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
|
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
target triple = "i686-pc-windows-msvc18.0.0"
%struct.T = type { i64, [3 x i32] }
; Function Attrs: nounwind optsize
define void @f(i8* %p, i8* %q, i32* inalloca nocapture %unused) #0 {
entry:
%g = alloca %struct.T, align 8
%r = alloca i32, align 8
store i32 0, i32* %r, align 4
call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %p, i8* align 8 %q, i32 24, i1 false)
br label %while.body
while.body: ; preds = %while.body, %entry
%load = load i32, i32* %r, align 4
%dec = add nsw i32 %load, -1
store i32 %dec, i32* %r, align 4
call void @g(%struct.T* %g)
%tobool = icmp eq i32 %dec, 0
br i1 %tobool, label %while.end, label %while.body
while.end: ; preds = %while.body
ret void
}
define void @f_pgso(i8* %p, i8* %q, i32* inalloca nocapture %unused) !prof !14 {
entry:
%g = alloca %struct.T, align 8
%r = alloca i32, align 8
store i32 0, i32* %r, align 4
call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %p, i8* align 8 %q, i32 24, i1 false)
br label %while.body
while.body: ; preds = %while.body, %entry
%load = load i32, i32* %r, align 4
%dec = add nsw i32 %load, -1
store i32 %dec, i32* %r, align 4
call void @g(%struct.T* %g)
%tobool = icmp eq i32 %dec, 0
br i1 %tobool, label %while.end, label %while.body
while.end: ; preds = %while.body
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) #1
declare void @g(%struct.T*)
; CHECK-LABEL: _f:
; CHECK: pushl %ebp
; CHECK: movl %esp, %ebp
; CHECK: andl $-8, %esp
; CHECK-NOT: movl %esp, %esi
; CHECK: rep;movsl
; CHECK: leal 8(%esp), %esi
; CHECK: decl (%esp)
; CHECK: setne %[[NE_REG:.*]]
; CHECK: pushl %esi
; CHECK: calll _g
; CHECK: addl $4, %esp
; CHECK: testb %[[NE_REG]], %[[NE_REG]]
; CHECK: jne
; CHECK-LABEL: _f_pgso:
; CHECK: pushl %ebp
; CHECK: movl %esp, %ebp
; CHECK: andl $-8, %esp
; CHECK-NOT: movl %esp, %esi
; CHECK: rep;movsl
; CHECK: leal 8(%esp), %esi
; CHECK: decl (%esp)
; CHECK: setne %[[NE_REG:.*]]
; CHECK: pushl %esi
; CHECK: calll _g
; CHECK: addl $4, %esp
; CHECK: testb %[[NE_REG]], %[[NE_REG]]
; CHECK: jne
attributes #0 = { nounwind optsize }
attributes #1 = { argmemonly nounwind }
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"InstrProf"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 3}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13}
!11 = !{i32 10000, i64 100, i32 1}
!12 = !{i32 999000, i64 100, i32 1}
!13 = !{i32 999999, i64 1, i32 2}
!14 = !{!"function_entry_count", i64 0}
|
