forked from OSchip/llvm-project
161 lines
6.9 KiB
LLVM
161 lines
6.9 KiB
LLVM
; RUN: llvm-link %s %S/Inputs/subprogram-linkonce-weak.ll -S -o %t1
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; RUN: FileCheck %s -check-prefix=LW -check-prefix=CHECK <%t1
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; RUN: llvm-link %S/Inputs/subprogram-linkonce-weak.ll %s -S -o %t2
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; RUN: FileCheck %s -check-prefix=WL -check-prefix=CHECK <%t2
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; REQUIRES: default_triple
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; This testcase tests the following flow:
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; - File A defines a linkonce version of @foo which has inlined into @bar.
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; - File B defines a weak version of @foo (different definition).
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; - Linkage rules state File B version of @foo wins.
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; - @bar still has inlined debug info related to the linkonce @foo.
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;
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; This should fix PR22792, although the testcase was hand-written. There's a
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; RUN line with a crasher for llc at the end with checks for the DWARF output.
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; The LW prefix means linkonce (this file) first, then weak (the other file).
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; The WL prefix means weak (the other file) first, then linkonce (this file).
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; We'll see @bar before @foo if this file is first.
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; LW: define i32 @bar({{.*}} !dbg ![[BARSP:[0-9]+]]
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; LW: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]]
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; LW: ret i32 %sum, !dbg ![[BARRET:[0-9]+]]
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; LW: define weak i32 @foo({{.*}} !dbg ![[WEAKFOOSP:[0-9]+]]
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; LW: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]]
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; LW: ret i32 %sum, !dbg ![[FOORET:[0-9]+]]
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; We'll see @foo before @bar if this file is second.
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; WL: define weak i32 @foo({{.*}} !dbg ![[WEAKFOOSP:[0-9]+]]
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; WL: %sum = call i32 @fastadd(i32 %a, i32 %b), !dbg ![[FOOCALL:[0-9]+]]
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; WL: ret i32 %sum, !dbg ![[FOORET:[0-9]+]]
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; WL: define i32 @bar({{.*}} !dbg ![[BARSP:[0-9]+]]
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; WL: %sum = add i32 %a, %b, !dbg ![[FOOINBAR:[0-9]+]]
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; WL: ret i32 %sum, !dbg ![[BARRET:[0-9]+]]
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define i32 @bar(i32 %a, i32 %b) !dbg !3 {
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entry:
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%sum = add i32 %a, %b, !dbg !DILocation(line: 2, scope: !4,
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inlinedAt: !DILocation(line: 12, scope: !3))
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ret i32 %sum, !dbg !DILocation(line: 13, scope: !3)
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}
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define linkonce i32 @foo(i32 %a, i32 %b) !dbg !4 {
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entry:
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%sum = add i32 %a, %b, !dbg !DILocation(line: 2, scope: !4)
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ret i32 %sum, !dbg !DILocation(line: 3, scope: !4)
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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; CHECK-LABEL: !llvm.dbg.cu =
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; LW-SAME: !{![[LCU:[0-9]+]], ![[WCU:[0-9]+]]}
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; WL-SAME: !{![[WCU:[0-9]+]], ![[LCU:[0-9]+]]}
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!llvm.dbg.cu = !{!1}
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; LW: ![[LCU]] = distinct !DICompileUnit(
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; LW: ![[WCU]] = distinct !DICompileUnit(
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; LW: ![[BARSP]] = distinct !DISubprogram(name: "bar",{{.*}} unit: ![[LCU]]
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; LW: ![[FOOINBAR]] = !DILocation(line: 2, scope: ![[FOOSP:.*]], inlinedAt: ![[BARIA:[0-9]+]])
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; LW: ![[FOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[LCU]]
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; LW: ![[BARIA]] = !DILocation(line: 12, scope: ![[BARSP]])
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; LW: ![[BARRET]] = !DILocation(line: 13, scope: ![[BARSP]])
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; LW: ![[WEAKFOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[WCU]]
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; LW: ![[FOOCALL]] = !DILocation(line: 52, scope: ![[WEAKFOOSP]])
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; LW: ![[FOORET]] = !DILocation(line: 53, scope: ![[WEAKFOOSP]])
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; Same as above, but reordered.
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; WL: ![[WCU]] = distinct !DICompileUnit(
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; WL: ![[LCU]] = distinct !DICompileUnit(
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; WL: ![[WEAKFOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[WCU]]
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; WL: ![[FOOCALL]] = !DILocation(line: 52, scope: ![[WEAKFOOSP]])
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; WL: ![[FOORET]] = !DILocation(line: 53, scope: ![[WEAKFOOSP]])
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; WL: ![[BARSP]] = distinct !DISubprogram(name: "bar",{{.*}} unit: ![[LCU]]
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; WL: ![[FOOINBAR]] = !DILocation(line: 2, scope: ![[FOOSP:.*]], inlinedAt: ![[BARIA:[0-9]+]])
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; WL: ![[FOOSP]] = distinct !DISubprogram(name: "foo",{{.*}} unit: ![[LCU]]
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; WL: ![[BARIA]] = !DILocation(line: 12, scope: ![[BARSP]])
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; WL: ![[BARRET]] = !DILocation(line: 13, scope: ![[BARSP]])
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!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, emissionKind: FullDebug)
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!2 = !DIFile(filename: "bar.c", directory: "/path/to/dir")
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!3 = distinct !DISubprogram(file: !2, scope: !2, line: 11, name: "bar", type: !5, unit: !1)
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!4 = distinct !DISubprogram(file: !2, scope: !2, line: 1, name: "foo", type: !5, unit: !1)
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!5 = !DISubroutineType(types: !{})
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; Crasher for llc.
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; REQUIRES: object-emission
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; RUN: %llc_dwarf -filetype=obj -O0 %t1 -o %t1.o
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; RUN: llvm-dwarfdump %t1.o --all | FileCheck %s -check-prefix=DWLW -check-prefix=DW
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; RUN: %llc_dwarf -filetype=obj -O0 %t2 -o %t2.o
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; RUN: llvm-dwarfdump %t2.o --all | FileCheck %s -check-prefix=DWWL -check-prefix=DW
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; Check that the debug info for the discarded linkonce version of @foo doesn't
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; reference any code, and that the other subprograms look correct.
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; DW-LABEL: .debug_info contents:
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; DWLW: DW_TAG_compile_unit
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; DWLW: DW_AT_name {{.*}}"bar.c"
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; DWLW: DW_TAG_subprogram
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; DWLW-NOT: DW_AT_low_pc
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; DWLW-NOT: DW_AT_high_pc
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; DWLW: DW_AT_name {{.*}}foo
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; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c"
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; DWLW: DW_AT_decl_line {{.*}}(1)
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; DWLW: DW_TAG_subprogram
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; DWLW: DW_AT_low_pc
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; DWLW: DW_AT_high_pc
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; DWLW: DW_AT_name {{.*}}bar
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; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c"
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; DWLW: DW_AT_decl_line {{.*}}(11)
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; DWLW: DW_TAG_inlined_subroutine
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; DWLW: DW_AT_abstract_origin
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; DWLW: DW_TAG_compile_unit
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; DWLW: DW_AT_name {{.*}}"foo.c"
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; DWLW: DW_TAG_subprogram
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; DWLW: DW_AT_low_pc
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; DWLW: DW_AT_high_pc
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; DWLW: DW_AT_name {{.*}}foo
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; DWLW: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c"
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; DWLW: DW_AT_decl_line {{.*}}(51)
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; The DWARF output is already symmetric (just reordered).
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; DWWL: DW_TAG_compile_unit
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; DWWL: DW_AT_name {{.*}}"foo.c"
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; DWWL: DW_TAG_subprogram
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; DWWL: DW_AT_low_pc
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; DWWL: DW_AT_high_pc
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; DWWL: DW_AT_name {{.*}}foo
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; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}foo.c"
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; DWWL: DW_AT_decl_line {{.*}}(51)
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; DWWL: DW_TAG_compile_unit
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; DWWL: DW_AT_name {{.*}}"bar.c"
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; DWWL: DW_TAG_subprogram
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; DWWL-NOT: DW_AT_low_pc
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; DWWL-NOT: DW_AT_high_pc
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; DWWL: DW_AT_name {{.*}}foo
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; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c"
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; DWWL: DW_AT_decl_line {{.*}}(1)
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; DWWL: DW_TAG_subprogram
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; DWWL: DW_AT_low_pc
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; DWWL: DW_AT_high_pc
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; DWWL: DW_AT_name {{.*}}bar
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; DWWL: DW_AT_decl_file {{.*}}"/path/to/dir{{/|\\}}bar.c"
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; DWWL: DW_AT_decl_line {{.*}}(11)
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; DWWL: DW_TAG_inlined_subroutine
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; DWWL: DW_AT_abstract_origin
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; DW-LABEL: .debug_line contents:
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; Check that we have the right things in the line table as well.
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; DWLW-LABEL: file_names[{{ *}}1]{{.*}} "bar.c"
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; DWLW: 2 0 1 0 0 is_stmt prologue_end
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; DWLW-LABEL: file_names[{{ *}}1]{{.*}} "foo.c"
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; DWLW: 52 0 1 0 0 is_stmt prologue_end
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; DWLW-NOT: prologue_end
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; DWWL-LABEL: file_names[{{ *}}1]{{.*}} "foo.c"
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; DWWL: 52 0 1 0 0 is_stmt prologue_end
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; DWWL-LABEL: file_names[{{ *}}1]{{.*}} "bar.c"
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; DWWL: 2 0 1 0 0 is_stmt prologue_end
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; DWWL-NOT: prologue_end
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