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[lld/mac] Make -t work correctly with -flat_namespace 

We used to not print dylibs referenced by other dylibs in `-t` mode. This
affected reexports, and with `-flat_namespace` also just dylibs loaded by
dylibs. Now we print them.

Fixes PR49514.

Differential Revision: https://reviews.llvm.org/D103428
This commit is contained in:
Nico Weber 2021-05-31 18:20:22 -04:00
parent e6f88dc01a
commit 222a88a243
3 changed files with 15 additions and 2 deletions
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3
lld/MachO/Driver.cpp
View File

@ -316,7 +316,8 @@ static InputFile *addFile(StringRef path, bool forceLoadArchive,
if (newFile) {
// printArchiveMemberLoad() prints both .a and .o names, so no need to
// print the .a name here.
if (config->printEachFile && magic != file_magic::archive)
if (config->printEachFile && magic != file_magic::archive &&
!isa<DylibFile>(newFile))
message(toString(newFile));
inputFiles.insert(newFile);
}

4
lld/MachO/DriverUtils.cpp
View File

@ -214,6 +214,8 @@ DylibFile *macho::loadDylib(MemoryBufferRef mbref, DylibFile *umbrella,
return nullptr;
}
file = make<DylibFile>(**result, umbrella, isBundleLoader);
if (config->printEachFile)
message(toString(file));
// parseReexports() can recursively call loadDylib(). That's fine since
// we wrote DylibFile we just loaded to the loadDylib cache via the `file`
@ -229,6 +231,8 @@ DylibFile *macho::loadDylib(MemoryBufferRef mbref, DylibFile *umbrella,
magic == file_magic::macho_executable ||
magic == file_magic::macho_bundle);
file = make<DylibFile>(mbref, umbrella, isBundleLoader);
if (config->printEachFile)
message(toString(file));
// parseLoadCommands() can also recursively call loadDylib(). See comment
// in previous block for why this means we must copy `file` here.

10
lld/test/MachO/flat-namespace.s
View File

@ -14,7 +14,15 @@
# With flat_namespace, the linker automatically looks in foo.dylib and
# bar.dylib too, but it doesn't add a LC_LOAD_DYLIB for it.
# RUN: %lld -flat_namespace -lSystem %t/main.o %t/baz.dylib -o %t/out
# RUN: %lld -flat_namespace -lSystem %t/main.o %t/baz.dylib -o %t/out -t | \
# RUN: FileCheck --check-prefix=T %s
## FIXME: The `bar.dylib` line should use `T-NEXT`, but on Windows we load
## libSystem.tbd with different slash styles and end up loading it twice
## for that reason.
# T: main.o
# T-NEXT: baz.dylib
# T: bar.dylib
# T-NEXT: foo.dylib
# RUN: llvm-objdump --macho --all-headers %t/out \
# RUN: | FileCheck --check-prefix=HEADERBITS %s
# RUN: llvm-objdump --macho --bind --lazy-bind --weak-bind %t/out \