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[BOLT][DWARF] Add support to create path (#73884)

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When option --dwarf-output-path is specified, if the path does not exist
BOLT will now create it. This is what also happens when
--plugin-opt=dwo_dir=<value> is specified to LLD.
This commit is contained in:
Alexander Yermolovich
2023-11-30 09:41:01 -08:00
committed by GitHub
parent 5b72950394
commit 52be47b890
2 changed files with 18 additions and 0 deletions
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2
bolt/lib/Rewrite/DWARFRewriter.cpp
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@@ -679,6 +679,8 @@ void DWARFRewriter::updateDebugInfo() {
assert(CompDirAttrInfo && "DW_AT_comp_dir is not in Skeleton CU.");
if (!opts::DwarfOutputPath.empty()) {
if (!sys::fs::exists(opts::DwarfOutputPath))
sys::fs::create_directory(opts::DwarfOutputPath);
addStringHelper(DIEBldr, UnitDIE, Unit, CompDirAttrInfo,
opts::DwarfOutputPath.c_str());
}

16
bolt/test/X86/dwarf5-df-output-dir-same-name.test
View File

@@ -21,3 +21,19 @@
; BOLT: split.dwo1.dwo
; BOLT: DW_AT_dwo_name ("split.dwo0.dwo")
; BOLT: DW_AT_dwo_name ("split.dwo1.dwo")
; Tests that when --dwarf-output-path is specified, but path do not exist BOLT creates it.
; RUN: rm -rf dwo
; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections --dwarf-output-path=%t/dwo
; RUN: ls -l %t/dwo > log
; RUN: llvm-dwarfdump --debug-info main.exe.bolt >> log
; RUN: cat log | FileCheck -check-prefix=BOLT1 %s
; Tests that BOLT handles correctly writing out .dwo files to the same directory when input has input where part of path
; is in DW_AT_dwo_name and the .dwo file names are the same.
; BOLT1: split.dwo0.dwo
; BOLT1: split.dwo1.dwo
; BOLT1: DW_AT_dwo_name ("split.dwo0.dwo")
; BOLT1: DW_AT_dwo_name ("split.dwo1.dwo")