1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
2 ; RUN: opt -S -passes=deadargelim < %s | FileCheck %s
4 ; Apart from checking if debug metadata is correctly propagated, this also tests whether DW_CC_nocall
5 ; calling convention is added when either return values or arguments are removed.
7 @.str = private constant [1 x i8] zeroinitializer, align 1 ; <ptr> [#uses=1]
9 define ptr @vfs_addname(ptr %name, i32 %len, i32 %hash, i32 %flags) nounwind ssp !dbg !1 {
11 ; CHECK-LABEL: define {{[^@]+}}@vfs_addname
12 ; CHECK-SAME: (ptr [[NAME:%.*]], i32 [[LEN:%.*]], i32 [[HASH:%.*]], i32 [[FLAGS:%.*]]) #[[ATTR0:[0-9]+]] !dbg [[DBG4:![0-9]+]] {
14 ; CHECK-NEXT: #dbg_value(ptr [[NAME]], [[META11:![0-9]+]], !DIExpression(), [[META12:![0-9]+]])
15 ; CHECK-NEXT: #dbg_value(i32 [[LEN]], [[META13:![0-9]+]], !DIExpression(), [[META12]])
16 ; CHECK-NEXT: #dbg_value(i32 [[HASH]], [[META14:![0-9]+]], !DIExpression(), [[META12]])
17 ; CHECK-NEXT: #dbg_value(i32 [[FLAGS]], [[META15:![0-9]+]], !DIExpression(), [[META12]])
18 ; CHECK-NEXT: [[TMP0:%.*]] = call fastcc ptr @add_name_internal(ptr [[NAME]], i32 [[HASH]]) #[[ATTR2:[0-9]+]], !dbg [[DBG16:![0-9]+]]
19 ; CHECK-NEXT: ret ptr [[TMP0]], !dbg [[DBG16]]
22 call void @llvm.dbg.value(metadata ptr %name, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
23 call void @llvm.dbg.value(metadata i32 %len, metadata !10, metadata !DIExpression()), !dbg !DILocation(scope: !1)
24 call void @llvm.dbg.value(metadata i32 %hash, metadata !11, metadata !DIExpression()), !dbg !DILocation(scope: !1)
25 call void @llvm.dbg.value(metadata i32 %flags, metadata !12, metadata !DIExpression()), !dbg !DILocation(scope: !1)
26 %0 = call fastcc ptr @add_name_internal(ptr %name, i32 %len, i32 %hash, i8 zeroext 0, i32 %flags) nounwind, !dbg !13 ; <ptr> [#uses=1]
30 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
32 define internal fastcc ptr @add_name_internal(ptr %name, i32 %len, i32 %hash, i8 zeroext %extra, i32 %flags) noinline nounwind ssp !dbg !16 {
34 ; CHECK-LABEL: define {{[^@]+}}@add_name_internal
35 ; CHECK-SAME: (ptr [[NAME:%.*]], i32 [[HASH:%.*]]) #[[ATTR1:[0-9]+]] !dbg [[DBG18:![0-9]+]] {
37 ; CHECK-NEXT: #dbg_value(ptr [[NAME]], [[META22:![0-9]+]], !DIExpression(), [[META23:![0-9]+]])
38 ; CHECK-NEXT: #dbg_value(i32 poison, [[META24:![0-9]+]], !DIExpression(), [[META23]])
39 ; CHECK-NEXT: #dbg_value(i32 [[HASH]], [[META25:![0-9]+]], !DIExpression(), [[META23]])
40 ; CHECK-NEXT: #dbg_value(i8 poison, [[META26:![0-9]+]], !DIExpression(), [[META23]])
41 ; CHECK-NEXT: #dbg_value(i32 poison, [[META27:![0-9]+]], !DIExpression(), [[META23]])
42 ; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i32 [[HASH]], 0, !dbg [[DBG28:![0-9]+]]
43 ; CHECK-NEXT: br i1 [[TMP0]], label [[BB:%.*]], label [[BB1:%.*]], !dbg [[DBG28]]
45 ; CHECK-NEXT: br label [[BB2:%.*]], !dbg [[DBG30:![0-9]+]]
47 ; CHECK-NEXT: br label [[BB2]], !dbg [[DBG31:![0-9]+]]
49 ; CHECK-NEXT: [[DOT0:%.*]] = phi ptr [ @.str, [[BB]] ], [ [[NAME]], [[BB1]] ]
50 ; CHECK-NEXT: ret ptr [[DOT0]], !dbg [[DBG31]]
53 call void @llvm.dbg.value(metadata ptr %name, metadata !15, metadata !DIExpression()), !dbg !DILocation(scope: !16)
54 call void @llvm.dbg.value(metadata i32 %len, metadata !20, metadata !DIExpression()), !dbg !DILocation(scope: !16)
55 call void @llvm.dbg.value(metadata i32 %hash, metadata !21, metadata !DIExpression()), !dbg !DILocation(scope: !16)
56 call void @llvm.dbg.value(metadata i8 %extra, metadata !22, metadata !DIExpression()), !dbg !DILocation(scope: !16)
57 call void @llvm.dbg.value(metadata i32 %flags, metadata !23, metadata !DIExpression()), !dbg !DILocation(scope: !16)
58 %0 = icmp eq i32 %hash, 0, !dbg !24 ; <i1> [#uses=1]
59 br i1 %0, label %bb, label %bb1, !dbg !24
62 br label %bb2, !dbg !26
65 br label %bb2, !dbg !27
67 bb2: ; preds = %bb1, %bb
68 %.0 = phi ptr [ @.str, %bb ], [ %name, %bb1 ] ; <ptr> [#uses=1]
72 declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
74 ; CHECK: attributes #0 = { nounwind ssp }
75 ; CHECK: attributes #1 = { noinline nounwind ssp }
78 !llvm.module.flags = !{!30}
79 !0 = !DILocalVariable(name: "name", line: 8, arg: 1, scope: !1, file: !2, type: !6)
80 !1 = distinct !DISubprogram(name: "vfs_addname", linkageName: "vfs_addname", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !28, scope: !2, type: !4)
81 !2 = !DIFile(filename: "tail.c", directory: "/Users/echeng/LLVM/radars/r7927803/")
82 !3 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build 9999)", isOptimized: true, emissionKind: FullDebug, file: !28, enums: !29, retainedTypes: !29)
83 !4 = !DISubroutineType(types: !5)
84 !5 = !{!6, !6, !9, !9, !9}
85 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !28, scope: !2, baseType: !7)
86 !7 = !DIDerivedType(tag: DW_TAG_const_type, size: 8, align: 8, file: !28, scope: !2, baseType: !8)
87 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
88 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
89 !10 = !DILocalVariable(name: "len", line: 9, arg: 2, scope: !1, file: !2, type: !9)
90 !11 = !DILocalVariable(name: "hash", line: 10, arg: 3, scope: !1, file: !2, type: !9)
91 !12 = !DILocalVariable(name: "flags", line: 11, arg: 4, scope: !1, file: !2, type: !9)
92 !13 = !DILocation(line: 13, scope: !14)
93 !14 = distinct !DILexicalBlock(line: 12, column: 0, file: !28, scope: !1)
94 !15 = !DILocalVariable(name: "name", line: 17, arg: 1, scope: !16, file: !2, type: !6)
95 ; CHECK: !DISubprogram(name: "add_name_internal"
96 !16 = distinct !DISubprogram(name: "add_name_internal", linkageName: "add_name_internal", line: 22, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !28, scope: !2, type: !17)
97 !17 = !DISubroutineType(types: !18)
98 !18 = !{!6, !6, !9, !9, !19, !9}
99 !19 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
100 !20 = !DILocalVariable(name: "len", line: 18, arg: 2, scope: !16, file: !2, type: !9)
101 !21 = !DILocalVariable(name: "hash", line: 19, arg: 3, scope: !16, file: !2, type: !9)
102 !22 = !DILocalVariable(name: "extra", line: 20, arg: 4, scope: !16, file: !2, type: !19)
103 !23 = !DILocalVariable(name: "flags", line: 21, arg: 5, scope: !16, file: !2, type: !9)
104 !24 = !DILocation(line: 23, scope: !25)
105 !25 = distinct !DILexicalBlock(line: 22, column: 0, file: !28, scope: !16)
106 !26 = !DILocation(line: 24, scope: !25)
107 !27 = !DILocation(line: 26, scope: !25)
108 !28 = !DIFile(filename: "tail.c", directory: "/Users/echeng/LLVM/radars/r7927803/")
110 !30 = !{i32 1, !"Debug Info Version", i32 3}