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84 lines
3.0 KiB
LLVM
84 lines
3.0 KiB
LLVM
; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 -relocation-model=pic < %s | FileCheck %s
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; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-line - | FileCheck %s --check-prefix=INT
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; Mips used to generate 'jumpy' debug line info around calls. The address
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; calculation for each call to f1() would share the same line info so it would
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; emit output of the form:
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; .loc $first_call_location
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; .. address calculation ..
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; .. function call ..
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; .. address calculation ..
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; .loc $second_call_location
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; .. function call ..
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; .loc $first_call_location
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; .. address calculation ..
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; .loc $third_call_location
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; .. function call ..
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; ...
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; which would cause confusing stepping behaviour for the end user.
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;
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; This test checks that we emit more user friendly debug line info of the form:
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; .loc $first_call_location
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; .. address calculation ..
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; .. function call ..
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; .loc $second_call_location
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; .. address calculation ..
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; .. function call ..
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; .loc $third_call_location
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; .. address calculation ..
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; .. function call ..
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; ...
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;
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; Generated with clang from fn-call-line.c:
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; void f1();
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; void f2() {
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; f1();
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; f1();
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; }
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; CHECK: .loc 1 3 3
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; CHECK-NOT: .loc
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; CHECK: %call16(f1)
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; CHECK-NOT: .loc
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; CHECK: .loc 1 4 3
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; CHECK-NOT: .loc
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; CHECK: %call16(f1)
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; INT: {{^}}Address
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; INT: -----
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; INT-NEXT: 2 0 1 0 0 is_stmt{{$}}
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; INT-NEXT: 3 3 1 0 0 is_stmt prologue_end{{$}}
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; INT-NEXT: 4 3 1 0 0 is_stmt{{$}}
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; Function Attrs: nounwind uwtable
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define void @f2() #0 !dbg !4 {
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entry:
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call void (...) @f1(), !dbg !11
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call void (...) @f1(), !dbg !12
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ret void, !dbg !13
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}
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declare void @f1(...) #1
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226641)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)
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!5 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 3.7.0 (trunk 226641)"}
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!11 = !DILocation(line: 3, column: 3, scope: !4)
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!12 = !DILocation(line: 4, column: 3, scope: !4)
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!13 = !DILocation(line: 5, column: 1, scope: !4)
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