| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instcombine -S | FileCheck %s |
| |
| declare float @llvm.ldexp.f32.i32(float, i32) |
| declare <2 x float> @llvm.ldexp.v2f32.v2i32(<2 x float>, <2 x i32>) |
| declare void @use(float) |
| |
| define float @fneg_fneg(float %a) { |
| ; |
| ; CHECK-LABEL: @fneg_fneg( |
| ; CHECK-NEXT: ret float [[A:%.*]] |
| ; |
| %f = fneg float %a |
| %r = fneg float %f |
| ret float %r |
| } |
| |
| ; -(X * C) --> X * (-C) |
| |
| define float @fmul_fsub(float %x) { |
| ; CHECK-LABEL: @fmul_fsub( |
| ; CHECK-NEXT: [[R:%.*]] = fmul float [[X:%.*]], -4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fsub float -0.0, %m |
| ret float %r |
| } |
| |
| define float @fmul_fneg(float %x) { |
| ; CHECK-LABEL: @fmul_fneg( |
| ; CHECK-NEXT: [[R:%.*]] = fmul float [[X:%.*]], -4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fneg float %m |
| ret float %r |
| } |
| |
| ; Fast math is not required, but it should be propagated. |
| |
| define float @fmul_fsub_fmf(float %x) { |
| ; CHECK-LABEL: @fmul_fsub_fmf( |
| ; CHECK-NEXT: [[R:%.*]] = fmul reassoc nsz float [[X:%.*]], -4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fsub reassoc nsz float -0.0, %m |
| ret float %r |
| } |
| |
| define float @fmul_fneg_fmf(float %x) { |
| ; CHECK-LABEL: @fmul_fneg_fmf( |
| ; CHECK-NEXT: [[R:%.*]] = fmul reassoc nsz float [[X:%.*]], -4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fneg reassoc nsz float %m |
| ret float %r |
| } |
| |
| ; Extra use prevents the fold. We don't want to replace the fneg with an fmul. |
| |
| define float @fmul_fsub_extra_use(float %x) { |
| ; CHECK-LABEL: @fmul_fsub_extra_use( |
| ; CHECK-NEXT: [[M:%.*]] = fmul float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[M]] |
| ; CHECK-NEXT: call void @use(float [[M]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fsub float -0.0, %m |
| call void @use(float %m) |
| ret float %r |
| } |
| |
| define float @fmul_fneg_extra_use(float %x) { |
| ; CHECK-LABEL: @fmul_fneg_extra_use( |
| ; CHECK-NEXT: [[M:%.*]] = fmul float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[M]] |
| ; CHECK-NEXT: call void @use(float [[M]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %m = fmul float %x, 42.0 |
| %r = fneg float %m |
| call void @use(float %m) |
| ret float %r |
| } |
| |
| ; Try a vector. Use special constants (NaN, INF, undef) because they don't change anything. |
| |
| define <4 x double> @fmul_fsub_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fmul_fsub_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fmul <4 x double> [[X:%.*]], <double -4.200000e+01, double 0xFFF8000000000000, double 0xFFF0000000000000, double undef> |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %m = fmul <4 x double> %x, <double 42.0, double 0x7FF8000000000000, double 0x7FF0000000000000, double undef> |
| %r = fsub <4 x double> <double -0.0, double -0.0, double -0.0, double -0.0>, %m |
| ret <4 x double> %r |
| } |
| |
| define <4 x double> @fmul_fneg_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fmul_fneg_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fmul <4 x double> [[X:%.*]], <double -4.200000e+01, double 0xFFF8000000000000, double 0xFFF0000000000000, double undef> |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %m = fmul <4 x double> %x, <double 42.0, double 0x7FF8000000000000, double 0x7FF0000000000000, double undef> |
| %r = fneg <4 x double> %m |
| ret <4 x double> %r |
| } |
| |
| ; -(X / C) --> X / (-C) |
| |
| define float @fdiv_op1_constant_fsub(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fsub( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, -42.0 |
| %r = fsub float -0.0, %d |
| ret float %r |
| } |
| |
| define float @fdiv_op1_constant_fneg(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fneg( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, -42.0 |
| %r = fneg float %d |
| ret float %r |
| } |
| |
| ; Fast math is not required, but it should be propagated. |
| |
| define float @fdiv_op1_constant_fsub_fmf(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fsub_fmf( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv nnan float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, -42.0 |
| %r = fsub nnan float -0.0, %d |
| ret float %r |
| } |
| |
| define float @fdiv_op1_constant_fneg_fmf(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fneg_fmf( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv nnan float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, -42.0 |
| %r = fneg nnan float %d |
| ret float %r |
| } |
| |
| ; Extra use prevents the fold. We don't want to replace the fneg with an fdiv. |
| |
| define float @fdiv_op1_constant_fsub_extra_use(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fsub_extra_use( |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[D]] |
| ; CHECK-NEXT: call void @use(float [[D]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, 42.0 |
| %r = fsub float -0.0, %d |
| call void @use(float %d) |
| ret float %r |
| } |
| |
| define float @fdiv_op1_constant_fneg_extra_use(float %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fneg_extra_use( |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[D]] |
| ; CHECK-NEXT: call void @use(float [[D]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float %x, 42.0 |
| %r = fneg float %d |
| call void @use(float %d) |
| ret float %r |
| } |
| |
| ; Try a vector. Use special constants (NaN, INF, undef) because they don't change anything. |
| |
| define <4 x double> @fdiv_op1_constant_fsub_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fsub_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv <4 x double> [[X:%.*]], <double 4.200000e+01, double 0x7FF800000ABCD000, double 0x7FF0000000000000, double undef> |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %d = fdiv <4 x double> %x, <double -42.0, double 0xFFF800000ABCD000, double 0xFFF0000000000000, double undef> |
| %r = fsub <4 x double> <double -0.0, double -0.0, double -0.0, double -0.0>, %d |
| ret <4 x double> %r |
| } |
| |
| define <4 x double> @fdiv_op1_constant_fneg_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fdiv_op1_constant_fneg_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv <4 x double> [[X:%.*]], <double 4.200000e+01, double 0x7FF800000ABCD000, double 0x7FF0000000000000, double undef> |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %d = fdiv <4 x double> %x, <double -42.0, double 0xFFF800000ABCD000, double 0xFFF0000000000000, double undef> |
| %r = fneg <4 x double> %d |
| ret <4 x double> %r |
| } |
| |
| ; -(C / X) --> (-C) / X |
| |
| define float @fdiv_op0_constant_fsub(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fsub( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fsub float -0.0, %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fneg float %d |
| ret float %r |
| } |
| |
| ; Fast math is not required, but it should be propagated. |
| |
| define float @fdiv_op0_constant_fneg_fast_fast(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_fast_fast( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv fast float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv fast float 42.0, %x |
| %r = fneg fast float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_fast(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_fast( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv reassoc nnan arcp contract afn float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fneg fast float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_nsz_nsz(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_nsz_nsz( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv nsz float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv nsz float 42.0, %x |
| %r = fneg nsz float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_nsz(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_nsz( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fneg nsz float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_ninf_ninf(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_ninf_ninf( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv ninf float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv ninf float 42.0, %x |
| %r = fneg ninf float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_ninf(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_ninf( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fneg ninf float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_nnan_nnan(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_nnan_nnan( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv nnan float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv nnan float 42.0, %x |
| %r = fneg nnan float %d |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_nnan(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_nnan( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv nnan float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float 42.0, %x |
| %r = fneg nnan float %d |
| ret float %r |
| } |
| |
| ; Extra use prevents the fold. We don't want to replace the fneg with an fdiv. |
| |
| define float @fdiv_op0_constant_fsub_extra_use(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fsub_extra_use( |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[D]] |
| ; CHECK-NEXT: call void @use(float [[D]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float -42.0, %x |
| %r = fsub float -0.0, %d |
| call void @use(float %d) |
| ret float %r |
| } |
| |
| define float @fdiv_op0_constant_fneg_extra_use(float %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_extra_use( |
| ; CHECK-NEXT: [[D:%.*]] = fdiv float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[D]] |
| ; CHECK-NEXT: call void @use(float [[D]]) |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %d = fdiv float -42.0, %x |
| %r = fneg float %d |
| call void @use(float %d) |
| ret float %r |
| } |
| |
| ; Try a vector. Use special constants (NaN, INF, undef) because they don't change anything. |
| |
| define <4 x double> @fdiv_op0_constant_fsub_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fsub_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv <4 x double> <double 4.200000e+01, double 0xFFF8000000000000, double 0x7FF0000000000000, double undef>, [[X:%.*]] |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %d = fdiv <4 x double> <double -42.0, double 0x7FF8000000000000, double 0xFFF0000000000000, double undef>, %x |
| %r = fsub <4 x double> <double -0.0, double -0.0, double -0.0, double -0.0>, %d |
| ret <4 x double> %r |
| } |
| |
| define <4 x double> @fdiv_op0_constant_fneg_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fdiv_op0_constant_fneg_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fdiv <4 x double> <double 4.200000e+01, double 0xFFF8000000000000, double 0x7FF0000000000000, double undef>, [[X:%.*]] |
| ; CHECK-NEXT: ret <4 x double> [[R]] |
| ; |
| %d = fdiv <4 x double> <double -42.0, double 0x7FF8000000000000, double 0xFFF0000000000000, double undef>, %x |
| %r = fneg <4 x double> %d |
| ret <4 x double> %r |
| } |
| |
| ; Sink FP negation through a select: |
| ; c ? -x : -y --> -(c ? x : y) |
| |
| define <2 x double> @fneg_fneg_sel(<2 x double> %x, <2 x double> %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel( |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select i1 [[COND:%.*]], <2 x double> [[X:%.*]], <2 x double> [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg <2 x double> [[SEL_V]] |
| ; CHECK-NEXT: ret <2 x double> [[SEL]] |
| ; |
| %n1 = fneg <2 x double> %x |
| %n2 = fneg <2 x double> %y |
| %sel = select i1 %cond, <2 x double> %n1, <2 x double> %n2 |
| ret <2 x double> %sel |
| } |
| |
| ; An extra use is allowed. |
| |
| define float @fneg_fneg_sel_extra_use1(float %x, float %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_extra_use1( |
| ; CHECK-NEXT: [[N1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: call void @use(float [[N1]]) |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select i1 [[COND:%.*]], float [[X]], float [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg float [[SEL_V]] |
| ; CHECK-NEXT: ret float [[SEL]] |
| ; |
| %n1 = fneg float %x |
| call void @use(float %n1) |
| %n2 = fneg float %y |
| %sel = select i1 %cond, float %n1, float %n2 |
| ret float %sel |
| } |
| |
| define float @fneg_fneg_sel_extra_use2(float %x, float %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_extra_use2( |
| ; CHECK-NEXT: [[N2:%.*]] = fneg float [[Y:%.*]] |
| ; CHECK-NEXT: call void @use(float [[N2]]) |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select i1 [[COND:%.*]], float [[X:%.*]], float [[Y]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg float [[SEL_V]] |
| ; CHECK-NEXT: ret float [[SEL]] |
| ; |
| %n1 = fneg float %x |
| %n2 = fneg float %y |
| call void @use(float %n2) |
| %sel = select i1 %cond, float %n1, float %n2 |
| ret float %sel |
| } |
| |
| ; Legacy form of fneg should work too. |
| |
| define float @fsub_fsub_sel_extra_use1(float %x, float %y, i1 %cond) { |
| ; CHECK-LABEL: @fsub_fsub_sel_extra_use1( |
| ; CHECK-NEXT: [[N1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: call void @use(float [[N1]]) |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select i1 [[COND:%.*]], float [[X]], float [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg float [[SEL_V]] |
| ; CHECK-NEXT: ret float [[SEL]] |
| ; |
| %n1 = fsub float -0.0, %x |
| call void @use(float %n1) |
| %n2 = fsub float -0.0, %y |
| %sel = select i1 %cond, float %n1, float %n2 |
| ret float %sel |
| } |
| |
| ; Negative test: but 2 extra uses would require an extra instruction. |
| |
| define float @fneg_fneg_sel_extra_use3(float %x, float %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_extra_use3( |
| ; CHECK-NEXT: [[N1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: call void @use(float [[N1]]) |
| ; CHECK-NEXT: [[N2:%.*]] = fneg float [[Y:%.*]] |
| ; CHECK-NEXT: call void @use(float [[N2]]) |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], float [[N1]], float [[N2]] |
| ; CHECK-NEXT: ret float [[SEL]] |
| ; |
| %n1 = fneg float %x |
| call void @use(float %n1) |
| %n2 = fneg float %y |
| call void @use(float %n2) |
| %sel = select i1 %cond, float %n1, float %n2 |
| ret float %sel |
| } |
| |
| define double @fneg_fneg_sel_fmf1(double %x, double %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_fmf1( |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select i1 [[COND:%.*]], double [[X:%.*]], double [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg double [[SEL_V]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %n1 = fneg nnan double %x |
| %n2 = fneg ninf double %y |
| %sel = select i1 %cond, double %n1, double %n2 |
| ret double %sel |
| } |
| |
| define double @fneg_fneg_sel_fmf2(double %x, double %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_fmf2( |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select ninf i1 [[COND:%.*]], double [[X:%.*]], double [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg ninf double [[SEL_V]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %n1 = fneg nnan ninf double %x |
| %n2 = fneg ninf double %y |
| %sel = select i1 %cond, double %n1, double %n2 |
| ret double %sel |
| } |
| |
| define double @fneg_fneg_sel_fmf3(double %x, double %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_fmf3( |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select ninf i1 [[COND:%.*]], double [[X:%.*]], double [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg ninf double [[SEL_V]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %n1 = fneg nnan ninf double %x |
| %n2 = fneg ninf double %y |
| %sel = select ninf i1 %cond, double %n1, double %n2 |
| ret double %sel |
| } |
| |
| define double @fneg_fneg_sel_fmf4(double %x, double %y, i1 %cond) { |
| ; CHECK-LABEL: @fneg_fneg_sel_fmf4( |
| ; CHECK-NEXT: [[SEL_V:%.*]] = select nnan ninf nsz i1 [[COND:%.*]], double [[X:%.*]], double [[Y:%.*]] |
| ; CHECK-NEXT: [[SEL:%.*]] = fneg nnan ninf nsz double [[SEL_V]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %n1 = fneg nnan double %x |
| %n2 = fneg ninf double %y |
| %sel = select nsz nnan ninf i1 %cond, double %n1, double %n2 |
| ret double %sel |
| } |
| |
| ; Negative test |
| |
| define float @fneg_fadd_constant(float %x) { |
| ; CHECK-LABEL: @fneg_fadd_constant( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| %r = fneg float %a |
| ret float %r |
| } |
| |
| ; Negative test |
| |
| define float @fake_nsz_fadd_constant(float %x) { |
| ; CHECK-LABEL: @fake_nsz_fadd_constant( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| %r = fsub float -0.0, %a |
| ret float %r |
| } |
| |
| ; -(X + C) --> -C - X |
| |
| define float @fneg_nsz_fadd_constant(float %x) { |
| ; CHECK-LABEL: @fneg_nsz_fadd_constant( |
| ; CHECK-NEXT: [[R:%.*]] = fsub nsz float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| %r = fneg nsz float %a |
| ret float %r |
| } |
| |
| ; -(X + C) --> -C - X |
| |
| define float @fake_fneg_nsz_fadd_constant(float %x) { |
| ; CHECK-LABEL: @fake_fneg_nsz_fadd_constant( |
| ; CHECK-NEXT: [[R:%.*]] = fsub fast float -4.200000e+01, [[X:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| %r = fsub fast float -0.0, %a |
| ret float %r |
| } |
| |
| ; Negative test |
| |
| define float @fneg_nsz_fadd_constant_extra_use(float %x) { |
| ; CHECK-LABEL: @fneg_nsz_fadd_constant_extra_use( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: call void @use(float [[A]]) |
| ; CHECK-NEXT: [[R:%.*]] = fneg nsz float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| call void @use(float %a) |
| %r = fneg nsz float %a |
| ret float %r |
| } |
| |
| ; Negative test |
| |
| define float @fake_fneg_nsz_fadd_constant_extra_use(float %x) { |
| ; CHECK-LABEL: @fake_fneg_nsz_fadd_constant_extra_use( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01 |
| ; CHECK-NEXT: call void @use(float [[A]]) |
| ; CHECK-NEXT: [[R:%.*]] = fneg fast float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, 42.0 |
| call void @use(float %a) |
| %r = fsub fast float -0.0, %a |
| ret float %r |
| } |
| |
| ; -(X + C) --> -C - X |
| |
| define <2 x float> @fneg_nsz_fadd_constant_vec(<2 x float> %x) { |
| ; CHECK-LABEL: @fneg_nsz_fadd_constant_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fsub reassoc nnan nsz <2 x float> <float -4.200000e+01, float -4.300000e+01>, [[X:%.*]] |
| ; CHECK-NEXT: ret <2 x float> [[R]] |
| ; |
| %a = fadd <2 x float> %x, <float 42.0, float 43.0> |
| %r = fneg nsz nnan reassoc <2 x float> %a |
| ret <2 x float> %r |
| } |
| |
| ; -(X + C) --> -C - X |
| |
| define <2 x float> @fake_fneg_nsz_fadd_constant_vec(<2 x float> %x) { |
| ; CHECK-LABEL: @fake_fneg_nsz_fadd_constant_vec( |
| ; CHECK-NEXT: [[R:%.*]] = fsub nsz <2 x float> <float -4.200000e+01, float undef>, [[X:%.*]] |
| ; CHECK-NEXT: ret <2 x float> [[R]] |
| ; |
| %a = fadd <2 x float> %x, <float 42.0, float undef> |
| %r = fsub nsz <2 x float> <float undef, float -0.0>, %a |
| ret <2 x float> %r |
| } |
| |
| @g = external global i16, align 1 |
| |
| define float @fneg_nsz_fadd_constant_expr(float %x) { |
| ; CHECK-LABEL: @fneg_nsz_fadd_constant_expr( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], bitcast (i32 ptrtoint (ptr @g to i32) to float) |
| ; CHECK-NEXT: [[R:%.*]] = fneg nsz float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, bitcast (i32 ptrtoint (ptr @g to i32) to float) |
| %r = fneg nsz float %a |
| ret float %r |
| } |
| |
| define float @fake_fneg_nsz_fadd_constant_expr(float %x) { |
| ; CHECK-LABEL: @fake_fneg_nsz_fadd_constant_expr( |
| ; CHECK-NEXT: [[A:%.*]] = fadd float [[X:%.*]], bitcast (i32 ptrtoint (ptr @g to i32) to float) |
| ; CHECK-NEXT: [[R:%.*]] = fneg nsz float [[A]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %a = fadd float %x, bitcast (i32 ptrtoint (ptr @g to i32) to float) |
| %r = fsub nsz float -0.0, %a |
| ret float %r |
| } |
| |
| define float @select_fneg_true(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_true( |
| ; CHECK-NEXT: [[Y_NEG:%.*]] = fneg float [[Y:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select i1 [[B:%.*]], float [[X:%.*]], float [[Y_NEG]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %nx = fneg float %x |
| %s = select i1 %b, float %nx, float %y |
| %r = fneg float %s |
| ret float %r |
| } |
| |
| define <2 x float> @select_fneg_false(<2 x float> %x, <2 x float> %y, <2 x i1> %b) { |
| ; CHECK-LABEL: @select_fneg_false( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan nsz <2 x float> [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf <2 x i1> [[B:%.*]], <2 x float> [[X_NEG]], <2 x float> [[Y:%.*]] |
| ; CHECK-NEXT: ret <2 x float> [[R]] |
| ; |
| %ny = fneg nnan <2 x float> %y |
| %s = select ninf <2 x i1> %b, <2 x float> %x, <2 x float> %ny |
| %r = fneg nsz nnan <2 x float> %s |
| ret <2 x float> %r |
| } |
| |
| define float @select_fneg_false_no_nsz(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_false_no_nsz( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan ninf nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf i1 [[B:%.*]], float [[X_NEG]], float [[Y:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %ny = fneg float %y |
| %s = select i1 %b, float %x, float %ny |
| %r = fneg ninf nnan nsz float %s |
| ret float %r |
| } |
| |
| ; The removal of nsz in this pattern is not needed if the select condition can't be poison. |
| |
| define float @select_fneg_false_nsz_ok(float %x, float %y, i1 noundef %b) { |
| ; CHECK-LABEL: @select_fneg_false_nsz_ok( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan ninf nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf nsz i1 [[B:%.*]], float [[X_NEG]], float [[Y:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %ny = fneg float %y |
| %s = select i1 %b, float %x, float %ny |
| %r = fneg nsz ninf nnan float %s |
| ret float %r |
| } |
| |
| define float @select_fneg_false_nsz(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_false_nsz( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan ninf nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf nsz i1 [[B:%.*]], float [[X_NEG]], float [[Y:%.*]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %ny = fneg float %y |
| %s = select nsz i1 %b, float %x, float %ny |
| %r = fneg ninf nnan nsz float %s |
| ret float %r |
| } |
| |
| ; Special-case for propagating nsz: it's ok when selecting between an operand and its negation. |
| |
| define float @select_common_op_fneg_true(float %x, i1 %b) { |
| ; CHECK-LABEL: @select_common_op_fneg_true( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan ninf nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf nsz i1 [[B:%.*]], float [[X_NEG]], float [[X]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %nx = fneg float %x |
| %s = select i1 %b, float %x, float %nx |
| %r = fneg nsz ninf nnan float %s |
| ret float %r |
| } |
| |
| define float @select_common_op_fneg_false(float %x, i1 %b) { |
| ; CHECK-LABEL: @select_common_op_fneg_false( |
| ; CHECK-NEXT: [[X_NEG:%.*]] = fneg nnan ninf nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select nnan ninf nsz i1 [[B:%.*]], float [[X_NEG]], float [[X]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %nx = fneg float %x |
| %s = select i1 %b, float %x, float %nx |
| %r = fneg nsz ninf nnan float %s |
| ret float %r |
| } |
| |
| ; The transform above allows follow-on folds to convert to fabs. |
| |
| define float @fabs(float %a) { |
| ; CHECK-LABEL: @fabs( |
| ; CHECK-NEXT: [[FNEG1:%.*]] = call nnan ninf nsz float @llvm.fabs.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: ret float [[FNEG1]] |
| ; |
| %fneg = fneg float %a |
| %cmp = fcmp ogt float %a, %fneg |
| %sel = select i1 %cmp, float %fneg, float %a |
| %fneg1 = fneg nnan ninf nsz float %sel |
| ret float %fneg1 |
| } |
| |
| define float @fnabs(float %a) { |
| ; CHECK-LABEL: @fnabs( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.fabs.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FNEG1:%.*]] = fneg fast float [[TMP1]] |
| ; CHECK-NEXT: ret float [[FNEG1]] |
| ; |
| %fneg = fneg float %a |
| %cmp = fcmp olt float %a, %fneg |
| %sel = select i1 %cmp, float %fneg, float %a |
| %fneg1 = fneg fast float %sel |
| ret float %fneg1 |
| } |
| |
| define float @fnabs_1(float %a) { |
| ; CHECK-LABEL: @fnabs_1( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.fabs.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FNEG1:%.*]] = fneg fast float [[TMP1]] |
| ; CHECK-NEXT: ret float [[FNEG1]] |
| ; |
| %fneg = fneg float %a |
| %cmp = fcmp ogt float %a, %fneg |
| %sel = select i1 %cmp, float %a, float %fneg |
| %fneg1 = fneg fast float %sel |
| ret float %fneg1 |
| } |
| |
| ; This is not fabs because that could produce a different signbit for a NAN input. |
| ; PR59279 |
| |
| define float @fnabs_2_nsz(float %a) { |
| ; CHECK-LABEL: @fnabs_2_nsz( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt float [[A:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[A_NEG:%.*]] = fneg float [[A]] |
| ; CHECK-NEXT: [[FNEG1:%.*]] = select nsz i1 [[CMP]], float [[A]], float [[A_NEG]] |
| ; CHECK-NEXT: ret float [[FNEG1]] |
| ; |
| %fneg = fneg float %a |
| %cmp = fcmp olt float %a, %fneg |
| %sel = select nsz i1 %cmp, float %fneg, float %a |
| %fneg1 = fneg float %sel |
| ret float %fneg1 |
| } |
| |
| define float @fnabs_2_nsz_nnan(float %a) { |
| ; CHECK-LABEL: @fnabs_2_nsz_nnan( |
| ; CHECK-NEXT: [[SEL:%.*]] = call nnan nsz float @llvm.fabs.f32(float [[A:%.*]]) |
| ; CHECK-NEXT: [[FNEG1:%.*]] = fneg float [[SEL]] |
| ; CHECK-NEXT: ret float [[FNEG1]] |
| ; |
| %fneg = fneg float %a |
| %cmp = fcmp olt float %a, %fneg |
| %sel = select nsz nnan i1 %cmp, float %fneg, float %a |
| %fneg1 = fneg float %sel |
| ret float %fneg1 |
| } |
| |
| define float @select_fneg_both(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_both( |
| ; CHECK-NEXT: [[S_V:%.*]] = select i1 [[B:%.*]], float [[X:%.*]], float [[Y:%.*]] |
| ; CHECK-NEXT: ret float [[S_V]] |
| ; |
| %nx = fneg float %x |
| %ny = fneg float %y |
| %s = select i1 %b, float %nx, float %ny |
| %r = fneg float %s |
| ret float %r |
| } |
| |
| define float @select_fneg_use1(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_use1( |
| ; CHECK-NEXT: [[NX:%.*]] = fneg ninf float [[X:%.*]] |
| ; CHECK-NEXT: call void @use(float [[NX]]) |
| ; CHECK-NEXT: [[Y_NEG:%.*]] = fneg float [[Y:%.*]] |
| ; CHECK-NEXT: [[R:%.*]] = select fast i1 [[B:%.*]], float [[X]], float [[Y_NEG]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %nx = fneg ninf float %x |
| call void @use(float %nx) |
| %s = select fast i1 %b, float %nx, float %y |
| %r = fneg float %s |
| ret float %r |
| } |
| |
| define float @select_fneg_use2(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_use2( |
| ; CHECK-NEXT: call void @use(float [[Y:%.*]]) |
| ; CHECK-NEXT: [[Y_NEG:%.*]] = fneg fast float [[Y]] |
| ; CHECK-NEXT: [[R:%.*]] = select reassoc nnan ninf arcp contract afn i1 [[B:%.*]], float [[X:%.*]], float [[Y_NEG]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| call void @use(float %y) |
| %nx = fneg nsz float %x |
| %s = select ninf i1 %b, float %nx, float %y |
| %r = fneg fast float %s |
| ret float %r |
| } |
| |
| ; Negative test |
| |
| define float @select_fneg_use3(float %x, float %y, i1 %b) { |
| ; CHECK-LABEL: @select_fneg_use3( |
| ; CHECK-NEXT: [[NX:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], float [[NX]], float [[Y:%.*]] |
| ; CHECK-NEXT: call void @use(float [[S]]) |
| ; CHECK-NEXT: [[R:%.*]] = fneg float [[S]] |
| ; CHECK-NEXT: ret float [[R]] |
| ; |
| %nx = fneg float %x |
| %s = select i1 %b, float %nx, float %y |
| call void @use(float %s) |
| %r = fneg float %s |
| ret float %r |
| } |
| |
| define float @fneg_ldexp(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg float %ldexp |
| ret float %neg |
| } |
| |
| define float @fsub_fneg_ldexp(float %x, i32 %n) { |
| ; CHECK-LABEL: @fsub_fneg_ldexp( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fsub float -0.0, %ldexp |
| ret float %neg |
| } |
| |
| define float @fsub_fneg_ldexp_nsz(float %x, i32 %n) { |
| ; CHECK-LABEL: @fsub_fneg_ldexp_nsz( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call nsz float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fsub nsz float -0.0, %ldexp |
| ret float %neg |
| } |
| |
| define float @fsub_fneg_ldexp_p0_nsz(float %x, i32 %n) { |
| ; CHECK-LABEL: @fsub_fneg_ldexp_p0_nsz( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg nsz float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call nsz float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fsub nsz float 0.0, %ldexp |
| ret float %neg |
| } |
| |
| define float @fsub_fneg_ldexp_p0(float %x, i32 %n) { |
| ; CHECK-LABEL: @fsub_fneg_ldexp_p0( |
| ; CHECK-NEXT: [[LDEXP:%.*]] = call float @llvm.ldexp.f32.i32(float [[X:%.*]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: [[NEG:%.*]] = fsub float 0.000000e+00, [[LDEXP]] |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fsub float 0.0, %ldexp |
| ret float %neg |
| } |
| |
| define <2 x float> @fneg_ldexp_vector(<2 x float> %x, <2 x i32> %n) { |
| ; CHECK-LABEL: @fneg_ldexp_vector( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg <2 x float> [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call <2 x float> @llvm.ldexp.v2f32.v2i32(<2 x float> [[TMP1]], <2 x i32> [[N:%.*]]) |
| ; CHECK-NEXT: ret <2 x float> [[NEG]] |
| ; |
| %ldexp = call <2 x float> @llvm.ldexp.v2f32.v2i32(<2 x float> %x, <2 x i32> %n) |
| %neg = fneg <2 x float> %ldexp |
| ret <2 x float> %neg |
| } |
| |
| define float @fneg_ldexp_multiuse(float %x, i32 %n, ptr %ptr) { |
| ; CHECK-LABEL: @fneg_ldexp_multiuse( |
| ; CHECK-NEXT: [[LDEXP:%.*]] = call float @llvm.ldexp.f32.i32(float [[X:%.*]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: store float [[LDEXP]], ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: [[NEG:%.*]] = fneg float [[LDEXP]] |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| store float %ldexp, ptr %ptr |
| %neg = fneg float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_fmf_ldexp(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_fmf_ldexp( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg nnan float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call nnan float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call nnan float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_fmf_neg(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_fmf_neg( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg nnan float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call nnan float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg nnan float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_fmf(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_fmf( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg nnan ninf float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call nnan ninf float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call ninf float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg nnan float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_contract0(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_contract0( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg contract float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call contract float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call contract float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_contract1(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_contract1( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg contract float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call contract float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg contract float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_contract(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_contract( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg contract float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call contract float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]) |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call contract float @llvm.ldexp.f32.i32(float %x, i32 %n) |
| %neg = fneg contract float %ldexp |
| ret float %neg |
| } |
| |
| define float @fneg_ldexp_metadata(float %x, i32 %n) { |
| ; CHECK-LABEL: @fneg_ldexp_metadata( |
| ; CHECK-NEXT: [[TMP1:%.*]] = fneg float [[X:%.*]] |
| ; CHECK-NEXT: [[NEG:%.*]] = call float @llvm.ldexp.f32.i32(float [[TMP1]], i32 [[N:%.*]]), !arst !0 |
| ; CHECK-NEXT: ret float [[NEG]] |
| ; |
| %ldexp = call float @llvm.ldexp.f32.i32(float %x, i32 %n), !arst !0 |
| %neg = fneg float %ldexp |
| ret float %neg |
| } |
| |
| !0 = !{} |