e6b261fec5
Make loop-idiom use TargetLibraryInfo to determine whether it is allowed
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to hack on memset, memcpy etc.
llvm-svn: 125974
2011-02-18 22:22:15 +00:00
5ed962656c
Move library stuff out of the toplevel CMakeLists.txt file.
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llvm-svn: 125968
2011-02-18 22:06:14 +00:00
5bfec69b1d
Add VirtRegMap::rewrite() and use it in the new register allocators.
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The rewriter works almost identically to -rewriter=trivial, except it also
eliminates any identity copies.
This makes the new register allocators independent of VirtRegRewriter.cpp which
will be going away at the same time as RegAllocLinearScan.
llvm-svn: 125967
2011-02-18 22:03:18 +00:00
0e125bb4d0
introduce a new TargetLibraryInfo pass, which transformations can use to
...
query about available library functions. For now this just has
memset_pattern16, which exists on darwin, but it can be extended for a
bunch of other things in the future.
llvm-svn: 125965
2011-02-18 21:50:34 +00:00
8fbe09f160
Reapply r114997 now that the buildbots have been updated.
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llvm-svn: 125960
2011-02-18 21:12:58 +00:00
cdd20affec
Fix style and a typo
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llvm-svn: 125949
2011-02-18 19:49:06 +00:00
9cd43977c3
Add assembly parsing support for "msr" and also fix its encoding. Also add
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testcases for the disassembler to make sure it still works for "msr".
llvm-svn: 125948
2011-02-18 19:45:59 +00:00
c37910ea28
improve support for OpenBSD, patch by Amit Kulkarni!
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llvm-svn: 125943
2011-02-18 17:04:56 +00:00
7c0cb2bbf5
Expose getTypeName to the C API. Patch by Patrick Walton.
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llvm-svn: 125845
2011-02-18 16:35:37 +00:00
84653b3674
Add some transforms of the kind X-Y>X -> 0>Y which are valid when there is no
...
overflow. These subsume some existing equality transforms, so zap those.
llvm-svn: 125843
2011-02-18 16:25:37 +00:00
0281731cc2
add a poor division by constant case.
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llvm-svn: 125832
2011-02-18 05:35:49 +00:00
0a1a36dc46
Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure.
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llvm-svn: 125830
2011-02-18 04:58:10 +00:00
1a924e770a
prevent jump threading from merging blocks when their address is
...
taken (and used!). This prevents merging the blocks (invalidating
the block addresses) in a case like this:
#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
void foo() {
printf("%p\n", _THIS_IP_);
printf("%p\n", _THIS_IP_);
printf("%p\n", _THIS_IP_);
}
which fixes PR4151.
llvm-svn: 125829
2011-02-18 04:43:06 +00:00
8488640da7
hoist GlobalValue::removeDeadConstantUsers up to being a method on Constant.
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llvm-svn: 125828
2011-02-18 04:41:42 +00:00
4a14fbc50c
Don't unroll loops whose header block's address is taken.
...
This is part of a futile attempt to not "break" bizzaro
code like this:
l1:
printf("l1: %p\n", &&l1);
++x;
if( x < 3 ) goto l1;
Previously we'd fold &&l1 to 1, which is fine per our semantics
but not helpful to the user.
llvm-svn: 125827
2011-02-18 04:25:21 +00:00
f69c80bac2
Recognize monitor/mwait with explicit register arguments
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llvm-svn: 125805
2011-02-18 00:48:11 +00:00
4f3f9c7ba9
Check the errorcode.
...
llvm-svn: 125804
2011-02-18 00:47:07 +00:00
73e203e3d3
Trim debugging output.
...
llvm-svn: 125802
2011-02-18 00:32:47 +00:00
889a508157
Recognize leavel and leaveq aliases for leave.
...
Validate encoding of leave in 64bit mode.
llvm-svn: 125795
2011-02-17 23:36:39 +00:00
f922a431ee
Do not lose debug info of an inlined function argument even if the argument is only used through GEPs.
...
llvm-svn: 125794
2011-02-17 23:33:27 +00:00
a8fed47eed
have instcombine preserve nsw/nuw/exact when sinking
...
common operations through a phi.
llvm-svn: 125790
2011-02-17 23:01:49 +00:00
99827e861f
Add basic register allocator statistics.
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llvm-svn: 125789
2011-02-17 22:53:48 +00:00
75ae5a45ff
fix typo
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llvm-svn: 125787
2011-02-17 22:32:54 +00:00
abb8eb2c63
fix instcombine merging GEPs through a PHI to only make the
...
result inbounds if all of the inputs are inbounds.
llvm-svn: 125785
2011-02-17 22:21:26 +00:00
7cc6d12ad0
Enhance constant folding of bitcast operations on vectors of floats.
...
Add getAllOnesValue of FP numbers to Constants and APFloat.
Add more tests.
llvm-svn: 125776
2011-02-17 21:22:27 +00:00
d406764d52
add is always integer, thanks to Frits for noticing this.
...
llvm-svn: 125774
2011-02-17 20:55:29 +00:00
3a2b508e8f
[AVX] Recorganize X86ShuffleDecode into its own library
...
(LLVMX86Utils.a) to break cyclic library dependencies between
LLVMX86CodeGen.a and LLVMX86AsmParser.a. Previously this code was in
a header file and marked static but AVX requires some additional
functionality here that won't be used by all clients. Since including
unused static functions causes a gcc compiler warning, keeping it as a
header would break builds that use -Werror. Putting this in its own
library solves both problems at once.
llvm-svn: 125765
2011-02-17 19:18:59 +00:00
93c8736abb
Split local live ranges.
...
A local live range is live in a single basic block. If such a range fails to
allocate, try to find a sub-range that would get a larger spill weight than its
interference.
llvm-svn: 125764
2011-02-17 19:13:53 +00:00
f0f8e14370
The labyrinthine X86 backend no longer appears to require
...
these patterns.
llvm-svn: 125759
2011-02-17 18:50:19 +00:00
c6196aa481
Fix wrong logic in promotion of signed mul-with-overflow (I pointed this out at
...
the time but presumably my email got lost). Examples where the previous logic
got it wrong: (1) a signed i8 multiply of 64 by 2 overflows, but the high part is
zero; (2) a signed i8 multiple of -128 by 2 overflows, but the high part is all
ones.
llvm-svn: 125748
2011-02-17 12:42:48 +00:00
4c14a5cc2c
Triple::MinGW64 is deprecated and removed. We can use Triple::MinGW32 generally.
...
No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.
llvm-svn: 125747
2011-02-17 12:24:17 +00:00
0544fe7287
Fix whitespace.
...
llvm-svn: 125746
2011-02-17 12:23:50 +00:00
491eb276a7
This has been implemented.
...
llvm-svn: 125738
2011-02-17 08:16:56 +00:00
e522001171
Transform "A + B >= A + C" into "B >= C" if the adds do not wrap. Likewise for some
...
variations (some of these were already present so I unified the code). Spotted by my
auto-simplifier as occurring a lot.
llvm-svn: 125734
2011-02-17 07:46:37 +00:00
83f4cee199
Switch to SmallVector in SimpleRegisterCoalescing for a 3.5% speedup on 403.gcc.
...
llvm-svn: 125728
2011-02-17 06:52:07 +00:00
ecd44922ab
Adjust indenting of arguments.
...
llvm-svn: 125727
2011-02-17 06:13:46 +00:00
0b0cc4d75e
Return Changed from SplitPHIEdges rather than always returning true.
...
llvm-svn: 125726
2011-02-17 06:13:43 +00:00
5592071768
preserve NUW/NSW when transforming add x,x
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llvm-svn: 125711
2011-02-17 02:23:02 +00:00
727eebee58
add some notes on compares + binops. Remove redundant entries.
...
llvm-svn: 125702
2011-02-17 01:43:46 +00:00
3eb0af94c4
fix PR9215, preventing -reassociate from clearing nsw/nuw when
...
it swaps the LHS/RHS of a single binop.
llvm-svn: 125700
2011-02-17 01:29:24 +00:00
28bf91f78e
Add a few missed xforms from GCC PR14753
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llvm-svn: 125681
2011-02-16 19:16:34 +00:00
81c4306005
Swap VT and DebugLoc operands of getExtLoad() for consistency with
...
other getNode() methods. Radar 9002173.
llvm-svn: 125665
2011-02-16 16:23:55 +00:00
c8fb2557b9
Remove outdated README entry.
...
llvm-svn: 125660
2011-02-16 07:41:19 +00:00
0254c4c01b
Remove outdated README entry.
...
llvm-svn: 125659
2011-02-16 07:18:18 +00:00
5f75515e5d
Update README entry.
...
llvm-svn: 125658
2011-02-16 07:17:44 +00:00
e5ca1e0506
Refactor zero folding slightly. Clean up todo.
...
llvm-svn: 125651
2011-02-16 04:50:12 +00:00
490d02a334
Gas is very inconsistent about when a relaxation/relocation is needed. Do
...
the right thing and stop trying to copy it. Fixes PR8944.
llvm-svn: 125648
2011-02-16 03:25:55 +00:00
ef72141a75
The change for PR9190 wasn't quite right. We need to avoid making the
...
transformation if we can't legally create a build vector of the correct
type. Check that we can make the transformation first, and add a TODO to
refactor this code with similar cases.
Fixes: PR9223 and rdar://9000350
llvm-svn: 125631
2011-02-16 01:10:03 +00:00
58ac6e1677
Add support for pushsection and popsection. Patch by Joerg Sonnenberger.
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llvm-svn: 125629
2011-02-16 01:08:29 +00:00
2eecc22fdb
Remove a duplicated check.
...
llvm-svn: 125625
2011-02-16 00:37:02 +00:00
Chris Lattner