| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; (X < +/-0.0) ? X : -X --> -fabs(X) |
| ; (X <= +/-0.0) ? X : -X --> -fabs(X) |
| ; One negative test with no fmf |
| define double @select_noFMF_nfabs_lt(double %x) { |
| ; CHECK-LABEL: @select_noFMF_nfabs_lt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp olt double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| ; One test where the neg has fmfs. |
| define double @select_nsz_nfabs_lt_fmfProp(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_lt_fmfProp( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg fast double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp olt double %x, 0.000000e+00 |
| %negX = fneg fast double %x |
| %sel = select nsz i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| ; Tests with various predicate types. |
| define double @select_nsz_nfabs_olt(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_olt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp olt double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_ult(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_ult( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ult double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_ole(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_ole( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ole double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ole double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_ule(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_ule( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ule double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ule double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %x, double %negX |
| ret double %sel |
| } |
| |
| ; (X > +/-0.0) ? -X : X --> -fabs(X) |
| ; (X >= +/-0.0) ? -X : X --> -fabs(X) |
| ; One negative test with no fmf |
| define double @select_noFMF_nfabs_gt(double %x) { |
| ; CHECK-LABEL: @select_noFMF_nfabs_gt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ogt double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| ; One test where the neg has fmfs. |
| define double @select_nsz_nfabs_gt_fmfProp(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_gt_fmfProp( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg fast double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ogt double %x, 0.000000e+00 |
| %negX = fneg fast double %x |
| %sel = select nsz i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| ; Tests with various predicate types. |
| define double @select_nsz_nfabs_ogt(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_ogt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ogt double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_ugt(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_ugt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ugt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp ugt double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_oge(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_oge( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp oge double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp oge double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| define double @select_nsz_nfabs_uge(double %x) { |
| ; CHECK-LABEL: @select_nsz_nfabs_uge( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp uge double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg double [[X]] |
| ; CHECK-NEXT: [[SEL:%.*]] = select nsz i1 [[CMP]], double [[NEGX]], double [[X]] |
| ; CHECK-NEXT: ret double [[SEL]] |
| ; |
| %cmp = fcmp uge double %x, 0.000000e+00 |
| %negX = fneg double %x |
| %sel = select nsz i1 %cmp, double %negX, double %x |
| ret double %sel |
| } |
| |
| ; (X < +/-0.0) ? X : (0.0 - X) --> (0.0 - fabs(X)) |
| ; One negative test with <=. |
| define double @select_noFMF_fsubfabs_le(double %x) { |
| ; CHECK-LABEL: @select_noFMF_fsubfabs_le( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ole double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]] |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]] |
| ; CHECK-NEXT: ret double [[RETVAL_0]] |
| ; |
| %cmp = fcmp ole double %x, 0.000000e+00 |
| %sub = fsub double 0.000000e+00, %x |
| %retval.0 = select i1 %cmp, double %x, double %sub |
| ret double %retval.0 |
| } |
| |
| define double @select_noFMF_fsubfabs_olt(double %x) { |
| ; CHECK-LABEL: @select_noFMF_fsubfabs_olt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]] |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]] |
| ; CHECK-NEXT: ret double [[RETVAL_0]] |
| ; |
| %cmp = fcmp olt double %x, 0.000000e+00 |
| %sub = fsub double 0.000000e+00, %x |
| %retval.0 = select i1 %cmp, double %x, double %sub |
| ret double %retval.0 |
| } |
| |
| define double @select_noFMF_fsubfabs_ult(double %x) { |
| ; CHECK-LABEL: @select_noFMF_fsubfabs_ult( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[SUB:%.*]] = fsub double 0.000000e+00, [[X]] |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[SUB]] |
| ; CHECK-NEXT: ret double [[RETVAL_0]] |
| ; |
| %cmp = fcmp ult double %x, 0.000000e+00 |
| %sub = fsub double 0.000000e+00, %x |
| %retval.0 = select i1 %cmp, double %x, double %sub |
| ret double %retval.0 |
| } |
| |
| |
| ; With nsz: |
| ; (X < +/-0.0) ? X : -X --> -fabs(X) |
| define double @select_nsz_fnegfabs_olt(double %x) { |
| ; CHECK-LABEL: @select_nsz_fnegfabs_olt( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp olt double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg nsz double [[X]] |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[RETVAL_0]] |
| ; |
| %cmp = fcmp olt double %x, 0.000000e+00 |
| %negX = fneg nsz double %x |
| %retval.0 = select i1 %cmp, double %x, double %negX |
| ret double %retval.0 |
| } |
| |
| define double @select_nsz_fnegfabs_ult(double %x) { |
| ; CHECK-LABEL: @select_nsz_fnegfabs_ult( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ult double [[X:%.*]], 0.000000e+00 |
| ; CHECK-NEXT: [[NEGX:%.*]] = fneg nsz double [[X]] |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = select i1 [[CMP]], double [[X]], double [[NEGX]] |
| ; CHECK-NEXT: ret double [[RETVAL_0]] |
| ; |
| %cmp = fcmp ult double %x, 0.000000e+00 |
| %negX = fneg nsz double %x |
| %retval.0 = select i1 %cmp, double %x, double %negX |
| ret double %retval.0 |
| } |