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| author | David Blaikie <dblaikie@gmail.com> | 2014-03-20 17:05:45 +0000 |
|---|---|---|
| committer | David Blaikie <dblaikie@gmail.com> | 2014-03-20 17:05:45 +0000 |
| commit | b5a1fccdc51461f022617343c7455623794cfb90 (patch) | |
| tree | 5311aee16e6d2c357e90ad3684faef973213b267 /test/DebugInfo | |
| parent | 31bd14fc2d0c99f661609ff069bc127a8f8cd050 (diff) | |
| download | llvm-b5a1fccdc51461f022617343c7455623794cfb90.tar.gz llvm-b5a1fccdc51461f022617343c7455623794cfb90.tar.bz2 llvm-b5a1fccdc51461f022617343c7455623794cfb90.tar.xz | |
Add comments from Eric's review of r204094.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204358 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/DebugInfo')
| -rw-r--r-- | test/DebugInfo/lto-comp-dir.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/DebugInfo/lto-comp-dir.ll b/test/DebugInfo/lto-comp-dir.ll index eeaf4c0a65..d272dff6ea 100644 --- a/test/DebugInfo/lto-comp-dir.ll +++ b/test/DebugInfo/lto-comp-dir.ll @@ -3,6 +3,10 @@ ; RUN: %llc_dwarf < %s -filetype=obj | llvm-dwarfdump -debug-dump=line - | FileCheck %s ; RUN: %llc_dwarf < %s -filetype=asm | FileCheck --check-prefix=ASM %s +; If multiple line tables are emitted, one per CU, those line tables can +; unambiguously rely on the comp_dir of their owning CU and use directory '0' +; to refer to it. + ; CHECK: .debug_line contents: ; CHECK-NEXT: Line table prologue: ; CHECK-NOT: include_directories @@ -14,6 +18,11 @@ ; CHECK: file_names[ 1] 0 {{.*}} b.cpp ; CHECK-NOT: file_names +; However, if a single line table is emitted and shared between CUs, the +; comp_dir is ambiguous and relying on it would lead to different path +; interpretations depending on which CU lead to the table - so ensure that +; full paths are always emitted in this case, never comp_dir relative. + ; ASM: .file 1 "/tmp/dbginfo/a{{[/\\]+}}a.cpp" ; ASM: .file 2 "/tmp/dbginfo/b{{[/\\]+}}b.cpp" |