forked from OSchip/llvm-project
[NFC][Instcombine] Pre-commit some tests for negative fabs
Change-Id: Idcce321c825ecc6b3a111a683e24dc10015f6872
This commit is contained in:
Usman Nadeem
parent
8ba8cf24f7
commit
560dd1cdad
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@ -0,0 +1,238 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; (X < +/-0.0) ? X : -X --> -fabs(X)
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; (X <= +/-0.0) ? X : -X --> -fabs(X)
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; One negative test with no fmf
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define double @select_noFMF_nfabs_lt(double %x) {
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; CHECK-LABEL: @select_noFMF_nfabs_lt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp olt double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select i1 %cmp, double %x, double %negX
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ret double %sel
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}
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; One test where the neg has fmfs.
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define double @select_nsz_nfabs_lt_fmfProp(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_lt_fmfProp(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg fast double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp olt double %x, 0.000000e+00
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%negX = fneg fast double %x
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%sel = select nsz i1 %cmp, double %x, double %negX
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ret double %sel
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}
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; Tests with various predicate types.
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define double @select_nsz_nfabs_olt(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_olt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp olt double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %x, double %negX
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ret double %sel
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}
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define double @select_nsz_nfabs_ult(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_ult(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ult double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %x, double %negX
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ret double %sel
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}
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define double @select_nsz_nfabs_ole(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_ole(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ole double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ole double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %x, double %negX
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ret double %sel
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}
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define double @select_nsz_nfabs_ule(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_ule(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ule double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ule double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %x, double %negX
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ret double %sel
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}
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; (X > +/-0.0) ? -X : X --> -fabs(X)
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; (X >= +/-0.0) ? -X : X --> -fabs(X)
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; One negative test with no fmf
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define double @select_noFMF_nfabs_gt(double %x) {
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; CHECK-LABEL: @select_noFMF_nfabs_gt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ogt double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select i1 %cmp, double %negX, double %x
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ret double %sel
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}
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; One test where the neg has fmfs.
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define double @select_nsz_nfabs_gt_fmfProp(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_gt_fmfProp(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg fast double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ogt double %x, 0.000000e+00
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%negX = fneg fast double %x
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%sel = select nsz i1 %cmp, double %negX, double %x
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ret double %sel
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}
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; Tests with various predicate types.
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define double @select_nsz_nfabs_ogt(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_ogt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ogt double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %negX, double %x
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ret double %sel
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}
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define double @select_nsz_nfabs_ugt(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_ugt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ugt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp ugt double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %negX, double %x
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ret double %sel
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}
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define double @select_nsz_nfabs_oge(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_oge(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp oge double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp oge double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %negX, double %x
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ret double %sel
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}
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define double @select_nsz_nfabs_uge(double %x) {
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; CHECK-LABEL: @select_nsz_nfabs_uge(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp uge double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]]
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; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]]
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; CHECK-NEXT: ret double [[SEL]]
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;
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%cmp = fcmp uge double %x, 0.000000e+00
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%negX = fneg double %x
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%sel = select nsz i1 %cmp, double %negX, double %x
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ret double %sel
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}
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; (X < +/-0.0) ? X : (0.0 - X) --> (0.0 - fabs(X))
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; One negative test with <=.
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define double @select_noFMF_fsubfabs_le(double %x) {
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; CHECK-LABEL: @select_noFMF_fsubfabs_le(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ole double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]]
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; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]]
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; CHECK-NEXT: ret double [[RETVAL_0]]
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;
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%cmp = fcmp ole double %x, 0.000000e+00
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%sub = fsub double 0.000000e+00, %x
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%retval.0 = select i1 %cmp, double %x, double %sub
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ret double %retval.0
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}
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define double @select_noFMF_fsubfabs_olt(double %x) {
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; CHECK-LABEL: @select_noFMF_fsubfabs_olt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]]
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; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]]
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; CHECK-NEXT: ret double [[RETVAL_0]]
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;
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%cmp = fcmp olt double %x, 0.000000e+00
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%sub = fsub double 0.000000e+00, %x
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%retval.0 = select i1 %cmp, double %x, double %sub
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ret double %retval.0
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}
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define double @select_noFMF_fsubfabs_ult(double %x) {
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; CHECK-LABEL: @select_noFMF_fsubfabs_ult(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]]
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; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]]
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; CHECK-NEXT: ret double [[RETVAL_0]]
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;
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%cmp = fcmp ult double %x, 0.000000e+00
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%sub = fsub double 0.000000e+00, %x
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%retval.0 = select i1 %cmp, double %x, double %sub
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ret double %retval.0
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}
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; With nsz:
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; (X < +/-0.0) ? X : -X --> -fabs(X)
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define double @select_nsz_fnegfabs_olt(double %x) {
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; CHECK-LABEL: @select_nsz_fnegfabs_olt(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg nsz double [[X]]
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; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[RETVAL_0]]
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;
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%cmp = fcmp olt double %x, 0.000000e+00
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%negX = fneg nsz double %x
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%retval.0 = select i1 %cmp, double %x, double %negX
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ret double %retval.0
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}
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define double @select_nsz_fnegfabs_ult(double %x) {
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; CHECK-LABEL: @select_nsz_fnegfabs_ult(
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: [[NEGX:%.*]] = fneg nsz double [[X]]
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; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]]
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; CHECK-NEXT: ret double [[RETVAL_0]]
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;
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%cmp = fcmp ult double %x, 0.000000e+00
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%negX = fneg nsz double %x
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%retval.0 = select i1 %cmp, double %x, double %negX
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ret double %retval.0
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}
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