
| } |
| |
| define i32 @test13(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp une double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test13( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp une double %a, 0.000000e+00 |
| } |
| |
| define i32 @test13_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp une double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test13_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp une double %a, 0.000000e+00 |
| } |
| |
| define i32 @test14(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp oeq double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test14( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp oeq double %a, 0.000000e+00 |
| } |
| |
| define i32 @test14_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp oeq double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test14_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp oeq double %a, 0.000000e+00 |
| } |
| |
| define i32 @test15(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp one double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test15( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp one double %a, 0.000000e+00 |
| } |
| |
| define i32 @test15_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp one double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test15_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp one double %a, 0.000000e+00 |
| } |
| |
| define i32 @test16(double %a) nounwind { |
| %call = tail call double @fabs(double %a) nounwind |
| %cmp = fcmp ueq double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test16( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp ueq double %a, 0.000000e+00 |
| } |
| |
| define i32 @test16_intrinsic(double %a) nounwind { |
| %call = tail call double @llvm.fabs.f64(double %a) nounwind |
| %cmp = fcmp ueq double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| ; CHECK-LABEL: @test16_intrinsic( |
| ; CHECK-NOT: fabs |
| ; CHECK: fcmp ueq double %a, 0.000000e+00 |
| } |
| |
| ; Don't crash. |
| define i32 @test17(double %a, double (double)* %p) nounwind { |
| %call = tail call double %p(double %a) nounwind |
| %cmp = fcmp ueq double %call, 0.000000e+00 |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| } |
| |
| ; Can fold fcmp with undef on one side by choosing NaN for the undef |
| define i32 @test18_undef_unordered(float %a) nounwind { |
| ; CHECK-LABEL: @test18_undef_unordered |
| ; CHECK: ret i32 1 |
| %cmp = fcmp ueq float %a, undef |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| } |
| ; Can fold fcmp with undef on one side by choosing NaN for the undef |
| define i32 @test18_undef_ordered(float %a) nounwind { |
| ; CHECK-LABEL: @test18_undef_ordered |
| ; CHECK: ret i32 0 |
| %cmp = fcmp oeq float %a, undef |
| %conv = zext i1 %cmp to i32 |
| ret i32 %conv |
| } |
| |
| ; Can fold fcmp with undef on both side |
| ; fcmp u_pred undef, undef -> true |
| ; fcmp o_pred undef, undef -> false |
| ; because whatever you choose for the first undef |
| ; you can choose NaN for the other undef |
| define i1 @test19_undef_unordered() nounwind { |
| ; CHECK-LABEL: @test19_undef |
| ; CHECK: ret i1 true |
| %cmp = fcmp ueq float undef, undef |
| ret i1 %cmp |
| } |
| define i1 @test19_undef_ordered() nounwind { |
| ; CHECK-LABEL: @test19_undef |
| ; CHECK: ret i1 false |
| %cmp = fcmp oeq float undef, undef |
| ret i1 %cmp |
| } |