| ; RUN: llc < %s -mtriple=arm64-- | FileCheck %s |
| |
| ; This test provides fmf coverage for DAG combining of selects |
| |
| ; CHECK-LABEL: select_select_fold_select_and |
| ; CHECK: fminnm s1, s1, s2 |
| ; CHECK-NEXT: fmaxnm s2, s0, s3 |
| ; CHECK-NEXT: fmov |
| ; CHECK-NEXT: fccmp s1, s0, #4, lt |
| ; CHECK-NEXT: fcsel s2, s2, s0, gt |
| |
| ; select Cond0, (select Cond1, X, Y), Y -> select (and Cond0, Cond1), X, Y |
| define float @select_select_fold_select_and(float %w, float %x, float %y, float %z) { |
| %tmp21 = fcmp fast olt float %x, %y |
| %tmp22 = select fast i1 %tmp21, float %x, float %y |
| %tmp24 = fcmp fast ogt float %tmp22, %w |
| %tmp78 = fcmp fast ogt float %w, %z |
| %select0 = select fast i1 %tmp78, float %w, float %z |
| %select1 = select fast i1 %tmp21, float %select0, float %w |
| %select2 = select fast i1 %tmp24, float %select1, float %w |
| %tmp82 = fadd fast float %w, 5.000000e-01 |
| %tmp102 = fadd fast float %tmp82, %select2 |
| %cmp.i155.i.i = fcmp fast ogt float %tmp102, %tmp82 |
| br i1 %cmp.i155.i.i, label %if.then.i157.i.i, label %if.end.i159.i.i |
| |
| if.then.i157.i.i: ; preds = %0 |
| %add.i156.i.i = fadd fast float %select2, 1.000000e+00 |
| br label %exit |
| |
| if.end.i159.i.i: ; preds = %0 |
| %sub.i158.i.i = fadd fast float %w, 0xBFD99999A0000000 |
| %sub15.i.i.i = fadd fast float %z, 0xBFD6666660000000 |
| %tmp191 = fcmp fast ogt float %tmp82, 0.000000e+00 |
| %select3 = select fast i1 %tmp191, float %sub.i158.i.i, float %sub15.i.i.i |
| br label %exit |
| |
| exit: ; preds = %if.end.i159.i.i, %if.then.i157.i.i |
| %phi1 = phi float [ %add.i156.i.i, %if.then.i157.i.i ], [ %select3, %if.end.i159.i.i ] |
| ret float %phi1 |
| } |
| |
| ; CHECK-LABEL: select_select_fold_select_or |
| ; CHECK: fcmp s1, s2 |
| ; CHECK-NEXT: fminnm s1, s1, s2 |
| ; CHECK-NEXT: fmaxnm s2, s0, s3 |
| ; CHECK-NEXT: fmov |
| ; CHECK-NEXT: fccmp s1, s0, #0, ge |
| ; CHECK-NEXT: fcsel s2, s0, s2, gt |
| |
| ; select Cond0, X, (select Cond1, X, Y) -> select (or Cond0, Cond1), X, Y |
| define float @select_select_fold_select_or(float %w, float %x, float %y, float %z) { |
| %tmp21 = fcmp fast olt float %x, %y |
| %tmp22 = select fast i1 %tmp21, float %x, float %y |
| %tmp24 = fcmp fast ogt float %tmp22, %w |
| %tmp78 = fcmp fast ogt float %w, %z |
| %select0 = select fast i1 %tmp78, float %w, float %z |
| %select1 = select fast i1 %tmp21, float %w, float %select0 |
| %select2 = select fast i1 %tmp24, float %w, float %select1 |
| %tmp82 = fadd fast float %w, 5.000000e-01 |
| %tmp102 = fadd fast float %tmp82, %select2 |
| %cmp.i155.i.i = fcmp fast ogt float %tmp102, %tmp82 |
| br i1 %cmp.i155.i.i, label %if.then.i157.i.i, label %if.end.i159.i.i |
| |
| if.then.i157.i.i: ; preds = %0 |
| %add.i156.i.i = fadd fast float %select2, 1.000000e+00 |
| br label %exit |
| |
| if.end.i159.i.i: ; preds = %0 |
| %sub.i158.i.i = fadd fast float %w, 0xBFD99999A0000000 |
| %sub15.i.i.i = fadd fast float %z, 0xBFD6666660000000 |
| %tmp191 = fcmp fast ogt float %tmp82, 0.000000e+00 |
| %select3 = select fast i1 %tmp191, float %sub.i158.i.i, float %sub15.i.i.i |
| br label %exit |
| |
| exit: ; preds = %if.end.i159.i.i, %if.then.i157.i.i |
| %phi1 = phi float [ %add.i156.i.i, %if.then.i157.i.i ], [ %select3, %if.end.i159.i.i ] |
| ret float %phi1 |
| } |