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5080 Commits

Author SHA1 Message Date
Dan Gohman
41f9d24d52 Fix a bug that prevented x86-64 from using rep.movsq for 
8-byte-aligned data.

llvm-svn: 49571
 2008-04-12 02:35:39 +00:00
Evan Cheng
6e52146f16 If a PHI node has a single implicit_def source, replace it with an implicit_def instead of a copy. 
llvm-svn: 49543
 2008-04-11 17:54:45 +00:00
Owen Anderson
15e930588a Add testcase for PR2213. 
llvm-svn: 49517
 2008-04-11 05:13:32 +00:00
Evan Cheng
56ca7e285a New test. 
llvm-svn: 49514
 2008-04-10 23:49:09 +00:00
Dan Gohman
318d9a6605 Teach InstCombine's ComputeMaskedBits to handle pointer expressions 
in addition to integer expressions. Rewrite GetOrEnforceKnownAlignment
as a ComputeMaskedBits problem, moving all of its special alignment
knowledge to ComputeMaskedBits as low-zero-bits knowledge.

Also, teach ComputeMaskedBits a few basic things about Mul and PHI
instructions.

This improves ComputeMaskedBits-based simplifications in a few cases,
but more noticeably it significantly improves instcombine's alignment
detection for loads, stores, and memory intrinsics.

llvm-svn: 49492
 2008-04-10 18:43:06 +00:00
Evan Cheng
6f164e3814 A copy instruction may use a register multiple times on some targets. Change them all. 
llvm-svn: 49491
 2008-04-10 18:38:47 +00:00
Chris Lattner
3b289289a7 Fix the x86-64 side of PR2108 by adding a v2f64 version of 
MOVZQI2PQIrr.  This would be better handled as a dag combine 
(with the goal of eliminating the bitconvert) but I don't know
how to do that safely.  Thoughts welcome.

llvm-svn: 49463
 2008-04-10 05:13:43 +00:00
Evan Cheng
1803e20a62 Teach branch folding pass about implicit_def instructions. Unfortunately we can't just eliminate them since register scavenger expects every register use to be defined. However, we can delete them when there are no intra-block uses. Carefully removing some implicit def's which enable more blocks to be optimized away. 
llvm-svn: 49461
 2008-04-10 02:32:10 +00:00
Evan Cheng
def576f9e6 - More aggressively coalescing away copies whose source is defined by an implicit_def. 
- Added insert_subreg coalescing support.

llvm-svn: 49448
 2008-04-09 20:57:25 +00:00
Chris Lattner
be01a5f699 Generalize getUnaryFloatFunction to handle any FP unary function, automatically 
figuring out the suffix to use.  implement pow(2,x) -> exp2(x).

llvm-svn: 49437
 2008-04-09 17:48:11 +00:00
Chris Lattner
5d0cbe7d22 remove capital letter from test name. 
llvm-svn: 49436
 2008-04-09 17:46:36 +00:00
Owen Anderson
ca7e0e21f3 Factor a bunch of functionality related to memcpy and memset transforms out of 
GVN and into its own pass.

llvm-svn: 49419
 2008-04-09 08:23:16 +00:00
Evan Cheng
f35cc57821 Missed a hasInterval check. 
llvm-svn: 49415
 2008-04-09 01:30:15 +00:00
Chris Lattner
976ea8990e many cleanups to the pow optimizer. Allow it to handle powf, 
add support for  pow(x, 2.0) -> x*x.

llvm-svn: 49411
 2008-04-09 00:07:45 +00:00
Duncan Sands
b430cf3b7c Check that bodies and calls but not declarations 
are marked nounwind when compiling without
-fexceptions.

llvm-svn: 49393
 2008-04-08 19:31:52 +00:00
Dale Johannesen
5ac0a0ed21 Rename -disable-required-unwind-tables to -unwind-tables-optional. 
llvm-svn: 49391
 2008-04-08 18:10:08 +00:00
Gabor Greif
80acb912a9 merge r48768 from branches/ggreif/parallelized-test 
llvm-svn: 49382
 2008-04-08 15:22:41 +00:00
Dale Johannesen
576a7685f2 Missed one. 
llvm-svn: 49365
 2008-04-08 00:14:59 +00:00
Dale Johannesen
3f992b224e Add -disable-required-unwind-tables to tests 
that need it (usually, grepping for some string
found in unwind info)

llvm-svn: 49364
 2008-04-08 00:14:17 +00:00
Duncan Sands
79af9d68ec Testcase for pr2169. 
llvm-svn: 49344
 2008-04-07 17:03:16 +00:00
Evan Cheng
6c58f2397d Fix test. 
llvm-svn: 49343
 2008-04-07 17:02:18 +00:00
Chris Lattner
f88214caca fix this testcase to pass and remove a duplicate instance of itself. 
llvm-svn: 49281
 2008-04-06 21:39:17 +00:00
Torok Edwin
34e6889671 Prefer to expand mask for xor to -1, so we have a chance to turn it into a not. 
If it cannot be expanded, it will keep the old behaviour and try to shrink the constant.
Part of enhancement for PR2191.

llvm-svn: 49280
 2008-04-06 21:23:02 +00:00
Evan Cheng
d7d1c94e67 1. IMPLICIT_DEF can *re-define* any register. 
2. Coalescer can now create an interesting situation where a register def can
   reaches itself without being killed.

llvm-svn: 49246
 2008-04-05 01:27:09 +00:00
Evan Cheng
4d7b2ab16f Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps. 
llvm-svn: 49244
 2008-04-05 00:30:36 +00:00
Evan Cheng
f045d86660 New test case. 
llvm-svn: 49190
 2008-04-03 21:25:03 +00:00
Dale Johannesen
ebfa6edc65 Testcase for EH with functions whose names are stripped. 
llvm-svn: 49111
 2008-04-02 20:16:41 +00:00
Dan Gohman
168b2b1300 Speculatively micro-optimize memory-zeroing calls on Darwin 10. 
llvm-svn: 49048
 2008-04-01 20:38:36 +00:00
Evan Cheng
c2f298f318 More soft fp fixes. 
llvm-svn: 49016
 2008-04-01 02:18:22 +00:00
Evan Cheng
a38ae9c502 Unbreak ARM / Thumb soft FP support. 
llvm-svn: 49012
 2008-04-01 01:50:16 +00:00
Dale Johannesen
d9a5b77269 Mark functions in some tests as 'nounwind'. Generating 
EH info for these functions causes the tests to fail for
random reasons (e.g. looking for 'or' or counting lines
with asm-printer; labels count as lines.)

llvm-svn: 49003
 2008-03-31 23:20:09 +00:00
Evan Cheng
a3ce7b4c76 It's not safe to fold a load from GV stub or constantpool into a two-address use. 
llvm-svn: 49002
 2008-03-31 23:19:51 +00:00
Dan Gohman
f223eaafcd Fix a DAGCombiner optimization to respect volatile qualification. 
llvm-svn: 48994
 2008-03-31 20:32:52 +00:00
Chris Lattner
12cecbbb25 add a testcase for forming memset from noncontiguous stores. 
llvm-svn: 48938
 2008-03-29 04:51:35 +00:00
Dan Gohman
227e702cae Fix a tokenfactor node to use the load chain rather than the 
load value. This fixes PR2177.

llvm-svn: 48932
 2008-03-28 23:45:16 +00:00
Devang Patel
0951d2a8d3 add another testcase 
llvm-svn: 48881
 2008-03-27 17:13:55 +00:00
Devang Patel
a04c63181f New test case. 
llvm-svn: 48858
 2008-03-27 01:51:31 +00:00
Evan Cheng
6cbce6b602 Fix a memory bug: increment an iterator of a deleted machine instr. 
llvm-svn: 48853
 2008-03-27 01:27:25 +00:00
Erick Tryzelaar
0efea4df76 Expose ExecutionEngine::getTargetData() to c and ocaml bindings. 
llvm-svn: 48851
 2008-03-27 00:27:14 +00:00
Evan Cheng
6fc37c8f25 One more coalescer fix wrt deadness propagation. 
llvm-svn: 48837
 2008-03-26 20:15:49 +00:00
Evan Cheng
8d222d6221 Avoid commuting a def MI in order to coalesce a copy instruction away if any use of the same val# is a copy instruction that has already been coalesced. 
llvm-svn: 48833
 2008-03-26 19:03:01 +00:00
Dale Johannesen
8c1e95810f Use ## for comment delimiter on darwin x86-32, so 
llvm's output .s files will go through gcc -std=c99
without triggering preprocesser errors.  Approach
suggested by Daveed Vandevoorde.

llvm-svn: 48808
 2008-03-25 23:29:30 +00:00
Evan Cheng
8cb64d8e8b Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
llvm-svn: 48792
 2008-03-25 20:08:07 +00:00
Evan Cheng
563b265f37 Handle a special case xor undef, undef -> 0. Technically this should be transformed to undef. But this is such a common idiom (misuse) we are going to handle it. 
llvm-svn: 48791
 2008-03-25 20:07:13 +00:00
Dan Gohman
58ad056286 Add CMP32mr and friends to the load-unfolding table. Among 
other things, this allows the scheduler to unfold a load operand
in the 2008-01-08-SchedulerCrash.ll testcase, so it now successfully
clones the comparison to avoid a pushf+popf.

llvm-svn: 48777
 2008-03-25 16:53:19 +00:00
Gordon Henriksen
2d762e28e9 Tests for the instruction iterator bindings. 
llvm-svn: 48775
 2008-03-25 16:35:08 +00:00
Tanya Lattner
b6a27ed83f Byebye llvm-upgrade! 
llvm-svn: 48762
 2008-03-25 04:26:08 +00:00
Evan Cheng
7c1dcd8371 lastRegisterUse() should ignore identity copies. Those will be erased. 
llvm-svn: 48759
 2008-03-25 02:02:19 +00:00
Devang Patel
a7084b048f check struct layout 
llvm-svn: 48758
 2008-03-25 00:47:49 +00:00
Bill Wendling
2097b72649 Use the bit size of the operand instead of the hard-coded 32 to generate the 
mask.

llvm-svn: 48750
 2008-03-24 23:16:37 +00:00