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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=lower-constant-intrinsics -S < %s | FileCheck %s
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
declare dso_local noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr allocsize(0)
declare i64 @llvm.objectsize.i64.p0(ptr, i1 immarg, i1 immarg, i1 immarg)
@buffer = dso_local global [4 x i8] zeroinitializer, align 1
define dso_local i64 @pick_max(i32 noundef %n) local_unnamed_addr {
; CHECK-LABEL: @pick_max(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[COND]], label [[IF_ELSE:%.*]], label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[MALLOCED:%.*]] = call noalias dereferenceable_or_null(8) ptr @malloc(i64 noundef 8)
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[MALLOCED]], [[IF_ELSE]] ], [ @buffer, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i64 8
;
entry:
%cond = icmp eq i32 %n, 0
br i1 %cond, label %if.else, label %if.end
if.else:
%malloced = call noalias dereferenceable_or_null(8) ptr @malloc(i64 noundef 8)
br label %if.end
if.end:
%p = phi ptr [ %malloced, %if.else ], [ @buffer, %entry ]
%size = call i64 @llvm.objectsize.i64.p0(ptr %p, i1 false, i1 true, i1 false)
ret i64 %size
}
define dso_local i64 @pick_min(i32 noundef %n) local_unnamed_addr {
; CHECK-LABEL: @pick_min(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[COND]], label [[IF_ELSE:%.*]], label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[MALLOCED:%.*]] = call noalias dereferenceable_or_null(8) ptr @malloc(i64 noundef 8)
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[MALLOCED]], [[IF_ELSE]] ], [ @buffer, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i64 4
;
entry:
%cond = icmp eq i32 %n, 0
br i1 %cond, label %if.else, label %if.end
if.else:
%malloced = call noalias dereferenceable_or_null(8) ptr @malloc(i64 noundef 8)
br label %if.end
if.end:
%p = phi ptr [ %malloced, %if.else ], [ @buffer, %entry ]
%size = call i64 @llvm.objectsize.i64.p0(ptr %p, i1 true, i1 true, i1 false)
ret i64 %size
}
define i64 @pick_max_same(i32 %n) {
; CHECK-LABEL: @pick_max_same(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[BUFFER:%.*]] = alloca i8, i64 20, align 1
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[COND]], label [[IF_ELSE:%.*]], label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[OFFSETED:%.*]] = getelementptr i8, ptr [[BUFFER]], i64 10
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[OFFSETED]], [[IF_ELSE]] ], [ [[BUFFER]], [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i64 20
;
entry:
%buffer = alloca i8, i64 20
%cond = icmp eq i32 %n, 0
br i1 %cond, label %if.else, label %if.end
if.else:
%offseted = getelementptr i8, ptr %buffer, i64 10
br label %if.end
if.end:
%p = phi ptr [ %offseted, %if.else ], [ %buffer, %entry ]
%size = call i64 @llvm.objectsize.i64.p0(ptr %p, i1 false, i1 true, i1 false)
ret i64 %size
}
define i64 @pick_min_same(i32 %n) {
; CHECK-LABEL: @pick_min_same(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[BUFFER:%.*]] = alloca i8, i64 20, align 1
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[COND]], label [[IF_ELSE:%.*]], label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[OFFSETED:%.*]] = getelementptr i8, ptr [[BUFFER]], i64 10
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[OFFSETED]], [[IF_ELSE]] ], [ [[BUFFER]], [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i64 10
;
entry:
%buffer = alloca i8, i64 20
%cond = icmp eq i32 %n, 0
br i1 %cond, label %if.else, label %if.end
if.else:
%offseted = getelementptr i8, ptr %buffer, i64 10
br label %if.end
if.end:
%p = phi ptr [ %offseted, %if.else ], [ %buffer, %entry ]
%size = call i64 @llvm.objectsize.i64.p0(ptr %p, i1 true, i1 true, i1 false)
ret i64 %size
}
|
