1 ; RUN: llc < %s -mtriple=arm64-- | FileCheck %s
3 ; This test provides fmf coverage for DAG combining of selects
5 ; CHECK-LABEL: select_select_fold_select_and
6 ; CHECK: fminnm s1, s1, s2
7 ; CHECK-NEXT: fmaxnm s2, s0, s3
9 ; CHECK-NEXT: fccmp s1, s0, #4, lt
10 ; CHECK-NEXT: fcsel s2, s2, s0, gt
12 ; select Cond0, (select Cond1, X, Y), Y -> select (and Cond0, Cond1), X, Y
13 define float @select_select_fold_select_and(float %w, float %x, float %y, float %z) {
14 %tmp21 = fcmp fast olt float %x, %y
15 %tmp22 = select fast i1 %tmp21, float %x, float %y
16 %tmp24 = fcmp fast ogt float %tmp22, %w
17 %tmp78 = fcmp fast ogt float %w, %z
18 %select0 = select fast i1 %tmp78, float %w, float %z
19 %select1 = select fast i1 %tmp21, float %select0, float %w
20 %select2 = select fast i1 %tmp24, float %select1, float %w
21 %tmp82 = fadd fast float %w, 5.000000e-01
22 %tmp102 = fadd fast float %tmp82, %select2
23 %cmp.i155.i.i = fcmp fast ogt float %tmp102, %tmp82
24 br i1 %cmp.i155.i.i, label %if.then.i157.i.i, label %if.end.i159.i.i
26 if.then.i157.i.i: ; preds = %0
27 %add.i156.i.i = fadd fast float %select2, 1.000000e+00
30 if.end.i159.i.i: ; preds = %0
31 %sub.i158.i.i = fadd fast float %w, 0xBFD99999A0000000
32 %sub15.i.i.i = fadd fast float %z, 0xBFD6666660000000
33 %tmp191 = fcmp fast ogt float %tmp82, 0.000000e+00
34 %select3 = select fast i1 %tmp191, float %sub.i158.i.i, float %sub15.i.i.i
37 exit: ; preds = %if.end.i159.i.i, %if.then.i157.i.i
38 %phi1 = phi float [ %add.i156.i.i, %if.then.i157.i.i ], [ %select3, %if.end.i159.i.i ]
42 ; CHECK-LABEL: select_select_fold_select_or
44 ; CHECK-NEXT: fminnm s1, s1, s2
45 ; CHECK-NEXT: fmaxnm s2, s0, s3
47 ; CHECK-NEXT: fccmp s1, s0, #0, ge
48 ; CHECK-NEXT: fcsel s2, s0, s2, gt
50 ; select Cond0, X, (select Cond1, X, Y) -> select (or Cond0, Cond1), X, Y
51 define float @select_select_fold_select_or(float %w, float %x, float %y, float %z) {
52 %tmp21 = fcmp fast olt float %x, %y
53 %tmp22 = select fast i1 %tmp21, float %x, float %y
54 %tmp24 = fcmp fast ogt float %tmp22, %w
55 %tmp78 = fcmp fast ogt float %w, %z
56 %select0 = select fast i1 %tmp78, float %w, float %z
57 %select1 = select fast i1 %tmp21, float %w, float %select0
58 %select2 = select fast i1 %tmp24, float %w, float %select1
59 %tmp82 = fadd fast float %w, 5.000000e-01
60 %tmp102 = fadd fast float %tmp82, %select2
61 %cmp.i155.i.i = fcmp fast ogt float %tmp102, %tmp82
62 br i1 %cmp.i155.i.i, label %if.then.i157.i.i, label %if.end.i159.i.i
64 if.then.i157.i.i: ; preds = %0
65 %add.i156.i.i = fadd fast float %select2, 1.000000e+00
68 if.end.i159.i.i: ; preds = %0
69 %sub.i158.i.i = fadd fast float %w, 0xBFD99999A0000000
70 %sub15.i.i.i = fadd fast float %z, 0xBFD6666660000000
71 %tmp191 = fcmp fast ogt float %tmp82, 0.000000e+00
72 %select3 = select fast i1 %tmp191, float %sub.i158.i.i, float %sub15.i.i.i
75 exit: ; preds = %if.end.i159.i.i, %if.then.i157.i.i
76 %phi1 = phi float [ %add.i156.i.i, %if.then.i157.i.i ], [ %select3, %if.end.i159.i.i ]