| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instsimplify -S | FileCheck %s |
| |
| ; fneg (fneg X) ==> X |
| define float @fneg_fneg_var(float %a) { |
| ; CHECK-LABEL: @fneg_fneg_var( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %r = fneg float %a |
| %r1 = fneg float %r |
| ret float %r1 |
| } |
| |
| ; fneg (fsub -0.0, X) ==> X |
| define float @fsub_-0_x(float %a) { |
| ; CHECK-LABEL: @fsub_-0_x( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %t1 = fsub float -0.0, %a |
| %ret = fneg float %t1 |
| ret float %ret |
| } |
| |
| define <2 x float> @fsub_-0_x_vec(<2 x float> %a) { |
| ; CHECK-LABEL: @fsub_-0_x_vec( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fsub <2 x float> <float -0.0, float -0.0>, %a |
| %ret = fneg <2 x float> %t1 |
| ret <2 x float> %ret |
| } |
| |
| define <2 x float> @fsub_-0_x_vec_undef_elts(<2 x float> %a) { |
| ; CHECK-LABEL: @fsub_-0_x_vec_undef_elts( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fsub <2 x float> <float -0.0, float undef>, %a |
| %ret = fneg <2 x float> %t1 |
| ret <2 x float> %ret |
| } |
| |
| define <2 x float> @fsub_negzero_vec_undef_elts(<2 x float> %x) { |
| ; CHECK-LABEL: @fsub_negzero_vec_undef_elts( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %r = fsub nsz <2 x float> %x, <float undef, float -0.0> |
| ret <2 x float> %r |
| } |
| |
| ; fsub -0.0, (fsub -0.0, X) ==> X |
| define float @fsub_-0_-0_x(float %a) { |
| ; CHECK-LABEL: @fsub_-0_-0_x( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %t1 = fsub float -0.0, %a |
| %ret = fsub float -0.0, %t1 |
| ret float %ret |
| } |
| |
| ; fsub -0.0, (fneg X) ==> X |
| define float @fneg_x(float %a) { |
| ; CHECK-LABEL: @fneg_x( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %t1 = fneg float %a |
| %ret = fsub float -0.0, %t1 |
| ret float %ret |
| } |
| |
| define <2 x float> @fsub_-0_-0_x_vec(<2 x float> %a) { |
| ; CHECK-LABEL: @fsub_-0_-0_x_vec( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fsub <2 x float> <float -0.0, float -0.0>, %a |
| %ret = fsub <2 x float> <float -0.0, float -0.0>, %t1 |
| ret <2 x float> %ret |
| } |
| |
| define <2 x float> @fneg_x_vec(<2 x float> %a) { |
| ; CHECK-LABEL: @fneg_x_vec( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fneg <2 x float> %a |
| %ret = fsub <2 x float> <float -0.0, float -0.0>, %t1 |
| ret <2 x float> %ret |
| } |
| |
| define <2 x float> @fsub_-0_-0_x_vec_undef_elts(<2 x float> %a) { |
| ; CHECK-LABEL: @fsub_-0_-0_x_vec_undef_elts( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fsub <2 x float> <float undef, float -0.0>, %a |
| %ret = fsub <2 x float> <float -0.0, float undef>, %t1 |
| ret <2 x float> %ret |
| } |
| |
| define <2 x float> @fneg_x_vec_undef_elts(<2 x float> %a) { |
| ; CHECK-LABEL: @fneg_x_vec_undef_elts( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %t1 = fneg <2 x float> %a |
| %ret = fsub <2 x float> <float -0.0, float undef>, %t1 |
| ret <2 x float> %ret |
| } |
| |
| ; fsub -0.0, (fsub 0.0, X) != X |
| define float @fsub_-0_0_x(float %a) { |
| ; CHECK-LABEL: @fsub_-0_0_x( |
| ; CHECK-NEXT: [[T1:%.*]] = fsub float 0.000000e+00, [[A:%.*]] |
| ; CHECK-NEXT: [[RET:%.*]] = fsub float -0.000000e+00, [[T1]] |
| ; CHECK-NEXT: ret float [[RET]] |
| ; |
| %t1 = fsub float 0.0, %a |
| %ret = fsub float -0.0, %t1 |
| ret float %ret |
| } |
| |
| ; fsub 0.0, (fsub -0.0, X) != X |
| define float @fsub_0_-0_x(float %a) { |
| ; CHECK-LABEL: @fsub_0_-0_x( |
| ; CHECK-NEXT: [[T1:%.*]] = fsub float -0.000000e+00, [[A:%.*]] |
| ; CHECK-NEXT: [[RET:%.*]] = fsub float 0.000000e+00, [[T1]] |
| ; CHECK-NEXT: ret float [[RET]] |
| ; |
| %t1 = fsub float -0.0, %a |
| %ret = fsub float 0.0, %t1 |
| ret float %ret |
| } |
| |
| ; fsub X, 0 ==> X |
| define float @fsub_x_0(float %x) { |
| ; CHECK-LABEL: @fsub_x_0( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %r = fsub float %x, 0.0 |
| ret float %r |
| } |
| |
| define <2 x float> @fsub_x_0_vec_undef(<2 x float> %x) { |
| ; CHECK-LABEL: @fsub_x_0_vec_undef( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %r = fsub <2 x float> %x, <float undef, float 0.0> |
| ret <2 x float> %r |
| } |
| |
| ; fadd X, -0 ==> X |
| define float @fadd_x_n0(float %a) { |
| ; CHECK-LABEL: @fadd_x_n0( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %ret = fadd float %a, -0.0 |
| ret float %ret |
| } |
| |
| define <2 x float> @fadd_x_n0_vec_undef_elt(<2 x float> %a) { |
| ; CHECK-LABEL: @fadd_x_n0_vec_undef_elt( |
| ; CHECK-NEXT: ret <2 x float> [[A:%.*]] |
| ; |
| %ret = fadd <2 x float> %a, <float -0.0, float undef> |
| ret <2 x float> %ret |
| } |
| |
| ; fmul X, 1.0 ==> X |
| define double @fmul_X_1(double %a) { |
| ; CHECK-LABEL: @fmul_X_1( |
| ; CHECK-NEXT: ret double [[A:%.*]] |
| ; |
| %b = fmul double 1.0, %a |
| ret double %b |
| } |
| |
| ; PR2642 |
| define <4 x float> @fmul_X_1_vec(<4 x float> %x) { |
| ; CHECK-LABEL: @fmul_X_1_vec( |
| ; CHECK-NEXT: ret <4 x float> [[X:%.*]] |
| ; |
| %m = fmul <4 x float> %x, <float 1.0, float 1.0, float 1.0, float 1.0> |
| ret <4 x float> %m |
| } |
| |
| ; fdiv X, 1.0 ==> X |
| define float @fdiv_x_1(float %a) { |
| ; CHECK-LABEL: @fdiv_x_1( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %ret = fdiv float %a, 1.0 |
| ret float %ret |
| } |
| |
| ; We can't optimize away the fadd in this test because the input |
| ; value to the function and subsequently to the fadd may be -0.0. |
| ; In that one special case, the result of the fadd should be +0.0 |
| ; rather than the first parameter of the fadd. |
| |
| ; Fragile test warning: We need 6 sqrt calls to trigger the bug |
| ; because the internal logic has a magic recursion limit of 6. |
| ; This is presented without any explanation or ability to customize. |
| |
| declare float @sqrtf(float) |
| |
| define float @PR22688(float %x) { |
| ; CHECK-LABEL: @PR22688( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call float @sqrtf(float [[X:%.*]]) |
| ; CHECK-NEXT: [[TMP2:%.*]] = call float @sqrtf(float [[TMP1]]) |
| ; CHECK-NEXT: [[TMP3:%.*]] = call float @sqrtf(float [[TMP2]]) |
| ; CHECK-NEXT: [[TMP4:%.*]] = call float @sqrtf(float [[TMP3]]) |
| ; CHECK-NEXT: [[TMP5:%.*]] = call float @sqrtf(float [[TMP4]]) |
| ; CHECK-NEXT: [[TMP6:%.*]] = call float @sqrtf(float [[TMP5]]) |
| ; CHECK-NEXT: [[TMP7:%.*]] = fadd float [[TMP6]], 0.000000e+00 |
| ; CHECK-NEXT: ret float [[TMP7]] |
| ; |
| %1 = call float @sqrtf(float %x) |
| %2 = call float @sqrtf(float %1) |
| %3 = call float @sqrtf(float %2) |
| %4 = call float @sqrtf(float %3) |
| %5 = call float @sqrtf(float %4) |
| %6 = call float @sqrtf(float %5) |
| %7 = fadd float %6, 0.0 |
| ret float %7 |
| } |
| |
| declare float @llvm.fabs.f32(float) |
| declare <2 x float> @llvm.fabs.v2f32(<2 x float>) |
| declare float @llvm.sqrt.f32(float) |
| declare float @llvm.maxnum.f32(float, float) |
| |
| define float @fabs_select_positive_constants(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_positive_constants( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 1.000000e+00, float 2.000000e+00 |
| ; CHECK-NEXT: ret float [[SELECT]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 1.0, float 2.0 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_positive_constants_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_positive_constants_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 1.000000e+00, float 1.000000e+00>, <2 x float> <float 2.000000e+00, float 2.000000e+00> |
| ; CHECK-NEXT: ret <2 x float> [[SELECT]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 1.0, float 1.0>, <2 x float> <float 2.0, float 2.0> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_constant_variable(i32 %c, float %x) { |
| ; CHECK-LABEL: @fabs_select_constant_variable( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 1.000000e+00, float [[X:%.*]] |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 1.0, float %x |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_constant_variable_vector(i32 %c, <2 x float> %x) { |
| ; CHECK-LABEL: @fabs_select_constant_variable_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 1.000000e+00, float 1.000000e+00>, <2 x float> [[X:%.*]] |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 1.0, float 1.0>, <2 x float> %x |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_neg0_pos0(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_neg0_pos0( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float -0.000000e+00, float 0.000000e+00 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float -0.0, float 0.0 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_neg0_pos0_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_neg0_pos0_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float -0.000000e+00, float -0.000000e+00>, <2 x float> zeroinitializer |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float -0.0, float -0.0>, <2 x float> <float 0.0, float 0.0> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_neg0_neg1(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_neg0_neg1( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float -0.000000e+00, float -1.000000e+00 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float -0.0, float -1.0 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_neg0_neg1_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_neg0_neg1_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float -0.000000e+00, float -0.000000e+00>, <2 x float> <float -1.000000e+00, float -1.000000e+00> |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float -0.0, float -0.0>, <2 x float> <float -1.0, float -1.0> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_nan_nan(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_nan_nan( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 0x7FF8000000000000, float 0x7FF8000100000000 |
| ; CHECK-NEXT: ret float [[SELECT]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 0x7FF8000000000000, float 0x7FF8000100000000 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_nan_nan_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_nan_nan_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000>, <2 x float> <float 0x7FF8000100000000, float 0x7FF8000100000000> |
| ; CHECK-NEXT: ret <2 x float> [[SELECT]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000>, <2 x float> <float 0x7FF8000100000000, float 0x7FF8000100000000> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_negnan_nan(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_nan( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 0xFFF8000000000000, float 0x7FF8000000000000 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 0xFFF8000000000000, float 0x7FF8000000000000 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_negnan_nan_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_nan_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000> |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_negnan_negnan(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_negnan( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 0xFFF8000000000000, float 0x7FF8000100000000 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 0xFFF8000000000000, float 0x7FF8000100000000 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_negnan_negnan_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_negnan_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float 0x7FF8000100000000, float 0x7FF8000100000000> |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float 0x7FF8000100000000, float 0x7FF8000100000000> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_negnan_negzero(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_negzero( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 0xFFF8000000000000, float -0.000000e+00 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 0xFFF8000000000000, float -0.0 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_negnan_negzero_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_negzero_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float -0.000000e+00, float -0.000000e+00> |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float -0.0, float -0.0> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| define float @fabs_select_negnan_zero(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_zero( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float 0xFFF8000000000000, float 0.000000e+00 |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, float 0xFFF8000000000000, float 0.0 |
| %fabs = call float @llvm.fabs.f32(float %select) |
| ret float %fabs |
| } |
| |
| define <2 x float> @fabs_select_negnan_zero_vector(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_negnan_zero_vector( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> zeroinitializer |
| ; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[SELECT]]) |
| ; CHECK-NEXT: ret <2 x float> [[FABS]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 0xFFF8000000000000, float 0xFFF8000000000000>, <2 x float> <float 0.0, float 0.0> |
| %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %select) |
| ret <2 x float> %fabs |
| } |
| |
| ; The fabs can't be eliminated because llvm.sqrt.f32 may return -0 or NaN with |
| ; an arbitrary sign bit. |
| define float @fabs_sqrt(float %a) { |
| ; CHECK-LABEL: @fabs_sqrt( |
| ; CHECK-NEXT: [[SQRT:%.*]] = call float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SQRT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %sqrt = call float @llvm.sqrt.f32(float %a) |
| %fabs = call float @llvm.fabs.f32(float %sqrt) |
| ret float %fabs |
| } |
| |
| ; The fabs can't be eliminated because the nnan sqrt may still return -0. |
| define float @fabs_sqrt_nnan(float %a) { |
| ; CHECK-LABEL: @fabs_sqrt_nnan( |
| ; CHECK-NEXT: [[SQRT:%.*]] = call nnan float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SQRT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %sqrt = call nnan float @llvm.sqrt.f32(float %a) |
| %fabs = call float @llvm.fabs.f32(float %sqrt) |
| ret float %fabs |
| } |
| |
| ; The fabs can't be eliminated because the nsz sqrt may still return NaN. |
| define float @fabs_sqrt_nsz(float %a) { |
| ; CHECK-LABEL: @fabs_sqrt_nsz( |
| ; CHECK-NEXT: [[SQRT:%.*]] = call nsz float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SQRT]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %sqrt = call nsz float @llvm.sqrt.f32(float %a) |
| %fabs = call float @llvm.fabs.f32(float %sqrt) |
| ret float %fabs |
| } |
| |
| ; The fabs can be eliminated because we're nsz and nnan. |
| define float @fabs_sqrt_nnan_nsz(float %a) { |
| ; CHECK-LABEL: @fabs_sqrt_nnan_nsz( |
| ; CHECK-NEXT: [[SQRT:%.*]] = call nnan nsz float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: ret float [[SQRT]] |
| ; |
| %sqrt = call nnan nsz float @llvm.sqrt.f32(float %a) |
| %fabs = call float @llvm.fabs.f32(float %sqrt) |
| ret float %fabs |
| } |
| |
| ; The second fabs can be eliminated because the operand to sqrt cannot be -0. |
| define float @fabs_sqrt_nnan_fabs(float %a) { |
| ; CHECK-LABEL: @fabs_sqrt_nnan_fabs( |
| ; CHECK-NEXT: [[B:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[SQRT:%.*]] = call nnan float @llvm.sqrt.f32(float [[B]]) |
| ; CHECK-NEXT: ret float [[SQRT]] |
| ; |
| %b = call float @llvm.fabs.f32(float %a) |
| %sqrt = call nnan float @llvm.sqrt.f32(float %b) |
| %fabs = call float @llvm.fabs.f32(float %sqrt) |
| ret float %fabs |
| } |
| |
| define float @fabs_select_positive_constants_vector_extract(i32 %c) { |
| ; CHECK-LABEL: @fabs_select_positive_constants_vector_extract( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 |
| ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 1.000000e+00, float 1.000000e+00>, <2 x float> <float 2.000000e+00, float 2.000000e+00> |
| ; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <2 x float> [[SELECT]], i32 0 |
| ; CHECK-NEXT: ret float [[EXTRACT]] |
| ; |
| %cmp = icmp eq i32 %c, 0 |
| %select = select i1 %cmp, <2 x float> <float 1.0, float 1.0>, <2 x float> <float 2.0, float 2.0> |
| %extract = extractelement <2 x float> %select, i32 0 |
| %fabs = call float @llvm.fabs.f32(float %extract) |
| ret float %fabs |
| } |
| |
| ; Y - (Y - X) --> X |
| |
| define float @fsub_fsub_common_op(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fsub_common_op( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %s = fsub float %y, %x |
| %r = fsub reassoc nsz float %y, %s |
| ret float %r |
| } |
| |
| define <2 x float> @fsub_fsub_common_op_vec(<2 x float> %x, <2 x float> %y) { |
| ; CHECK-LABEL: @fsub_fsub_common_op_vec( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %s = fsub <2 x float> %y, %x |
| %r = fsub reassoc nsz <2 x float> %y, %s |
| ret <2 x float> %r |
| } |
| |
| ; Negative test - fsub is not commutative. |
| ; Y - (X - Y) --> (Y - X) + Y (canonicalized) |
| |
| define float @fsub_fsub_wrong_common_op(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fsub_wrong_common_op( |
| ; CHECK-NEXT: [[S:%.*]] = fsub float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nsz float [[Y]], [[S]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %s = fsub float %x, %y |
| %r = fsub reassoc nsz float %y, %s |
| ret float %r |
| } |
| |
| ; Negative test - negated operand needed. |
| ; (Y - X) - Y --> -X |
| |
| define float @fsub_fsub_common_op_wrong_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fsub_common_op_wrong_commute( |
| ; CHECK-NEXT: [[S:%.*]] = fsub float [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nsz float [[S]], [[Y]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %s = fsub float %y, %x |
| %r = fsub reassoc nsz float %s, %y |
| ret float %r |
| } |
| |
| ; Negative test - fsub is not commutative. |
| ; (X - Y) - Y --> ? |
| |
| define float @fsub_fsub_wrong_common_op_wrong_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fsub_wrong_common_op_wrong_commute( |
| ; CHECK-NEXT: [[S:%.*]] = fsub float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nsz float [[S]], [[Y]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %s = fsub float %x, %y |
| %r = fsub reassoc nsz float %s, %y |
| ret float %r |
| } |
| |
| ; (Y + X) - Y --> X |
| |
| define float @fadd_fsub_common_op(float %x, float %y) { |
| ; CHECK-LABEL: @fadd_fsub_common_op( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %a = fadd float %y, %x |
| %r = fsub reassoc nsz float %a, %y |
| ret float %r |
| } |
| |
| ; (X + Y) - Y --> X |
| |
| define <2 x float> @fadd_fsub_common_op_commute_vec(<2 x float> %x, <2 x float> %y) { |
| ; CHECK-LABEL: @fadd_fsub_common_op_commute_vec( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %a = fadd <2 x float> %x, %y |
| %r = fsub reassoc nsz <2 x float> %a, %y |
| ret <2 x float> %r |
| } |
| |
| ; Negative test - negated operand needed. |
| ; Y - (Y + X) --> -X |
| |
| define float @fadd_fsub_common_op_wrong_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fadd_fsub_common_op_wrong_commute( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nsz float [[Y]], [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %y, %x |
| %r = fsub reassoc nsz float %y, %a |
| ret float %r |
| } |
| |
| ; Negative test - negated operand needed. |
| ; Y - (X + Y) --> -X |
| |
| define float @fadd_fsub_common_op_wrong_commute_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fadd_fsub_common_op_wrong_commute_commute( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nsz float [[Y]], [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, %y |
| %r = fsub reassoc nsz float %y, %a |
| ret float %r |
| } |
| |
| ; Y + (X - Y) --> X |
| |
| define <2 x float> @fsub_fadd_common_op_vec(<2 x float> %x, <2 x float> %y) { |
| ; CHECK-LABEL: @fsub_fadd_common_op_vec( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %s = fsub <2 x float> %x, %y |
| %r = fadd reassoc nsz <2 x float> %y, %s |
| ret <2 x float> %r |
| } |
| |
| ; (X - Y) + Y --> X |
| |
| define float @fsub_fadd_common_op_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fadd_common_op_commute( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %s = fsub float %x, %y |
| %r = fadd reassoc nsz float %s, %y |
| ret float %r |
| } |
| |
| ; Negative test. |
| ; Y + (Y - X) --> ? |
| |
| define float @fsub_fadd_common_op_wrong_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fadd_common_op_wrong_commute( |
| ; CHECK-NEXT: [[S:%.*]] = fsub float [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fadd reassoc nsz float [[Y]], [[S]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %s = fsub float %y, %x |
| %r = fadd reassoc nsz float %y, %s |
| ret float %r |
| } |
| |
| ; Negative test. |
| ; (Y - X) + Y --> ? |
| |
| define float @fsub_fadd_common_op_wrong_commute_commute(float %x, float %y) { |
| ; CHECK-LABEL: @fsub_fadd_common_op_wrong_commute_commute( |
| ; CHECK-NEXT: [[S:%.*]] = fsub float [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fadd reassoc nsz float [[S]], [[Y]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %s = fsub float %y, %x |
| %r = fadd reassoc nsz float %s, %y |
| ret float %r |
| } |
| |
| ; PR46627 - https://bugs.llvm.org/show_bug.cgi?id=46627 |
| |
| define float @maxnum_with_poszero_op(float %a) { |
| ; CHECK-LABEL: @maxnum_with_poszero_op( |
| ; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[A:%.*]], float 0.000000e+00) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[MAX]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %max = call float @llvm.maxnum.f32(float %a, float 0.0) |
| %fabs = call float @llvm.fabs.f32(float %max) |
| ret float %fabs |
| } |
| |
| define float @maxnum_with_poszero_op_commute(float %a) { |
| ; CHECK-LABEL: @maxnum_with_poszero_op_commute( |
| ; CHECK-NEXT: [[SQRT:%.*]] = call float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float 0.000000e+00, float [[SQRT]]) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[MAX]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %sqrt = call float @llvm.sqrt.f32(float %a) |
| %max = call float @llvm.maxnum.f32(float 0.0, float %sqrt) |
| %fabs = call float @llvm.fabs.f32(float %max) |
| ret float %fabs |
| } |
| |
| define float @maxnum_with_negzero_op(float %a) { |
| ; CHECK-LABEL: @maxnum_with_negzero_op( |
| ; CHECK-NEXT: [[NNAN:%.*]] = call nnan float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FABSA:%.*]] = call float @llvm.fabs.f32(float [[NNAN]]) |
| ; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float -0.000000e+00, float [[FABSA]]) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[MAX]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %nnan = call nnan float @llvm.sqrt.f32(float %a) |
| %fabsa = call float @llvm.fabs.f32(float %nnan) |
| %max = call float @llvm.maxnum.f32(float -0.0, float %fabsa) |
| %fabs = call float @llvm.fabs.f32(float %max) |
| ret float %fabs |
| } |
| |
| define float @maxnum_with_negzero_op_commute(float %a) { |
| ; CHECK-LABEL: @maxnum_with_negzero_op_commute( |
| ; CHECK-NEXT: [[NNAN:%.*]] = call nnan float @llvm.sqrt.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FABSA:%.*]] = call float @llvm.fabs.f32(float [[NNAN]]) |
| ; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[FABSA]], float -0.000000e+00) |
| ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[MAX]]) |
| ; CHECK-NEXT: ret float [[FABS]] |
| ; |
| %nnan = call nnan float @llvm.sqrt.f32(float %a) |
| %fabsa = call float @llvm.fabs.f32(float %nnan) |
| %max = call float @llvm.maxnum.f32(float %fabsa, float -0.0) |
| %fabs = call float @llvm.fabs.f32(float %max) |
| ret float %fabs |
| } |
| |
| ; If an operand is strictly greater than 0.0, we know the sign of the result of maxnum. |
| |
| define float @maxnum_with_pos_one_op(float %a) { |
| ; CHECK-LABEL: @maxnum_with_pos_one_op( |
| ; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[A:%.*]], float 1.000000e+00) |
| ; CHECK-NEXT: ret float [[MAX]] |
| ; |
| %max = call float @llvm.maxnum.f32(float %a, float 1.0) |
| %fabs = call float @llvm.fabs.f32(float %max) |
| ret float %fabs |
| } |