averello/swift-mirror
1
0
Fork 0
mirror of https://github.com/apple/swift.git synced 2025-12-14 20:36:38 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/main' into rebranch

Browse Source
This commit is contained in:
swift-ci
2021-09-30 15:11:41 -07:00
parent 3f18865559 52a9713fb7
commit c51550f30e
199 changed files with 6656 additions and 1378 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
lib/DriverTool/autolink_extract_main.cpp
View File

@@ -32,6 +32,8 @@
#include "llvm/Object/Archive.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Object/Wasm.h"
#include "llvm/BinaryFormat/Wasm.h"
using namespace swift;
using namespace llvm::opt;
@@ -145,6 +147,30 @@ extractLinkerFlagsFromObjectFile(const llvm::object::ObjectFile *ObjectFile,
return false;
}
/// Look inside the object file 'WasmObjectFile' and append any linker flags
/// found in its ".swift1_autolink_entries" section to 'LinkerFlags'. Return
/// 'true' if there was an error, and 'false' otherwise.
static bool
extractLinkerFlagsFromObjectFile(const llvm::object::WasmObjectFile *ObjectFile,
std::vector<std::string> &LinkerFlags,
CompilerInstance &Instance) {
// Search for the data segment we hold autolink entries in
for (const llvm::object::WasmSegment &Segment : ObjectFile->dataSegments()) {
if (Segment.Data.Name == ".swift1_autolink_entries") {
StringRef SegmentData = llvm::toStringRef(Segment.Data.Content);
// entries are null-terminated, so extract them and push them into
// the set.
llvm::SmallVector<llvm::StringRef, 4> SplitFlags;
SegmentData.split(SplitFlags, llvm::StringRef("\0", 1), -1,
/*KeepEmpty=*/false);
for (const auto &Flag : SplitFlags)
LinkerFlags.push_back(Flag.str());
}
}
return false;
}
/// Look inside the binary 'Bin' and append any linker flags found in its
/// ".swift1_autolink_entries" section to 'LinkerFlags'. If 'Bin' is an archive,
/// recursively look inside all children within the archive. Return 'true' if
@@ -155,6 +181,9 @@ static bool extractLinkerFlags(const llvm::object::Binary *Bin,
std::vector<std::string> &LinkerFlags) {
if (auto *ObjectFile = llvm::dyn_cast<llvm::object::ELFObjectFileBase>(Bin)) {
return extractLinkerFlagsFromObjectFile(ObjectFile, LinkerFlags, Instance);
} else if (auto *ObjectFile =
llvm::dyn_cast<llvm::object::WasmObjectFile>(Bin)) {
return extractLinkerFlagsFromObjectFile(ObjectFile, LinkerFlags, Instance);
} else if (auto *Archive = llvm::dyn_cast<llvm::object::Archive>(Bin)) {
llvm::Error Error = llvm::Error::success();
for (const auto &Child : Archive->children(Error)) {