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48965 Commits

Author SHA1 Message Date
Owen Anderson 3987a61c16 Fix decoding of pre-indexed stores. 
llvm-svn: 137487
 2011-08-12 18:12:39 +00:00
Devang Patel 444034783e Use ArrayRef. 
llvm-svn: 137485
 2011-08-12 18:10:19 +00:00
Akira Hatanaka 7bd6e6ebef When constant double 0.0 is lowered, make sure 0 is copied directly from an 
integer register to a floating point register. It is not valid to interpret
the value of a floating pointer register as part of a double precision
floating point value after a single precision floating point computational
or move instruction stores its result to the register.

- In the test case, the following code is generated before this patch is
  applied:
mtc1  $zero, $f2    ; unformatted copy to $f2
mov.s $f0, $f2      ; $f0 is in single format
sdc1  $f12, 0($sp)
mov.s $f1, $f2      ; $f1 is in single format
c.eq.d  $f12, $f0   ; $f0 cannot be interpreted as double

- The following code is generated after this patch is applied:
mtc1  $zero, $f0    ; unformatted copy to $f0
mtc1  $zero, $f1    ; unformatted copy to $f1
c.eq.d  $f12, $f0   ; $f0 can be interpreted as double

Bhanu Chetlapalli and Chris Dearman at MIPS technologies reported this bug and
provided the test case.

llvm-svn: 137484
 2011-08-12 18:09:59 +00:00
Chris Lattner a585102d3e add ifdef's to let people easily remove these dead api for testing. 
llvm-svn: 137483
 2011-08-12 18:08:19 +00:00
Chris Lattner 44f7ab4544 switch to the new struct api. 
llvm-svn: 137482
 2011-08-12 18:07:26 +00:00
Chris Lattner 01becebef3 switch to the new struct apis. 
llvm-svn: 137481
 2011-08-12 18:07:07 +00:00
Chris Lattner 335d399a0e switch to use the new api for structtypes. 
llvm-svn: 137480
 2011-08-12 18:06:37 +00:00
Chris Lattner 2f50231c10 forward to the correct constructor. 
llvm-svn: 137479
 2011-08-12 18:03:30 +00:00
Devang Patel db4374a28a Provide fast path as Jakob suggested. 
llvm-svn: 137478
 2011-08-12 18:01:34 +00:00
Owen Anderson c5798a3a59 Separate decoding for STREXD and LDREXD to make each work better. 
llvm-svn: 137476
 2011-08-12 17:58:32 +00:00
Chris Lattner 8a2f747546 add two missing function impls 
llvm-svn: 137470
 2011-08-12 17:43:05 +00:00
Chris Lattner 190552d3e0 add new accessors to reflect new terminology in struct types. 
llvm-svn: 137468
 2011-08-12 17:31:02 +00:00
Nadav Rotem 62da15a330 Revert r137310 because it does not optimize any code on ToT 
llvm-svn: 137466
 2011-08-12 17:15:04 +00:00
Chad Rosier 75ec09c0e3 Whitespace and formatting. No functional change intended. 
llvm-svn: 137463
 2011-08-12 16:45:18 +00:00
Duncan Sands a41634e307 Silence a bunch (but not all) "variable written but not read" warnings 
when building with assertions disabled.

llvm-svn: 137460
 2011-08-12 14:54:45 +00:00
Benjamin Kramer 91ea511436 MachOWriter: Don't crash on fixups with arithmetic, emit a relocation instead. This matches what as does. 
llvm-svn: 137414
 2011-08-12 01:51:29 +00:00
Andrew Trick 210bf8351d findDeadCallerSavedReg fix: Missing NULL terminator in register arrays. 
Fix by Ivan Baev. Sorry I don't have a unit test, but the fix is obvious so I don't want to delay it.

llvm-svn: 137404
 2011-08-12 00:49:19 +00:00
Dan Gohman 10a18d55ce Don't convert objc_autoreleaseReturnValue to objc_autorelease if the result 
is returned through a bitcast.

llvm-svn: 137402
 2011-08-12 00:36:31 +00:00
Dan Gohman 121302772d Don't let arbitrary calls disrupt nested retain+release pairs if 
the retains and releases all use the same SSA pointer value.

Also, don't let CFG hazards disrupt nested retain+release pair
optimizations.

llvm-svn: 137399
 2011-08-12 00:26:31 +00:00
Dan Gohman 4767a1a117 Use an actual reverse-CFG reverse-postorder for the bottom-up traversal, 
rather than plain postorder, so that CFG constructs like single-exit loops
are reliably visited in a sensible order.

llvm-svn: 137398
 2011-08-12 00:24:29 +00:00
Jakob Stoklund Olesen 1f582ba609 Simplify the interference checking code a bit. 
This is possible now that we now longer provide an interface to iterate
the interference overlaps.

llvm-svn: 137397
 2011-08-12 00:22:04 +00:00
Jim Grosbach 8cffa28af8 ARM vector compare to zero instruction assembly parsing support. 
llvm-svn: 137389
 2011-08-11 23:51:13 +00:00
Andrew Trick 2b6860f0a1 Allow loop unrolling to get known trip counts from ScalarEvolution. 
SCEV unrolling can unroll loops with arbitrary induction variables. It
is a prerequisite for -disable-iv-rewrite performance. It is also
easily handles loops of arbitrary structure including multiple exits
and is generally more robust.

This is under a temporary option to avoid affecting default
behavior for the next couple of weeks. It is needed so that I can
checkin unit tests for updateUnloop.

llvm-svn: 137384
 2011-08-11 23:36:16 +00:00
Jakob Stoklund Olesen da0192d72b Remove the InterferenceResult class. 
llvm-svn: 137381
 2011-08-11 22:46:06 +00:00
Jakob Stoklund Olesen cd14efaec2 Eliminate the last use of InterferenceResult. 
The Query class now holds two iterators instead of an InterferenceResult
instance. The iterators are used as bookmarks for repeated
collectInterferingVRegs calls.

llvm-svn: 137380
 2011-08-11 22:46:04 +00:00
Akira Hatanaka 79d60d0e94 Enclose directive .cprestore with .set macro and nomacro to silence assembler 
warning. 

llvm-svn: 137378
 2011-08-11 22:42:31 +00:00
Jim Grosbach 37f7e6b2f4 Remove no-longer-true comments. These are for the assembler, also. 
llvm-svn: 137375
 2011-08-11 22:30:30 +00:00
Jim Grosbach e25942154c ARM STRT assembly parsing and encoding. 
llvm-svn: 137372
 2011-08-11 22:18:00 +00:00
Owen Anderson eca346ee1a Make the USAT16 operand decoder auto-generate-able. 
llvm-svn: 137371
 2011-08-11 22:10:11 +00:00
Owen Anderson ff0b442330 Add another accidentally omitted predicate operand. 
llvm-svn: 137370
 2011-08-11 22:08:38 +00:00
Owen Anderson 2f7aa73312 Add missing predicate operand on SMLA and friends. 
llvm-svn: 137368
 2011-08-11 22:05:38 +00:00
Jim Grosbach a2b8b60646 ARM load shifted register pre-index fix shift value asm parser encoding. 
llvm-svn: 137367
 2011-08-11 22:05:09 +00:00
Owen Anderson 12d13efa21 Handle new register classes in Thumb2 mode. Should fix the ARM buildbots. 
llvm-svn: 137364
 2011-08-11 21:52:38 +00:00
Owen Anderson f05e744857 Making SEL decodings auto-generate-able. 
llvm-svn: 137363
 2011-08-11 21:50:56 +00:00
Bruno Cardoso Lopes 8fbf023c9b Add a dag combine to xform 256-bit shuffles into simple vector 
inserts and extracts. This simple combine makes us generate only 1
instruction instead of 11 in the v8 case.

llvm-svn: 137362
 2011-08-11 21:50:44 +00:00
Jim Grosbach 88981ff168 Tidy up comment. 
llvm-svn: 137359
 2011-08-11 21:41:59 +00:00
Owen Anderson b685c9f011 Fix decoding support for STREXD and LDREXD. 
llvm-svn: 137356
 2011-08-11 21:34:58 +00:00
Jakob Stoklund Olesen da4f0eb12c Remove more dead code. 
collectInterferingVRegs will be the primary function for interference
checks.

llvm-svn: 137354
 2011-08-11 21:18:34 +00:00
Jim Grosbach d886f8cd8d ARM STRH assembly parsing and encoding. 
llvm-svn: 137353
 2011-08-11 21:17:22 +00:00
Dan Gohman 7e315fc37d Fix typos in comments, and delete an unused function. 
llvm-svn: 137352
 2011-08-11 21:06:32 +00:00
Akira Hatanaka 6d8c039ab1 Add isIndirectBranch flag. 
llvm-svn: 137351
 2011-08-11 21:05:37 +00:00
Jakob Stoklund Olesen 7519336752 Privatize an unused part of the LiveIntervalUnion::Query interface. 
No clients are iterating over interference overlaps.

llvm-svn: 137350
 2011-08-11 21:00:42 +00:00
Owen Anderson 3a850f28d0 Fix decoding for indexed STRB and LDRB. Fixes <rdar://problem/9926161>. 
llvm-svn: 137347
 2011-08-11 20:47:56 +00:00
Jakob Stoklund Olesen 05ff9d1f6d Remove some dead code. 
The InterferenceResult iterator turned out to be less important than we
thought it would be.  LiveIntervalUnion clients want higher level
information, like the list of interfering virtual registers.

llvm-svn: 137346
 2011-08-11 20:41:41 +00:00
Jim Grosbach 2ea19d1438 Tidy up. Remove unused template parameter. 
llvm-svn: 137345
 2011-08-11 20:41:13 +00:00
Owen Anderson 887c0b1358 Improve operand validation for Thumb2 addressing modes. 
llvm-svn: 137344
 2011-08-11 20:40:40 +00:00
Jim Grosbach eb09f49a7f ARM STRD assembly parsing and encoding. 
llvm-svn: 137342
 2011-08-11 20:28:23 +00:00
Andrew Trick c12c30a670 Fix for LoopInfo::updateUnloop. Remove subloop blocks from former 
ancestor loops.

I have a unit test that depends on scev-unroll, which unfortunately
isn't checked in. But I will check it in when I can.

llvm-svn: 137341
 2011-08-11 20:27:32 +00:00
Owen Anderson 6066340301 Continue to tighten decoding by performing more operand validation. 
llvm-svn: 137340
 2011-08-11 20:21:46 +00:00
Jim Grosbach 1b0f79573e Tidy up. 
llvm-svn: 137339
 2011-08-11 20:13:35 +00:00