Skip to content

[lld] Fix -ObjC load behavior with LTO for section names with whitespace #146654

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

[lld] Fix -ObjC load behavior with LTO for section names with whitespace #146654

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
20 changes: 15 additions & 5 deletions lld/test/MachO/objc.s
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,12 +7,13 @@
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-swift.s -o %t/has-swift.o
# RUN: llvm-as %t/has-swift-ir-loaded.ll -o %t/has-swift-ir-loaded.o
# RUN: llvm-as %t/has-swift-ir-not-loaded.ll -o %t/has-swift-ir-not-loaded.o
# RUN: llvm-as %t/has-swift-with-space-ir-loaded.ll -o %t/has-swift-with-space-ir-loaded.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-swift-proto.s -o %t/has-swift-proto.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/no-objc.s -o %t/no-objc.o
## Make sure we don't mis-parse a 32-bit file as 64-bit
# RUN: llvm-mc -filetype=obj -triple=armv7-apple-watchos %t/no-objc.s -o %t/wrong-arch.o
# RUN: llvm-ar rcs %t/libHasSomeObjC.a %t/no-objc.o %t/has-objc-symbol.o %t/has-objc-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/wrong-arch.o
# RUN: llvm-ar rcs %t/libHasSomeObjC2.a %t/no-objc.o %t/has-objc-symbol-and-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/wrong-arch.o
# RUN: llvm-ar rcs %t/libHasSomeObjC.a %t/no-objc.o %t/has-objc-symbol.o %t/has-objc-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/has-swift-with-space-ir-loaded.o %t/wrong-arch.o
# RUN: llvm-ar rcs %t/libHasSomeObjC2.a %t/no-objc.o %t/has-objc-symbol-and-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/has-swift-with-space-ir-loaded.o %t/wrong-arch.o

# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o

Expand All @@ -22,7 +23,7 @@
# RUN: %lld -lSystem %t/test.o -o %t/test -L%t -lHasSomeObjC2 -ObjC
# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=OBJC

# RUN: %no-fatal-warnings-lld -lSystem %t/test.o -o %t/test --start-lib %t/no-objc.o %t/has-objc-symbol.o %t/has-objc-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/wrong-arch.o --end-lib -ObjC 2>&1 \
# RUN: %no-fatal-warnings-lld -lSystem %t/test.o -o %t/test --start-lib %t/no-objc.o %t/has-objc-symbol.o %t/has-objc-category.o %t/has-swift.o %t/has-swift-proto.o %t/has-swift-ir-loaded.o %t/has-swift-ir-not-loaded.o %t/has-swift-with-space-ir-loaded.o %t/wrong-arch.o --end-lib -ObjC 2>&1 \
# RUN: | FileCheck -check-prefix=WARNING %s
# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=OBJC

Expand All @@ -34,14 +35,16 @@
# OBJC-NEXT: 0 __text {{.*}} TEXT
# OBJC-NEXT: 1 __swift {{.*}} DATA
# OBJC-NEXT: 2 __swift5_fieldmd{{.*}} DATA
# OBJC-NEXT: 3 __objc_catlist {{.*}} DATA
# OBJC-NEXT: 4 has_objc_symbol {{.*}} DATA
# OBJC-NEXT: 3 __swift5_proto {{.*}} DATA
# OBJC-NEXT: 4 __objc_catlist {{.*}} DATA
# OBJC-NEXT: 5 has_objc_symbol {{.*}} DATA
# OBJC-EMPTY:
# OBJC-NEXT: SYMBOL TABLE:
# OBJC-DAG: g O __TEXT,__swift _foo
# OBJC-DAG: g F __TEXT,__text _main
# OBJC-DAG: g F __TEXT,__text _OBJC_CLASS_$_MyObject
# OBJC-DAG: g O __TEXT,__swift5_fieldmd $s7somelib4Blah_pMF
# OBJC-DAG: g O __TEXT,__swift5_proto _baz

# RUN: %lld -lSystem %t/test.o -o %t/test -L%t -lHasSomeObjC
# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=NO-OBJC
Expand Down Expand Up @@ -117,6 +120,13 @@ target triple = "x86_64-apple-darwin"
@bar = global i64 1234
@llvm.used = appending global [1 x ptr] [ptr @bar]

#--- has-swift-with-space-ir-loaded.ll
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "x86_64-apple-darwin"

@baz = global i64 1234, section "__TEXT, __swift5_proto"
@llvm.used = appending global [1 x ptr] [ptr @baz]

#--- has-swift-proto.s
.section __TEXT,__swift5_fieldmd
.globl $s7somelib4Blah_pMF
Expand Down
3 changes: 2 additions & 1 deletion llvm/lib/Bitcode/Reader/BitcodeReader.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -296,7 +296,8 @@ static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) {
// Check for the i386 and other (x86_64, ARM) conventions
if (S.find("__DATA,__objc_catlist") != std::string::npos ||
S.find("__OBJC,__category") != std::string::npos ||
S.find("__TEXT,__swift") != std::string::npos)
S.find("__TEXT,__swift") != std::string::npos ||
S.find("__TEXT, __swift") != std::string::npos)
return true;
break;
}
Expand Down
Loading