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
|
; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=basic-blocks --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
; RUN: FileCheck %s < %t
; Check that no invalid reduction is produced. Remaining unreachable
; blocks can leave instructions that dominate uses. When %bb3 was made
; unreachable it produced this verifier error:
; Instruction does not dominate all uses!
; %i4 = icmp eq i32 0, 0
; %i6 = select i1 %i4, i1 false, i1 false
; CHECK: define void @func() {
; CHECK-NEXT: bb:
; CHECK-NEXT: br label %bb1
; CHECK: bb1:
; CHECK-NEXT: label %bb3
; CHECK: bb2:
; CHECK-NEXT: br i1 false, label %bb1, label %bb2
; CHECK: bb3:
; CHECK-NEXT: %i = phi i32 [ 0, %bb1 ]
; CHECK: %i4 = icmp eq i32 0, 0
; CHECK-NEXT: br label %bb5
; CHECK: bb5:
; CHECK-NEXT: %i6 = select i1 %i4, i1 false, i1 false
; CHECK-NEXT: store i32 0
; CHECK-NEXT: ret void
define void @func() {
bb:
br label %bb1
bb1: ; preds = %bb2, %bb
br label %bb3
bb2: ; preds = %bb2
br i1 false, label %bb1, label %bb2
bb3: ; preds = %bb1
%i = phi i32 [ 0, %bb1 ]
%i4 = icmp eq i32 0, 0
br label %bb5
bb5: ; preds = %bb3
%i6 = select i1 %i4, i1 false, i1 false
; CHECK-INTERESTINGNESS: store
store i32 0, ptr undef, align 4
ret void
}
|
