From ae7d255f657fbc941949cda52784b16a40b42e0d Mon Sep 17 00:00:00 2001 From: Sanjay Patel Date: Mon, 10 Jun 2019 14:04:10 +0000 Subject: [PATCH] [InstCombine] add tests for fcmp unordered pred -> fabs (PR42179); NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362936 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/InstCombine/fabs.ll | 225 ++++++++++++++++++++++++++++ 1 file changed, 225 insertions(+) diff --git a/test/Transforms/InstCombine/fabs.ll b/test/Transforms/InstCombine/fabs.ll index 9962c02d137..e60bbedd500 100644 --- a/test/Transforms/InstCombine/fabs.ll +++ b/test/Transforms/InstCombine/fabs.ll @@ -327,6 +327,21 @@ define double @select_fcmp_nnan_nsz_olt_zero(double %x) { ret double %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define double @select_fcmp_nnan_nsz_ult_zero(double %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ult_zero( +; CHECK-NEXT: [[LTZERO:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fsub nnan nsz double -0.000000e+00, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LTZERO]], double [[NEGX]], double [[X]] +; CHECK-NEXT: ret double [[FABS]] +; + %ltzero = fcmp ult double %x, 0.0 + %negx = fsub nnan nsz double -0.0, %x + %fabs = select i1 %ltzero, double %negx, double %x + ret double %fabs +} + define double @select_fcmp_nnan_nsz_olt_zero_unary_fneg(double %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_olt_zero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz double @llvm.fabs.f64(double [[X:%.*]]) @@ -338,6 +353,21 @@ define double @select_fcmp_nnan_nsz_olt_zero_unary_fneg(double %x) { ret double %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define double @select_fcmp_nnan_nsz_ult_zero_unary_fneg(double %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ult_zero_unary_fneg( +; CHECK-NEXT: [[LTZERO:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fneg nnan nsz double [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LTZERO]], double [[NEGX]], double [[X]] +; CHECK-NEXT: ret double [[FABS]] +; + %ltzero = fcmp ult double %x, 0.0 + %negx = fneg nnan nsz double %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) { @@ -351,6 +381,21 @@ define float @select_fcmp_nnan_nsz_olt_negzero(float %x) { ret float %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define float @select_fcmp_nnan_nsz_ult_negzero(float %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ult_negzero( +; CHECK-NEXT: [[LTZERO:%.*]] = fcmp ult float [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fsub nnan ninf nsz float -0.000000e+00, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LTZERO]], float [[NEGX]], float [[X]] +; CHECK-NEXT: ret float [[FABS]] +; + %ltzero = fcmp ult float %x, -0.0 + %negx = fsub nnan ninf nsz float -0.0, %x + %fabs = select i1 %ltzero, float %negx, float %x + ret float %fabs +} + define float @select_fcmp_nnan_nsz_olt_negzero_unary_fneg(float %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_olt_negzero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf nsz float @llvm.fabs.f32(float [[X:%.*]]) @@ -362,6 +407,21 @@ define float @select_fcmp_nnan_nsz_olt_negzero_unary_fneg(float %x) { ret float %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define float @select_fcmp_nnan_nsz_ult_negzero_unary_fneg(float %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ult_negzero_unary_fneg( +; CHECK-NEXT: [[LTZERO:%.*]] = fcmp ult float [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fneg nnan ninf nsz float [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LTZERO]], float [[NEGX]], float [[X]] +; CHECK-NEXT: ret float [[FABS]] +; + %ltzero = fcmp ult float %x, -0.0 + %negx = fneg nnan ninf nsz float %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) { @@ -375,6 +435,21 @@ define double @select_fcmp_nnan_nsz_ole_zero(double %x) { ret double %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define double @select_fcmp_nnan_nsz_ule_zero(double %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ule_zero( +; CHECK-NEXT: [[LEZERO:%.*]] = fcmp ule double [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fsub fast double -0.000000e+00, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LEZERO]], double [[NEGX]], double [[X]] +; CHECK-NEXT: ret double [[FABS]] +; + %lezero = fcmp ule double %x, 0.0 + %negx = fsub fast double -0.0, %x + %fabs = select i1 %lezero, double %negx, double %x + ret double %fabs +} + define double @select_fcmp_nnan_nsz_ole_zero_unary_fneg(double %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_ole_zero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call fast double @llvm.fabs.f64(double [[X:%.*]]) @@ -386,6 +461,21 @@ define double @select_fcmp_nnan_nsz_ole_zero_unary_fneg(double %x) { ret double %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define double @select_fcmp_nnan_nsz_ule_zero_unary_fneg(double %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ule_zero_unary_fneg( +; CHECK-NEXT: [[LEZERO:%.*]] = fcmp ule double [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fneg fast double [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LEZERO]], double [[NEGX]], double [[X]] +; CHECK-NEXT: ret double [[FABS]] +; + %lezero = fcmp ule double %x, 0.0 + %negx = fneg fast double %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) { @@ -399,6 +489,21 @@ define float @select_fcmp_nnan_nsz_ole_negzero(float %x) { ret float %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define float @select_fcmp_nnan_nsz_ule_negzero(float %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ule_negzero( +; CHECK-NEXT: [[LEZERO:%.*]] = fcmp ule float [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fsub nnan nsz float -0.000000e+00, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LEZERO]], float [[NEGX]], float [[X]] +; CHECK-NEXT: ret float [[FABS]] +; + %lezero = fcmp ule float %x, -0.0 + %negx = fsub nnan nsz float -0.0, %x + %fabs = select i1 %lezero, float %negx, float %x + ret float %fabs +} + define float @select_fcmp_nnan_nsz_ole_negzero_unary_fneg(float %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_ole_negzero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz float @llvm.fabs.f32(float [[X:%.*]]) @@ -410,6 +515,21 @@ define float @select_fcmp_nnan_nsz_ole_negzero_unary_fneg(float %x) { ret float %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define float @select_fcmp_nnan_nsz_ule_negzero_unary_fneg(float %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ule_negzero_unary_fneg( +; CHECK-NEXT: [[LEZERO:%.*]] = fcmp ule float [[X:%.*]], 0.000000e+00 +; CHECK-NEXT: [[NEGX:%.*]] = fneg nnan nsz float [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[LEZERO]], float [[NEGX]], float [[X]] +; CHECK-NEXT: ret float [[FABS]] +; + %lezero = fcmp ule float %x, -0.0 + %negx = fneg nnan nsz float %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) { @@ -423,6 +543,21 @@ define <2 x float> @select_fcmp_nnan_nsz_ogt_zero(<2 x float> %x) { ret <2 x float> %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define <2 x float> @select_fcmp_nnan_nsz_ugt_zero(<2 x float> %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ugt_zero( +; CHECK-NEXT: [[GTZERO:%.*]] = fcmp ugt <2 x float> [[X:%.*]], zeroinitializer +; CHECK-NEXT: [[NEGX:%.*]] = fsub nnan nsz arcp <2 x float> , [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select <2 x i1> [[GTZERO]], <2 x float> [[X]], <2 x float> [[NEGX]] +; CHECK-NEXT: ret <2 x float> [[FABS]] +; + %gtzero = fcmp ugt <2 x float> %x, zeroinitializer + %negx = fsub nnan nsz arcp <2 x float> , %x + %fabs = select <2 x i1> %gtzero, <2 x float> %x, <2 x float> %negx + ret <2 x float> %fabs +} + define <2 x float> @select_fcmp_nnan_nsz_ogt_zero_unary_fneg(<2 x float> %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_ogt_zero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz arcp <2 x float> @llvm.fabs.v2f32(<2 x float> [[X:%.*]]) @@ -434,6 +569,21 @@ define <2 x float> @select_fcmp_nnan_nsz_ogt_zero_unary_fneg(<2 x float> %x) { ret <2 x float> %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define <2 x float> @select_fcmp_nnan_nsz_ugt_zero_unary_fneg(<2 x float> %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ugt_zero_unary_fneg( +; CHECK-NEXT: [[GTZERO:%.*]] = fcmp ugt <2 x float> [[X:%.*]], zeroinitializer +; CHECK-NEXT: [[NEGX:%.*]] = fneg nnan nsz arcp <2 x float> [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select <2 x i1> [[GTZERO]], <2 x float> [[X]], <2 x float> [[NEGX]] +; CHECK-NEXT: ret <2 x float> [[FABS]] +; + %gtzero = fcmp ugt <2 x float> %x, zeroinitializer + %negx = fneg nnan nsz arcp <2 x float> %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) { @@ -447,6 +597,21 @@ define half @select_fcmp_nnan_nsz_ogt_negzero(half %x) { ret half %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define half @select_fcmp_nnan_nsz_ugt_negzero(half %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_ugt_negzero( +; CHECK-NEXT: [[GTZERO:%.*]] = fcmp ugt half [[X:%.*]], 0xH0000 +; CHECK-NEXT: [[NEGX:%.*]] = fsub fast half 0xH8000, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[GTZERO]], half [[X]], half [[NEGX]] +; CHECK-NEXT: ret half [[FABS]] +; + %gtzero = fcmp ugt half %x, -0.0 + %negx = fsub fast 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) { @@ -460,6 +625,21 @@ define <2 x double> @select_fcmp_nnan_nsz_oge_zero(<2 x double> %x) { ret <2 x double> %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define <2 x double> @select_fcmp_nnan_nsz_uge_zero(<2 x double> %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_uge_zero( +; CHECK-NEXT: [[GEZERO:%.*]] = fcmp uge <2 x double> [[X:%.*]], zeroinitializer +; CHECK-NEXT: [[NEGX:%.*]] = fsub reassoc nnan nsz <2 x double> , [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select <2 x i1> [[GEZERO]], <2 x double> [[X]], <2 x double> [[NEGX]] +; CHECK-NEXT: ret <2 x double> [[FABS]] +; + %gezero = fcmp uge <2 x double> %x, zeroinitializer + %negx = fsub nnan nsz reassoc <2 x double> , %x + %fabs = select <2 x i1> %gezero, <2 x double> %x, <2 x double> %negx + ret <2 x double> %fabs +} + define <2 x double> @select_fcmp_nnan_nsz_oge_zero_unary_fneg(<2 x double> %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_oge_zero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call reassoc nnan nsz <2 x double> @llvm.fabs.v2f64(<2 x double> [[X:%.*]]) @@ -471,6 +651,21 @@ define <2 x double> @select_fcmp_nnan_nsz_oge_zero_unary_fneg(<2 x double> %x) { ret <2 x double> %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define <2 x double> @select_fcmp_nnan_nsz_uge_zero_unary_fneg(<2 x double> %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_uge_zero_unary_fneg( +; CHECK-NEXT: [[GEZERO:%.*]] = fcmp uge <2 x double> [[X:%.*]], zeroinitializer +; CHECK-NEXT: [[NEGX:%.*]] = fneg reassoc nnan nsz <2 x double> [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select <2 x i1> [[GEZERO]], <2 x double> [[X]], <2 x double> [[NEGX]] +; CHECK-NEXT: ret <2 x double> [[FABS]] +; + %gezero = fcmp uge <2 x double> %x, zeroinitializer + %negx = fneg nnan nsz reassoc <2 x double> %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) { @@ -484,6 +679,21 @@ define half @select_fcmp_nnan_nsz_oge_negzero(half %x) { ret half %fabs } +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define half @select_fcmp_nnan_nsz_uge_negzero(half %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_uge_negzero( +; CHECK-NEXT: [[GEZERO:%.*]] = fcmp uge half [[X:%.*]], 0xH0000 +; CHECK-NEXT: [[NEGX:%.*]] = fsub nnan nsz half 0xH8000, [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[GEZERO]], half [[X]], half [[NEGX]] +; CHECK-NEXT: ret half [[FABS]] +; + %gezero = fcmp uge half %x, -0.0 + %negx = fsub nnan nsz half -0.0, %x + %fabs = select i1 %gezero, half %x, half %negx + ret half %fabs +} + define half @select_fcmp_nnan_nsz_oge_negzero_unary_fneg(half %x) { ; CHECK-LABEL: @select_fcmp_nnan_nsz_oge_negzero_unary_fneg( ; CHECK-NEXT: [[TMP1:%.*]] = call nnan nsz half @llvm.fabs.f16(half [[X:%.*]]) @@ -494,3 +704,18 @@ define half @select_fcmp_nnan_nsz_oge_negzero_unary_fneg(half %x) { %fabs = select i1 %gezero, half %x, half %negx ret half %fabs } + +; Repeat with unordered predicate - nnan allows us to treat ordered/unordered identically. + +define half @select_fcmp_nnan_nsz_uge_negzero_unary_fneg(half %x) { +; CHECK-LABEL: @select_fcmp_nnan_nsz_uge_negzero_unary_fneg( +; CHECK-NEXT: [[GEZERO:%.*]] = fcmp uge half [[X:%.*]], 0xH0000 +; CHECK-NEXT: [[NEGX:%.*]] = fneg nnan nsz half [[X]] +; CHECK-NEXT: [[FABS:%.*]] = select i1 [[GEZERO]], half [[X]], half [[NEGX]] +; CHECK-NEXT: ret half [[FABS]] +; + %gezero = fcmp uge half %x, -0.0 + %negx = fneg nnan nsz half %x + %fabs = select i1 %gezero, half %x, half %negx + ret half %fabs +} -- 2.50.1