fixed-spill-mutable.ll
2.23 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
; RUN: llc -march=hexagon < %s | FileCheck %s
; The early return is predicated, and the save-restore code is mixed together:
; {
; p0 = cmp.eq(r0, #0)
; if (p0.new) r17:16 = memd(r29 + #0)
; memd(r29+#0) = r17:16
; }
; {
; if (p0) dealloc_return
; }
; The problem is that the load will execute before the store, clobbering the
; pair r17:16.
;
; Check that the store and the load are not in the same packet.
; CHECK: memd{{.*}} = r17:16
; CHECK: }
; CHECK: r17:16 = memd
; CHECK-LABEL: LBB0_1:
target triple = "hexagon"
%struct.0 = type { i8*, %struct.1*, %struct.2*, %struct.0*, %struct.0* }
%struct.1 = type { [60 x i8], i32, %struct.1* }
%struct.2 = type { i8, i8, i8, i8, %union.anon }
%union.anon = type { %struct.3* }
%struct.3 = type { %struct.3*, %struct.2* }
@var = external hidden unnamed_addr global %struct.0*, align 4
declare void @bar(i8*, i32) local_unnamed_addr #0
define void @foo() local_unnamed_addr #1 {
entry:
%.pr = load %struct.0*, %struct.0** @var, align 4, !tbaa !1
%cmp2 = icmp eq %struct.0* %.pr, null
br i1 %cmp2, label %while.end, label %while.body.preheader
while.body.preheader: ; preds = %entry
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
%0 = phi %struct.0* [ %4, %while.body ], [ %.pr, %while.body.preheader ]
%right = getelementptr inbounds %struct.0, %struct.0* %0, i32 0, i32 4
%1 = bitcast %struct.0** %right to i32*
%2 = load i32, i32* %1, align 4, !tbaa !5
%3 = bitcast %struct.0* %0 to i8*
tail call void @bar(i8* %3, i32 20) #1
store i32 %2, i32* bitcast (%struct.0** @var to i32*), align 4, !tbaa !1
%4 = inttoptr i32 %2 to %struct.0*
%cmp = icmp eq i32 %2, 0
br i1 %cmp, label %while.end.loopexit, label %while.body
while.end.loopexit: ; preds = %while.body
br label %while.end
while.end: ; preds = %while.end.loopexit, %entry
ret void
}
attributes #0 = { optsize }
attributes #1 = { nounwind optsize }
!1 = !{!2, !2, i64 0}
!2 = !{!"any pointer", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
!5 = !{!6, !2, i64 16}
!6 = !{!"0", !2, i64 0, !2, i64 4, !2, i64 8, !2, i64 12, !2, i64 16}