forked from OSchip/llvm-project
[InstSimplify] add more tests for fcmp+select; NFC
The addition of FMF for select allows more folding for these kinds of patterns.
This commit is contained in:
Sanjay Patel
parent
ef85f47595
commit
499c90afe9
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@ -48,6 +48,162 @@ define double @une_swapped(double %x) {
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ret double %cond
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}
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; X == 0.0 ? X : 0.0 --> ? (X could be -0.0)
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define double @oeq_zero(double %x) {
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; CHECK-LABEL: @oeq_zero(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double 0.000000e+00
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp oeq double %x, 0.0
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%cond = select i1 %cmp, double %x, double 0.0
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ret double %cond
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}
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; X == 0.0 ? 0.0 : X --> ? (change sign if X is -0.0)
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define float @oeq_zero_swapped(float %x) {
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; CHECK-LABEL: @oeq_zero_swapped(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], float 0.000000e+00, float [[X]]
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; CHECK-NEXT: ret float [[COND]]
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;
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%cmp = fcmp oeq float %x, 0.0
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%cond = select i1 %cmp, float 0.0, float %x
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ret float %cond
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}
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; X != 0.0 ? X : -0.0 --> ? (change sign if X is 0.0)
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define double @une_zero(double %x) {
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; CHECK-LABEL: @une_zero(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double [[X]], double -0.000000e+00
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp une double %x, 0.0
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%cond = select i1 %cmp, double %x, double -0.0
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ret double %cond
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}
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; X != 0.0 ? -0.0 : X --> ? (X could be 0.0)
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define double @une_zero_swapped(double %x) {
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; CHECK-LABEL: @une_zero_swapped(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], double -0.000000e+00, double [[X]]
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp une double %x, 0.0
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%cond = select i1 %cmp, double -0.0, double %x
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ret double %cond
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}
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; X == 0.0 ? X : 0.0 --> 0.0
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define double @oeq_zero_nsz(double %x) {
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; CHECK-LABEL: @oeq_zero_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select nsz i1 [[CMP]], double [[X]], double 0.000000e+00
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp oeq double %x, 0.0
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%cond = select nsz i1 %cmp, double %x, double 0.0
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ret double %cond
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}
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; X == 0.0 ? 0.0 : X --> X
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define float @oeq_zero_swapped_nsz(float %x) {
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; CHECK-LABEL: @oeq_zero_swapped_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select fast i1 [[CMP]], float 0.000000e+00, float [[X]]
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; CHECK-NEXT: ret float [[COND]]
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;
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%cmp = fcmp oeq float %x, 0.0
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%cond = select fast i1 %cmp, float 0.0, float %x
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ret float %cond
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}
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; X != 0.0 ? X : -0.0 --> X
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define double @une_zero_nsz(double %x) {
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; CHECK-LABEL: @une_zero_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[COND:%.*]] = select ninf nsz i1 [[CMP]], double [[X]], double -0.000000e+00
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp une double %x, 0.0
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%cond = select nsz ninf i1 %cmp, double %x, double -0.0
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ret double %cond
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}
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; X != 0.0 ? -0.0 : X --> 0.0
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define <2 x double> @une_zero_swapped_nsz(<2 x double> %x) {
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; CHECK-LABEL: @une_zero_swapped_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une <2 x double> [[X:%.*]], <double -0.000000e+00, double 0.000000e+00>
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; CHECK-NEXT: [[COND:%.*]] = select nsz <2 x i1> [[CMP]], <2 x double> <double 0.000000e+00, double -0.000000e+00>, <2 x double> [[X]]
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; CHECK-NEXT: ret <2 x double> [[COND]]
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;
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%cmp = fcmp une <2 x double> %x, <double -0.0, double 0.0>
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%cond = select nsz <2 x i1> %cmp, <2 x double> <double 0.0, double -0.0>, <2 x double> %x
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ret <2 x double> %cond
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}
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; X == Y ? X : Y --> Y
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define double @oeq_nsz(double %x, double %y) {
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; CHECK-LABEL: @oeq_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq double [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[COND:%.*]] = select fast i1 [[CMP]], double [[X]], double [[Y]]
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp oeq double %x, %y
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%cond = select fast i1 %cmp, double %x, double %y
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ret double %cond
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}
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; X == Y ? Y : X --> X
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define <2 x float> @oeq_swapped_nsz(<2 x float> %x, <2 x float> %y) {
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; CHECK-LABEL: @oeq_swapped_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq <2 x float> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[COND:%.*]] = select nnan nsz <2 x i1> [[CMP]], <2 x float> [[Y]], <2 x float> [[X]]
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; CHECK-NEXT: ret <2 x float> [[COND]]
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;
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%cmp = fcmp oeq <2 x float> %x, %y
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%cond = select nsz nnan <2 x i1> %cmp, <2 x float> %y, <2 x float> %x
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ret <2 x float> %cond
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}
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; X != Y ? X : Y --> X
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define double @une_nsz(double %x, double %y) {
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; CHECK-LABEL: @une_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[COND:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[Y]]
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; CHECK-NEXT: ret double [[COND]]
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;
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%cmp = fcmp une double %x, %y
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%cond = select nsz i1 %cmp, double %x, double %y
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ret double %cond
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}
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; X != Y ? Y : X --> Y
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define <2 x double> @une_swapped_nsz(<2 x double> %x, <2 x double> %y) {
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; CHECK-LABEL: @une_swapped_nsz(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une <2 x double> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[COND:%.*]] = select fast <2 x i1> [[CMP]], <2 x double> [[Y]], <2 x double> [[X]]
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; CHECK-NEXT: ret <2 x double> [[COND]]
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;
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%cmp = fcmp une <2 x double> %x, %y
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%cond = select fast <2 x i1> %cmp, <2 x double> %y, <2 x double> %x
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ret <2 x double> %cond
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}
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define double @une_could_be_negzero(double %x, double %y) {
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; CHECK-LABEL: @une_could_be_negzero(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp une double [[X:%.*]], [[Y:%.*]]
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