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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
## Test mips64:
# RUN: llc -mtriple mips64-linux-gnu -emit-call-site-info -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
## Test mips64el:
# RUN: llc -mtriple mips64el-linux-gnu -emit-call-site-info -start-after=machineverifier -filetype=obj %s -o -| llvm-dwarfdump -| FileCheck %s
## Following code is used for producing this test case.
##
## extern int fn1(long,long,long);
## extern void clobber();
## int fn2(long a) {
## clobber();
## int local = fn1(44, a, a+10);
## if (local > 10)
## return local + 10;
## return local;
## }
## Check that parameters value loaded by instruction ADDiu/DADDiu is
## interpreted correctly.
## Test mips64:
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "fn1"
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg5 A1_64)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg16 S0_64+0)
# CHECK-EMPTY:
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg4 A0_64)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_constu 0x2c)
# CHECK-EMPTY:
# CHECK-NEXT: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg6 A2_64)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg16 S0_64+10)
--- |
; ModuleID = 'mips64.ll'
source_filename = "m64.c"
target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
target triple = "mips64-unknown-linux-gnu"
; Function Attrs: nounwind
define signext i32 @fn2(i64 signext %a) local_unnamed_addr !dbg !14 {
entry:
call void @llvm.dbg.value(metadata i64 %a, metadata !18, metadata !DIExpression()), !dbg !20
tail call void bitcast (void (...)* @clobber to void ()*)(), !dbg !20
%add = add nsw i64 %a, 10, !dbg !20
%call = tail call signext i32 @fn1(i64 signext 44, i64 signext %a, i64 signext %add), !dbg !20
call void @llvm.dbg.value(metadata i32 %call, metadata !19, metadata !DIExpression()), !dbg !20
%cmp = icmp sgt i32 %call, 10, !dbg !24
%add1 = add nsw i32 %call, 10, !dbg !20
%retval.0 = select i1 %cmp, i32 %add1, i32 %call, !dbg !20
ret i32 %retval.0, !dbg !20
}
declare void @clobber(...) local_unnamed_addr
declare !dbg !4 signext i32 @fn1(i64 signext, i64 signext, i64 signext) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!9, !10, !11, !12}
!llvm.ident = !{!13}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "m.c", directory: "/dir")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !8, !8, !8}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
!9 = !{i32 7, !"Dwarf Version", i32 4}
!10 = !{i32 2, !"Debug Info Version", i32 3}
!11 = !{i32 1, !"wchar_size", i32 4}
!12 = !{i32 7, !"PIC Level", i32 1}
!13 = !{!"clang version 11.0.0"}
!14 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 3, type: !15, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !17)
!15 = !DISubroutineType(types: !16)
!16 = !{!7, !8}
!17 = !{!18, !19}
!18 = !DILocalVariable(name: "a", arg: 1, scope: !14, file: !1, line: 3, type: !8)
!19 = !DILocalVariable(name: "local", scope: !14, file: !1, line: 5, type: !7)
!20 = !DILocation(line: 0, scope: !14)
!24 = !DILocation(line: 6, column: 14, scope: !25)
!25 = distinct !DILexicalBlock(scope: !14, file: !1, line: 6, column: 8)
...
---
name: fn2
alignment: 8
liveins:
- { reg: '$a0_64', virtual-reg: '' }
stack:
- { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$ra_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$s0_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:
- { bb: 0, offset: 8, fwdArgRegs: [] }
- { bb: 0, offset: 12, fwdArgRegs:
- { arg: 0, reg: '$a0_64' }
- { arg: 1, reg: '$a1_64' }
- { arg: 2, reg: '$a2_64' } }
body: |
bb.0.entry:
DBG_VALUE $a0_64, $noreg, !18, !DIExpression(), debug-location !20
$sp_64 = DADDiu $sp_64, -16
CFI_INSTRUCTION def_cfa_offset 16
SD killed $ra_64, $sp_64, 8 :: (store (s64) into %stack.0)
SD killed $s0_64, $sp_64, 0 :: (store (s64) into %stack.1)
CFI_INSTRUCTION offset $ra_64, -8
CFI_INSTRUCTION offset $s0_64, -16
DBG_VALUE $s0_64, $noreg, !18, !DIExpression(), debug-location !20
JAL @clobber, csr_n64, implicit-def dead $ra, implicit-def $sp, debug-location !20 {
$s0_64 = OR64 $a0_64, $zero_64
}
renamable $a2_64 = nsw DADDiu renamable $s0_64, 10, debug-location !20
$a0_64 = DADDiu $zero_64, 44, debug-location !20
JAL @fn1, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit killed $a1_64, implicit $a2_64, implicit-def $sp, implicit-def $v0, debug-location !20 {
$a1_64 = OR64 killed $s0_64, $zero_64, debug-location !20
}
DBG_VALUE $v0, $noreg, !19, !DIExpression(), debug-location !20
renamable $at = SLTi renamable $v0, 11, debug-location !20
renamable $v1 = nsw ADDiu renamable $v0, 10, debug-location !20
renamable $v0 = MOVZ_I_I killed renamable $v1, killed renamable $at, killed renamable $v0, debug-location !20
renamable $v0_64 = SLL64_32 killed renamable $v0, debug-location !20
$s0_64 = LD $sp_64, 0, debug-location !20 :: (load (s64) from %stack.1)
$ra_64 = LD $sp_64, 8, debug-location !20 :: (load (s64) from %stack.0)
PseudoReturn64 undef $ra_64, implicit $v0_64, debug-location !20 {
$sp_64 = DADDiu $sp_64, 16
}
|
