1 ; RUN: llc < %s -frame-pointer=all -verify-coalescing
4 ; During coalescing, remat triggers DCE which deletes the penultimate use of a
5 ; load. This load should not be folded into the remaining use because it is not
6 ; safe to move, and it would extend the live range of the address.
8 ; LiveRangeEdit::foldAsLoad() doesn't extend live ranges, so -verify-coalescing
11 target triple = "i386-unknown-linux-gnu"
13 %type_a = type { %type_a*, %type_b }
14 %type_b = type { %type_c, i32 }
15 %type_c = type { i32, %type_d }
16 %type_d = type { i64 }
17 %type_e = type { %type_c, i64 }
19 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind
21 define linkonce_odr void @test() nounwind {
23 br i1 undef, label %while.end.while.end26_crit_edge, label %while.body12.lr.ph
25 while.end.while.end26_crit_edge: ; preds = %entry
28 while.body12.lr.ph: ; preds = %entry
29 br label %while.body12
31 while.body12: ; preds = %if.end24, %while.body12.lr.ph
32 %tmp = phi %type_a* [ undef, %while.body12.lr.ph ], [ %tmp18, %if.end24 ]
33 %ins151154161 = phi i128 [ 0, %while.body12.lr.ph ], [ %phitmp, %if.end24 ]
34 %ins135156160 = phi i128 [ 0, %while.body12.lr.ph ], [ %phitmp158, %if.end24 ]
35 %ins151 = or i128 0, %ins151154161
36 %cmp.i.i.i.i.i67 = icmp sgt i32 undef, 8
37 br i1 %cmp.i.i.i.i.i67, label %if.then.i.i.i.i71, label %if.else.i.i.i.i74
39 if.then.i.i.i.i71: ; preds = %while.body12
40 %call4.i.i.i.i68 = call noalias i8* @malloc(i32 undef) nounwind
41 %tmp1 = getelementptr inbounds %type_a, %type_a* %tmp, i32 0, i32 1, i32 0, i32 1
42 %buf_6.i.i.i.i70 = bitcast %type_d* %tmp1 to i8**
43 %tmp2 = load i8*, i8** %buf_6.i.i.i.i70, align 4
44 call void @llvm.memcpy.p0i8.p0i8.i32(i8* undef, i8* %tmp2, i32 undef, i1 false) nounwind
47 if.else.i.i.i.i74: ; preds = %while.body12
48 %i_.i.i.i.i72 = getelementptr inbounds %type_a, %type_a* %tmp, i32 0, i32 1, i32 0, i32 1, i32 0
49 %tmp3 = load i64, i64* %i_.i.i.i.i72, align 4
50 %tmp4 = zext i64 %tmp3 to i128
51 %tmp5 = shl nuw nsw i128 %tmp4, 32
52 %ins148 = or i128 %tmp5, %ins151
53 %second3.i.i76 = getelementptr inbounds %type_a, %type_a* %tmp, i32 0, i32 1, i32 1
54 %tmp6 = load i32, i32* %second3.i.i76, align 4
55 %tmp7 = zext i32 %tmp6 to i128
56 %tmp8 = shl nuw i128 %tmp7, 96
57 %mask144 = and i128 %ins148, 79228162495817593519834398720
58 %tmp9 = load %type_e*, %type_e** undef, align 4
59 %len_.i.i.i.i86 = getelementptr inbounds %type_e, %type_e* %tmp9, i32 0, i32 0, i32 0
60 %tmp10 = load i32, i32* %len_.i.i.i.i86, align 4
61 %tmp11 = zext i32 %tmp10 to i128
62 %ins135 = or i128 %tmp11, %ins135156160
63 %cmp.i.i.i.i.i88 = icmp sgt i32 %tmp10, 8
64 br i1 %cmp.i.i.i.i.i88, label %if.then.i.i.i.i92, label %if.else.i.i.i.i95
66 if.then.i.i.i.i92: ; preds = %if.else.i.i.i.i74
67 %call4.i.i.i.i89 = call noalias i8* @malloc(i32 %tmp10) nounwind
68 %ins126 = or i128 0, %ins135
69 %tmp12 = getelementptr inbounds %type_e, %type_e* %tmp9, i32 0, i32 0, i32 1
70 %buf_6.i.i.i.i91 = bitcast %type_d* %tmp12 to i8**
71 %tmp13 = load i8*, i8** %buf_6.i.i.i.i91, align 4
72 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %call4.i.i.i.i89, i8* %tmp13, i32 %tmp10, i1 false) nounwind
75 if.else.i.i.i.i95: ; preds = %if.else.i.i.i.i74
76 %i_.i.i.i.i93 = getelementptr inbounds %type_e, %type_e* %tmp9, i32 0, i32 0, i32 1, i32 0
79 A: ; preds = %if.else.i.i.i.i95, %if.then.i.i.i.i92
80 %ins135157 = phi i128 [ %ins126, %if.then.i.i.i.i92 ], [ undef, %if.else.i.i.i.i95 ]
81 %second3.i.i97 = getelementptr inbounds %type_e, %type_e* %tmp9, i32 0, i32 1
82 %tmp14 = load i64, i64* %second3.i.i97, align 4
83 %tmp15 = trunc i64 %tmp14 to i32
84 %cmp.i99 = icmp sgt i32 %tmp6, %tmp15
85 %tmp16 = trunc i128 %ins135157 to i32
86 %cmp.i.i.i.i.i.i101 = icmp sgt i32 %tmp16, 8
87 br i1 %cmp.i.i.i.i.i.i101, label %if.then.i.i.i.i.i103, label %B
89 if.then.i.i.i.i.i103: ; preds = %A
93 %tmp17 = trunc i128 %ins148 to i32
94 %cmp.i.i.i.i.i.i83 = icmp sgt i32 %tmp17, 8
95 br i1 %cmp.i.i.i.i.i.i83, label %if.then.i.i.i.i.i85, label %C
97 if.then.i.i.i.i.i85: ; preds = %B
101 br i1 %cmp.i99, label %if.then17, label %if.end24
103 if.then17: ; preds = %C
104 br i1 false, label %if.then.i.i.i.i.i43, label %D
106 if.then.i.i.i.i.i43: ; preds = %if.then17
109 D: ; preds = %if.then17
110 br i1 undef, label %if.then.i.i.i.i.i, label %E
112 if.then.i.i.i.i.i: ; preds = %D
118 if.end24: ; preds = %E, %C
119 %phitmp = or i128 %tmp8, %mask144
120 %phitmp158 = or i128 undef, undef
121 %tmp18 = load %type_a*, %type_a** undef, align 4
122 %tmp19 = load %type_a*, %type_a** undef, align 4
123 %cmp.i49 = icmp eq %type_a* %tmp18, %tmp19
124 br i1 %cmp.i49, label %while.cond10.while.end26_crit_edge, label %while.body12
126 while.cond10.while.end26_crit_edge: ; preds = %if.end24
127 %.pre = load %type_e*, %type_e** undef, align 4
128 br label %while.end26
130 while.end26: ; preds = %while.cond10.while.end26_crit_edge, %while.end.while.end26_crit_edge
131 br i1 undef, label %while.body.lr.ph.i, label %F
133 while.body.lr.ph.i: ; preds = %while.end26
134 br label %while.body.i
136 while.body.i: ; preds = %while.body.i, %while.body.lr.ph.i
137 br i1 false, label %while.body.i, label %F
139 F: ; preds = %while.body.i, %while.end26
143 declare noalias i8* @malloc(i32) nounwind