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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; NOTE: Only %local_3_4 is important here.
; All other instructions are needed to lure LLVM into executing
; specific code to trigger a bug.
; RUN: opt < %s -indvars -S | FileCheck %s
define i32 @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[OUTER:%.*]]
; CHECK: outer:
; CHECK-NEXT: [[LOCAL_6_6:%.*]] = phi i32 [ 10, [[ENTRY:%.*]] ], [ [[TMP5:%.*]], [[LATCH:%.*]] ]
; CHECK-NEXT: [[LOCAL_4_5:%.*]] = phi i32 [ 56587, [[ENTRY]] ], [ 0, [[LATCH]] ]
; CHECK-NEXT: [[LOCAL_3_4:%.*]] = phi i32 [ 2, [[ENTRY]] ], [ [[TMP5]], [[LATCH]] ]
; CHECK-NEXT: [[DOTUDIV:%.*]] = udiv i32 [[LOCAL_6_6]], 8361
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[LOCAL_7_3:%.*]] = phi i32 [ 2, [[OUTER]] ], [ [[TMP3:%.*]], [[INNER]] ]
; CHECK-NEXT: [[LOCAL_4_5_PN:%.*]] = phi i32 [ [[LOCAL_4_5]], [[OUTER]] ], [ [[TMP2:%.*]], [[INNER]] ]
; CHECK-NEXT: [[LOCAL_3_31:%.*]] = mul i32 [[LOCAL_4_5_PN]], [[DOTUDIV]]
; CHECK-NEXT: [[TMP0:%.*]] = mul nuw nsw i32 [[LOCAL_7_3]], [[DOTUDIV]]
; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[TMP0]], [[LOCAL_3_4]]
; CHECK-NEXT: [[TMP2]] = add i32 [[TMP1]], [[LOCAL_3_31]]
; CHECK-NEXT: [[TMP3]] = add nuw nsw i32 [[LOCAL_7_3]], 1
; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i32 [[LOCAL_7_3]], 4
; CHECK-NEXT: br i1 [[TMP4]], label [[LATCH]], label [[INNER]]
; CHECK: latch:
; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP2]], [[INNER]] ]
; CHECK-NEXT: [[TMP5]] = add nuw nsw i32 [[LOCAL_6_6]], 1
; CHECK-NEXT: [[TMP6:%.*]] = icmp ugt i32 [[LOCAL_6_6]], 276
; CHECK-NEXT: br i1 [[TMP6]], label [[RETURN:%.*]], label [[OUTER]]
; CHECK: return:
; CHECK-NEXT: [[DOTLCSSA_LCSSA:%.*]] = phi i32 [ [[DOTLCSSA]], [[LATCH]] ]
; CHECK-NEXT: ret i32 [[DOTLCSSA_LCSSA]]
;
entry:
br label %outer
outer:
%local_6_6 = phi i32 [ 10, %entry ], [ %5, %latch ]
%local_4_5 = phi i32 [ 56587, %entry ], [ 0, %latch ]
%local_3_4 = phi i32 [ 2, %entry ], [ %5, %latch ]
%.udiv = udiv i32 %local_6_6, 8361
br label %inner
inner:
%local_7_3 = phi i32 [ 2, %outer ], [ %3, %inner ]
%local_4_5.pn = phi i32 [ %local_4_5, %outer ], [ %2, %inner ]
%local_3_31 = mul i32 %local_4_5.pn, %.udiv
%0 = mul i32 %local_7_3, %.udiv
%1 = sub i32 %0, %local_3_4
%2 = add i32 %1, %local_3_31
%3 = add nuw nsw i32 %local_7_3, 1
%4 = icmp ugt i32 %local_7_3, 4
br i1 %4, label %latch, label %inner
latch:
%.lcssa = phi i32 [ %2, %inner ]
%5 = add nuw nsw i32 %local_6_6, 1
%6 = icmp ugt i32 %local_6_6, 276
br i1 %6, label %return, label %outer
return:
%.lcssa.lcssa = phi i32 [ %.lcssa, %latch ]
ret i32 %.lcssa.lcssa
}
|
