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56ca7e285a
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826 Commits

Author SHA1 Message Date
Evan Cheng
56ca7e285a New test. 
llvm-svn: 49514
 2008-04-10 23:49:09 +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
Evan Cheng
f35cc57821 Missed a hasInterval check. 
llvm-svn: 49415
 2008-04-09 01:30:15 +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
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
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
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
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
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
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
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
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
Evan Cheng
dbdf48276a - SSE4.1 extractfps extracts a f32 into a gr32 register. Very useful! Not. Fix the instruction specification and teaches lowering code to use it only when the only use is a store instruction. 
llvm-svn: 48746
 2008-03-24 21:52:23 +00:00
Dan Gohman
b9c5e6258f APIntify SelectionDAG's EXTRACT_ELEMENT code. 
llvm-svn: 48726
 2008-03-24 16:38:05 +00:00
Bill Wendling
f607f27320 New testcase. 
llvm-svn: 48697
 2008-03-22 22:27:01 +00:00
Evan Cheng
874aee2eec Teach DAG combiner to commute commutable binary nodes in order to achieve sdisel CSE. 
llvm-svn: 48673
 2008-03-22 01:55:50 +00:00
Dan Gohman
59aeac6320 Handle getresult instructions in different basic blocks 
from their aggregate operands by moving the getresult
instructions.

llvm-svn: 48657
 2008-03-21 21:01:32 +00:00
Chris Lattner
8a4fa95cae Add support for calls that return two FP values in 
ST(0)/ST(1).

llvm-svn: 48634
 2008-03-21 06:38:26 +00:00
Chris Lattner
933d0d318b disable a bogus assertion. 
llvm-svn: 48633
 2008-03-21 06:01:05 +00:00
Chris Lattner
260473f983 Enable support for returning two long-double values in ST(0)/ST(1). 
This allows us to compile fp-stack-2results.ll into:

_test:
	fldz
	fld1
	ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.

llvm-svn: 48632
 2008-03-21 05:57:20 +00:00
Evan Cheng
4ae9fee64c Undo 48570. Correctly match mmx shift instructions with an immediate operand. 
llvm-svn: 48627
 2008-03-21 00:40:09 +00:00
Evan Cheng
8ecb189245 Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m))) 
llvm-svn: 48578
 2008-03-20 02:18:41 +00:00
Scott Michel
e747d20130 Add more patterns to match in the integer comparison test harnesses. 
Fix bugs encountered, mostly due to range matching for immediates;
the CellSPU's 10-bit immediates are sign extended, covering a
larger range of unsigned values.

llvm-svn: 48575
 2008-03-20 00:51:36 +00:00
Evan Cheng
6f729b2820 Add intrinsics to match mmx shift builtin's with immediate operand. 
llvm-svn: 48569
 2008-03-19 23:38:52 +00:00
Dan Gohman
c9dec33f3f Add support for multiple return values for the PPC target by 
converting call result lowering to use the CallingConvLowering
infastructure.

llvm-svn: 48552
 2008-03-19 21:39:28 +00:00
Christopher Lamb
958b0494c3 Fix X86's isTruncateFree to not claim that truncate to i1 is free. This fixes Bill's testcase that failed for r48491. 
llvm-svn: 48542
 2008-03-19 08:30:06 +00:00
Evan Cheng
e9aa507edc Fixed a coalescer bug caused by a typo. 
llvm-svn: 48526
 2008-03-19 02:26:36 +00:00
Evan Cheng
3d9309c11d Fix live variables issues: 
1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.

llvm-svn: 48521
 2008-03-19 00:52:20 +00:00
Evan Cheng
5ac87b837e Fix a x86-64 isel lowering bug that's been around forever. A x86-64 varargs function implicitly reads X86::AL, don't clobber it! 
llvm-svn: 48515
 2008-03-18 23:36:35 +00:00
Bill Wendling
c8f3fc7c3d It might be nice to have this run as x86 on non-x86 platforms... 
llvm-svn: 48511
 2008-03-18 22:38:22 +00:00