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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; PR32952: Don't erroneously consider congruent two phi nodes which
; have the same arguments but different incoming edges.
; RUN: opt -passes=newgvn -S %s | FileCheck %s
@a = common global i16 0, align 2
@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
define i32 @tinkywinky() {
; CHECK-LABEL: define i32 @tinkywinky() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr @a, align 2
; CHECK-NEXT: [[CONV:%.*]] = sext i16 [[TMP0]] to i32
; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[CONV]], -1
; CHECK-NEXT: [[CONV1:%.*]] = trunc i32 [[NEG]] to i16
; CHECK-NEXT: [[CONV3:%.*]] = zext i16 [[CONV1]] to i32
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV3]]
; CHECK-NEXT: br i1 [[CMP]], label [[TINKY:%.*]], label [[WINKY:%.*]]
; CHECK: tinky:
; CHECK-NEXT: store i16 2, ptr @a, align 2
; CHECK-NEXT: br label [[PATATINO:%.*]]
; CHECK: winky:
; CHECK-NEXT: br label [[PATATINO]]
; CHECK: patatino:
; CHECK-NEXT: [[MEH:%.*]] = phi i16 [ [[TMP0]], [[WINKY]] ], [ [[CONV1]], [[TINKY]] ]
; CHECK-NEXT: [[BANANA:%.*]] = phi i16 [ [[TMP0]], [[TINKY]] ], [ [[CONV1]], [[WINKY]] ]
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: [[PROMOTED:%.*]] = zext i16 [[BANANA]] to i32
; CHECK-NEXT: [[OTHER:%.*]] = zext i16 [[MEH]] to i32
; CHECK-NEXT: [[FIRST:%.*]] = tail call i32 (ptr, ...) @printf(ptr @.str, i32 [[PROMOTED]])
; CHECK-NEXT: [[SECOND:%.*]] = tail call i32 (ptr, ...) @printf(ptr @.str, i32 [[OTHER]])
; CHECK-NEXT: ret i32 0
;
entry:
%0 = load i16, ptr @a, align 2
%conv = sext i16 %0 to i32
%neg = xor i32 %conv, -1
%conv1 = trunc i32 %neg to i16
%conv3 = zext i16 %conv1 to i32
%cmp = icmp slt i32 %conv, %conv3
br i1 %cmp, label %tinky, label %winky
tinky:
store i16 2, ptr @a, align 2
br label %patatino
winky:
br label %patatino
patatino:
%meh = phi i16 [ %0, %winky ], [ %conv1, %tinky ]
%banana = phi i16 [ %0, %tinky ], [ %conv1, %winky ]
br label %end
end:
%promoted = zext i16 %banana to i32
%other = zext i16 %meh to i32
%first = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %promoted)
%second = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %other)
ret i32 0
}
declare i32 @printf(ptr, ...)
|
