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Revert "[dsymutil] Timestmap verification for __swift_ast"

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This reverts commit r315456.

llvm-svn: 315458
This commit is contained in:
Jonas Devlieghere 2017-10-11 13:51:30 +00:00
parent d4ed8e7017
commit bb2f966aec
7 changed files with 23 additions and 74 deletions
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26
test/tools/dsymutil/ARM/swift-ast.test
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@ -1,26 +0,0 @@
RUN: llvm-dsymutil -oso-prepend-path %p/.. %p/../Inputs/swift-ast.macho.fat -o %T/swift-ast.dSYM -verbose -no-swiftmodule-timestamp | FileCheck %s --check-prefix=DSYMUTIL
RUN: llvm-readobj -sections -section-data %T/swift-ast.dSYM/Contents/Resources/DWARF/swift-ast.macho.fat | FileCheck %s --check-prefix=READOBJ
The tested object file has been created by the dummy Swift code:
let x = 1
Compiled with:
swiftc /tmp/test.swift -Onone -target armv7-apple-ios8.1 -c -o swift-ast-armv7.o
ld swift-ast-armv7.o -add_ast_path swift-ast.swiftmodule -arch armv7 -ios_version_min 8.1 -syslibroot /path/to/iPhoneOS.sdk -L/path/to/usr/lib/swift/iphoneos -lobjc -lSystem -o swift-ast.macho.armv7
swiftc /tmp/test.swift -Onone -target arm64-apple-ios8.1 -c -o swift-ast-arm64.o
ld swift-ast-arm64.o -add_ast_path swift-ast.swiftmodule -arch arm64 -ios_version_min 8.1 -syslibroot /path/to/iPhoneOS.sdk -L/path/to/usr/lib/swift/iphoneos -lobjc -lSystem -o swift-ast.macho.arm64
lipo -create swift-ast.macho.armv7 swift-ast.macho.arm64 -o swift-ast.macho.fat
DSYMUTIL: filename:{{.*}}swift-ast.swiftmodule
DSYMUTIL: DEBUG MAP OBJECT:{{.*}}swift-ast.swiftmodule
READOBJ: Name:{{.*}}__swift_ast
READOBJ: |SWIFTMODULE DATA|
READOBJ-NEXT: |.|
READOBJ: |SWIFTMODULE DATA|
READOBJ-NEXT: |.|
RUN: llvm-dsymutil -oso-prepend-path %p/.. %p/../Inputs/swift-ast.macho.fat -no-output -verbose 2>&1 | FileCheck %s --check-prefix=TIMESTAMP
TIMESTAMP: Warning: Timestamp mismatch

BIN
test/tools/dsymutil/Inputs/swift-ast.macho.fat
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Binary file not shown.

11
test/tools/dsymutil/X86/swift-ast-x86_64.test
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@ -1,19 +1,14 @@
RUN: llvm-dsymutil -oso-prepend-path %p/.. %p/../Inputs/swift-ast.macho.x86_64 -o %T/swift-ast.dSYM -verbose -no-swiftmodule-timestamp | FileCheck %s --check-prefix=DSYMUTIL
RUN: llvm-dsymutil -oso-prepend-path %p/.. %p/../Inputs/swift-ast.macho.x86_64 -o %T/swift-ast.dSYM -verbose | FileCheck %s --check-prefix=DSYMUTIL
RUN: llvm-readobj -sections -section-data %T/swift-ast.dSYM/Contents/Resources/DWARF/swift-ast.macho.x86_64 | FileCheck %s --check-prefix=READOBJ
The tested object file has been created by the dummy Swift code:
let x = 1
Compiled with:
swiftc /tmp/test.swift -Onone -target x86_64-apple-macosx10.9 -c
ld swift-ast.o -add_ast_path Inputs/swift-ast.swiftmodule -arch x86_64 -lSystem -macosx_version_min 10.9.0
Compiled with: swiftc /tmp/test.swift -Onone -target x86_64-apple-macosx10.9 -c
Linked with: ld swift-ast.o -add_ast_path Inputs/swift-ast.swiftmodule -arch x86_64 -lSystem -macosx_version_min 10.9.0
DSYMUTIL: filename:{{.*}}swift-ast.swiftmodule
DSYMUTIL: DEBUG MAP OBJECT:{{.*}}swift-ast.swiftmodule
READOBJ: Name:{{.*}}__swift_ast
READOBJ: |SWIFTMODULE DATA|
READOBJ-NEXT: |.|
RUN: llvm-dsymutil -oso-prepend-path %p/.. %p/../Inputs/swift-ast.macho.x86_64 -no-output -verbose 2>&1 | FileCheck %s --check-prefix=TIMESTAMP
TIMESTAMP: Warning: Timestamp mismatch

12
tools/dsymutil/BinaryHolder.h
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@ -66,6 +66,12 @@ class BinaryHolder {
MapArchiveAndGetMemberBuffers(StringRef Filename,
sys::TimePoint<std::chrono::seconds> Timestamp);
void changeBackingMemoryBuffer(std::unique_ptr<MemoryBuffer> &&MemBuf);
ErrorOr<const object::ObjectFile &> getObjfileForArch(const Triple &T);
public:
BinaryHolder(bool Verbose) : Verbose(Verbose) {}
/// Return the MemoryBufferRef that holds the memory mapping for the
/// given \p Filename. This function will try to parse archive
/// member specifications of the form /path/to/archive.a(member.o).
@ -79,12 +85,6 @@ class BinaryHolder {
GetMemoryBuffersForFile(StringRef Filename,
sys::TimePoint<std::chrono::seconds> Timestamp);
void changeBackingMemoryBuffer(std::unique_ptr<MemoryBuffer> &&MemBuf);
ErrorOr<const object::ObjectFile &> getObjfileForArch(const Triple &T);
public:
BinaryHolder(bool Verbose) : Verbose(Verbose) {}
/// Get the ObjectFiles designated by the \p Filename. This
/// might be an archive member specification of the form
/// /path/to/archive.a(member.o).

33
tools/dsymutil/DwarfLinker.cpp
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@ -525,8 +525,8 @@ public:
/// Emit the string table described by \p Pool.
void emitStrings(const NonRelocatableStringpool &Pool);
/// Emit the swift_ast section stored in \p Buffer.
void emitSwiftAST(StringRef Buffer);
/// Emit the swift_ast section stored in \p Buffers.
void emitSwiftAST(const std::vector<MemoryBufferRef> &Buffers);
/// Emit debug_ranges for \p FuncRange by translating the
/// original \p Entries.
@ -712,11 +712,12 @@ void DwarfStreamer::emitStrings(const NonRelocatableStringpool &Pool) {
}
/// Emit the swift_ast section stored in \p Buffers.
void DwarfStreamer::emitSwiftAST(StringRef Buffer) {
void DwarfStreamer::emitSwiftAST(const std::vector<MemoryBufferRef> &Buffers) {
MCSection *SwiftASTSection = MOFI->getDwarfSwiftASTSection();
SwiftASTSection->setAlignment(1 << 5);
MS->SwitchSection(SwiftASTSection);
MS->EmitBytes(Buffer);
for (auto Buf : Buffers)
MS->EmitBytes(Buf.getBuffer());
}
/// Emit the debug_range section contents for \p FuncRange by
@ -3490,28 +3491,12 @@ bool DwarfLinker::link(const DebugMap &Map) {
// N_AST objects (swiftmodule files) should get dumped directly into the
// appropriate DWARF section.
if (Obj->getType() == MachO::N_AST) {
StringRef File = Obj->getObjectFilename();
auto ErrorOrMem = MemoryBuffer::getFile(File);
if (!ErrorOrMem) {
errs() << "Warning: Could not open " << File << "\n";
auto ErrOrMemBufferRefs = BinHolder.GetMemoryBuffersForFile(
Obj->getObjectFilename(), Obj->getTimestamp());
if (ErrOrMemBufferRefs.getError())
continue;
}
sys::fs::file_status Stat;
if (auto errc = sys::fs::status(File, Stat)) {
errs() << "Warning: " << errc.message() << "\n";
continue;
}
if (!Options.NoTimestamp && Stat.getLastModificationTime() !=
sys::TimePoint<>(Obj->getTimestamp())) {
errs() << "Warning: Timestamp mismatch for " << File << ": "
<< Stat.getLastModificationTime() << " and "
<< sys::TimePoint<>(Obj->getTimestamp()) << "\n";
continue;
}
// Copy the module into the .swift_ast section.
if (!Options.NoOutput)
Streamer->emitSwiftAST((*ErrorOrMem)->getBuffer());
Streamer->emitSwiftAST(ErrOrMemBufferRefs.get());
continue;
}

6
tools/dsymutil/dsymutil.cpp
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@ -68,10 +68,7 @@ static opt<bool>
NoOutput("no-output",
desc("Do the link in memory, but do not emit the result file."),
init(false), cat(DsymCategory));
static opt<bool>
NoTimestamp("no-swiftmodule-timestamp",
desc("Don't check timestamp for swiftmodule files."),
init(false), cat(DsymCategory));
static list<std::string> ArchFlags(
"arch",
desc("Link DWARF debug information only for specified CPU architecture\n"
@ -269,7 +266,6 @@ int main(int argc, char **argv) {
Options.Verbose = Verbose;
Options.NoOutput = NoOutput;
Options.NoODR = NoODR;
Options.NoTimestamp = NoTimestamp;
Options.PrependPath = OsoPrependPath;
llvm::InitializeAllTargetInfos();

9
tools/dsymutil/dsymutil.h
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@ -25,13 +25,12 @@ namespace llvm {
namespace dsymutil {
struct LinkOptions {
bool Verbose; ///< Verbosity
bool NoOutput; ///< Skip emitting output
bool NoODR; ///< Do not unique types according to ODR
bool NoTimestamp; ///< Do not check swiftmodule timestamp
bool Verbose; ///< Verbosity
bool NoOutput; ///< Skip emitting output
bool NoODR; ///< Do not unique types according to ODR
std::string PrependPath; ///< -oso-prepend-path
LinkOptions() : Verbose(false), NoOutput(false), NoTimestamp(false) {}
LinkOptions() : Verbose(false), NoOutput(false) {}
};
/// \brief Extract the DebugMaps from the given file.