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44035 Commits

Author SHA1 Message Date
Dan Gohman
98f5b2ae22 Use PartialAlias to do better noalias lint checking. 
llvm-svn: 121514
 2010-12-10 20:04:06 +00:00
Dan Gohman
cbee92bb65 Teach AliasAnalysisCounter about PartialAlias. 
llvm-svn: 121513
 2010-12-10 19:53:05 +00:00
Dan Gohman
26e1b4ac11 Teach AliasAnalysisEvaluator about PartialAlias. 
llvm-svn: 121512
 2010-12-10 19:52:40 +00:00
Dan Gohman
9e03ffc789 Update this code to handle PartialAlias as MayAlias. 
llvm-svn: 121508
 2010-12-10 19:40:47 +00:00
Bob Wilson
5ff13f9d5c Fix some invalid alignments for Neon vld-dup and vld/st-lane instructions. 
Alignments smaller than the total size of the memory being loaded or stored,
unless the alignment is 8 bytes, are not allowed.  Add tests for this, too.

llvm-svn: 121506
 2010-12-10 19:37:42 +00:00
Jim Grosbach
4a414e1973 Teach isCSRestore() that ARM/Thumb2 functions will use post-modify LDR 
instructions to restore a single register rather than an LDM instruction.
rdar://8754999

llvm-svn: 121498
 2010-12-10 18:41:15 +00:00
Jakob Stoklund Olesen
e3924a3c85 Add an AllocationOrder class that can iterate over the allocatable physical 
registers for a given virtual register.

Reserved registers are filtered from the allocation order, and any valid hint is
returned as the first suggestion.

For target dependent hints, a number of arcane target hooks are invoked.

llvm-svn: 121497
 2010-12-10 18:36:02 +00:00
Jim Grosbach
a378c43eae Thumb unconditional branch binary encoding. rdar://8754994 
llvm-svn: 121496
 2010-12-10 18:21:33 +00:00
Jim Grosbach
905301a7d8 Thumb conditional branch binary encodings. rdar://8745367 
llvm-svn: 121493
 2010-12-10 17:13:40 +00:00
Rafael Espindola
0e665e502d Fixed version of 121434 with no new memory leaks. 
llvm-svn: 121471
 2010-12-10 07:39:47 +00:00
Daniel Dunbar
fd96efb8e9 Mach-O: Tweak field name. 
llvm-svn: 121465
 2010-12-10 06:19:39 +00:00
Rafael Espindola
676ea9d9b4 Fix cmake build. 
llvm-svn: 121462
 2010-12-10 04:28:37 +00:00
Rafael Espindola
011e168728 Revert my previous patch to make the valgrind bots happy. 
llvm-svn: 121461
 2010-12-10 04:01:09 +00:00
NAKAMURA Takumi
e3f485b0dc lib/Target/CMakeLists.txt: Add missing lib/Target/TargetAsmInfo.cpp, following up to r121434. 
llvm-svn: 121454
 2010-12-10 02:15:24 +00:00
Kevin Enderby
a2efb1ad4e Fix the leak from r121401 of the Operands erased in the list but not deleted. 
llvm-svn: 121450
 2010-12-10 01:41:56 +00:00
Nate Begeman
8c00ecd290 Add some missing predicates. 
llvm-svn: 121445
 2010-12-10 00:54:26 +00:00
Nate Begeman
cb6d1c8193 Formalize the notion that AVX and SSE are non-overlapping extensions from the compiler's point of view. Per email discussion, we either want to always use VEX-prefixed instructions or never use them, and are taking "HasAVX" to mean "Always use VEX". Passing -mattr=-avx,+sse42 should serve to restore legacy SSE support when desirable. 
llvm-svn: 121439
 2010-12-10 00:26:57 +00:00
Rafael Espindola
03ad1e8f1f Initial support for the cfi directives. This is just enough to get 
f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

llvm-svn: 121434
 2010-12-09 23:48:29 +00:00
Rafael Espindola
ebe4cab1db Use const references. 
llvm-svn: 121426
 2010-12-09 23:08:35 +00:00
Bill Wendling
f8eaf8a243 Thumb ldr reg+imm offsets were encoded incorrectly. The scaling factor of the 
t_addrmode_s# address modes is used for ASM printing, not for encoding.
<rdar://problem/8745375>

llvm-svn: 121417
 2010-12-09 21:49:07 +00:00
Nate Begeman
4a62a3e229 Add support for AVX to materialize +0.0 when doing scalar FP. 
llvm-svn: 121415
 2010-12-09 21:43:51 +00:00
Owen Anderson
4be3b6db5c Use the new IsAligned fixup flag to improve fixup encodings for Thumb2 branches. This is still not perfect, 
but it gets many more of them correct than it did previously.

llvm-svn: 121414
 2010-12-09 21:34:47 +00:00
Stuart Hastings
f7bba0cfe3 Initial support for nested CALLSEQ_START/CALLSEQ_END constructs in LegalizeDAG. 
Necessary for byval support on ARM.  Radar 7662569.

llvm-svn: 121412
 2010-12-09 21:25:20 +00:00
Jakob Stoklund Olesen
fe4b9ee934 Remember to filter out reserved rergisters from the allocation order. 
llvm-svn: 121411
 2010-12-09 21:20:46 +00:00
Jakob Stoklund Olesen
5bb5c67227 Add a forgotten initializer for CheckedFirstInterference. 
llvm-svn: 121410
 2010-12-09 21:20:44 +00:00
Owen Anderson
a8ac35b468 Fix an issue in some Thumb fixups, where the effective PC address needs to be 4-byte aligned when calculating 
the offset.  Add a new fixup flag to represent this, and use it for the one fixups that I have a testcase for needing
this.  It's quite likely that the other Thumb fixups will need this too, and to have their fixup encoding logic
adjusted accordingly.

llvm-svn: 121408
 2010-12-09 20:27:52 +00:00
Jim Grosbach
61fe7b9ee5 Rename CB/CBZ specific fixup accordingly. 
llvm-svn: 121404
 2010-12-09 19:50:12 +00:00
Devang Patel
bef09ddec8 Add assert to catch an attempt to emit .byte 256 
llvm-svn: 121402
 2010-12-09 19:26:21 +00:00
Kevin Enderby
55cb19813e Add support for parsing ARM arithmetic instructions that update or don't update 
the condition codes.  Where the ones that do have an 's' suffix and the ones
that don't don't have the suffix.  The trick is if MatchInstructionImpl() fails
we try again after adding a CCOut operand with the correct value and removing
the 's' if present.  Four simple test cases added for now, lots more to come.

llvm-svn: 121401
 2010-12-09 19:19:43 +00:00
Jim Grosbach
9b3730fc77 Rename the encoder method for t_cbtarget to match. 
llvm-svn: 121399
 2010-12-09 19:04:53 +00:00
Jim Grosbach
57d420438a Thumb needs a few different encoding schemes for branch targets. Rename 
t_brtarget to be more specific.

llvm-svn: 121398
 2010-12-09 19:01:46 +00:00
Jim Grosbach
8bc33cc6e5 ARM stm/ldm instructions require more than one register in the register list. 
Otherwise, a plain str/ldr should be used instead. Make sure we account for
that in prologue/epilogue code generation.
rdar://8745460

llvm-svn: 121391
 2010-12-09 18:31:13 +00:00
Andrew Trick
ec37b93b07 Added register reassignment prototype to RAGreedy. It's a simple 
heuristic to reshuffle register assignments when we can't find an
available reg.

llvm-svn: 121388
 2010-12-09 18:15:21 +00:00
Michael J. Spencer
3dbfb7c62e Support/Windows/PathV2: Fix header comment. 
llvm-svn: 121383
 2010-12-09 17:37:42 +00:00
Michael J. Spencer
95b8bf9f67 Fix whitespace. 
llvm-svn: 121382
 2010-12-09 17:37:32 +00:00
Michael J. Spencer
c4c4e1133d Support: Move c_str from SmallVector back to SmallString and add a free standing 
templated c_str in Windows.h to replace it.

llvm-svn: 121381
 2010-12-09 17:37:18 +00:00
Michael J. Spencer
1d95a8f9bc Support/FileSystem: Change file_status predicate functions that cannot fail to 
return their result instead of an error_code. Also add some missing predicate
functions.

llvm-svn: 121380
 2010-12-09 17:37:02 +00:00
Michael J. Spencer
15483143ec Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients. 
llvm-svn: 121379
 2010-12-09 17:36:48 +00:00
Bruno Cardoso Lopes
93e5c2fb64 Add ROTR and ROTRV mips32 instructions. Patch by Akira Hatanaka 
llvm-svn: 121377
 2010-12-09 17:32:30 +00:00
Bruno Cardoso Lopes
0f5478218e Fix delay slot filler for non mips1 targets. Patch by Akira Hatanaka 
llvm-svn: 121376
 2010-12-09 17:31:11 +00:00
Kalle Raiskila
18da80f675 Dont' feed ILA two inputs - it takes just one. 
llvm-svn: 121372
 2010-12-09 16:17:31 +00:00
Jim Grosbach
4ad6abd006 tidy up. 
llvm-svn: 121371
 2010-12-09 16:15:41 +00:00
Jim Grosbach
9adf657f1a 80 columns. 
llvm-svn: 121370
 2010-12-09 16:14:46 +00:00
Chris Lattner
996691e79c enhance memcpyopt to zap memcpy's that have the same src/dst. 
llvm-svn: 121362
 2010-12-09 07:45:45 +00:00
Chris Lattner
4fef82afa0 fix PR8753, eliminating a case where we'd infinitely make a 
substitution because it doesn't actually change the IR.  Patch by
Jakub Staszak!

llvm-svn: 121361
 2010-12-09 07:39:50 +00:00
Eric Christopher
0e40452eb0 Rewrite the darwin tlv support to use a chain and return to copying 
the output to the correct register. Fixes a hidden problem uncovered
by the last patch where we'd try to DAG combine our MVT::Other node
oddly.

llvm-svn: 121358
 2010-12-09 06:25:53 +00:00
Owen Anderson
a882a78d4b Take the first step towards making LVI non-recursive: get rid of the LVIQuery abstraction. 
llvm-svn: 121357
 2010-12-09 06:14:58 +00:00
Eric Christopher
ebd7ab9857 80-col fixups. 
llvm-svn: 121356
 2010-12-09 04:48:06 +00:00
Wesley Peck
33ba317cf6 Reworking the stack layout generated by the MBlaze backend. 
llvm-svn: 121355
 2010-12-09 03:42:04 +00:00
Owen Anderson
96545f21b9 Fix encoding of the immediate operands on post-indexed LDR and friends. 
llvm-svn: 121354
 2010-12-09 02:56:12 +00:00
Dan Gohman
3d9fc7db03 Really check that the bits that will become zero are actually already zero 
before eliminating the operation that zeros them. This fixes rdar://8739316.

llvm-svn: 121353
 2010-12-09 02:52:17 +00:00
Eric Christopher
ea350b4c4b Fix up some comments. 
llvm-svn: 121351
 2010-12-09 01:57:45 +00:00
Owen Anderson
767a95816d Fix Thumb2 fixups for ldr. 
llvm-svn: 121350
 2010-12-09 01:51:07 +00:00
Jim Grosbach
5658d982b4 Add a textual message to the assert. 
llvm-svn: 121349
 2010-12-09 01:23:51 +00:00
Jim Grosbach
da9353523f Add a sanity check assert() for t2ADD/SUBrSPi instructions that they really are 
referencing the stack pointer as they say they are.

llvm-svn: 121347
 2010-12-09 01:22:19 +00:00
Jim Grosbach
fb71e10e93 When using multiple instructions to reference a frame index, make sure to 
update the opcode when necessary as well as the source register.

llvm-svn: 121346
 2010-12-09 01:22:13 +00:00
Jim Grosbach
e38a2a39c6 The add/sub SP instructions are really pseudos. The assembler should ignore 
them.

llvm-svn: 121345
 2010-12-09 01:21:27 +00:00
Jakob Stoklund Olesen
17b2e8c293 IntervalMap iterators are heavyweight, so avoid copying them around and use 
references instead.

Similarly, IntervalMap::begin() is almost as expensive as find(), so use find(x)
instead of begin().advanceTo(x);

This makes RegAllocBasic run another 5% faster.

llvm-svn: 121344
 2010-12-09 01:06:52 +00:00
Matt Beaumont-Gay
a8aa446938 Remove unused variables 
llvm-svn: 121343
 2010-12-09 01:04:43 +00:00
Owen Anderson
43177d405a Fix typo in Thumb2 branch fixup. 
llvm-svn: 121342
 2010-12-09 01:02:09 +00:00
Eric Christopher
64e662fce9 Stop confusing people, it's not really a chain, or a tumor. 
llvm-svn: 121340
 2010-12-09 00:57:19 +00:00
Bill Wendling
baf852a1d6 Remove extraneous semicolon. 
llvm-svn: 121338
 2010-12-09 00:51:54 +00:00
Bill Wendling
9205cc6ea8 Attempt to make the bit-twiddling readable resulted in the binary value being 
overwritten.

llvm-svn: 121337
 2010-12-09 00:44:33 +00:00
Bill Wendling
cd8fdfd65f The BLX instruction is encoded differently than the BL, because why not? In 
particular, the immediate has 20-bits of value instead of 21. And bit 0 is '0'
always. Going through the BL fixup encoding was trashing the "bit 0 is '0'"
invariant.

Attempt to get the encoding at slightly more correct with this.

llvm-svn: 121336
 2010-12-09 00:39:08 +00:00
Eric Christopher
0100a8fda4 Remove extraneous copy from DAG conversion for darwin tls. This was 
popping up at O0 when it wasn't folded and the fast allocator would
complain.

llvm-svn: 121330
 2010-12-09 00:27:58 +00:00
Owen Anderson
b956593730 Fix Thumb2 BCC encoding and fixups. 
llvm-svn: 121329
 2010-12-09 00:27:41 +00:00
Eric Christopher
cc8a622ca4 Add rsp to the uses for the same reason as 32-bit. 
llvm-svn: 121328
 2010-12-09 00:26:41 +00:00
Devang Patel
b3e0d80b1f DW_FORM_data1 may not provide sufficient room for vtable index, use _udata instead. 
This fixes radar 8730409.

llvm-svn: 121323
 2010-12-09 00:10:40 +00:00
Kevin Enderby
988dab6b5c Allow a slash, '/', as a prefix separator for X86. rdar://8741045 
llvm-svn: 121320
 2010-12-08 23:57:59 +00:00
Jakob Stoklund Olesen
ffc0f6586a Properly deal with empty intervals when checking for interference. 
llvm-svn: 121319
 2010-12-08 23:51:35 +00:00
Jason W Kim
e270068021 Style nit and whitespace cleanup 
llvm-svn: 121317
 2010-12-08 23:35:25 +00:00
Jim Grosbach
5a00173ead Clean up the add/sub w/ SP source reg instructions in Thumb2 a bit. Add a FIXME 
for more thorough cleanup.

llvm-svn: 121315
 2010-12-08 23:30:19 +00:00
Jim Grosbach
2eda2e0be9 Fix T2TwoRegImm and use it for t2ADDrSPi12 and friends. 
llvm-svn: 121314
 2010-12-08 23:24:29 +00:00
Jason W Kim
e8047d9ec4 Removed dead comment. 
llvm-svn: 121313
 2010-12-08 23:19:44 +00:00
Jason W Kim
2e6e50c1b0 ARM/MC/ELF TPsoft is now a proper pseudo inst. 
Added test to check bl __aeabi_read_tp gets emitted properly for ELF/ASM
as well as ELF/OBJ (including fixup)

Also added support for ELF::R_ARM_TLS_IE32

llvm-svn: 121312
 2010-12-08 23:14:44 +00:00
Jim Grosbach
7a9e43e642 T2TwoRegImm isn't right for t2SUBrSPi12. Use T2I instead. 
llvm-svn: 121311
 2010-12-08 23:13:01 +00:00
Jim Grosbach
4f11f0f871 Add operand encoding for Thumb2 subw SP + imm. rdar://8745434 
llvm-svn: 121310
 2010-12-08 23:12:09 +00:00
Jim Grosbach
a423fbc4c7 Add operand encoding for Thumb2 addw Rn + imm. rdar://8745434 
llvm-svn: 121309
 2010-12-08 23:04:16 +00:00
Bill Wendling
9756f7c7b0 Support the "target" encodings for the CB[N]Z instructions. 
llvm-svn: 121308
 2010-12-08 23:01:43 +00:00
Evan Cheng
9fcb62eed1 Fix an obvious cut-n-paste error. 
llvm-svn: 121307
 2010-12-08 23:01:18 +00:00
Jakob Stoklund Olesen
37df3f04c2 Implement very primitive hinting support in RegAllocGreedy. 
The hint is simply tried first and then forgotten if it couldn't be allocated
immediately.

llvm-svn: 121306
 2010-12-08 22:57:16 +00:00
Jim Grosbach
51082ed2a4 Add operand encoding for Thumb2 addw SP + imm. rdar://8745434 
llvm-svn: 121305
 2010-12-08 22:50:19 +00:00
Jim Grosbach
e1eb84a44a Parameterize opcode encoding bits for Thumb2 extended precision integer 
multiply instructions.

llvm-svn: 121301
 2010-12-08 22:38:41 +00:00
Jim Grosbach
13c16125f1 Fix operand encoding for Thumb2 extended precision multiplies. rdar://8745555 
llvm-svn: 121297
 2010-12-08 22:29:28 +00:00
Jakob Stoklund Olesen
3c81b6a50b Store (priority,regnum) pairs in the priority queue instead of providing an 
abstract priority queue interface in subclasses that want to override the
priority calculations.

Subclasses must provide a getPriority() implementation instead.

This approach requires less code as long as priorities are expressable as simple
floats, and it avoids the dangers of defining potentially expensive priority
comparison functions.

It also should speed up priority_queue operations since they no longer have to
chase pointers when comparing registers. This is not measurable, though.

Preferably, we shouldn't use floats to guide code generation. The use of floats
here is derived from the use of floats for spill weights. Spill weights have a
dynamic range that doesn't lend itself easily to a fixpoint implementation.

When someone invents a stable spill weight representation, it can be reused for
allocation priorities.

llvm-svn: 121294
 2010-12-08 22:22:41 +00:00
Eric Christopher
d492f798d1 Reword comment slightly. 
llvm-svn: 121293
 2010-12-08 22:21:42 +00:00
Jim Grosbach
063c38c6df Simplify T2 operand assignment notation a bit. No need to specify a bit range 
for the source field when it's the whole thing that's being referenced.

llvm-svn: 121291
 2010-12-08 22:10:43 +00:00
Devang Patel
e515e18523 Use type's file info while describing inheritance relationship. 
llvm-svn: 121289
 2010-12-08 21:46:37 +00:00
Eric Christopher
77d3a7b3fb Fix comment. 
llvm-svn: 121285
 2010-12-08 21:35:09 +00:00
Jakob Stoklund Olesen
f04d283db1 Trim includes. 
llvm-svn: 121283
 2010-12-08 21:12:00 +00:00
Devang Patel
90fd70aa09 Add support to create debug info for functions and methods. 
llvm-svn: 121281
 2010-12-08 20:42:44 +00:00
Jim Grosbach
5e900612ff Tweak ARM fixup value adjustments for Thumb to better handle the half-word 
ordering of thumb mode.

llvm-svn: 121280
 2010-12-08 20:32:07 +00:00
Devang Patel
53f05af4c1 Add support to create class type. 
llvm-svn: 121279
 2010-12-08 20:18:20 +00:00
Andrew Trick
fb72ca2129 Generalize PostRAHazardRecognizer so it can be used in any pass for 
both forward and backward scheduling. Rename it to
ScoreboardHazardRecognizer (Scoreboard is one word). Remove integer
division from the scoreboard's critical path.

llvm-svn: 121274
 2010-12-08 20:04:29 +00:00
Owen Anderson
d5c17d5981 Improve comment. 
llvm-svn: 121272
 2010-12-08 19:31:11 +00:00
Jim Grosbach
16cdaf34bc Add initializer. 
llvm-svn: 121262
 2010-12-08 15:36:45 +00:00
Evan Cheng
5582f058f4 Add comments. 
llvm-svn: 121238
 2010-12-08 06:29:02 +00:00
Jakob Stoklund Olesen
d638b989f2 Stub out RegAllocGreedy. 
This new register allocator is initially identical to RegAllocBasic, but it will
receive all of the tricks that RegAllocBasic won't get.

RegAllocGreedy will eventually replace linear scan.

llvm-svn: 121234
 2010-12-08 03:26:16 +00:00
Bill Wendling
dac1f24d98 Add support for loading from a constant pool. 
llvm-svn: 121226
 2010-12-08 01:57:09 +00:00
Devang Patel
b7a7988b6b Add support to create vector, array, enums etc... 
llvm-svn: 121224
 2010-12-08 01:50:15 +00:00