commit 36ec6c7314b824f03f955a5c0c2cbce56ef63412
author David Srbecky <dsrbecky@google.com> Fri Apr 26 12:46:08 2019 +0100
committer David Srbecky <dsrbecky@google.com> Mon Apr 29 16:33:51 2019 +0000
tree cb3b72b2eefc25dd6ce59219d4d685145566d48e
parent c36a8ccf44454f1a4b8b57420205faf11dec7046

Fix DWARF line-number generation for JITed methods.

Don't strip, repack or compress debug-info if explicitly
requested by the developer (using the -g compiler flag).

If enabled, the DWARF debug info has about 1:1 size
overhead relative to JIT code + data.

Bug: 131422204
Test: Check that gdb shows line numbers for JITed method.
Test: Hard-code always-enable generation and run maps.
Change-Id: If06de8ae2317af4d57d84e8a8bfae86a597dd4e4

compiler/optimizing/optimizing_compiler.cc

diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index f4bf11d..c799b12 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -1482,7 +1482,7 @@
     AddNativeDebugInfoForJit(Thread::Current(),
                              reinterpret_cast<const void*>(info.code_address),
                              elf_file,
-                             debug::PackElfFileForJIT,
+                             mini_debug_info ? debug::PackElfFileForJIT : nullptr,
                              compiler_options.GetInstructionSet(),
                              compiler_options.GetInstructionSetFeatures());
   }