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; REQUIRES: object-emission 6; 7; Bug 47131 8; XFAIL: target=sparc{{.*}} 9; 10; This testcase tests the following flow: 11; - File A defines a linkonce version of @foo which has inlined into @bar. 12; - File B defines a weak version of @foo (different definition). 13; - Linkage rules state File B version of @foo wins. 14; - @bar still has inlined debug info related to the linkonce @foo. 15; 16; This should fix PR22792, although the testcase was hand-written. There's a 17; RUN line with a crasher for llc at the end with checks for the DWARF output. 18 19; The LW prefix means linkonce (this file) first, then weak (the other file). 20; The WL prefix means weak (the other file) first, then linkonce (this file). 21 22; We'll see @bar before @foo if this file is first. 23; LW: define i32 @bar({{.*}} !dbg ![[BARSP:[0-9]+]] 24; LW: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]] 25; LW: ret i32 %sum, !dbg ![[BARRET:[0-9]+]] 26; LW: define weak i32 @foo({{.*}} !dbg ![[WEAKFOOSP:[0-9]+]] 27; LW: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]] 28; LW: ret i32 %sum, !dbg ![[FOORET:[0-9]+]] 29 30; We'll see @foo before @bar if this file is second. 31; WL: define weak i32 @foo({{.*}} !dbg ![[WEAKFOOSP:[0-9]+]] 32; WL: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]] 33; WL: ret i32 %sum, !dbg ![[FOORET:[0-9]+]] 34; WL: define i32 @bar({{.*}} !dbg ![[BARSP:[0-9]+]] 35; WL: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]] 36; WL: ret i32 %sum, !dbg ![[BARRET:[0-9]+]] 37 38define i32 @bar(i32 %a, i32 %b) !dbg !3 { 39entry: 40 %sum = add i32 %a, %b, !dbg !DILocation(line: 2, scope: !4, 41 inlinedAt: !DILocation(line: 12, scope: !3)) 42 ret i32 %sum, !dbg !DILocation(line: 13, scope: !3) 43} 44 45define linkonce i32 @foo(i32 %a, i32 %b) !dbg !4 { 46entry: 47 %sum = add i32 %a, %b, !dbg !DILocation(line: 2, scope: !4) 48 ret i32 %sum, !dbg !DILocation(line: 3, scope: !4) 49} 50 51!llvm.module.flags = !{!0} 52!0 = !{i32 2, !"Debug Info Version", i32 3} 53 54; CHECK-LABEL: !llvm.dbg.cu = 55; LW-SAME: !{![[LCU:[0-9]+]], ![[WCU:[0-9]+]]} 56; WL-SAME: !{![[WCU:[0-9]+]], ![[LCU:[0-9]+]]} 57!llvm.dbg.cu = !{!1} 58 59; LW: ![[LCU]] = distinct !DICompileUnit( 60; LW: ![[WCU]] = distinct !DICompileUnit( 61; LW: ![[BARSP]] = distinct !DISubprogram(name: "bar",{{.*}} unit: ![[LCU]] 62; LW: ![[FOOINBAR]] = !DILocation(line: 2, scope: ![[FOOSP:.*]], inlinedAt: ![[BARIA:[0-9]+]]) 63; LW: ![[FOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[LCU]] 64; LW: ![[BARIA]] = !DILocation(line: 12, scope: ![[BARSP]]) 65; LW: ![[BARRET]] = !DILocation(line: 13, scope: ![[BARSP]]) 66; LW: ![[WEAKFOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[WCU]] 67; LW: ![[FOOCALL]] = !DILocation(line: 52, scope: ![[WEAKFOOSP]]) 68; LW: ![[FOORET]] = !DILocation(line: 53, scope: ![[WEAKFOOSP]]) 69 70; Same as above, but reordered. 71; WL: ![[WCU]] = distinct !DICompileUnit( 72; WL: ![[LCU]] = distinct !DICompileUnit( 73; WL: ![[WEAKFOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[WCU]] 74; WL: ![[FOOCALL]] = !DILocation(line: 52, scope: ![[WEAKFOOSP]]) 75; WL: ![[FOORET]] = !DILocation(line: 53, scope: ![[WEAKFOOSP]]) 76; WL: ![[BARSP]] = distinct !DISubprogram(name: "bar",{{.*}} unit: ![[LCU]] 77; WL: ![[FOOINBAR]] = !DILocation(line: 2, scope: ![[FOOSP:.*]], inlinedAt: ![[BARIA:[0-9]+]]) 78; WL: ![[FOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[LCU]] 79; WL: ![[BARIA]] = !DILocation(line: 12, scope: ![[BARSP]]) 80; WL: ![[BARRET]] = !DILocation(line: 13, scope: ![[BARSP]]) 81 82!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, emissionKind: FullDebug) 83!2 = !DIFile(filename: "bar.c", directory: "/path/to/dir") 84!3 = distinct !DISubprogram(file: !2, scope: !2, line: 11, name: "bar", type: !5, unit: !1) 85!4 = distinct !DISubprogram(file: !2, scope: !2, line: 1, name: "foo", type: !5, unit: !1) 86!5 = !DISubroutineType(types: !{}) 87 88; Crasher for llc. 89; RUN: %llc_dwarf -filetype=obj -O0 %t1 -o %t1.o 90; RUN: llvm-dwarfdump %t1.o --all | FileCheck %s -check-prefix=DWLW -check-prefix=DW 91; RUN: %llc_dwarf -filetype=obj -O0 %t2 -o %t2.o 92; RUN: llvm-dwarfdump %t2.o --all | FileCheck %s -check-prefix=DWWL -check-prefix=DW 93; Check that the debug info for the discarded linkonce version of @foo doesn't 94; reference any code, and that the other subprograms look correct. 95 96; DW-LABEL: .debug_info contents: 97; DWLW: DW_TAG_compile_unit 98; DWLW: DW_AT_name {{.*}}"bar.c" 99; DWLW: DW_TAG_subprogram 100; DWLW-NOT: DW_AT_low_pc 101; DWLW-NOT: DW_AT_high_pc 102; DWLW: DW_AT_name {{.*}}foo 103; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 104; DWLW: DW_AT_decl_line {{.*}}(1) 105; DWLW: DW_TAG_subprogram 106; DWLW: DW_AT_low_pc 107; DWLW: DW_AT_high_pc 108; DWLW: DW_AT_name {{.*}}bar 109; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 110; DWLW: DW_AT_decl_line {{.*}}(11) 111 112; DWLW: DW_TAG_inlined_subroutine 113; DWLW: DW_AT_abstract_origin 114; DWLW: DW_TAG_compile_unit 115; DWLW: DW_AT_name {{.*}}"foo.c" 116; DWLW: DW_TAG_subprogram 117; DWLW: DW_AT_low_pc 118; DWLW: DW_AT_high_pc 119; DWLW: DW_AT_name {{.*}}foo 120; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c" 121; DWLW: DW_AT_decl_line {{.*}}(51) 122 123; The DWARF output is already symmetric (just reordered). 124; DWWL: DW_TAG_compile_unit 125; DWWL: DW_AT_name {{.*}}"foo.c" 126; DWWL: DW_TAG_subprogram 127; DWWL: DW_AT_low_pc 128; DWWL: DW_AT_high_pc 129; DWWL: DW_AT_name {{.*}}foo 130; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c" 131; DWWL: DW_AT_decl_line {{.*}}(51) 132; DWWL: DW_TAG_compile_unit 133; DWWL: DW_AT_name {{.*}}"bar.c" 134; DWWL: DW_TAG_subprogram 135; DWWL-NOT: DW_AT_low_pc 136; DWWL-NOT: DW_AT_high_pc 137; DWWL: DW_AT_name {{.*}}foo 138; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 139; DWWL: DW_AT_decl_line {{.*}}(1) 140; DWWL: DW_TAG_subprogram 141; DWWL: DW_AT_low_pc 142; DWWL: DW_AT_high_pc 143; DWWL: DW_AT_name {{.*}}bar 144; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c" 145; DWWL: DW_AT_decl_line {{.*}}(11) 146; DWWL: DW_TAG_inlined_subroutine 147; DWWL: DW_AT_abstract_origin 148 149; DW-LABEL: .debug_line contents: 150; Check that we have the right things in the line table as well. 151 152; DWLW-LABEL: file_names[ 1]: 153; DWLW-NEXT: name: "bar.c" 154; DWLW: 2 0 1 0 0 0 is_stmt prologue_end 155; DWLW-LABEL: file_names[ 1]: 156; DWLW-NEXT: name: "foo.c" 157; DWLW: 52 0 1 0 0 0 is_stmt prologue_end 158; DWLW-NOT: prologue_end 159 160; DWWL-LABEL: file_names[ 1]: 161; DWWL-NEXT: name: "foo.c" 162; DWWL: 52 0 1 0 0 0 is_stmt prologue_end 163; DWWL-LABEL: file_names[ 1]: 164; DWWL-NEXT: name: "bar.c" 165; DWWL: 2 0 1 0 0 0 is_stmt prologue_end 166; DWWL-NOT: prologue_end 167