diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/fabs.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/fabs.ll | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/llvm/test/Transforms/InstCombine/fabs.ll b/llvm/test/Transforms/InstCombine/fabs.ll deleted file mode 100644 index 2dcdc52210a..00000000000 --- a/llvm/test/Transforms/InstCombine/fabs.ll +++ /dev/null @@ -1,420 +0,0 @@ -; NOTE: Assertions have been autogenerated by utils/update_test_checks.py -; RUN: opt -mtriple=x86_64-unknown-linux-gnu < %s -instcombine -S | FileCheck %s - -; Make sure libcalls are replaced with intrinsic calls. - -declare float @llvm.fabs.f32(float) -declare double @llvm.fabs.f64(double) -declare fp128 @llvm.fabs.f128(fp128) - -declare float @fabsf(float) -declare double @fabs(double) -declare fp128 @fabsl(fp128) -declare float @llvm.fma.f32(float, float, float) -declare float @llvm.fmuladd.f32(float, float, float) - -define float @replace_fabs_call_f32(float %x) { -; CHECK-LABEL: @replace_fabs_call_f32( -; CHECK-NEXT: [[FABSF:%.*]] = call float @llvm.fabs.f32(float [[X:%.*]]) -; CHECK-NEXT: ret float [[FABSF]] -; - %fabsf = tail call float @fabsf(float %x) - ret float %fabsf -} - -define double @replace_fabs_call_f64(double %x) { -; CHECK-LABEL: @replace_fabs_call_f64( -; CHECK-NEXT: [[FABS:%.*]] = call double @llvm.fabs.f64(double [[X:%.*]]) -; CHECK-NEXT: ret double [[FABS]] -; - %fabs = tail call double @fabs(double %x) - ret double %fabs -} - -define fp128 @replace_fabs_call_f128(fp128 %x) { -; CHECK-LABEL: @replace_fabs_call_f128( -; CHECK-NEXT: [[FABSL:%.*]] = call fp128 @llvm.fabs.f128(fp128 [[X:%.*]]) -; CHECK-NEXT: ret fp128 [[FABSL]] -; - %fabsl = tail call fp128 @fabsl(fp128 %x) - ret fp128 %fabsl -} - -; Make sure fast math flags are preserved when replacing the libcall. -define float @fmf_replace_fabs_call_f32(float %x) { -; CHECK-LABEL: @fmf_replace_fabs_call_f32( -; CHECK-NEXT: [[FABSF:%.*]] = call nnan float @llvm.fabs.f32(float [[X:%.*]]) -; CHECK-NEXT: ret float [[FABSF]] -; - %fabsf = tail call nnan float @fabsf(float %x) - ret float %fabsf -} - -; Make sure all intrinsic calls are eliminated when the input is known -; positive. - -; The fabs cannot be eliminated because %x may be a NaN - -define float @square_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_fabs_intrinsic_f32( -; CHECK-NEXT: [[MUL:%.*]] = fmul float [[X:%.*]], [[X]] -; CHECK-NEXT: [[FABSF:%.*]] = tail call float @llvm.fabs.f32(float [[MUL]]) -; CHECK-NEXT: ret float [[FABSF]] -; - %mul = fmul float %x, %x - %fabsf = tail call float @llvm.fabs.f32(float %mul) - ret float %fabsf -} - -define double @square_fabs_intrinsic_f64(double %x) { -; CHECK-LABEL: @square_fabs_intrinsic_f64( -; CHECK-NEXT: [[MUL:%.*]] = fmul double [[X:%.*]], [[X]] -; CHECK-NEXT: [[FABS:%.*]] = tail call double @llvm.fabs.f64(double [[MUL]]) -; CHECK-NEXT: ret double [[FABS]] -; - %mul = fmul double %x, %x - %fabs = tail call double @llvm.fabs.f64(double %mul) - ret double %fabs -} - -define fp128 @square_fabs_intrinsic_f128(fp128 %x) { -; CHECK-LABEL: @square_fabs_intrinsic_f128( -; CHECK-NEXT: [[MUL:%.*]] = fmul fp128 [[X:%.*]], [[X]] -; CHECK-NEXT: [[FABSL:%.*]] = tail call fp128 @llvm.fabs.f128(fp128 [[MUL]]) -; CHECK-NEXT: ret fp128 [[FABSL]] -; - %mul = fmul fp128 %x, %x - %fabsl = tail call fp128 @llvm.fabs.f128(fp128 %mul) - ret fp128 %fabsl -} - -define float @square_nnan_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_nnan_fabs_intrinsic_f32( -; CHECK-NEXT: [[MUL:%.*]] = fmul nnan float [[X:%.*]], [[X]] -; CHECK-NEXT: ret float [[MUL]] -; - %mul = fmul nnan float %x, %x - %fabsf = call float @llvm.fabs.f32(float %mul) - ret float %fabsf -} - -; Shrinking a library call to a smaller type should not be inhibited by nor inhibit the square optimization. - -define float @square_fabs_shrink_call1(float %x) { -; CHECK-LABEL: @square_fabs_shrink_call1( -; CHECK-NEXT: [[TMP1:%.*]] = fmul float [[X:%.*]], [[X]] -; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.fabs.f32(float [[TMP1]]) -; CHECK-NEXT: ret float [[TRUNC]] -; - %ext = fpext float %x to double - %sq = fmul double %ext, %ext - %fabs = call double @fabs(double %sq) - %trunc = fptrunc double %fabs to float - ret float %trunc -} - -define float @square_fabs_shrink_call2(float %x) { -; CHECK-LABEL: @square_fabs_shrink_call2( -; CHECK-NEXT: [[SQ:%.*]] = fmul float [[X:%.*]], [[X]] -; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.fabs.f32(float [[SQ]]) -; CHECK-NEXT: ret float [[TRUNC]] -; - %sq = fmul float %x, %x - %ext = fpext float %sq to double - %fabs = call double @fabs(double %ext) - %trunc = fptrunc double %fabs to float - ret float %trunc -} - -define float @fabs_select_constant_negative_positive(i32 %c) { -; CHECK-LABEL: @fabs_select_constant_negative_positive( -; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 -; CHECK-NEXT: [[FABS:%.*]] = select i1 [[CMP]], float 1.000000e+00, float 2.000000e+00 -; CHECK-NEXT: ret float [[FABS]] -; - %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 float @fabs_select_constant_positive_negative(i32 %c) { -; CHECK-LABEL: @fabs_select_constant_positive_negative( -; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 -; CHECK-NEXT: [[FABS:%.*]] = select i1 [[CMP]], float 1.000000e+00, float 2.000000e+00 -; CHECK-NEXT: ret float [[FABS]] -; - %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 float @fabs_select_constant_negative_negative(i32 %c) { -; CHECK-LABEL: @fabs_select_constant_negative_negative( -; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 -; CHECK-NEXT: [[FABS:%.*]] = select i1 [[CMP]], float 1.000000e+00, float 2.000000e+00 -; CHECK-NEXT: ret float [[FABS]] -; - %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 float @fabs_select_constant_neg0(i32 %c) { -; CHECK-LABEL: @fabs_select_constant_neg0( -; CHECK-NEXT: ret float 0.000000e+00 -; - %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 float @fabs_select_var_constant_negative(i32 %c, float %x) { -; CHECK-LABEL: @fabs_select_var_constant_negative( -; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0 -; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], float [[X:%.*]], 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 %x, float -1.0 - %fabs = call float @llvm.fabs.f32(float %select) - ret float %fabs -} - -; The fabs cannot be eliminated because %x may be a NaN - -define float @square_fma_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_fma_fabs_intrinsic_f32( -; CHECK-NEXT: [[FMA:%.*]] = call float @llvm.fma.f32(float [[X:%.*]], float [[X]], float 1.000000e+00) -; CHECK-NEXT: [[FABSF:%.*]] = call float @llvm.fabs.f32(float [[FMA]]) -; CHECK-NEXT: ret float [[FABSF]] -; - %fma = call float @llvm.fma.f32(float %x, float %x, float 1.0) - %fabsf = call float @llvm.fabs.f32(float %fma) - ret float %fabsf -} - -; The fabs cannot be eliminated because %x may be a NaN - -define float @square_nnan_fma_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_nnan_fma_fabs_intrinsic_f32( -; CHECK-NEXT: [[FMA:%.*]] = call nnan float @llvm.fma.f32(float [[X:%.*]], float [[X]], float 1.000000e+00) -; CHECK-NEXT: ret float [[FMA]] -; - %fma = call nnan float @llvm.fma.f32(float %x, float %x, float 1.0) - %fabsf = call float @llvm.fabs.f32(float %fma) - ret float %fabsf -} - -define float @square_fmuladd_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_fmuladd_fabs_intrinsic_f32( -; CHECK-NEXT: [[FMULADD:%.*]] = call float @llvm.fmuladd.f32(float [[X:%.*]], float [[X]], float 1.000000e+00) -; CHECK-NEXT: [[FABSF:%.*]] = call float @llvm.fabs.f32(float [[FMULADD]]) -; CHECK-NEXT: ret float [[FABSF]] -; - %fmuladd = call float @llvm.fmuladd.f32(float %x, float %x, float 1.0) - %fabsf = call float @llvm.fabs.f32(float %fmuladd) - ret float %fabsf -} - -define float @square_nnan_fmuladd_fabs_intrinsic_f32(float %x) { -; CHECK-LABEL: @square_nnan_fmuladd_fabs_intrinsic_f32( -; CHECK-NEXT: [[FMULADD:%.*]] = call nnan float @llvm.fmuladd.f32(float [[X:%.*]], float [[X]], float 1.000000e+00) -; CHECK-NEXT: ret float [[FMULADD]] -; - %fmuladd = call nnan float @llvm.fmuladd.f32(float %x, float %x, float 1.0) - %fabsf = call float @llvm.fabs.f32(float %fmuladd) - ret float %fabsf -} - -; Don't introduce a second fpext - -define double @multi_use_fabs_fpext(float %x) { -; CHECK-LABEL: @multi_use_fabs_fpext( -; CHECK-NEXT: [[FPEXT:%.*]] = fpext float [[X:%.*]] to double -; CHECK-NEXT: [[FABS:%.*]] = call double @llvm.fabs.f64(double [[FPEXT]]) -; CHECK-NEXT: store volatile double [[FPEXT]], double* undef, align 8 -; CHECK-NEXT: ret double [[FABS]] -; - %fpext = fpext float %x to double - %fabs = call double @llvm.fabs.f64(double %fpext) - store volatile double %fpext, double* undef - ret double %fabs -} - -; Negative test for the fabs folds below: we require nnan, so -; we won't always clear the sign bit of a NaN value. - -define double @select_fcmp_ole_zero(double %x) { -; CHECK-LABEL: @select_fcmp_ole_zero( -; CHECK-NEXT: [[LEZERO:%.*]] = fcmp ole double [[X:%.*]], 0.000000e+00 -; CHECK-NEXT: [[NEGX:%.*]] = fsub double 0.000000e+00, [[X]] -; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LEZERO]], double [[NEGX]], double [[X]] -; CHECK-NEXT: ret double [[FABS]] -; - %lezero = fcmp ole double %x, 0.0 - %negx = fsub double 0.0, %x - %fabs = select i1 %lezero, double %negx, double %x - ret double %fabs -} - -; X <= 0.0 ? (0.0 - X) : X --> fabs(X) - -define double @select_fcmp_nnan_ole_zero(double %x) { -; CHECK-LABEL: @select_fcmp_nnan_ole_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan double @llvm.fabs.f64(double [[X:%.*]]) -; CHECK-NEXT: ret double [[TMP1]] -; - %lezero = fcmp nnan ole double %x, 0.0 - %negx = fsub double 0.0, %x - %fabs = select i1 %lezero, double %negx, double %x - ret double %fabs -} - -; X <= -0.0 ? (0.0 - X) : X --> fabs(X) - -define <2 x float> @select_fcmp_nnan_ole_negzero(<2 x float> %x) { -; CHECK-LABEL: @select_fcmp_nnan_ole_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan <2 x float> @llvm.fabs.v2f32(<2 x float> [[X:%.*]]) -; CHECK-NEXT: ret <2 x float> [[TMP1]] -; - %lezero = fcmp nnan ole <2 x float> %x, <float -0.0, float -0.0> - %negx = fsub <2 x float> <float 0.0, float undef>, %x - %fabs = select <2 x i1> %lezero, <2 x float> %negx, <2 x float> %x - ret <2 x float> %fabs -} - -; X > 0.0 ? X : (0.0 - X) --> fabs(X) - -define fp128 @select_fcmp_nnan_ogt_zero(fp128 %x) { -; CHECK-LABEL: @select_fcmp_nnan_ogt_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan fp128 @llvm.fabs.f128(fp128 [[X:%.*]]) -; CHECK-NEXT: ret fp128 [[TMP1]] -; - %gtzero = fcmp nnan ogt fp128 %x, zeroinitializer - %negx = fsub fp128 zeroinitializer, %x - %fabs = select i1 %gtzero, fp128 %x, fp128 %negx - ret fp128 %fabs -} - -; X > -0.0 ? X : (0.0 - X) --> fabs(X) - -define half @select_fcmp_nnan_ogt_negzero(half %x) { -; CHECK-LABEL: @select_fcmp_nnan_ogt_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan half @llvm.fabs.f16(half [[X:%.*]]) -; CHECK-NEXT: ret half [[TMP1]] -; - %gtzero = fcmp nnan ogt half %x, -0.0 - %negx = fsub half 0.0, %x - %fabs = select i1 %gtzero, half %x, half %negx - ret half %fabs -} - -; X < 0.0 ? -X : X --> fabs(X) - -define double @select_fcmp_nnan_nsz_olt_zero(double %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_olt_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz double @llvm.fabs.f64(double [[X:%.*]]) -; CHECK-NEXT: ret double [[TMP1]] -; - %ltzero = fcmp nnan nsz olt double %x, 0.0 - %negx = fsub double -0.0, %x - %fabs = select i1 %ltzero, double %negx, double %x - ret double %fabs -} - -; X < -0.0 ? -X : X --> fabs(X) - -define float @select_fcmp_nnan_nsz_olt_negzero(float %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_olt_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf nsz float @llvm.fabs.f32(float [[X:%.*]]) -; CHECK-NEXT: ret float [[TMP1]] -; - %ltzero = fcmp nnan nsz ninf olt float %x, -0.0 - %negx = fsub float -0.0, %x - %fabs = select i1 %ltzero, float %negx, float %x - ret float %fabs -} - -; X <= 0.0 ? -X : X --> fabs(X) - -define double @select_fcmp_nnan_nsz_ole_zero(double %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_ole_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call fast double @llvm.fabs.f64(double [[X:%.*]]) -; CHECK-NEXT: ret double [[TMP1]] -; - %lezero = fcmp fast ole double %x, 0.0 - %negx = fsub double -0.0, %x - %fabs = select i1 %lezero, double %negx, double %x - ret double %fabs -} - -; X <= -0.0 ? -X : X --> fabs(X) - -define float @select_fcmp_nnan_nsz_ole_negzero(float %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_ole_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz float @llvm.fabs.f32(float [[X:%.*]]) -; CHECK-NEXT: ret float [[TMP1]] -; - %lezero = fcmp nnan nsz ole float %x, -0.0 - %negx = fsub float -0.0, %x - %fabs = select i1 %lezero, float %negx, float %x - ret float %fabs -} - -; X > 0.0 ? X : (0.0 - X) --> fabs(X) - -define <2 x float> @select_fcmp_nnan_nsz_ogt_zero(<2 x float> %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_ogt_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz arcp <2 x float> @llvm.fabs.v2f32(<2 x float> [[X:%.*]]) -; CHECK-NEXT: ret <2 x float> [[TMP1]] -; - %gtzero = fcmp nnan nsz arcp ogt <2 x float> %x, zeroinitializer - %negx = fsub <2 x float> <float -0.0, float -0.0>, %x - %fabs = select <2 x i1> %gtzero, <2 x float> %x, <2 x float> %negx - ret <2 x float> %fabs -} - -; X > -0.0 ? X : (0.0 - X) --> fabs(X) - -define half @select_fcmp_nnan_nsz_ogt_negzero(half %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_ogt_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call fast half @llvm.fabs.f16(half [[X:%.*]]) -; CHECK-NEXT: ret half [[TMP1]] -; - %gtzero = fcmp fast ogt half %x, -0.0 - %negx = fsub half 0.0, %x - %fabs = select i1 %gtzero, half %x, half %negx - ret half %fabs -} - -; X > 0.0 ? X : (0.0 - X) --> fabs(X) - -define <2 x double> @select_fcmp_nnan_nsz_oge_zero(<2 x double> %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_oge_zero( -; CHECK-NEXT: [[TMP1:%.*]] = call reassoc nnan nsz <2 x double> @llvm.fabs.v2f64(<2 x double> [[X:%.*]]) -; CHECK-NEXT: ret <2 x double> [[TMP1]] -; - %gezero = fcmp nnan nsz reassoc oge <2 x double> %x, zeroinitializer - %negx = fsub <2 x double> <double -0.0, double -0.0>, %x - %fabs = select <2 x i1> %gezero, <2 x double> %x, <2 x double> %negx - ret <2 x double> %fabs -} - -; X > -0.0 ? X : (0.0 - X) --> fabs(X) - -define half @select_fcmp_nnan_nsz_oge_negzero(half %x) { -; CHECK-LABEL: @select_fcmp_nnan_nsz_oge_negzero( -; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz half @llvm.fabs.f16(half [[X:%.*]]) -; CHECK-NEXT: ret half [[TMP1]] -; - %gezero = fcmp nnan nsz oge half %x, -0.0 - %negx = fsub half -0.0, %x - %fabs = select i1 %gezero, half %x, half %negx - ret half %fabs -} - |
