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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=indvars < %s | FileCheck %s
; This tests the case where a terminator can be modeled by SCEV,
; because it has a returned attribute.
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
declare i32 @foo(i32)
define void @test(ptr %p) personality ptr undef {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[TMP0:%.*]] = trunc nuw i64 [[INDVARS_IV]] to i32
; CHECK-NEXT: [[RES:%.*]] = invoke i32 @foo(i32 returned [[TMP0]])
; CHECK-NEXT: to label [[LOOP_LATCH]] unwind label [[EXIT:%.*]]
; CHECK: loop.latch:
; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw i64 [[INDVARS_IV]] to i32
; CHECK-NEXT: [[TMP2:%.*]] = call i32 @foo(i32 [[TMP1]])
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1
; CHECK-NEXT: br label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[LP:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
%res = invoke i32 @foo(i32 returned %iv)
to label %loop.latch unwind label %exit
loop.latch:
%ext = zext i32 %iv to i64
%tmp5 = getelementptr inbounds i8, ptr %p, i64 %ext
%iv.next = add nuw i32 %iv, 1
call i32 @foo(i32 %res)
br label %loop
exit:
%lp = landingpad { ptr, i32 }
cleanup
ret void
}
define void @test_critedge(i1 %c, ptr %p) personality ptr undef {
; CHECK-LABEL: @test_critedge(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_INVOKE:%.*]], label [[LOOP_OTHER:%.*]]
; CHECK: loop.invoke:
; CHECK-NEXT: [[TMP0:%.*]] = trunc nuw i64 [[INDVARS_IV]] to i32
; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw i64 [[INDVARS_IV]] to i32
; CHECK-NEXT: [[RES:%.*]] = invoke i32 @foo(i32 returned [[TMP0]])
; CHECK-NEXT: to label [[LOOP_LATCH]] unwind label [[EXIT:%.*]]
; CHECK: loop.other:
; CHECK-NEXT: br label [[LOOP_LATCH]]
; CHECK: loop.latch:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[TMP1]], [[LOOP_INVOKE]] ], [ 0, [[LOOP_OTHER]] ]
; CHECK-NEXT: [[TMP2:%.*]] = call i32 @foo(i32 [[PHI]])
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1
; CHECK-NEXT: br label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[LP:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
br i1 %c, label %loop.invoke, label %loop.other
loop.invoke:
%res = invoke i32 @foo(i32 returned %iv)
to label %loop.latch unwind label %exit
loop.other:
br label %loop.latch
loop.latch:
%phi = phi i32 [ %res, %loop.invoke ], [ 0, %loop.other ]
%ext = zext i32 %iv to i64
%tmp5 = getelementptr inbounds i8, ptr %p, i64 %ext
%iv.next = add nuw i32 %iv, 1
call i32 @foo(i32 %phi)
br label %loop
exit:
%lp = landingpad { ptr, i32 }
cleanup
ret void
}
|
