1 ; RUN: llvm-link %s %S/Inputs/subprogram-linkonce-weak.ll -S -o %t1 2 ; RUN: FileCheck %s -check-prefix=LW -check-prefix=CHECK <%t1 3 ; RUN: llvm-link %S/Inputs/subprogram-linkonce-weak.ll %s -S -o %t2 4 ; RUN: FileCheck %s -check-prefix=WL -check-prefix=CHECK <%t2 5 6 ; This testcase tests the following flow: 7 ; - File A defines a linkonce version of @foo which has inlined into @bar. 8 ; - File B defines a weak version of @foo (different definition). 9 ; - Linkage rules state File B version of @foo wins. 10 ; - @bar still has inlined debug info related to the linkonce @foo. 11 ; 12 ; This should fix PR22792, although the testcase was hand-written. There's a 13 ; RUN line with a crasher for llc at the end with checks for the DWARF output. 14 15 ; The LW prefix means linkonce (this file) first, then weak (the other file). 16 ; The WL prefix means weak (the other file) first, then linkonce (this file). 17 18 ; We'll see @bar before @foo if this file is first. 19 ; LW-LABEL: define i32 @bar( 20 ; LW: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]] 21 ; LW: ret i32 %sum, !dbg ![[BARRET:[0-9]+]] 22 ; LW-LABEL: define weak i32 @foo( 23 ; LW: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]] 24 ; LW: ret i32 %sum, !dbg ![[FOORET:[0-9]+]] 25 26 ; We'll see @foo before @bar if this file is second. 27 ; WL-LABEL: define weak i32 @foo( 28 ; WL: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]] 29 ; WL: ret i32 %sum, !dbg ![[FOORET:[0-9]+]] 30 ; WL-LABEL: define i32 @bar( 31 ; WL: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]] 32 ; WL: ret i32 %sum, !dbg ![[BARRET:[0-9]+]] 33 34 define i32 @bar(i32 %a, i32 %b) { 35 entry: 36 %sum = add i32 %a, %b, !dbg !MDLocation(line: 2, scope: !4, 37 inlinedAt: !MDLocation(line: 12, scope: !3)) 38 ret i32 %sum, !dbg !MDLocation(line: 13, scope: !3) 39 } 40 41 define linkonce i32 @foo(i32 %a, i32 %b) { 42 entry: 43 %sum = add i32 %a, %b, !dbg !MDLocation(line: 2, scope: !4) 44 ret i32 %sum, !dbg !MDLocation(line: 3, scope: !4) 45 } 46 47 !llvm.module.flags = !{!0} 48 !0 = !{i32 2, !"Debug Info Version", i32 3} 49 50 ; CHECK-LABEL: !llvm.dbg.cu = 51 ; LW-SAME: !{![[LCU:[0-9]+]], ![[WCU:[0-9]+]]} 52 ; WL-SAME: !{![[WCU:[0-9]+]], ![[LCU:[0-9]+]]} 53 !llvm.dbg.cu = !{!1} 54 55 ; LW: ![[LCU]] = !MDCompileUnit({{.*}} subprograms: ![[LSPs:[0-9]+]] 56 ; LW: ![[LSPs]] = !{![[BARSP:[0-9]+]], ![[FOOSP:[0-9]+]]} 57 ; LW: ![[BARSP]] = !MDSubprogram(name: "bar", 58 ; LW-SAME: function: i32 (i32, i32)* @bar 59 ; LW: ![[FOOSP]] = {{.*}}!MDSubprogram(name: "foo", 60 ; LW-NOT: function: 61 ; LW-SAME: ){{$}} 62 ; LW: ![[WCU]] = !MDCompileUnit({{.*}} subprograms: ![[WSPs:[0-9]+]] 63 ; LW: ![[WSPs]] = !{![[WEAKFOOSP:[0-9]+]]} 64 ; LW: ![[WEAKFOOSP]] = !MDSubprogram(name: "foo", 65 ; LW-SAME: function: i32 (i32, i32)* @foo 66 ; LW: ![[FOOINBAR]] = !MDLocation(line: 2, scope: ![[FOOSP]], inlinedAt: ![[BARIA:[0-9]+]]) 67 ; LW: ![[BARIA]] = !MDLocation(line: 12, scope: ![[BARSP]]) 68 ; LW: ![[BARRET]] = !MDLocation(line: 13, scope: ![[BARSP]]) 69 ; LW: ![[FOOCALL]] = !MDLocation(line: 52, scope: ![[WEAKFOOSP]]) 70 ; LW: ![[FOORET]] = !MDLocation(line: 53, scope: ![[WEAKFOOSP]]) 71 72 ; Same as above, but reordered. 73 ; WL: ![[WCU]] = !MDCompileUnit({{.*}} subprograms: ![[WSPs:[0-9]+]] 74 ; WL: ![[WSPs]] = !{![[WEAKFOOSP:[0-9]+]]} 75 ; WL: ![[WEAKFOOSP]] = !MDSubprogram(name: "foo", 76 ; WL-SAME: function: i32 (i32, i32)* @foo 77 ; WL: ![[LCU]] = !MDCompileUnit({{.*}} subprograms: ![[LSPs:[0-9]+]] 78 ; WL: ![[LSPs]] = !{![[BARSP:[0-9]+]], ![[FOOSP:[0-9]+]]} 79 ; WL: ![[BARSP]] = !MDSubprogram(name: "bar", 80 ; WL-SAME: function: i32 (i32, i32)* @bar 81 ; WL: ![[FOOSP]] = {{.*}}!MDSubprogram(name: "foo", 82 ; Note, for symmetry, this should be "NOT: function:" and "SAME: ){{$}}". 83 ; WL-SAME: function: i32 (i32, i32)* @foo 84 ; WL: ![[FOOCALL]] = !MDLocation(line: 52, scope: ![[WEAKFOOSP]]) 85 ; WL: ![[FOORET]] = !MDLocation(line: 53, scope: ![[WEAKFOOSP]]) 86 ; WL: ![[FOOINBAR]] = !MDLocation(line: 2, scope: ![[FOOSP]], inlinedAt: ![[BARIA:[0-9]+]]) 87 ; WL: ![[BARIA]] = !MDLocation(line: 12, scope: ![[BARSP]]) 88 ; WL: ![[BARRET]] = !MDLocation(line: 13, scope: ![[BARSP]]) 89 90 !1 = !MDCompileUnit(language: DW_LANG_C99, file: !2, subprograms: !{!3, !4}, emissionKind: 1) 91 !2 = !MDFile(filename: "bar.c", directory: "/path/to/dir") 92 !3 = !MDSubprogram(file: !2, scope: !2, line: 11, name: "bar", function: i32 (i32, i32)* @bar, type: !5) 93 !4 = !MDSubprogram(file: !2, scope: !2, line: 1, name: "foo", function: i32 (i32, i32)* @foo, type: !5) 94 !5 = !MDSubroutineType(types: !{}) 95 96 ; Crasher for llc. 97 ; REQUIRES: object-emission 98 ; RUN: %llc_dwarf -filetype=obj -O0 %t1 -o %t1.o 99 ; RUN: llvm-dwarfdump %t1.o -debug-dump=all | FileCheck %s -check-prefix=DWLW -check-prefix=DW 100 ; RUN: %llc_dwarf -filetype=obj -O0 %t2 -o %t2.o 101 ; RUN: llvm-dwarfdump %t2.o -debug-dump=all | FileCheck %s -check-prefix=DWWL -check-prefix=DW 102 ; Check that the debug info for the discarded linkonce version of @foo doesn't 103 ; reference any code, and that the other subprograms look correct. 104 105 ; DW-LABEL: .debug_info contents: 106 ; DWLW: DW_TAG_compile_unit 107 ; DWLW: DW_AT_name {{.*}}"bar.c" 108 ; DWLW: DW_TAG_subprogram 109 ; DWLW-NOT: DW_AT_low_pc 110 ; DWLW-NOT: DW_AT_high_pc 111 ; DWLW: DW_AT_name {{.*}}foo 112 ; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 113 ; DWLW: DW_AT_decl_line {{.*}}(1) 114 ; DWLW: DW_TAG_subprogram 115 ; DWLW: DW_AT_low_pc 116 ; DWLW: DW_AT_high_pc 117 ; DWLW: DW_AT_name {{.*}}bar 118 ; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 119 ; DWLW: DW_AT_decl_line {{.*}}(11) 120 121 ; DWLW: DW_TAG_inlined_subroutine 122 ; DWLW: DW_AT_abstract_origin 123 ; DWLW: DW_TAG_compile_unit 124 ; DWLW: DW_AT_name {{.*}}"foo.c" 125 ; DWLW: DW_TAG_subprogram 126 ; DWLW: DW_AT_low_pc 127 ; DWLW: DW_AT_high_pc 128 ; DWLW: DW_AT_name {{.*}}foo 129 ; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c" 130 ; DWLW: DW_AT_decl_line {{.*}}(51) 131 132 ; The DWARF output is already symmetric (just reordered). 133 ; DWWL: DW_TAG_compile_unit 134 ; DWWL: DW_AT_name {{.*}}"foo.c" 135 ; DWWL: DW_TAG_subprogram 136 ; DWWL: DW_AT_low_pc 137 ; DWWL: DW_AT_high_pc 138 ; DWWL: DW_AT_name {{.*}}foo 139 ; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c" 140 ; DWWL: DW_AT_decl_line {{.*}}(51) 141 ; DWWL: DW_TAG_compile_unit 142 ; DWWL: DW_AT_name {{.*}}"bar.c" 143 ; DWWL: DW_TAG_subprogram 144 ; DWWL-NOT: DW_AT_low_pc 145 ; DWWL-NOT: DW_AT_high_pc 146 ; DWWL: DW_AT_name {{.*}}foo 147 ; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 148 ; DWWL: DW_AT_decl_line {{.*}}(1) 149 ; DWWL: DW_TAG_subprogram 150 ; DWWL: DW_AT_low_pc 151 ; DWWL: DW_AT_high_pc 152 ; DWWL: DW_AT_name {{.*}}bar 153 ; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 154 ; DWWL: DW_AT_decl_line {{.*}}(11) 155 ; DWWL: DW_TAG_inlined_subroutine 156 ; DWWL: DW_AT_abstract_origin 157 158 ; DW-LABEL: .debug_line contents: 159 ; Check that we have the right things in the line table as well. 160 161 ; DWLW-LABEL: file_names[{{ *}}1]{{.*}} bar.c 162 ; DWLW: 2 0 1 0 0 is_stmt prologue_end 163 ; DWLW-LABEL: file_names[{{ *}}1]{{.*}} foo.c 164 ; DWLW: 52 0 1 0 0 is_stmt prologue_end 165 ; DWLW-NOT: prologue_end 166 167 ; DWWL-LABEL: file_names[{{ *}}1]{{.*}} foo.c 168 ; DWWL: 52 0 1 0 0 is_stmt prologue_end 169 ; DWWL-LABEL: file_names[{{ *}}1]{{.*}} bar.c 170 ; DWWL: 2 0 1 0 0 is_stmt prologue_end 171 ; DWWL-NOT: prologue_end 172
