| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instsimplify -S | FileCheck %s |
| |
| ; X == 42.0 ? X : 42.0 --> 42.0 |
| |
| define double @oeq(double %x) { |
| ; CHECK-LABEL: @oeq( |
| ; CHECK-NEXT: ret double 4.200000e+01 |
| ; |
| %cmp = fcmp oeq double %x, 42.0 |
| %cond = select i1 %cmp, double %x, double 42.0 |
| ret double %cond |
| } |
| |
| ; X == 42.0 ? 42.0 : X --> X |
| |
| define float @oeq_swapped(float %x) { |
| ; CHECK-LABEL: @oeq_swapped( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %cmp = fcmp oeq float %x, 42.0 |
| %cond = select i1 %cmp, float 42.0, float %x |
| ret float %cond |
| } |
| |
| ; x != y ? x : y -> x if it's the right kind of != and at least |
| ; one of x and y is not negative zero. |
| |
| ; X != 42.0 ? X : 42.0 --> X |
| |
| define double @une(double %x) { |
| ; CHECK-LABEL: @une( |
| ; CHECK-NEXT: ret double [[X:%.*]] |
| ; |
| %cmp = fcmp une double %x, 42.0 |
| %cond = select i1 %cmp, double %x, double 42.0 |
| ret double %cond |
| } |
| |
| ; X != 42.0 ? 42.0 : X --> 42.0 |
| |
| define double @une_swapped(double %x) { |
| ; CHECK-LABEL: @une_swapped( |
| ; CHECK-NEXT: ret double 4.200000e+01 |
| ; |
| %cmp = fcmp une double %x, 42.0 |
| %cond = select i1 %cmp, double 42.0, double %x |
| ret double %cond |
| } |
| |
| ; X == 0.0 ? X : 0.0 --> ? (X could be -0.0) |
| |
| define double @oeq_zero(double %x) { |
| ; CHECK-LABEL: @oeq_zero( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double 0.000000e+00 |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp oeq double %x, 0.0 |
| %cond = select i1 %cmp, double %x, double 0.0 |
| ret double %cond |
| } |
| |
| ; X == 0.0 ? 0.0 : X --> ? (change sign if X is -0.0) |
| |
| define float @oeq_zero_swapped(float %x) { |
| ; CHECK-LABEL: @oeq_zero_swapped( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], float 0.000000e+00, float [[X]] |
| ; CHECK-NEXT: ret float [[COND]] |
| ; |
| %cmp = fcmp oeq float %x, 0.0 |
| %cond = select i1 %cmp, float 0.0, float %x |
| ret float %cond |
| } |
| |
| ; X != 0.0 ? X : -0.0 --> ? (change sign if X is 0.0) |
| |
| define double @une_zero(double %x) { |
| ; CHECK-LABEL: @une_zero( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double -0.000000e+00 |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp une double %x, 0.0 |
| %cond = select i1 %cmp, double %x, double -0.0 |
| ret double %cond |
| } |
| |
| ; X != 0.0 ? -0.0 : X --> ? (X could be 0.0) |
| |
| define double @une_zero_swapped(double %x) { |
| ; CHECK-LABEL: @une_zero_swapped( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double -0.000000e+00, double [[X]] |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp une double %x, 0.0 |
| %cond = select i1 %cmp, double -0.0, double %x |
| ret double %cond |
| } |
| |
| ; X == 0.0 ? X : 0.0 --> 0.0 |
| |
| define double @oeq_zero_nsz(double %x) { |
| ; CHECK-LABEL: @oeq_zero_nsz( |
| ; CHECK-NEXT: ret double 0.000000e+00 |
| ; |
| %cmp = fcmp oeq double %x, 0.0 |
| %cond = select nsz i1 %cmp, double %x, double 0.0 |
| ret double %cond |
| } |
| |
| ; X == 0.0 ? 0.0 : X --> X |
| |
| define float @oeq_zero_swapped_nsz(float %x) { |
| ; CHECK-LABEL: @oeq_zero_swapped_nsz( |
| ; CHECK-NEXT: ret float [[X:%.*]] |
| ; |
| %cmp = fcmp oeq float %x, 0.0 |
| %cond = select fast i1 %cmp, float 0.0, float %x |
| ret float %cond |
| } |
| |
| ; X != 0.0 ? X : 0.0 --> X |
| |
| define double @une_zero_nsz(double %x) { |
| ; CHECK-LABEL: @une_zero_nsz( |
| ; CHECK-NEXT: ret double [[X:%.*]] |
| ; |
| %cmp = fcmp une double %x, 0.0 |
| %cond = select nsz ninf i1 %cmp, double %x, double 0.0 |
| ret double %cond |
| } |
| |
| ; X != 0.0 ? 0.0 : X --> 0.0 |
| |
| define <2 x double> @une_zero_swapped_nsz(<2 x double> %x) { |
| ; CHECK-LABEL: @une_zero_swapped_nsz( |
| ; CHECK-NEXT: ret <2 x double> zeroinitializer |
| ; |
| %cmp = fcmp une <2 x double> %x, <double 0.0, double 0.0> |
| %cond = select nsz <2 x i1> %cmp, <2 x double> <double 0.0, double 0.0>, <2 x double> %x |
| ret <2 x double> %cond |
| } |
| |
| ; X == Y ? X : Y --> Y |
| |
| define double @oeq_nsz(double %x, double %y) { |
| ; CHECK-LABEL: @oeq_nsz( |
| ; CHECK-NEXT: ret double [[Y:%.*]] |
| ; |
| %cmp = fcmp oeq double %x, %y |
| %cond = select fast i1 %cmp, double %x, double %y |
| ret double %cond |
| } |
| |
| ; X == Y ? Y : X --> X |
| |
| define <2 x float> @oeq_swapped_nsz(<2 x float> %x, <2 x float> %y) { |
| ; CHECK-LABEL: @oeq_swapped_nsz( |
| ; CHECK-NEXT: ret <2 x float> [[X:%.*]] |
| ; |
| %cmp = fcmp oeq <2 x float> %x, %y |
| %cond = select nsz nnan <2 x i1> %cmp, <2 x float> %y, <2 x float> %x |
| ret <2 x float> %cond |
| } |
| |
| ; X != Y ? X : Y --> X |
| |
| define double @une_nsz(double %x, double %y) { |
| ; CHECK-LABEL: @une_nsz( |
| ; CHECK-NEXT: ret double [[X:%.*]] |
| ; |
| %cmp = fcmp une double %x, %y |
| %cond = select nsz i1 %cmp, double %x, double %y |
| ret double %cond |
| } |
| |
| ; X != Y ? Y : X --> Y |
| |
| define <2 x double> @une_swapped_nsz(<2 x double> %x, <2 x double> %y) { |
| ; CHECK-LABEL: @une_swapped_nsz( |
| ; CHECK-NEXT: ret <2 x double> [[Y:%.*]] |
| ; |
| %cmp = fcmp une <2 x double> %x, %y |
| %cond = select fast <2 x i1> %cmp, <2 x double> %y, <2 x double> %x |
| ret <2 x double> %cond |
| } |
| |
| ; Harder - mismatched zero constants (not typical due to canonicalization): |
| ; X != 0.0 ? X : -0.0 --> X |
| |
| define double @une_zero_mismatch_nsz(double %x) { |
| ; CHECK-LABEL: @une_zero_mismatch_nsz( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select ninf nsz i1 [[CMP]], double [[X]], double -0.000000e+00 |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp une double %x, 0.0 |
| %cond = select nsz ninf i1 %cmp, double %x, double -0.0 |
| ret double %cond |
| } |
| |
| ; Even harder - mismatched vector zero constants (not typical due to canonicalization): |
| ; X != 0.0 ? -0.0 : X --> 0.0 |
| |
| define <2 x double> @une_zero_mismatch_swapped_nsz(<2 x double> %x) { |
| ; CHECK-LABEL: @une_zero_mismatch_swapped_nsz( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une <2 x double> [[X:%.*]], <double -0.000000e+00, double 0.000000e+00> |
| ; CHECK-NEXT: [[COND:%.*]] = select nsz <2 x i1> [[CMP]], <2 x double> <double 0.000000e+00, double -0.000000e+00>, <2 x double> [[X]] |
| ; CHECK-NEXT: ret <2 x double> [[COND]] |
| ; |
| %cmp = fcmp une <2 x double> %x, <double -0.0, double 0.0> |
| %cond = select nsz <2 x i1> %cmp, <2 x double> <double 0.0, double -0.0>, <2 x double> %x |
| ret <2 x double> %cond |
| } |
| |
| define double @une_could_be_negzero(double %x, double %y) { |
| ; CHECK-LABEL: @une_could_be_negzero( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double [[Y]] |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp une double %x, %y |
| %cond = select i1 %cmp, double %x, double %y |
| ret double %cond |
| } |
| |
| define double @une_swapped_could_be_negzero(double %x, double %y) { |
| ; CHECK-LABEL: @une_swapped_could_be_negzero( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[Y]], double [[X]] |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp une double %x, %y |
| %cond = select i1 %cmp, double %y, double %x |
| ret double %cond |
| } |
| |
| define double @one(double %x) { |
| ; CHECK-LABEL: @one( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp one double [[X:%.*]], -1.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double -1.000000e+00 |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp one double %x, -1.0 |
| %cond = select i1 %cmp, double %x, double -1.0 |
| ret double %cond |
| } |
| |
| define double @one_swapped(double %x) { |
| ; CHECK-LABEL: @one_swapped( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp one double [[X:%.*]], -1.000000e+00 |
| ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double -1.000000e+00, double [[X]] |
| ; CHECK-NEXT: ret double [[COND]] |
| ; |
| %cmp = fcmp one double %x, -1.0 |
| %cond = select i1 %cmp, double -1.0, double %x |
| ret double %cond |
| } |
| |