Issue 6112056: -gline-tables-only flag for Clang

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Issue 6112056: -gline-tables-only flag for Clang (Closed)

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Created:
12 years, 9 months ago by samsonov

Modified:
12 years, 8 months ago

Reviewers:
echristo, kcc1, chandlerc1, glider

CC:
cfe-commits_cs.uiuc.edu

Base URL:
https://llvm.org/svn/llvm-project/cfe/trunk/

Visibility:
Public.

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Description

This patch adds a new Clang compiler flag "-gline-tables-only". It should reduce the amount of emitted debug information: 1) DIEs in .debug_info should only have types DW_TAG_compile_unit, DW_TAG_subprogram, DW_TAG_inlined_subroutine (for opt builds), DW_TAG_lexical_block. 2) .debug_str should only contain function names 3) No debug data for types/namespaces/variables should be emitted. 4) The data in .debug_line should be enough to produce valid stack traces with function names and line numbers.

	Unified diffs	Side-by-side diffs	Delta from patch set	Stats (+161 lines, -38 lines)			Patch
M	include/clang/Driver/Options.td	View	1 2 3	1 chunk	+2 lines, -0 lines	0 comments	Download
M	include/clang/Frontend/CodeGenOptions.h	View	1 2 3	1 chunk	+2 lines, -0 lines	0 comments	Download
M	lib/CodeGen/CGBlocks.cpp	View	1 2 3	1 chunk	+10 lines, -8 lines	0 comments	Download
M	lib/CodeGen/CGDebugInfo.cpp	View	1 2 3	11 chunks	+43 lines, -17 lines	0 comments	Download
M	lib/CodeGen/CGDecl.cpp	View	1 2 3	4 chunks	+20 lines, -10 lines	0 comments	Download
M	lib/CodeGen/CodeGenFunction.cpp	View	1 2 3	1 chunk	+2 lines, -1 line	0 comments	Download
M	lib/CodeGen/CodeGenModule.cpp	View	1 2 3	1 chunk	+2 lines, -1 line	0 comments	Download
M	lib/Driver/Tools.cpp	View	1 2 3	1 chunk	+2 lines, -0 lines	0 comments	Download
M	lib/Frontend/CompilerInvocation.cpp	View	1 2 3	2 chunks	+6 lines, -1 line	0 comments	Download
A	test/CodeGen/debug-info-gline-tables-only.c	View	1	1 chunk	+33 lines, -0 lines	0 comments	Download
A	test/CodeGen/debug-info-gline-tables-only2.c	View	1	1 chunk	+13 lines, -0 lines	0 comments	Download
A	test/CodeGenCXX/debug-info-gline-tables-only.cpp	View		1 chunk	+21 lines, -0 lines	0 comments	Download
M	test/Driver/debug-options.c	View	1 2 3	2 chunks	+5 lines, -0 lines	0 comments	Download

Messages

Total messages: 1

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glider

12 years, 9 months ago (2012-04-25 12:07:18 UTC) #1

http://codereview.appspot.com/6112056/diff/2001/test/CodeGen/debug-info-gline...
File test/CodeGen/debug-info-gline-tables-only.c (right):

http://codereview.appspot.com/6112056/diff/2001/test/CodeGen/debug-info-gline...
test/CodeGen/debug-info-gline-tables-only.c:8: // CHECK-NOT: DW_TAG_typedef
This isn't going to work. You'll need CHECK directives around each CHECK-NOT

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