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37ac8d3622
This commit moves `MDLocation`, finishing off PR21433. There's an
accompanying clang commit for frontend testcases. I'll attach the
testcase upgrade script I used to PR21433 to help out-of-tree
frontends/backends.
This changes the schema for `DebugLoc` and `DILocation` from:
!{i32 3, i32 7, !7, !8}
to:
!MDLocation(line: 3, column: 7, scope: !7, inlinedAt: !8)
Note that empty fields (line/column: 0 and inlinedAt: null) don't get
printed by the assembly writer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226048 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
3.3 KiB
LLVM
76 lines
3.3 KiB
LLVM
; Test that coverage instrumentation does not lose debug location.
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; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s
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; C++ source:
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; 1: void foo(int *a) {
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; 2: if (a)
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; 3: *a = 0;
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; 4: }
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; clang++ if.cc -O3 -g -S -emit-llvm
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; and add sanitize_address to @_Z3fooPi
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Check that __sanitizer_cov call has !dgb pointing to the beginning
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; of appropriate basic blocks.
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; CHECK-LABEL:_Z3fooPi
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; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]]
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; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[B:!.*]]
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; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[C:!.*]]
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; CHECK: ret void
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; CHECK: [[A]] = !MDLocation(line: 1, scope: !{{.*}})
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; CHECK: [[B]] = !MDLocation(line: 3, column: 5, scope: !{{.*}})
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; CHECK: [[C]] = !MDLocation(line: 4, column: 1, scope: !{{.*}})
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define void @_Z3fooPi(i32* %a) #0 {
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entry:
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tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !15
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%tobool = icmp eq i32* %a, null, !dbg !16
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br i1 %tobool, label %if.end, label %if.then, !dbg !16
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if.then: ; preds = %entry
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store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19
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br label %if.end, !dbg !18
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if.end: ; preds = %entry, %if.then
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ret void, !dbg !23
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" sanitize_address}
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!12, !13}
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!llvm.ident = !{!14}
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!0 = !{!"0x11\004\00clang version 3.6.0 (217079)\001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [FOO/if.cc] [DW_LANG_C_plus_plus]
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!1 = !{!"if.cc", !"FOO"}
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!2 = !{}
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!3 = !{!4}
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!4 = !{!"0x2e\00foo\00foo\00_Z3fooPi\001\000\001\000\006\00256\001\001", !1, !5, !6, null, void (i32*)* @_Z3fooPi, null, null, !10} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [FOO/if.cc]
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!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = !{null, !8}
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!8 = !{!"0xf\00\000\0064\0064\000\000", null, null, !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
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!9 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!10 = !{!11}
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!11 = !{!"0x101\00a\0016777217\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [a] [line 1]
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!12 = !{i32 2, !"Dwarf Version", i32 4}
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!13 = !{i32 2, !"Debug Info Version", i32 2}
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!14 = !{!"clang version 3.6.0 (217079)"}
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!15 = !MDLocation(line: 1, column: 15, scope: !4)
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!16 = !MDLocation(line: 2, column: 7, scope: !17)
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!17 = !{!"0xb\002\007\000", !1, !4} ; [ DW_TAG_lexical_block ] [FOO/if.cc]
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!18 = !MDLocation(line: 3, column: 5, scope: !17)
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!19 = !{!20, !20, i64 0}
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!20 = !{!"int", !21, i64 0}
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!21 = !{!"omnipotent char", !22, i64 0}
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!22 = !{!"Simple C/C++ TBAA"}
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!23 = !MDLocation(line: 4, column: 1, scope: !4)
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