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587 Commits

Author SHA1 Message Date
Rafael Espindola
79278365d3 Check in getOrCreateSubprogramDIE if a declaration exists and if so output 
it first.

This is a more general fix to pr11300.

llvm-svn: 144324
 2011-11-10 22:34:29 +00:00
Eric Christopher
66b37db641 Make types and namespaces take multiple DIEs for the accelerator tables 
as well.

llvm-svn: 144319
 2011-11-10 21:47:55 +00:00
Eric Christopher
d9843b34e6 Rework adding function names to the dwarf accelerator tables, allow 
multiple dies per function and support C++ basenames.

llvm-svn: 144304
 2011-11-10 19:25:34 +00:00
Benjamin Kramer
966ed1b698 Add comments. 
llvm-svn: 144194
 2011-11-09 18:16:11 +00:00
Benjamin Kramer
148db36263 Take advantage of the zero byte in StringMap when emitting dwarf stringpool entries. 
llvm-svn: 144184
 2011-11-09 12:12:04 +00:00
Eric Christopher
5223a57533 Remove the pubnames section, no one consumes it. 
llvm-svn: 144169
 2011-11-09 05:24:07 +00:00
Eric Christopher
08a558eeef Also add the linkage name to the name accelerator tables if it exists 
and is different than the normal name.

llvm-svn: 144130
 2011-11-08 21:56:23 +00:00
Eric Christopher
970771c0e8 Add the base ObjC method name to the names lookup table as well. 
llvm-svn: 144105
 2011-11-08 19:16:01 +00:00
Eric Christopher
5139dadd50 Add all completed and named types to the dwarf type accelerator tables. 
llvm-svn: 144027
 2011-11-07 22:11:16 +00:00
Eric Christopher
988ac00abd Use StringRef::startswith to do some string comparisons. 
llvm-svn: 143982
 2011-11-07 18:53:23 +00:00
Eric Christopher
cc979f9ae6 Allow for the case where the name of the subprogram is "". 
Fixes a self-host error.

llvm-svn: 143970
 2011-11-07 18:10:17 +00:00
Eric Christopher
8c7505f258 Remove unnecessary addition to API. Replace with something much simpler. 
llvm-svn: 143925
 2011-11-07 09:38:42 +00:00
Eric Christopher
4996c70034 Add the support code to enable the dwarf accelerator tables. Upcoming patches 
to fix the types section (all types, not just global types), and testcases.

The code to do the final emission is disabled by default.

llvm-svn: 143923
 2011-11-07 09:24:32 +00:00
Eric Christopher
a7b6189071 Expose a way to get the beginning of the dwarf string section. 
llvm-svn: 143920
 2011-11-07 09:18:38 +00:00
Eric Christopher
6abc9c5aaa Fix up comment. 
llvm-svn: 143919
 2011-11-07 09:18:35 +00:00
Rafael Espindola
6cf4e830ce Emit declarations before definitions if they are available. This causes DW_AT_specification to 
point back in the file in the included testcase. Fixes PR11300.

llvm-svn: 143726
 2011-11-04 19:00:29 +00:00
Nick Lewycky
d1ee7f8cf1 Don't emit a directory entry for the value in DW_AT_comp_dir, that is always 
implied by directory index zero.

llvm-svn: 143570
 2011-11-02 20:55:33 +00:00
Nick Lewycky
d59c0cac6c Teach our Dwarf emission to use the string pool. 
llvm-svn: 143097
 2011-10-27 06:44:11 +00:00
Nick Lewycky
654f5ce812 Reflow lines, fix comments for doxygen style, fix whitespace. No functionality 
change.

llvm-svn: 143074
 2011-10-26 22:55:33 +00:00
Nick Lewycky
479a8fe75e Minor style cleanup, no functionality change. 
llvm-svn: 142307
 2011-10-17 23:27:36 +00:00
Nick Lewycky
40f8f2ff24 Add support for a new extension to the .file directive: 
.file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300
 2011-10-17 23:05:28 +00:00
Eric Christopher
6647b83087 Add a new wrapper node for a DILexicalBlock that encapsulates it and a 
file. Since it should only be used when necessary propagate it through
the backend code generation and tweak testcases accordingly.

This helps with code like in clang's test/CodeGen/debug-info-line.c where
we have multiple #line directives within a single lexical block and want
to generate only a single block that contains each file change.

Part of rdar://10246360

llvm-svn: 141729
 2011-10-11 22:59:11 +00:00
Eric Christopher
f84354bfb1 Typo. 
llvm-svn: 141004
 2011-10-03 15:49:16 +00:00
Devang Patel
59e27c5f12 Do not use named md nodes to track variables that are completely optimized. This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly. 
llvm-svn: 138145
 2011-08-19 23:28:12 +00:00
Devang Patel
0ecbcbd12c Eliminate unnecessary forwarding function. 
llvm-svn: 138006
 2011-08-18 23:17:55 +00:00
Devang Patel
eb1bb4e419 Until now all debug info MDNodes referred to a root MDNode, a compile unit. This simplified handling of these needs in dwarf writer. However, one side effect of this is that during link time optimization all these MDNodes are _not_ uniqued. In other words there will be N number of MDNodes describing "int", "char" and all other types, which would suddenly grow when each object file starts using libraries like STL. 
MDNodes graph structure such that compiler unit keeps track of important MDNodes and update dwarf writer to process mdnodes top-down instead of bottom up.

llvm-svn: 137778
 2011-08-16 22:09:43 +00:00
Devang Patel
927840458e Remove unnecessary version check. 
llvm-svn: 137728
 2011-08-16 17:41:41 +00:00
Devang Patel
07bb9eea33 Refactor. 
llvm-svn: 137689
 2011-08-15 23:47:24 +00:00
Devang Patel
1f4f98d664 Continue to hoist uses of getCompileUnit() up. The goal is to get rid of uses of getCompileUnit(). 
llvm-svn: 137683
 2011-08-15 23:36:40 +00:00
Devang Patel
d2dfc5ec02 This is somewhat déjà-vu, but avoid using getCompileUnit() as much as possible. 
llvm-svn: 137668
 2011-08-15 22:24:32 +00:00
Devang Patel
3acc70e536 Refactor. Variables are part of compile unit so let CompileUnit create new variable. 
llvm-svn: 137663
 2011-08-15 22:04:40 +00:00
Devang Patel
d899444347 There is no need to maintain a set to keep track of variables that use location expressions. In such cases, AT_location attribute's value will be a label. 
llvm-svn: 137659
 2011-08-15 21:43:21 +00:00
Devang Patel
900d97719b Fix warning. 
llvm-svn: 137658
 2011-08-15 21:35:16 +00:00
Devang Patel
3e4a965519 Simplify. Let DbgVariable keep track of variable's DBG_VALUE machine instruction. 
llvm-svn: 137656
 2011-08-15 21:24:36 +00:00
Devang Patel
99819b527d Simplify mapping to variable from its abstract variable info. 
When a variable is inlined multiple places, abstract variable keeps name, location, type etc.. info and all other concreate instances of the variable directly refers to abstract variable.

llvm-svn: 137637
 2011-08-15 19:01:20 +00:00
Devang Patel
d7d80aadd1 Refactor. 
llvm-svn: 137632
 2011-08-15 18:40:16 +00:00
Devang Patel
6e4d2c9fb7 Refactor. 
llvm-svn: 137631
 2011-08-15 18:35:42 +00:00
Devang Patel
dfd6ec3ce1 Refactor. Global variables are part of compile unit so let CompileUnit create new global variable. 
llvm-svn: 137621
 2011-08-15 17:57:41 +00:00
Devang Patel
895437142a Refactor. A subprogram is part of compile unit so let CompileUnit construct new subprogram. 
llvm-svn: 137618
 2011-08-15 17:24:54 +00:00
Devang Patel
444034783e Use ArrayRef. 
llvm-svn: 137485
 2011-08-12 18:10:19 +00:00
Benjamin Kramer
fa7e6a54b1 Plug a memory leak. 
llvm-svn: 137321
 2011-08-11 18:39:28 +00:00
Devang Patel
784077eb57 Stay within 80 columns. 
llvm-svn: 137283
 2011-08-10 23:58:09 +00:00
Devang Patel
bb23a4a9a5 Distinguish between two copies of one inlined variable. Take 2. 
llvm-svn: 137253
 2011-08-10 21:50:54 +00:00
Devang Patel
e30746c844 Revert unintentional parts of previous check-in. 
llvm-svn: 137249
 2011-08-10 21:16:49 +00:00
Devang Patel
7e62302fae Start using LexicalScopes utility. No intetional functionality change. 
llvm-svn: 137246
 2011-08-10 20:55:27 +00:00
Devang Patel
fee7cedbc9 Simplify by creating parent first. 
llvm-svn: 137056
 2011-08-08 18:22:10 +00:00
Chandler Carruth
81b7e11c89 Temporarily revert r135528 which distinguishes between two copies of one 
inlined variable, based on the discussion in PR10542.

This explodes the runtime of several passes down the pipeline due to
a large number of "copies" remaining live across a large function. This
only shows up with both debug and opt, but when it does it creates
a many-minute compile when self-hosting LLVM+Clang. There are several
other cases that show these types of regressions.

All of this is tracked in PR10542, and progress is being made on fixing
the issue. Once its addressed, the re-instated, but until then this
restores the performance for self-hosting and other opt+debug builds.

Devang, let me know if this causes any trouble, or impedes fixing it in
any way, and thanks for working on this!

llvm-svn: 136953
 2011-08-05 00:51:31 +00:00
Bob Wilson
0a8d5c6047 Some revisions to Devang's change r136759 for merged global debug info. 
llvm-svn: 136802
 2011-08-03 19:42:51 +00:00
Devang Patel
dc9cbaaf23 Use byte offset, instead of element number, to access merged global. 
llvm-svn: 136759
 2011-08-03 01:25:46 +00:00
Nick Lewycky
019d255d3e Fix a lot of typos, improve (but not necessarily fix) grammaros and reflow some 
lines. No functionality change.

llvm-svn: 136458
 2011-07-29 03:49:23 +00:00