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[lld] Fix -ObjC load behavior with LTO #92162

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Merged
merged 1 commit into from
May 15, 2024
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[lld] Fix -ObjC load behavior with LTO #92162

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23 changes: 20 additions & 3 deletions lld/test/MachO/objc.s
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Original file line number Diff line number Diff line change
Expand Up @@ -5,12 +5,14 @@
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-objc-category.s -o %t/has-objc-category.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-objc-symbol-and-category.s -o %t/has-objc-symbol-and-category.o
# 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-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/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/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-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o

Expand All @@ -20,7 +22,7 @@
# 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/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/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 @@ -36,6 +38,7 @@
# OBJC-NEXT: 4 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
Expand Down Expand Up @@ -100,6 +103,20 @@ _has_dup:
.section __TEXT,__swift
.quad 0x1234

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

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

#--- has-swift-ir-not-loaded.ll
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "x86_64-apple-darwin"

@bar = global i64 1234
@llvm.used = appending global [1 x ptr] [ptr @bar]

#--- 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
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Original file line number Diff line number Diff line change
Expand Up @@ -306,7 +306,8 @@ static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) {
return error("Invalid section name record");
// 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("__OBJC,__category") != std::string::npos ||
S.find("__TEXT,__swift") != std::string::npos)
return true;
break;
}
Expand Down