33281864c1
If a PHI node has a single implicit_def source, replace it with an implicit_def instead of a copy.
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llvm-svn: 49543
2008-04-11 17:54:45 +00:00
499ffa9055
Use of implicit_def is not part of live interval. Create empty intervals for the uses when the live interval is being spilled.
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llvm-svn: 49542
2008-04-11 17:53:36 +00:00
c422383e08
detabify
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llvm-svn: 49524
2008-04-11 09:34:57 +00:00
1e73f29a7f
Fix PR2213 by simultaneously making GVN more aggressive with the return values
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of calls and less aggressive with non-readnone calls.
llvm-svn: 49516
2008-04-11 05:11:49 +00:00
c6864b6652
Remove implicit_def instructions that become dead as result of coalescing.
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llvm-svn: 49513
2008-04-10 23:48:35 +00:00
2cb98eb4bb
Allow registers defined by implicit_def to be clobbered.
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llvm-svn: 49512
2008-04-10 23:47:53 +00:00
9b5ffc8408
Fix a typo in a comment.
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llvm-svn: 49504
2008-04-10 23:02:38 +00:00
53336d8055
Fix for PR2190. Memdep's non-local caching was checking dirtied blocks in the
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wrong order.
llvm-svn: 49499
2008-04-10 22:13:32 +00:00
f4bc782495
Make several symbols static.
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llvm-svn: 49496
2008-04-10 21:11:47 +00:00
99b7b3f03b
Teach InstCombine's ComputeMaskedBits to handle pointer expressions
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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
16ea87d6ee
A copy instruction may use a register multiple times on some targets. Change them all.
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llvm-svn: 49491
2008-04-10 18:38:47 +00:00
5e1971c894
Add comment.
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llvm-svn: 49469
2008-04-10 08:03:14 +00:00
aeb23a8a34
add a note, this is actually not too bad to implement.
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llvm-svn: 49466
2008-04-10 05:54:50 +00:00
c692188075
move the x86-32 part of PR2108 here.
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llvm-svn: 49465
2008-04-10 05:37:47 +00:00
ad75302497
Fix the x86-64 side of PR2108 by adding a v2f64 version of
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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
9d339849ee
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.
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llvm-svn: 49461
2008-04-10 02:32:10 +00:00
a29d2536aa
Disable an xform we've had for a long time, pow(x,0.5) -> sqrt.
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This is not safe for all inputs.
llvm-svn: 49458
2008-04-10 02:07:51 +00:00
c8eeb752a3
- More aggressively coalescing away copies whose source is defined by an implicit_def.
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- Added insert_subreg coalescing support.
llvm-svn: 49448
2008-04-09 20:57:25 +00:00
33b3300178
Make isVectorClearMaskLegal's operand list const.
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llvm-svn: 49446
2008-04-09 20:09:42 +00:00
3d074a3125
Add XMM1 as a second return value register for f32 and f64 on x86-64. This
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is needed for the x86-64-ABI handling of structs that contain floating-point
members that are returned by value.
llvm-svn: 49441
2008-04-09 17:54:37 +00:00
cbf87313a2
Add DX as a second return value register for i16 on x86.
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llvm-svn: 49440
2008-04-09 17:53:38 +00:00
802134fc02
Generalize getUnaryFloatFunction to handle any FP unary function, automatically
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figuring out the suffix to use. implement pow(2,x) -> exp2(x).
llvm-svn: 49437
2008-04-09 17:48:11 +00:00
cca74e5ab9
use the new ConstantFP::get method to make this work with
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long double and simplify the code.
llvm-svn: 49435
2008-04-09 17:17:35 +00:00
a7dfbc0366
Be conservative if getresult operand is neither call nor invoke.
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llvm-svn: 49430
2008-04-09 15:58:24 +00:00
ef9a6fd5c2
Factor a bunch of functionality related to memcpy and memset transforms out of
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GVN and into its own pass.
llvm-svn: 49419
2008-04-09 08:23:16 +00:00
8ee792d1b6
Remove accidentally duplicated code.
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llvm-svn: 49418
2008-04-09 07:55:01 +00:00
98bd939af8
add a simplified accessor for creating an fp constant of a
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particular value but variable type.
llvm-svn: 49416
2008-04-09 06:38:30 +00:00
aa3b55f842
Missed a hasInterval check.
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llvm-svn: 49415
2008-04-09 01:30:15 +00:00
b5b3e3136b
add a version of ConstantFP::get that doesn't take a redundant Type* value,
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start migrating code over to use it.
llvm-svn: 49413
2008-04-09 00:45:01 +00:00
b859fb49ed
many cleanups to the pow optimizer. Allow it to handle powf,
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add support for pow(x, 2.0) -> x*x.
llvm-svn: 49411
2008-04-09 00:07:45 +00:00
4c0c018bc5
Rename -disable-required-unwind-tables to unwind-tables-optional.
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llvm-svn: 49389
2008-04-08 18:07:49 +00:00
57d3a36386
Convenience method for setting the nounwind
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attribute for a function.
llvm-svn: 49373
2008-04-08 07:23:58 +00:00
8cd2a3ae2a
Fix insert point handling for multiple return values.
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llvm-svn: 49367
2008-04-08 02:24:08 +00:00
fe767621ca
Handle the situation in 2008-01-25-EmptyFunction.ll
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correctly when unwind info is being generated.
llvm-svn: 49366
2008-04-08 00:37:56 +00:00
344aec2952
Implement new llc flag -disable-required-unwind-tables.
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Corresponds to -fno-unwind-tables (usually default in gcc).
llvm-svn: 49361
2008-04-08 00:10:24 +00:00
a518bb79b1
Make getDirnameSep a static method (not part of Path's interface).
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llvm-svn: 49354
2008-04-07 22:01:32 +00:00
c042bf1db5
Added method Path::getDirname().
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llvm-svn: 49352
2008-04-07 21:53:57 +00:00
3bc3ddd638
Rename MemOperand to MachineMemOperand. This was suggested by
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review feedback from Chris quite a while ago. No functionality
change.
llvm-svn: 49348
2008-04-07 19:35:22 +00:00
ed92b41a39
Add operator= implementations to SparseBitVector, allowing it to be used in GVN. This results
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in both time and memory savings for GVN. For example, one testcase went from 10.5s to 6s with
this patch.
llvm-svn: 49345
2008-04-07 17:38:23 +00:00
b646062ad5
Fix PR 2169.
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llvm-svn: 49339
2008-04-07 14:20:50 +00:00
813384951e
Use Intrinsic::getDeclaration in more places.
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llvm-svn: 49338
2008-04-07 13:45:04 +00:00
1416ebf1fe
The "stacksave is not nounwind problem" no longer
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needs to be fixed here - a previous commit made sure
that intrinsics always get the right attributes.
So remove no-longer needed code, and while there use
Intrinsic::getDeclaration rather than getOrInsertFunction.
llvm-svn: 49337
2008-04-07 13:43:58 +00:00
fbc6adcc59
Use Intrinsic::getDeclaration to get hold of
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intrinsics. Fix up the argument type (should
be i8*, was an array*).
llvm-svn: 49336
2008-04-07 13:41:19 +00:00
a8ff6ca2e3
Make sure that intrinsics automagically get the
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right parameter attributes no matter how they
are obtained.
llvm-svn: 49335
2008-04-07 13:39:11 +00:00
51f532f92d
Re-commit of the r48822, where the infinite looping problem discovered
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by Dan Gohman is fixed.
llvm-svn: 49330
2008-04-07 10:06:32 +00:00
0c1e634cbb
Make GVN more memory efficient, particularly on code that contains a large number of
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allocations, which GVN can't optimize anyways.
llvm-svn: 49329
2008-04-07 09:59:07 +00:00
87e484f08b
Mark calls to llvm.stacksave, llvm.stackrestore as
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nounwind. When such calls are inlined into something
else that is invoked, they were getting changed to invokes,
which is badness.
llvm-svn: 49299
2008-04-07 00:08:48 +00:00
92f493dc72
regenerate
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llvm-svn: 49293
2008-04-06 23:07:54 +00:00
982e8502c9
fix warnings with assertions disabled.
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llvm-svn: 49285
2008-04-06 21:50:58 +00:00
4db1f62d84
Silence warning when no assertions.
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llvm-svn: 49284
2008-04-06 21:46:45 +00:00
Evan Cheng