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69526 Commits

Author SHA1 Message Date
Nick Lewycky fea7ddc735 Most browsers eliminate whitespace between anchor tags. Force whitespace with 
  so that the code reads properly.

llvm-svn: 124514
 2011-01-29 01:09:53 +00:00
Roman Divacky cd9ae95ae7 Error on .code16 instead of producing wrong (32bit) code. 
llvm-svn: 124498
 2011-01-28 19:29:48 +00:00
Duncan Sands e4b4d0c16d This dyn_cast should be a cast. Pointed out by Frits van Bommel. 
llvm-svn: 124497
 2011-01-28 18:53:08 +00:00
Duncan Sands 65995fa2a0 Thread divisions over selects and phis. This doesn't fire much and has basically 
zero effect on the testsuite (it improves two Ada testcases).

llvm-svn: 124496
 2011-01-28 18:50:50 +00:00
Bob Wilson 775eec2280 PR9030: Fix disassembly of ARM "mov pc, lr" instruction. 
Patch by Jyun-Yan You.

llvm-svn: 124492
 2011-01-28 17:50:30 +00:00
Duncan Sands 771e82a863 My auto-simplifier noticed that ((X/Y)*Y)/Y occurs several times in SPEC 
benchmarks, and that it can be simplified to X/Y.  (In general you can only
simplify (Z*Y)/Y to Z if the multiplication did not overflow; if Z has the
form "X/Y" then this is the case).  This patch implements that transform and
moves some Div logic out of instcombine and into InstructionSimplify.
Unfortunately instcombine gets in the way somewhat, since it likes to change
(X/Y)*Y into X-(X rem Y), so I had to teach instcombine about this too.
Finally, thanks to the NSW/NUW flags, sometimes we know directly that "Z*Y"
does not overflow, because the flag says so, so I added that logic too.  This
eliminates a bunch of divisions and subtractions in 447.dealII, and has good
effects on some other benchmarks too.  It seems to have quite an effect on
tramp3d-v4 but it's hard to say if it's good or bad because inlining decisions
changed, resulting in massive changes all over.

llvm-svn: 124487
 2011-01-28 16:51:11 +00:00
Oscar Fuentes e789bdb870 Fix libffi usage when it is on a custom path. 
llvm-svn: 124486
 2011-01-28 16:49:05 +00:00
Roman Divacky 7e9e290952 Add support for parsing .float 
llvm-svn: 124485
 2011-01-28 14:20:32 +00:00
Nick Lewycky cfb284cf96 Rename functions to follow coding standard. Also rejiggers comments. No 
functionality change.

llvm-svn: 124482
 2011-01-28 08:43:14 +00:00
Nick Lewycky aaf401241a Add a doxygen comment for this class. 
llvm-svn: 124480
 2011-01-28 08:19:00 +00:00
Nick Lewycky 564fcca856 Reorder for readability. (Chris, is this what you meant?) 
llvm-svn: 124479
 2011-01-28 07:36:21 +00:00
Evan Cheng aaa9606b2f Revert r124462. There are a few big regressions that I need to fix first. 
llvm-svn: 124478
 2011-01-28 07:12:38 +00:00
Nick Lewycky c5eb3733f7 Reduce the number of functions we look at in the first pass, and preallocate 
the function equality set.

llvm-svn: 124475
 2011-01-28 05:48:15 +00:00
Nick Lewycky db34be0e31 Clean up the tests a little, make sure we match an instruction in the right 
test.

llvm-svn: 124473
 2011-01-28 05:13:17 +00:00
Nick Lewycky 0af77fd45b Fix build with stdcxx by using llvm::next. Patch by Joerg Sonnenberger! 
llvm-svn: 124472
 2011-01-28 04:00:15 +00:00
Rafael Espindola 2f72a84284 Add a triple. 
llvm-svn: 124471
 2011-01-28 03:57:55 +00:00
Nick Lewycky 6593e6eaf6 Add missing include for ptrdiff_t. Patch by Joerg Sonnenberger! 
llvm-svn: 124470
 2011-01-28 03:52:25 +00:00
Nick Lewycky b074e32641 Fold select + select where both selects are on the same condition. 
llvm-svn: 124469
 2011-01-28 03:28:10 +00:00
Rafael Espindola 6c17d54891 Print the visibility of declarations. 
llvm-svn: 124468
 2011-01-28 03:20:10 +00:00
Nico Weber 4ada0d9164 PR8951: Support for .equiv in integrated assembler, patch by Jörg Sonnenberger! 
llvm-svn: 124467
 2011-01-28 03:04:41 +00:00
Evan Cheng 417fca86c4 - Stop simplifycfg from duplicating "ret" instructions into unconditional 
branches. PR8575, rdar://5134905, rdar://8911460.
- Allow codegen tail duplication to dup small return blocks after register
  allocation is done.

llvm-svn: 124462
 2011-01-28 02:19:21 +00:00
Evan Cheng bb8420a070 Fix PLD encoding. 
llvm-svn: 124458
 2011-01-27 23:48:34 +00:00
Kevin Enderby e9f2f0cb0b Changed llvm-mc arm target to give an error if .syntax divided is used. Since 
only .syntax unified is supported.

llvm-svn: 124454
 2011-01-27 23:22:36 +00:00
Bob Wilson f9bab3a47a Fix a comment typo. 
llvm-svn: 124450
 2011-01-27 23:08:52 +00:00
Oscar Fuentes 800a2afbb3 Use the paths to libffi's header and library even when no custom 
location was stated with FFI_INCLUDE_DIR/FFI_LIBRARY_DIR.

llvm-svn: 124449
 2011-01-27 22:58:34 +00:00
David Greene 34f7c0d8aa [AVX] Clean up the code to configure target lowering for AVX. Specify 
how to lower more/new operations.  This is a prerequisite for adding
additional AVX lowering.

llvm-svn: 124447
 2011-01-27 22:38:56 +00:00
Andrew Trick c0ca67601a Remove a temporary workaround for a lencod miscompile. Depends on the fix in r124442. 
llvm-svn: 124443
 2011-01-27 21:28:51 +00:00
Andrew Trick 13bb644fdd VirtRegRewriter fix: update kill flags, which are used by the scavenger. 
rdar://problem/8893967: JM/lencod miscompile at -arch armv7 -mthumb -O3

Added ResurrectKill to remove kill flags after we decide to reused a
physical register. And (hopefully) ensure that we call it in all the
right places.

Sorry, I'm not checking in a unit test given that it's a miscompile I
can't reproduce easily with a toy example. Failures in the rewriter
depend on a series of heuristic decisions maked during one of the many
upstream phases in codegen. This case would require coercing regalloc
to generate a couple of rematerialzations in a way that causes the
scavenger to reuse the same register at just the wrong point.

The general way to test this is to implement kill flags
verification. Then we could have a simple, robust compile-only unit
test. That would be worth doing if the whole pass was not about to
disappear. At this point we focus verification work on the next
generation of regalloc.

llvm-svn: 124442
 2011-01-27 21:26:43 +00:00
Douglas Gregor dd02d62594 Clang: separate the access-control diagnostics from other diagnostics that do not have SFINAE behavior. 
llvm-svn: 124440
 2011-01-27 21:06:17 +00:00
Benjamin Kramer 57e3d65884 Unbreak the build. 
llvm-svn: 124426
 2011-01-27 20:30:54 +00:00
Nick Lewycky e2d46d30ae Expound upon this comparison! 
llvm-svn: 124406
 2011-01-27 19:51:31 +00:00
Nick Lewycky 5a37e950e1 Use dyn_cast instead of isa+cast. 
llvm-svn: 124404
 2011-01-27 19:42:43 +00:00
Oscar Fuentes 632ad9bfe6 Don't show -pedantic, -W and -Wall on the output of 
llvm-config --cflags --cxxflags --cppflags

We shouldn't impose those flags on people who use llvm-config for
building their own projects.

llvm-svn: 124399
 2011-01-27 19:29:48 +00:00
Devang Patel 1cec755494 Speculatively revert r124380. 
llvm-svn: 124397
 2011-01-27 19:15:01 +00:00
Devang Patel 3b266a2780 While legalizing SDValues do not drop SDDbgValues, trasfer them to new legal nodes. 
Take 2. This includes fix for dragonegg crash.

llvm-svn: 124380
 2011-01-27 17:43:53 +00:00
Roman Divacky ed5efb4053 Add support for specifying register name in cfi-register/offset/def 
as well as register number.

llvm-svn: 124379
 2011-01-27 17:16:37 +00:00
Roman Divacky 36b1b47c5a Introduce virtual ParseRegister method in TargetAsmParser. 
Create override of this method in X86/ARM/MBlaze.

llvm-svn: 124378
 2011-01-27 17:14:22 +00:00
Jay Foad 9f32cfd35e Fix indentation. 
llvm-svn: 124375
 2011-01-27 14:44:55 +00:00
Nick Lewycky 0c572ebc46 Add DenseSet::resize for API parity with DenseMap::resize. 
llvm-svn: 124370
 2011-01-27 09:10:42 +00:00
Nick Lewycky 13e04aef2a Fix surprising missed optimization in mergefunc where we forgot to consider 
that relationships like "i8* null" is equivalent to "i32* null".

llvm-svn: 124368
 2011-01-27 08:38:19 +00:00
Chris Lattner 2114b762de Don't infinitely recurse! Patch by Marius Wachtler! 
llvm-svn: 124366
 2011-01-27 07:35:27 +00:00
Bob Wilson 2d69fb4184 Avoid modifying the OneClassForEachPhysReg map while iterating over it. 
Linear scan regalloc is currently assuming that any register aliased with
a member of a regclass must also be in at least one regclass.  That is not
always true.  For example, for X86, RIP is in a regclass but IP is not.
If you're unlucky, this can cause a crash by invalidating the iterator.

llvm-svn: 124365
 2011-01-27 07:26:15 +00:00
Eric Christopher ebd8db7d00 Add a testcase for my last checkin. 
llvm-svn: 124358
 2011-01-27 06:01:17 +00:00
Eric Christopher 331cc5218d Use the incoming VT not the VT of where we're trying to store to determine 
if we can store a value. Also, the exclusion is or, not and.

Fixes rdar://8920247.

llvm-svn: 124357
 2011-01-27 05:44:56 +00:00
NAKAMURA Takumi f3e20b9f0f lib/Target/X86/X86ISelDAGToDAG.cpp: __main should be WINCALL64 on Win64. 
CALL64 marks %xmm* as dead.

llvm-svn: 124354
 2011-01-27 03:20:19 +00:00
Matt Beaumont-Gay a148c59231 Try harder to not have unused variables. 
llvm-svn: 124350
 2011-01-27 02:39:27 +00:00
Matt Beaumont-Gay 0cddbf2bdf Opt-mode -Wunused-variable cleanup 
llvm-svn: 124346
 2011-01-27 01:47:50 +00:00
Devang Patel 92b7077f9e Reapply 124301 
llvm-svn: 124339
 2011-01-27 00:13:27 +00:00
Bill Wendling fb4ee9bbde Initialize variable to get rid of clang warning. 
llvm-svn: 124331
 2011-01-26 22:21:35 +00:00
Jay Foad b0c5e35929 Simplify User::operator delete(). 
llvm-svn: 124330
 2011-01-26 21:56:10 +00:00