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Author SHA1 Message Date
Bill Wendling
488a7187b4 When the visitSub method was split into visitSub and visitFSub, this xform was 
added to the FSub version. However, the original version of this xform guarded
against doing this for floating point (!Op0->getType()->isFPOrFPVector()).

This is causing LLVM to perform incorrect xforms for code like:

void func(double *rhi, double *rlo, double xh, double xl, double yh, double yl){
  double mh, ml;
  double c = 134217729.0;
  double up, u1, u2, vp, v1, v2;
        
  up = xh*c;
  u1 = (xh - up) + up;
  u2 = xh - u1;
        
  vp = yh*c;
  v1 = (yh - vp) + vp;
  v2 = yh - v1;
        
  mh = xh*yh;
  ml = (((u1*v1 - mh) + (u1*v2)) + (u2*v1)) + (u2*v2);
  ml += xh*yl + xl*yh;
        
  *rhi = mh + ml;
  *rlo = (mh - (*rhi)) + ml;
}

The last line was optimized away, but rl is intended to be the difference
between the infinitely precise result of mh + ml and after it has been rounded
to double precision.

llvm-svn: 93369
 2010-01-13 23:23:17 +00:00
Tobias Grosser
fc9e55b439 Add getSource() to SuccIterator 
Get the source BB of an iterator.

llvm-svn: 93364
 2010-01-13 22:21:43 +00:00
Tobias Grosser
44e38a98c5 Extend SuccIterator 
Implement most of the missing methods to make SuccIterator random access.
operator[] is still missing.

llvm-svn: 93363
 2010-01-13 22:21:28 +00:00
Chris Lattner
b5605b72b7 this test requires SSE, thanks to jyasskin for pointing this out. 
llvm-svn: 93360
 2010-01-13 21:51:41 +00:00
Chris Lattner
e73ff5ecc3 makeNameProper is now private! 
llvm-svn: 93357
 2010-01-13 21:31:39 +00:00
Chris Lattner
4ce6464609 fix ELF section mangling stuff for weak symbols to not use 
obsolete Mangler interfaces.

llvm-svn: 93356
 2010-01-13 21:29:21 +00:00
Victor Hernandez
55e8dacfed Fix comment typo 
llvm-svn: 93355
 2010-01-13 21:25:04 +00:00
Chris Lattner
c073f1009a tidy 
llvm-svn: 93352
 2010-01-13 21:21:29 +00:00
Chris Lattner
4dcb71cc65 reduce duplicate mangling logic by using MCSymbol::printMangledName. 
llvm-svn: 93351
 2010-01-13 21:12:34 +00:00
Chris Lattner
9498bee8a3 expose a static function as a static method on the MCSymbol class. 
llvm-svn: 93350
 2010-01-13 21:09:59 +00:00
Johnny Chen
08c211683b Fixed a couple of places for Thumb MOV where encoding bits are underspecified. 
llvm-svn: 93349
 2010-01-13 21:00:26 +00:00
Jakob Stoklund Olesen
27e36e52f5 Fix pasto 
llvm-svn: 93342
 2010-01-13 19:54:39 +00:00
Chris Lattner
6d1ddfeff2 stop the CBE from using deprecated Mangler stuff. 
llvm-svn: 93341
 2010-01-13 19:54:07 +00:00
Victor Hernandez
d250df09f5 Write function-local metadata as a metadata subblock of a funciton block 
llvm-svn: 93339
 2010-01-13 19:37:33 +00:00
Victor Hernandez
9938929f1f Enumerate function-local metadata (and its types and operands) only during function-incorporation, global metadata continues to be enumerated during creation of ValueEnumerator 
llvm-svn: 93338
 2010-01-13 19:36:16 +00:00
Victor Hernandez
4e63ccc1c3 Parse function-local metadata inside function blocks 
llvm-svn: 93337
 2010-01-13 19:34:08 +00:00
Chris Lattner
b255aee77a Use the GV version of getNameWithPrefix in TargetLoweringObjectFileCOFF:: 
SelectSectionForGlobal, unbreaking weak globals with no-name.

llvm-svn: 93336
 2010-01-13 19:19:17 +00:00
Evan Cheng
0fa1e2d063 Commit some changes I had managed to lose last night while refactoring the code. Avoid change use of PHI instructions because it's not legal to insert any instructions before them. 
This fixes PR6027.

llvm-svn: 93335
 2010-01-13 19:16:39 +00:00
Chris Lattner
10021a1e25 just finish MCizing FnStubInfo which cleans it up and simplifies it. 
llvm-svn: 93334
 2010-01-13 19:13:16 +00:00
Chris Lattner
5c38b08b40 don't call getNameWithPrefix repeatedly and unnecesarily. 
llvm-svn: 93333
 2010-01-13 19:05:36 +00:00
Chris Lattner
6b0af1d420 properly use MCSymbol to print the strings aquired from getNameWithPrefix. 
llvm-svn: 93332
 2010-01-13 19:00:57 +00:00
Benjamin Kramer
5db856d384 Introduce Twine::toStringRef, a variant of toVector which avoids the copy if the 
twine can be represented as a single StringRef. Use the new methode to simplify
some twine users.

llvm-svn: 93317
 2010-01-13 12:45:23 +00:00
Evan Cheng
2afc417122 Re-enable extension optimization pass. 
llvm-svn: 93313
 2010-01-13 08:45:40 +00:00
Chris Lattner
d63a5fea41 upgrade and MC'ize a few uses of makeNameProper. 
llvm-svn: 93310
 2010-01-13 08:08:33 +00:00
Chris Lattner
34047fe59f MC'ize this a bit and upgrade APIs 
llvm-svn: 93309
 2010-01-13 08:04:24 +00:00
Chris Lattner
29a0ff2e70 add a fixme, ELF MCSection isn't quite right and weak unnamed globals are broken 
on linux (even though they are pointless, they shouldn't ICE).

llvm-svn: 93308
 2010-01-13 08:02:14 +00:00
Evan Cheng
98af245e5f For now, avoid issuing extract_subreg to reuse lower 8-bit, it's not safe in 32-bit. 
llvm-svn: 93307
 2010-01-13 08:01:32 +00:00
Evan Cheng
f6f274ef64 Add comment; refactor; avoid pulling in DT if it's not used. 
llvm-svn: 93306
 2010-01-13 07:59:13 +00:00
Chris Lattner
f2090cf7fd eliminate some uses of Mangler::makeNameProper. 
llvm-svn: 93305
 2010-01-13 07:56:59 +00:00
Chris Lattner
ba8b3ed4f1 don't add the \1 to the name. 
llvm-svn: 93304
 2010-01-13 07:50:21 +00:00
Chris Lattner
1b6c061cd0 remove uses of deprecated functions, this generates slightly 
different BlockAddress labels, but nothing semantically important.

Add a FIXME that BlockAddress codegen is broken if the LLVM BB has 
an empty name (e.g. strip was run).

llvm-svn: 93303
 2010-01-13 07:30:49 +00:00
Chris Lattner
086d0d1a2b use the new form of getNameWithPrefix, not makeNameProper. 
Among other things, this would do very weird things if the 
basic block name had (e.g.) a space in it on darwin:
makeNameProper would add quotes, then the mcsymbol would 
escape the quotes.

llvm-svn: 93302
 2010-01-13 07:16:53 +00:00
Chris Lattner
9c1ca33ac3 add new isSingleStringRef()/getSingleStringRef() methods to twine, 
and use them to avoid a copy of a string in getNameWithPrefix in
the common case.  It seems like Value::setName and other places 
should use this as well?

llvm-svn: 93301
 2010-01-13 07:12:06 +00:00
Chris Lattner
951cfb6b8b ugh, my last patch just sped up a method and changed all the clients 
that I want to completely eliminate.  Add fixme's so I remember this
in the future, and add the missing helper that they should be upgraded
to use instead.

llvm-svn: 93300
 2010-01-13 07:01:09 +00:00
Chris Lattner
3c2fad1fc6 change Mangler::makeNameProper to return its result in a SmallVector 
instead of returning it in an std::string.  Based on this change:

1. Change TargetLoweringObjectFileCOFF::getCOFFSection to take a StringRef
2. Change a bunch of targets to call makeNameProper with a smallstring,
   making several of them *much* more efficient.
3. Rewrite Mangler::makeNameProper to not build names and then prepend
   prefixes, not use temporary std::strings, and to avoid other crimes.

llvm-svn: 93298
 2010-01-13 06:38:18 +00:00
Chris Lattner
23127baf26 my mistake, Mangler::makeNameProper wants to take a twine, not a stringref! 
llvm-svn: 93296
 2010-01-13 05:02:57 +00:00
Chris Lattner
b8f828a848 change makeNameProper to take a stringref instead of std::string. 
llvm-svn: 93295
 2010-01-13 04:55:33 +00:00
Chris Lattner
a8deef7d39 give StringRef a const_iterator member. 
llvm-svn: 93294
 2010-01-13 04:50:20 +00:00
Chris Lattner
e8e56916d1 fix assert in AsmPrinter::EmitGlobalConstantLargeInt to match reality. 
llvm-svn: 93293
 2010-01-13 04:39:46 +00:00
Chris Lattner
633c7a95c5 reduce nesting and code duplication in AsmPrinter::EmitGlobalConstantLargeInt. 
llvm-svn: 93292
 2010-01-13 04:38:16 +00:00
Chris Lattner
4e95cbcd12 reduce indentation and add a fast-path to EmitGlobalConstant for 8-byte 
integers on 64-bit systems.

llvm-svn: 93291
 2010-01-13 04:34:19 +00:00
Chris Lattner
452f5ad8f2 reduce indentation and use early exits in AsmPrinter::EmitConstantValueOnly 
llvm-svn: 93290
 2010-01-13 04:29:19 +00:00
Victor Hernandez
6de2f65f80 Revert 93270 pending investigation of how stray non-constant values end up in ValueEnumerator's ValueList during WriteConstants() 
llvm-svn: 93289
 2010-01-13 03:18:30 +00:00
Evan Cheng
973fceab0c Disable opt-ext pass to unbreak the build for now. 
llvm-svn: 93286
 2010-01-13 01:51:43 +00:00
Evan Cheng
7fcebf982c Remove debug option I accidentally left in. 
llvm-svn: 93285
 2010-01-13 01:43:20 +00:00
Dale Johannesen
ee679ebe05 Fix a comment. 
llvm-svn: 93284
 2010-01-13 01:39:38 +00:00
Ted Kremenek
2d9c86e98b Update CMake file. 
llvm-svn: 93283
 2010-01-13 01:02:47 +00:00
Jakob Stoklund Olesen
2d819b93a2 Remove the JustSP single-register regclass. 
It was only being used by instructions with the t_addrmode_sp addressing mode,
and that is pattern matched in a way that guarantees SP is used. There is
never any register allocation done from this class.

llvm-svn: 93280
 2010-01-13 00:43:06 +00:00
Jeffrey Yasskin
59ca529e20 Try to fix the ARM and PPC buildbots. The -mattr=vector-unaligned-mem 
flag doesn't exist there, and this is an x86 test.

llvm-svn: 93279
 2010-01-13 00:31:43 +00:00
Evan Cheng
76db3bb18e Add a quick pass to optimize sign / zero extension instructions. For targets where the pre-extension values are available in the subreg of the result of the extension, replace the uses of the pre-extension value with the result + extract_subreg. 
For now, this pass is fairly conservative. It only perform the replacement when both the pre- and post- extension values are used in the block. It will miss cases where the post-extension values are live, but not used.

llvm-svn: 93278
 2010-01-13 00:30:23 +00:00