d6adbb6a0f
Do not apply the transformation if the target does not support DestTy natively.
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llvm-svn: 55433
2008-08-27 20:55:23 +00:00
cf7ca5d0ba
Fix typos and whitespaces. Other cosmetic changes based on feedback.
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llvm-svn: 55424
2008-08-27 17:50:18 +00:00
b39e0decf8
Put a heuristic in place to prevent GVN from falling into bad cases with massively complicated CFGs.
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This speeds up a particular testcase from 12+ hours to 5 seconds with little perceptible loss of quality.
llvm-svn: 55391
2008-08-26 22:07:42 +00:00
4310d39844
If IV is used in a int-to-float cast inside the loop then try to eliminate the cast operation.
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llvm-svn: 55374
2008-08-26 17:57:54 +00:00
add44f3fb7
improve encapsulation of the BBExecutable set.
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llvm-svn: 55271
2008-08-23 23:39:31 +00:00
65938fc69a
Switch an assortment of maps, sets and vectors to more efficient versions,
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patch contributed by m-s!
llvm-svn: 55270
2008-08-23 23:36:38 +00:00
0c19df4871
Switch the asmprinter (.ll) and all the stuff it requires over to
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use raw_ostream instead of std::ostream. Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).
Other interesting changes:
1) This makes Value::print be non-virtual.
2) AP[S]Int and ConstantRange can no longer print to ostream directly,
use raw_ostream instead.
3) This fixes a bug in raw_os_ostream where it didn't flush itself
when destroyed.
4) This adds a new SDNode::print method, instead of only allowing "dump".
A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream
versions.
This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.
llvm-svn: 55263
2008-08-23 22:23:09 +00:00
20abc419e5
Add a new trivial -inst-namer pass which makes it possible to diff the
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before/after effects of a pass, crazy!
llvm-svn: 55230
2008-08-23 06:07:02 +00:00
3f972c9150
Fix PR2423 by checking all indices for out of range access, not only
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indices that start with an array subscript. x->field[10000] is just
as bad as (*X)[14][10000].
llvm-svn: 55226
2008-08-23 05:21:06 +00:00
5fc8ab6d18
consolidate DenseMapInfo implementations, and add one for std::pair.
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Patch contributed by m-s.
llvm-svn: 55167
2008-08-22 05:08:25 +00:00
99f4558117
Revert r54876 r54877 r54906 and r54907. Evan found that these caused a 20%
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slowdown in bzip2.
llvm-svn: 55113
2008-08-21 05:56:10 +00:00
f5a7e51c81
Silence a compiler warning.
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llvm-svn: 55087
2008-08-20 23:36:48 +00:00
1b2c061b73
Fixed shuffle optimizations to handle non power of 2 vectors
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llvm-svn: 55035
2008-08-20 02:23:25 +00:00
57693dda1d
don't use the result of WriteAsOperand
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llvm-svn: 54979
2008-08-19 04:45:19 +00:00
75d4a83f2f
Make this comment clearer. Instead of using an ambiguous ~ (not) on an icmp
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predicate, swap the order of the operands.
llvm-svn: 54907
2008-08-17 20:02:02 +00:00
53b44029d6
Consider the case where xor by -1 and xor by 128 have been combined already to
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produce an xor by 127.
llvm-svn: 54906
2008-08-17 19:58:24 +00:00
d930f913e6
Rename some GC classes so that their roll will hopefully be clearer.
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In particular, Collector was confusing to implementors. Several
thought that this compile-time class was the place to implement
their runtime GC heap. Of course, it doesn't even exist at runtime.
Specifically, the renames are:
Collector -> GCStrategy
CollectorMetadata -> GCFunctionInfo
CollectorModuleMetadata -> GCModuleInfo
CollectorRegistry -> GCRegistry
Function::getCollector -> getGC (setGC, hasGC, clearGC)
Several accessors and nested types have also been renamed to be
consistent. These changes should be obvious.
llvm-svn: 54899
2008-08-17 18:44:35 +00:00
5dabe042a6
Revert 54821. It's miscompiling 252.eon and 447.dealII
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llvm-svn: 54878
2008-08-17 08:07:31 +00:00
18c6f56c76
I found a better place for this optz'n.
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llvm-svn: 54877
2008-08-17 07:54:14 +00:00
18f50b2637
Xor'ing both sides of icmp by sign-bit is equivalent to swapping signedness of
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the predicate.
Also, make this optz'n apply in more cases where it's safe to do so.
llvm-svn: 54876
2008-08-17 07:34:14 +00:00
17f7165f84
Rework the routines that convert AP[S]Int into a string. Now, instead of
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returning an std::string by value, it fills in a SmallString/SmallVector
passed in. This significantly reduces string thrashing in some cases.
More specifically, this:
- Adds an operator<< and a print method for APInt that allows you to
directly send them to an ostream.
- Reimplements APInt::toString to be much simpler and more efficient
algorithmically in addition to not thrashing strings quite as much.
This speeds up llvm-dis on kc++ by 7%, and may also slightly speed up the
asmprinter. This also fixes a bug I introduced into the asmwriter in a
previous patch w.r.t. alias printing.
llvm-svn: 54873
2008-08-17 07:19:36 +00:00
affe0267f8
Remove GCSE, ValueNumbering, and LoadValueNumbering. These have been deprecated for almost a year; it's finally time for them to go away.
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llvm-svn: 54822
2008-08-15 21:31:02 +00:00
f2a03d5a4b
Reapply 54786. Add overflow and number of mantissa bits checks.
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llvm-svn: 54821
2008-08-15 21:21:34 +00:00
86834d29f3
Revert 54786. It's not checking for overflows, etc.
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llvm-svn: 54813
2008-08-15 08:12:11 +00:00
1d23915a8f
use smallvector instead of vector for a couple worklists. This speeds up instcombine
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by ~10% on some testcases.
llvm-svn: 54811
2008-08-15 04:03:01 +00:00
861bec78f8
Temporarily revert r54792. It's causing an ICE during bootstrapping.
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llvm-svn: 54804
2008-08-14 23:05:24 +00:00
52dc07b01a
Use DenseMap. Patch by Pratik Solanki.
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llvm-svn: 54792
2008-08-14 21:31:10 +00:00
054a833dd4
If IV is used in a int-to-float cast inside the loop then try to eliminate the cast opeation.
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llvm-svn: 54786
2008-08-14 20:58:31 +00:00
8de6d22392
Use empty() instead of begin() == end().
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llvm-svn: 54780
2008-08-14 18:13:49 +00:00
4801bd41cf
Replace two for loops with while(!X->use_empty()) loops. This prevents
...
invalidating the iterator by deleting the current use. This fixes a segfault on
64 bit linux reported in PR2675.
Also remove an unneeded if.
llvm-svn: 54778
2008-08-14 15:03:05 +00:00
6134fbccef
Fix a bogus srem rule - a negative value srem'd by a power-of-2
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can have a non-negative result; for example, -16%16 is 0. Also,
clarify the related comments. This fixes PR2670.
llvm-svn: 54767
2008-08-13 23:12:35 +00:00
8ded5d5884
Fix SCCP's handling of struct value loads and stores. SCCP doesn't
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track individual leaf values in such cases, so it needs to treat
struct values as normal values in this case.
llvm-svn: 54760
2008-08-13 21:22:48 +00:00
6369a798ba
Rename. s/FindIVForUser/FindIVUserForCond/g
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llvm-svn: 54754
2008-08-13 20:31:11 +00:00
97387e6615
Check sign to detect overflow before changing compare stride.
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llvm-svn: 54710
2008-08-13 02:05:14 +00:00
f21a38700f
Remove tabs.
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llvm-svn: 54707
2008-08-12 23:15:44 +00:00
2aa0ff27aa
Implement support for simplifying vector comparisons by 0.0 and 1.0 like we
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do for scalars. Patch contributed by Nicolas Capens
This also generalizes the previous xforms to work on long double, now that
isExactlyValue works for long double.
llvm-svn: 54653
2008-08-11 22:06:05 +00:00
5927883970
Have IRBuilder take a template argument on whether or not to preserve
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names. This can save a lot of allocations if you aren't going to be
looking at the output.
llvm-svn: 54546
2008-08-08 19:39:37 +00:00
75b4fc2c84
Let SRETPromotion properly preserve the function name instead of (implicitly)
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postfixing it with a number.
llvm-svn: 54468
2008-08-07 16:01:23 +00:00
d6c1c8a974
Fix SRETPromotion, it was generating functions without returns statements since
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r53941 (but this was not noticed due to the lack of a basic test for
SRETPromotion).
llvm-svn: 54467
2008-08-07 15:58:09 +00:00
41536988dd
Add some debug output to SRETPromotion.
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llvm-svn: 54464
2008-08-07 15:14:04 +00:00
ac22cfcae9
Fix a shufflevector instcombine that was emitting invalid masks indices
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when it meant to be emitting undef indices.
llvm-svn: 54417
2008-08-06 18:17:32 +00:00
907dc2bc37
Fix PR2355: bug in ChangeCompareStride. When the loop termination compare is the only use of its iv stride, the stride can be eliminated by moving it to another stride. If the scale is negative, swap the predicate instead of using a inverse predicate.
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llvm-svn: 54415
2008-08-06 18:04:43 +00:00
f5b353c1fd
optimize a common idiom generated by clang for bitfield access, PR2638.
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llvm-svn: 54408
2008-08-06 07:35:52 +00:00
7bdaecb7f4
Zap sitofp/fptoui pairs. In all cases when the sign difference
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matters, the result is undefined anyway.
llvm-svn: 54396
2008-08-06 05:13:06 +00:00
bf42893567
Reinstate this optimization, but without the miscompile. Thanks to Bill for
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tracking down that this was breaking llvm-gcc bootstrap on Linux.
llvm-svn: 54394
2008-08-06 04:54:03 +00:00
1fcc804cfd
Pass the computed iteration count value to RewriteLoopExitValues
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instead of having it call getIterationCount again.
llvm-svn: 54380
2008-08-05 22:34:21 +00:00
ee12a7aeff
Revert r53282. This was causing a miscompile on Linux. Also, the transformation
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looks bogus. Please see PR2629 for details on why this is breaking things.
llvm-svn: 54372
2008-08-05 21:23:45 +00:00
3da016d137
Trim #includes.
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llvm-svn: 54350
2008-08-05 15:32:23 +00:00
c1e48b582d
Fix comment typos.
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llvm-svn: 54266
2008-08-01 12:23:49 +00:00
fecbc8cff1
Add vector shifts to the IR, patch by Eli Friedman.
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CodeGen & Clang work coming next.
llvm-svn: 54161
2008-07-29 15:49:41 +00:00
Devang Patel