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3985 Commits

Author SHA1 Message Date
Devang Patel
e4127d626e 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
John Criswell
1e3b4b2f5b Fixed some punctuation. Sentences can be combined with semi-colons but not 
commas.

llvm-svn: 138043
 2011-08-19 16:57:55 +00:00
Devang Patel
630d8ce36b 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
f1b61abc8c Add a finalize() hook, that'll let DIBuilder construct compile unit lazily. 
llvm-svn: 137673
 2011-08-15 23:00:00 +00:00
Eli Friedman
ca9b9f06ee Fix the getelementptr description so it is extremely clear that array indices passed to getelementptr are signed. 
llvm-svn: 137538
 2011-08-12 23:37:55 +00:00
Eli Friedman
baf0f69f9a Move "atomic" and "volatile" designations on instructions after the opcode 
of the instruction.

Note that this change affects the existing non-atomic load and store
instructions; the parser now accepts both forms, and the change is noted
in the release notes.

llvm-svn: 137527
 2011-08-12 22:50:01 +00:00
Eli Friedman
a274534196 Some reorganization of atomic docs. Added explicit section for NonAtomic. Added example for illegal non-atomic operation. 
llvm-svn: 137520
 2011-08-12 21:50:54 +00:00
Bill Wendling
4cbbcd4f82 Initial commit of the 'landingpad' instruction. 
This implements the 'landingpad' instruction. It's used to indicate that a basic
block is a landing pad. There are several restrictions on its use (see
LangRef.html for more detail). These restrictions allow the exception handling
code to gather the information it needs in a much more sane way.

This patch has the definition, implementation, C interface, parsing, and bitcode
support in it.

llvm-svn: 137501
 2011-08-12 20:24:12 +00:00
Chris Lattner
f3629f2b27 apparently variable naming conventions never got added, document the 
prevailing convention.  Thanks to Dave Zarzycki for the patch.

llvm-svn: 137497
 2011-08-12 19:49:16 +00:00
Chris Lattner
79a221790c minor typo 
llvm-svn: 137496
 2011-08-12 19:48:19 +00:00
Chris Lattner
72f9fbf34e fix one reference that slipped through, thanks Eli 
llvm-svn: 137488
 2011-08-12 18:12:40 +00:00
Chris Lattner
d666fbc755 add new accessors to reflect new terminology in struct types. 
llvm-svn: 137468
 2011-08-12 17:31:02 +00:00
NAKAMURA Takumi
02868897cc docs/GettingStarted.html: [Git] Add instructions how to generate patchset with Git. 
llvm-svn: 137444
 2011-08-12 07:48:06 +00:00
NAKAMURA Takumi
da50fb07b0 docs/GettingStarted.html: [Git] Mention branch.master.rebase for the tracking branch. 
Thanks to Jeff Yasskin to reword.

llvm-svn: 137443
 2011-08-12 07:48:01 +00:00
NAKAMURA Takumi
9e24849245 docs/GettingStarted.html: [Git] Split the subsubsection for committer's section. 
llvm-svn: 137442
 2011-08-12 07:47:55 +00:00
NAKAMURA Takumi
ecab34205a docs: Update HTML markup(s). 
llvm-svn: 137433
 2011-08-12 06:17:17 +00:00
NAKAMURA Takumi
1b975dd6ca docs/llvm.css: Introduce <blockquote><pre>. It may be used as blockquoted "doc_code". 
llvm-svn: 137432
 2011-08-12 06:17:11 +00:00
Eli Friedman
00e4369ab7 Misc atomic doc tweaks; reordering operations across Acquire/Release can be beneficial. 
llvm-svn: 137425
 2011-08-12 03:38:32 +00:00
Eli Friedman
60b18ddf69 Fix up this paragraph (including a nasty typo). 
llvm-svn: 137408
 2011-08-12 01:26:06 +00:00
Andrew Trick
3efc88b31f Clarify the definition of SequentiallyConsistent operations. 
llvm-svn: 137403
 2011-08-12 00:36:38 +00:00
Eli Friedman
15fda085c1 Fix mismatched tag. 
llvm-svn: 137388
 2011-08-11 23:48:52 +00:00
Eli Friedman
7f6e958efc Revision to Atomics guide, per Chris's comments. 
llvm-svn: 137386
 2011-08-11 23:44:25 +00:00
Justin Holewinski
08425ade9c PTX: Add basic documentation to CodeGenerator.html 
llvm-svn: 137315
 2011-08-11 17:34:16 +00:00
Eli Friedman
5c21e417bb Changes per Jeffrey's comments. 
llvm-svn: 137243
 2011-08-10 20:17:43 +00:00
Eli Friedman
306aa10c47 Fix minor typo. 
llvm-svn: 137177
 2011-08-09 23:26:12 +00:00
Eli Friedman
5a2d27800e Representation of 'atomic load' and 'atomic store' in IR. 
llvm-svn: 137170
 2011-08-09 23:02:53 +00:00
Eli Friedman
5927cb56e3 First draft of the practical guide to atomics. 
This is mostly descriptive of the intended state once atomic load and store have landed.  

llvm-svn: 137145
 2011-08-09 21:07:10 +00:00
Bill Wendling
0f2208f619 Clean up the grammar for the landingpad instruction. 
llvm-svn: 137042
 2011-08-08 08:06:05 +00:00
Bill Wendling
83c0ada603 Fix typo found by John. 
llvm-svn: 137040
 2011-08-08 07:58:58 +00:00
Jay Foad
7713b0b4c9 Reword. 
llvm-svn: 136866
 2011-08-04 10:43:43 +00:00
Bill Wendling
fdea9930ac Remove the LowerSetJmp pass. It wasn't used effectively by any of the targets. 
This is some of my original LLVM code. *wipes tear*

llvm-svn: 136821
 2011-08-03 22:18:20 +00:00
Bill Wendling
6eae915356 Go back to the old definition. It's not clear that a 'resume' can be 'outlined' from the function with the landing pad for all platforms. 
llvm-svn: 136799
 2011-08-03 18:37:32 +00:00
Bill Wendling
da7eb90ea1 Explain how clauses are applied. 
llvm-svn: 136790
 2011-08-03 17:17:06 +00:00
Bill Wendling
9f3e3462b8 Add the documentation for the 'landingpad' instruction. Improve the 'invoke' 
instruction's documentation to reference the landingpad and resume instructions.

llvm-svn: 136729
 2011-08-02 21:52:38 +00:00
Chris Lattner
a780c5c9f1 no need to count the terminators. 
llvm-svn: 136718
 2011-08-02 20:29:13 +00:00
Bill Wendling
ea8143f430 Duncan's english is better than mine. :-) 
llvm-svn: 136684
 2011-08-02 06:39:13 +00:00
Bill Wendling
b37af02067 Remove the LLVMBuildUnwind C API function. 
The 'unwind' function is going away with the new EH rewrite. This is step 0 in
keeping front-ends from using it.

llvm-svn: 136683
 2011-08-02 06:20:17 +00:00
John McCall
fcf5d9ff74 I am the code owner for Clang's IR generation; this has been true 
for awhile, but it's good to make this official.  

Just to be clear, Doug and Ted "elected" me to this position.

Might as well add myself to the credits list while I'm at it.

llvm-svn: 136673
 2011-08-02 01:38:19 +00:00
Eli Friedman
22875e2d35 Minor wording tweak for memory model. 
llvm-svn: 136668
 2011-08-02 01:15:34 +00:00
Roman Divacky
cda7c35eaf Fix a typo. 
llvm-svn: 136646
 2011-08-01 20:38:27 +00:00
Bill Wendling
108ce4478d Fix some validation errors. 
llvm-svn: 136591
 2011-07-31 06:47:33 +00:00
Bill Wendling
3f24afed54 Fix some validation errors. 
llvm-svn: 136590
 2011-07-31 06:45:03 +00:00
Bill Wendling
8a625cebd2 Add the 'resume' instruction for the new EH rewrite. 
This adds the 'resume' instruction class, IR parsing, and bitcode reading and
writing. The 'resume' instruction resumes propagation of an existing (in-flight)
exception whose unwinding was interrupted with a 'landingpad' instruction (to be
added later).

llvm-svn: 136589
 2011-07-31 06:30:59 +00:00
Bill Wendling
57ddbb84ac Revert r136253, r136263, r136269, r136313, r136325, r136326, r136329, r136338, 
r136339, r136341, r136369, r136387, r136392, r136396, r136429, r136430, r136444,
r136445, r136446, r136253 pending review.

llvm-svn: 136556
 2011-07-30 05:42:50 +00:00
Eli Friedman
f6797ffc9a LangRef and basic memory-representation/reading/writing for 'cmpxchg' and 
'atomicrmw' instructions, which allow representing all the current atomic
rmw intrinsics.

The allowed operands for these instructions are heavily restricted at the
moment; we can probably loosen it a bit, but supporting general
first-class types (where it makes sense) might get a bit complicated,
given how SelectionDAG works.

As an initial cut, these operations do not support specifying an alignment,
but it would be possible to add if we think it's useful. Specifying an
alignment lower than the natural alignment would be essentially
impossible to support on anything other than x86, but specifying a greater
alignment would be possible.  I can't think of any useful optimizations which
would use that information, but maybe someone else has ideas.

Optimizer/codegen support coming soon.

llvm-svn: 136404
 2011-07-28 21:48:00 +00:00
Bill Wendling
b20cfdfe95 Merge the contents from exception-handling-rewrite to the mainline. 
This adds the new instructions 'landingpad' and 'resume'.

llvm-svn: 136253
 2011-07-27 20:18:04 +00:00
Devang Patel
cd7dd596b2 Update document listing DIVariable elements to reflect recent changes. 
llvm-svn: 136228
 2011-07-27 18:14:50 +00:00
Bill Wendling
470df5ce10 Fix a typo. 
llvm-svn: 136133
 2011-07-26 20:42:28 +00:00
Andrew Trick
0219419a01 Updating stale documentation on regalloc modes. 
llvm-svn: 136112
 2011-07-26 18:31:49 +00:00
Bill Wendling
82fa07e47a Clean up the HTML here a bit. 
llvm-svn: 136074
 2011-07-26 10:41:15 +00:00