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Author SHA1 Message Date
Rafael Espindola
54673ba6ca Don't tell the linker about available_externally definitions. If we do, it will 
complain about duplicated definitions.

llvm-svn: 124634
 2011-02-01 00:41:51 +00:00
Devang Patel
97c467ee47 Keep track of incoming argument's location while emitting LiveIns. 
llvm-svn: 124611
 2011-01-31 21:38:14 +00:00
Devang Patel
23d0acc520 While printing "interesting" breakpoint locations for debug info quality test harness, focus only on entry block's terminator for now. 
llvm-svn: 124610
 2011-01-31 21:36:24 +00:00
Roman Divacky
254f2ab16a Enumerate .code16/32/64 instead of checking .code prefix. This 
unbreaks some ARM tests.

llvm-svn: 124608
 2011-01-31 21:19:43 +00:00
Devang Patel
3ff5f6ad2d Tidy up. 
llvm-svn: 124605
 2011-01-31 21:16:37 +00:00
Devang Patel
bf57c32e2e Focus on arguments for now. 
llvm-svn: 124604
 2011-01-31 21:15:39 +00:00
Roman Divacky
9a8a680ed2 Error on all .code* directives instead of just .code16 as they 
all lead to a silent miscompilation of code.

llvm-svn: 124603
 2011-01-31 20:56:49 +00:00
David Greene
0db8e64017 Fix vector sign extend to put the source and destination types in the 
correct places.

llvm-svn: 124601
 2011-01-31 20:39:01 +00:00
Chris Lattner
1d534245fc add a note, progress unblocked by PR8575 being fixed. 
llvm-svn: 124599
 2011-01-31 20:23:28 +00:00
Oscar Fuentes
d79df5b7c8 Adds some platform checks to cmake/config-ix.cmake and fixes checking 
for dlopen/dlerror.

Patch by arrowdodger!

llvm-svn: 124590
 2011-01-31 18:25:25 +00:00
Richard Osborne
11cdda2346 Fix bug where ReduceLoadWidth was creating illegal ZEXTLOAD instructions. 
llvm-svn: 124587
 2011-01-31 17:41:44 +00:00
NAKAMURA Takumi
826d7183d5 CMake: Fix a few definition to suppress warnings. 
llvm-svn: 124583
 2011-01-31 09:41:20 +00:00
Anton Korobeynikov
b31576ae4d Save a mapping between original and cloned constpool entries. 
llvm-svn: 124570
 2011-01-30 22:07:39 +00:00
Anton Korobeynikov
c608d67509 Clarify the LSDASection NULL check 
llvm-svn: 124569
 2011-01-30 22:07:31 +00:00
Anders Carlsson
f184e5de9a Recognize and simplify 
(A+B) == A  ->  B == 0
A == (A+B)  ->  B == 0

llvm-svn: 124567
 2011-01-30 22:01:13 +00:00
Jakob Stoklund Olesen
430d0693dc Respect the -tail-dup-size command line option even when optimizing for size. 
This is similar to the -unroll-threshold option. There should be no change in
behavior when -tail-dup-size is not explicit on the llc command line.

llvm-svn: 124564
 2011-01-30 20:38:12 +00:00
Duncan Sands
987c8bc759 Commit 124487 broke 254.gap. See if disabling the part that might be triggered 
by PR9088 fixes things.

llvm-svn: 124561
 2011-01-30 18:24:20 +00:00
Duncan Sands
ac01c21937 Transform (X/Y)*Y into X if the division is exact. Instcombine already knows how 
to do this and more, but would only do it if X/Y had only one use.  Spotted as the
most common missed simplification in SPEC by my auto-simplifier, now that it knows
about nuw/nsw/exact flags.  This removes a bunch of multiplications from 447.dealII
and 483.xalancbmk.  It also removes a lot from tramp3d-v4, which results in much
more inlining.

llvm-svn: 124560
 2011-01-30 18:03:50 +00:00
Benjamin Kramer
6b3c3de09a Teach DAGCombine to fold fold (sra (trunc (sr x, c1)), c2) -> (trunc (sra x, c1+c2) when c1 equals the amount of bits that are truncated off. 
This happens all the time when a smul is promoted to a larger type.

On x86-64 we now compile "int test(int x) { return x/10; }" into
  movslq  %edi, %rax
  imulq $1717986919, %rax, %rax
  movq  %rax, %rcx
  shrq  $63, %rcx
  sarq  $34, %rax <- used to be "shrq $32, %rax; sarl $2, %eax"
  addl  %ecx, %eax

This fires 96 times in gcc.c on x86-64.

llvm-svn: 124559
 2011-01-30 16:38:43 +00:00
Nick Lewycky
abfab6156c Fix 'fcmp one' constant folding. Noticed by inspection. 
llvm-svn: 124557
 2011-01-30 01:49:58 +00:00
Nick Lewycky
001e12d8d5 Fix some formatting and upgrade comments from llvm 1.x to 2.x syntax. 
llvm-svn: 124556
 2011-01-30 01:48:50 +00:00
Bill Wendling
481f64ab68 This is #included by .c files. Remove C++-style comments. 
llvm-svn: 124552
 2011-01-29 21:54:26 +00:00
Nick Lewycky
5259b6a6e2 Add the select optimization recently added to instcombine to constant folding. 
This is the one where one of the branches of the select is another select on
the same condition.

llvm-svn: 124547
 2011-01-29 20:35:06 +00:00
Francois Pichet
6aed3c72dc Unbreak the MSVC build. 
The DEBUG() call at line 606 demands to see raw_ostream's definition. I have no idea why this seems to only break MSVC.

llvm-svn: 124545
 2011-01-29 20:06:16 +00:00
Nick Lewycky
67acf52b2e Fix comment. 
llvm-svn: 124544
 2011-01-29 19:55:23 +00:00
Frits van Bommel
b1b70f2a44 Call SimplifyFDivInst() in InstCombiner::visitFDiv(). 
llvm-svn: 124535
 2011-01-29 17:50:27 +00:00
Frits van Bommel
92dc04df67 Move InstCombine's knowledge of fdiv to SimplifyInstruction(). 
llvm-svn: 124534
 2011-01-29 15:26:31 +00:00
Duncan Sands
0587f785bf Fix typo: should have been testing that X was odd, not V. 
llvm-svn: 124533
 2011-01-29 13:27:00 +00:00
Benjamin Kramer
4a40190f76 Add the missing sub identity "A-(A-B) -> B" to DAGCombine. 
This happens e.g. for code like "X - X%10" where we lower the modulo operation
to a series of multiplies and shifts that are then subtracted from X, leading to
this missed optimization.

llvm-svn: 124532
 2011-01-29 12:34:05 +00:00
Evan Cheng
20433f6339 Add a test for TCE return duplication. 
llvm-svn: 124527
 2011-01-29 04:53:35 +00:00
Evan Cheng
4af5487b74 Re-apply r124518 with fix. Watch out for invalidated iterator. 
llvm-svn: 124526
 2011-01-29 04:46:23 +00:00
Evan Cheng
1f943b9b13 Revert r124518. It broke Linux self-host. 
llvm-svn: 124522
 2011-01-29 02:43:04 +00:00
Evan Cheng
a1e4cb5f09 Re-commit r124462 with fixes. Tail recursion elim will now dup ret into unconditional predecessor to enable TCE on demand. 
llvm-svn: 124518
 2011-01-29 01:29:26 +00:00
Andrew Trick
72f17d97f3 Implementation of path profiling. 
Modified patch by Adam Preuss.

This builds on the existing framework for block tracing, edge profiling and optimal edge profiling.
See -help-hidden for new flags.
For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs.

llvm-svn: 124515
 2011-01-29 01:09:53 +00:00
Nick Lewycky
9fe6ef1bed Most browsers eliminate whitespace between anchor tags. Force whitespace with 
&nbsp; so that the code reads properly.

llvm-svn: 124514
 2011-01-29 01:09:53 +00:00
Roman Divacky
82612f08c2 Error on .code16 instead of producing wrong (32bit) code. 
llvm-svn: 124498
 2011-01-28 19:29:48 +00:00
Duncan Sands
07617615f4 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
e788a04c09 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
e7ac2389b2 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
1a18d8df96 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
7f369d093e Fix libffi usage when it is on a custom path. 
llvm-svn: 124486
 2011-01-28 16:49:05 +00:00
Roman Divacky
c6a20d1728 Add support for parsing .float 
llvm-svn: 124485
 2011-01-28 14:20:32 +00:00
Nick Lewycky
f9a384e203 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
edbe62c10d Add a doxygen comment for this class. 
llvm-svn: 124480
 2011-01-28 08:19:00 +00:00
Nick Lewycky
28f2b64333 Reorder for readability. (Chris, is this what you meant?) 
llvm-svn: 124479
 2011-01-28 07:36:21 +00:00
Evan Cheng
5b6c72e549 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
744bd3872f 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
9bbbb3e6f5 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
fdee464a16 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
d93551f227 Add a triple. 
llvm-svn: 124471
 2011-01-28 03:57:55 +00:00