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Author SHA1 Message Date
Evan Cheng
e33e4028a6 Increase SubtargetFeatureKV Value and Implies fields to 64 bits since some targets are getting very close to 32 subtarget features. Also teach tablegen to error when there are more than 64 features to guard against undefined behavior. rdar://9282332 
llvm-svn: 129590
 2011-04-15 19:35:46 +00:00
Joerg Sonnenberger
42c3063de0 Add encoding tests for flds/filds 
llvm-svn: 129589
 2011-04-15 19:25:31 +00:00
Lenny Maiorani
dfae65d305 Implements StringRef::compare with bounds. It is behaves similarly to strncmp(). Unit tests also included. 
llvm-svn: 129582
 2011-04-15 17:56:50 +00:00
Jakob Stoklund Olesen
bdd6204582 Teach the SplitKit blitter to handle multiply defined values as well. 
The transferValues() function can now handle both singly and multiply defined
values, as long as the resulting live range is known. Only rematerialized values
have their live range recomputed by extendRange().

The updateSSA() function can now insert PHI values in bulk across multiple
values in multiple target registers in one pass. The list of blocks received
from transferValues() is in layout order which seems to work well for the
iterative algorithm. Blocks from extendRange() are still in reverse BFS order,
but this function is used so rarely now that it doesn't matter.

llvm-svn: 129580
 2011-04-15 17:24:49 +00:00
Jakob Stoklund Olesen
ea8581b792 Remember to set flag. 
llvm-svn: 129579
 2011-04-15 17:24:46 +00:00
Rafael Espindola
99831068c8 Add 129518 back with a fix for when we are producing eh just because of debug info. 
Change ELF systems to use CFI for producing the EH tables. This reduces the
size of the clang binary in Debug builds from 690MB to 679MB.

llvm-svn: 129571
 2011-04-15 15:11:06 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
NAKAMURA Takumi
7aed456653 Revert r129518, "Change ELF systems to use CFI for producing the EH tables. This reduces the" 
It broke several builds.

llvm-svn: 129557
 2011-04-15 03:35:57 +00:00
Evan Cheng
f33f509d45 Fix another fcopysign lowering bug. If src is f64 and destination is f32, don't 
forget to right shift the source by 32 first. rdar://9287902

llvm-svn: 129556
 2011-04-15 01:31:00 +00:00
Johnny Chen
f268f057f4 For t2BFI, both Inst{26} and Inst{5} "should" be 0. 
Ref: I.1 Instruction encoding diagrams and pseudocode
llvm-svn: 129552
 2011-04-15 00:35:08 +00:00
Michael J. Spencer
05b07faeaf Add 3DNow! intrinsics. 
llvm-svn: 129551
 2011-04-15 00:32:41 +00:00
Johnny Chen
197d67a987 The ARM disassembler did not handle the alignment correctly for VLD*DUP* instructions 
(single element or n-element structure to all lanes).

llvm-svn: 129550
 2011-04-15 00:10:45 +00:00
Evan Cheng
d01345fcc4 Follow up on r127913. Fix Thumb revsh isel. rdar://9286766 
llvm-svn: 129548
 2011-04-14 23:27:44 +00:00
Eli Friedman
198c39a4fe Add an instcombine for constructs like a | -(b != c); a select is more 
canonical, and generally leads to better code.  Found while looking at
an article about saturating arithmetic.

llvm-svn: 129545
 2011-04-14 22:41:27 +00:00
Owen Anderson
268d8f22f8 Fix an infinite alternation in JumpThreading where two transforms would repeatedly undo each other. The solution is to perform more aggressive constant folding to make one of the edges just folded away rather than trying to thread it. 
Fixes <rdar://problem/9284786>.

Discovered with CSmith.

llvm-svn: 129538
 2011-04-14 21:35:50 +00:00
Mon P Wang
f9b26f115c Cleanup r129509 based on comments by Chris 
llvm-svn: 129532
 2011-04-14 19:20:42 +00:00
Johnny Chen
d58c6d4730 Add sanity checkings for Thumb2 Load/Store Register Exclusive family of operations. 
llvm-svn: 129531
 2011-04-14 19:13:28 +00:00
Chris Lattner
0f6423cf23 move PR9661 out to here. 
llvm-svn: 129527
 2011-04-14 18:47:18 +00:00
Owen Anderson
0ce6c0f86e Fix another instance of the DAG combiner not using the correct type for the RHS of a shift. 
llvm-svn: 129522
 2011-04-14 17:30:49 +00:00
Daniel Dunbar
6f91b732fb tests: Remove a FrontendC test which is no longer valid. 
llvm-svn: 129519
 2011-04-14 15:21:16 +00:00
Rafael Espindola
d5eed657e2 Change ELF systems to use CFI for producing the EH tables. This reduces the 
size of the clang binary in Debug builds from 690MB to 679MB.

llvm-svn: 129518
 2011-04-14 15:18:53 +00:00
Michael J. Spencer
9c5e660612 Fix whitespace and tabs. 
llvm-svn: 129517
 2011-04-14 14:33:36 +00:00
Mon P Wang
8b09087f46 Cleanup r129472 by using a utility routine as suggested by Eli. 
llvm-svn: 129509
 2011-04-14 08:04:01 +00:00
Andrew Trick
e89c19ab7b In the pre-RA scheduler, maintain cmp+br proximity. 
This is done by pushing physical register definitions close to their
use, which happens to handle flag definitions if they're not glued to
the branch. This seems to be generally a good thing though, so I
didn't need to add a target hook yet.

The primary motivation is to generate code closer to what people
expect and rule out missed opportunity from enabling macro-op
fusion. As a side benefit, we get several 2-5% gains on x86
benchmarks. There is one regression:
SingleSource/Benchmarks/Shootout/lists slows down be -10%. But this is
an independent scheduler bug that will be tracked separately.
See rdar://problem/9283108.

Incidentally, pre-RA scheduling is only half the solution. Fixing the
later passes is tracked by:
<rdar://problem/8932804> [pre-RA-sched] on x86, attempt to schedule CMP/TEST adjacent with condition jump

Fixes:
<rdar://problem/9262453> Scheduler unnecessary break of cmp/jump fusion

llvm-svn: 129508
 2011-04-14 05:15:06 +00:00
Andrew Trick
85a4af977a Documented bugpoint --compile-custom --compile-command. 
I've used it a few times to reduce unit tests and gotten one request for information on it. It's not easy to use correctly because bugpoint doesn't tell you when you're doing it wrong.

llvm-svn: 129507
 2011-04-14 05:05:36 +00:00
Chris Lattner
5fa2544086 add a minor missed dag combine that is blocking mid-level optimization 
improvements, that will lead to fixing PR6627.

llvm-svn: 129504
 2011-04-14 04:21:42 +00:00
Chris Lattner
d4ba43dc76 sink a call into its only use. 
llvm-svn: 129503
 2011-04-14 04:12:47 +00:00
Chris Lattner
88e2acc24c rework FoldBranchToCommonDest to exit earlier when there is a bonus 
instruction around, reducing work.

Greatly simplify handling of debug instructions.  There is no need to
build up a vector of them and then move them into the one predecessor
if we're processing a block.  Instead just rescan the block and *copy*
them into the pred.  If a block gets merged into multiple preds, this
will retain more debug info.

llvm-svn: 129502
 2011-04-14 02:44:53 +00:00
Chris Lattner
e9409fb80a fix a couple -Wsign-compare warnings. 
llvm-svn: 129501
 2011-04-14 02:27:25 +00:00
Bill Wendling
0b9c16295a As Dan pointed out, movzbl, movsbl, and friends are nicer than their alias 
(movzx/movsx) because they give more information. Revert that part of the patch.

llvm-svn: 129498
 2011-04-14 01:46:37 +00:00
Bill Wendling
d49591cf21 Have the X86 back-end emit the alias instead of what's being aliased. In most 
cases, it's much nicer and more informative reading the alias.

llvm-svn: 129497
 2011-04-14 01:11:51 +00:00
Bill Wendling
500b41a7a5 Add an option to not print the alias of an instruction. It defaults to "print 
the alias".

llvm-svn: 129485
 2011-04-13 23:36:21 +00:00
Owen Anderson
d98929ed6c During post-legalization DAG combining, be careful to only create shifts where the RHS is of the legal type for the new operation. 
llvm-svn: 129484
 2011-04-13 23:22:23 +00:00
Johnny Chen
1362fdf7a6 Thumb disassembler did not handle tBRIND (indirect branch) properly. 
rdar://problem/9280370

llvm-svn: 129480
 2011-04-13 21:59:01 +00:00
Mon P Wang
4b667cd995 Vectors with different number of elements of the same element type can have 
the same allocation size but different primitive sizes(e.g., <3xi32> and
<4xi32>).  When ScalarRepl promotes them, it can't use a bit cast but
should use a shuffle vector instead.

llvm-svn: 129472
 2011-04-13 21:40:02 +00:00
Johnny Chen
d4a0b55be5 Check for unallocated instruction encodings when disassembling Thumb Branch instructions (tBcc and t2Bcc). 
rdar://problem/9280470

llvm-svn: 129471
 2011-04-13 21:35:49 +00:00
Johnny Chen
dd6fc153b1 The LDR*T/STR*T (unpriviledged load/store) operations don't take SP or PC as Rt. 
rdar://problem/9279440

llvm-svn: 129469
 2011-04-13 21:04:32 +00:00
Cameron Zwarich
6b4e85338c Fix a typo in an ARM-specific DAG combine. This fixes <rdar://problem/9278274>. 
llvm-svn: 129468
 2011-04-13 21:01:19 +00:00
Benjamin Kramer
41b2c100c4 Fix format string warning. 
llvm-svn: 129467
 2011-04-13 20:41:43 +00:00
Cameron Zwarich
ae6963bced Fix a regression caused by r102515 where explicit alignment on globals is 
ignored. There was a test to catch this, but it was just blindly updated in
a large change. This fixes another part of <rdar://problem/9275290>.

llvm-svn: 129466
 2011-04-13 20:36:04 +00:00
Devang Patel
11eaae759b Fix debug message. 
llvm-svn: 129463
 2011-04-13 19:47:41 +00:00
Johnny Chen
b293311a34 Check the corner cases for t2LDRSHi12 correctly and mark invalid encodings as such. 
rdar://problem/9276651

llvm-svn: 129462
 2011-04-13 19:46:05 +00:00
Devang Patel
43cbfe2ba7 Remove extra bytes that were added for gdb. We do not have good poiner to understand actual reason behind this fixme. Spot checking suggest that newer gdb does not need this. 
llvm-svn: 129461
 2011-04-13 19:41:17 +00:00
Nick Lewycky
80f6aaa390 Use positive values since the value type is unsigned. Fixes a warning on the 
llvm-gcc-native-mingw32 builder.

llvm-svn: 129457
 2011-04-13 18:46:22 +00:00
Johnny Chen
e94b35dc41 Fix a bug where for t2MOVCCi disassembly, the TIED_TO register operand was not properly handled. 
rdar://problem/9276427

llvm-svn: 129456
 2011-04-13 17:51:02 +00:00
Johnny Chen
0da4c8bfec Forgot to add this change for http://llvm.org/viewvc/llvm-project?view=rev&revision=129387. 
llvm-svn: 129451
 2011-04-13 16:56:08 +00:00
Junjie Gu
caffb8c04f Fixed the revision 129449. 
llvm-svn: 129450
 2011-04-13 16:45:49 +00:00
Junjie Gu
920274b4dd Passing unroll parameters (unroll-count, threshold, and partial unroll) via LoopUnroll class's ctor. Doing so 
will allow multiple context with different loop unroll parameters to run.  This is a minor change and no effect 
on existing application.

llvm-svn: 129449
 2011-04-13 16:15:29 +00:00
Jim Grosbach
6980d004ee Load multiple object files and link them via RuntimeDyld in llvm-rtdyld. 
Relocations between the object modules are properly resolved, as in the
following trivial example:

$ cat t.c
int foo();
int main() {
    return foo();
}
$ cat foo.c
int foo() {
    return 65;
}
$ clang -c t.c -fno-asynchronous-unwind-tables
$ clang -c foo.c -fno-asynchronous-unwind-tables
$ llvm-rtdyld t.o foo.o ; echo $?
loaded '_main' at: 0x10015c000
65

llvm-svn: 129448
 2011-04-13 15:49:40 +00:00
Rafael Espindola
3a5e7bd46f Add the alias analysis to the C api. 
llvm-svn: 129447
 2011-04-13 15:44:58 +00:00