1 ; RUN: llc < %s -regalloc=greedy -mcpu=cortex-a8 -relocation-model=pic -frame-pointer=all -verify-machineinstrs | FileCheck %s
3 ; ARM tests that crash or fail with the greedy register allocator.
5 target triple = "thumbv7-apple-darwin"
7 declare double @exp(double)
10 define void @remat_subreg(float* nocapture %x, i32* %y, i32 %n, i32 %z, float %c, float %lambda, float* nocapture %ret_f, float* nocapture %ret_df, i1 %cond) nounwind {
12 %conv16 = fpext float %lambda to double
13 %mul17 = fmul double %conv16, -1.000000e+00
14 br i1 %cond, label %cond.end.us, label %cond.end
16 cond.end.us: ; preds = %entry
19 cond.end: ; preds = %cond.end, %entry
20 %mul = fmul double undef, 0.000000e+00
21 %add = fadd double undef, %mul
22 %add46 = fadd double undef, undef
23 %add75 = fadd double 0.000000e+00, undef
24 br i1 undef, label %for.end, label %cond.end
26 for.end: ; preds = %cond.end
27 %conv78 = sitofp i32 %z to double
28 %conv83 = fpext float %c to double
29 %mul84 = fmul double %mul17, %conv83
30 %call85 = tail call double @exp(double %mul84) nounwind
31 %mul86 = fmul double %conv78, %call85
32 %add88 = fadd double 0.000000e+00, %mul86
34 %call100 = tail call double @exp(double %mul84) nounwind
35 %mul101 = fmul double undef, %call100
36 %add103 = fadd double %add46, %mul101
37 %mul111 = fmul double undef, %conv83
38 %mul119 = fmul double %mul111, undef
39 %add121 = fadd double undef, %mul119
40 %div = fdiv double 1.000000e+00, %conv16
41 %div126 = fdiv double %add, %add75
42 %sub = fsub double %div, %div126
43 %div129 = fdiv double %add103, %add88
44 %add130 = fadd double %sub, %div129
45 %conv131 = fptrunc double %add130 to float
46 store float %conv131, float* %ret_f, align 4
47 %mul139 = fmul double %div129, %div129
48 %div142 = fdiv double %add121, %add88
49 %sub143 = fsub double %mul139, %div142
50 ; %lambda is passed on the stack, and the stack slot load is rematerialized.
51 ; The rematted load of a float constrains the D register used for the mul.
53 %mul146 = fmul float %lambda, %lambda
54 %conv147 = fpext float %mul146 to double
55 %div148 = fdiv double 1.000000e+00, %conv147
56 %sub149 = fsub double %sub143, %div148
57 %conv150 = fptrunc double %sub149 to float
58 store float %conv150, float* %ret_df, align 4
63 ; This test has a sub-register copy with a kill flag:
64 ; %6:ssub_3 = COPY killed %6:ssub_2; QPR_VFP2:%6
65 ; The rewriter must do something sensible with that, or the scavenger crashes.
66 define void @insert_elem() nounwind {
68 br i1 undef, label %if.end251, label %if.then84
70 if.then84: ; preds = %entry
71 br i1 undef, label %if.end251, label %if.then195
73 if.then195: ; preds = %if.then84
74 %div = fdiv float 1.000000e+00, undef
75 %vecinit207 = insertelement <4 x float> undef, float %div, i32 1
76 %vecinit208 = insertelement <4 x float> %vecinit207, float 1.000000e+00, i32 2
77 %vecinit209 = insertelement <4 x float> %vecinit208, float 1.000000e+00, i32 3
78 %mul216 = fmul <4 x float> zeroinitializer, %vecinit209
79 store <4 x float> %mul216, <4 x float>* undef, align 16
82 if.end251: ; preds = %if.then195, %if.then84, %entry
86 ; Coalescer failure: removeCopyByCommutingDef leaves a bad kill flag
88 define void @rdar11950722() nounwind readonly optsize ssp align 2 {
90 br i1 undef, label %land.lhs.true7, label %lor.lhs.false.i
93 br i1 undef, label %if.then10.i, label %land.lhs.true7
96 %xFlags.1.i = select i1 undef, i32 0, i32 undef
97 br i1 undef, label %land.lhs.true33.i, label %f.exit
100 %and26.i = and i32 %xFlags.1.i, 8
101 %cmp27.i = icmp eq i32 %and26.i, 0
102 %and29.i = and i32 %xFlags.1.i, 2147483645
103 %xFlags.1.and29.i = select i1 %cmp27.i, i32 %xFlags.1.i, i32 %and29.i
104 %and34.i = and i32 %xFlags.1.i, 8
105 %cmp35.i = icmp eq i32 %and34.i, 0
106 %and37.i = and i32 %xFlags.1.i, 2147483645
107 %yFlags.1.and37.i = select i1 %cmp35.i, i32 %xFlags.1.i, i32 %and37.i
111 %xFlags.3.i = phi i32 [ %xFlags.1.and29.i, %land.lhs.true33.i ], [ %xFlags.1.i, %if.then10.i ]
112 %yFlags.2.i = phi i32 [ %yFlags.1.and37.i, %land.lhs.true33.i ], [ %xFlags.1.i, %if.then10.i ]
113 %cmp40.i = icmp eq i32 %xFlags.3.i, %yFlags.2.i
114 br i1 %cmp40.i, label %land.lhs.true7, label %land.end
117 br i1 undef, label %land.lhs.true34, label %lor.lhs.false27
120 br i1 undef, label %land.lhs.true34, label %land.end
123 br i1 undef, label %land.end, label %lor.lhs.false44