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[llvm-objcopy][MachO] Remove more sections with llvm-bitcode-strip 

This adds the other potential bitcode sections that can exist and should
be stripped with `-r` from `llvm-bitcode-strip`.

Differential Revision: https://reviews.llvm.org/D132267
This commit is contained in:
Keith Smiley 2022-08-19 16:33:30 -07:00
parent 065d2e1d8b
commit d991aa91f1
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GPG Key ID: 33BA60D44C7167F8
2 changed files with 37 additions and 0 deletions
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29
llvm/test/tools/llvm-objcopy/MachO/bitcode-strip-object.s Normal file
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@ -0,0 +1,29 @@
# REQUIRES: x86-registered-target
## Verify llvm-bitcode-strip removes sections from object files
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t
# RUN: llvm-bitcode-strip -r %t -o %t2
# RUN: llvm-readobj --macho-segment --sections %t2 | FileCheck --implicit-check-not=__LLVM %s
# CHECK: Name: __text
# CHECK-NEXT: Segment: __TEXT
.section __LLVM,__bundle
.asciz "test"
.section __LLVM,__bitcode
.asciz "test"
.section __LLVM,__cmdline
.asciz "test"
.section __LLVM,__swift_cmdline
.asciz "test"
.section __LLVM,__asm
.asciz "test"
.text
.globl _main
_main:
ret

8
llvm/tools/llvm-objcopy/ObjcopyOptions.cpp
View File

@ -1197,8 +1197,16 @@ objcopy::parseBitcodeStripOptions(ArrayRef<const char *> ArgsArr,
// We only support -r for now, which removes all bitcode sections and // We only support -r for now, which removes all bitcode sections and
// the __LLVM segment if it's now empty. // the __LLVM segment if it's now empty.
cantFail(Config.ToRemove.addMatcher(NameOrPattern::create(
"__LLVM,__asm", MatchStyle::Literal, ErrorCallback)));
cantFail(Config.ToRemove.addMatcher(NameOrPattern::create(
"__LLVM,__bitcode", MatchStyle::Literal, ErrorCallback)));
cantFail(Config.ToRemove.addMatcher(NameOrPattern::create( cantFail(Config.ToRemove.addMatcher(NameOrPattern::create(
"__LLVM,__bundle", MatchStyle::Literal, ErrorCallback))); "__LLVM,__bundle", MatchStyle::Literal, ErrorCallback)));
cantFail(Config.ToRemove.addMatcher(NameOrPattern::create(
"__LLVM,__cmdline", MatchStyle::Literal, ErrorCallback)));
cantFail(Config.ToRemove.addMatcher(NameOrPattern::create(
"__LLVM,__swift_cmdline", MatchStyle::Literal, ErrorCallback)));
MachOConfig.EmptySegmentsToRemove.insert("__LLVM"); MachOConfig.EmptySegmentsToRemove.insert("__LLVM");
DC.CopyConfigs.push_back(std::move(ConfigMgr)); DC.CopyConfigs.push_back(std::move(ConfigMgr));