Pack JIT mini-debug-infos together.
We currently produce one in-memory ELF file per JITed method,
which has significant overheads due to the ELF file headers.
Pack several of those files together regularly to save space.
Similarly, prune information about methods which were GCed.
This reduces the size of JIT mini-debug-info by factor of 10.
The final overhead is 5% to 10% relative to the JIT code size.
Test: ./art/test.py -b -r -t 137
Change-Id: Idfaff8ed9a209e871e815e527f24f36c63a57bbf
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index c9b4d36..4936a6d 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -1456,8 +1456,8 @@
return true;
}
-void OptimizingCompiler::GenerateJitDebugInfo(
- ArtMethod* method, const debug::MethodDebugInfo& info) {
+void OptimizingCompiler::GenerateJitDebugInfo(ArtMethod* method ATTRIBUTE_UNUSED,
+ const debug::MethodDebugInfo& info) {
const CompilerOptions& compiler_options = GetCompilerDriver()->GetCompilerOptions();
DCHECK(compiler_options.GenerateAnyDebugInfo());
@@ -1472,12 +1472,10 @@
info);
AddNativeDebugInfoForJit(Thread::Current(),
reinterpret_cast<const void*>(info.code_address),
- elf_file);
-
- VLOG(jit)
- << "JIT mini-debug-info added for " << ArtMethod::PrettyMethod(method)
- << " size=" << PrettySize(elf_file.size())
- << " total_size=" << PrettySize(GetJitMiniDebugInfoMemUsage());
+ elf_file,
+ debug::PackElfFileForJIT,
+ compiler_options.GetInstructionSet(),
+ compiler_options.GetInstructionSetFeatures());
}
} // namespace art