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17119 Commits

Author SHA1 Message Date
Bruno Cardoso Lopes
82c6fe3dfe Fix MRS encoding for arm and thumb. 
llvm-svn: 123778
 2011-01-18 21:31:35 +00:00
Bruno Cardoso Lopes
6e4c5af01e Fix the encoding of t2ISB by using the right class and also parse it correctly 
llvm-svn: 123776
 2011-01-18 21:17:09 +00:00
Bruno Cardoso Lopes
c1e21b06b9 Follow the current hack set and enable the correct parsing of bkpt while in thumb mode. 
llvm-svn: 123772
 2011-01-18 20:55:11 +00:00
Bruno Cardoso Lopes
94247155c4 Add support for parsing and encoding ARM's official syntax for the BFI instruction 
llvm-svn: 123770
 2011-01-18 20:45:56 +00:00
Jim Grosbach
6de3a4f76f Add a FIXME. 
llvm-svn: 123769
 2011-01-18 19:59:19 +00:00
Bruno Cardoso Lopes
13cefe452d Ensure Mips::GP is properly reloaded after a function call. Patch by Sasa Stankovic 
llvm-svn: 123768
 2011-01-18 19:50:18 +00:00
Bruno Cardoso Lopes
2d509b8b40 Negative zero is not legal on mips. Patch by Sasa Stankovic 
llvm-svn: 123766
 2011-01-18 19:41:41 +00:00
Bruno Cardoso Lopes
542853bcd7 Handle (i32,i32) => f64 in a cleaner way. Patch by Sasa Stankovic 
llvm-svn: 123763
 2011-01-18 19:38:25 +00:00
Bruno Cardoso Lopes
6c5db0236a Add support for mips32 madd and msub instructions. Patch by Akira Hatanaka 
llvm-svn: 123760
 2011-01-18 19:29:17 +00:00
Chris Lattner
08e1bf567f add a note 
llvm-svn: 123752
 2011-01-18 07:47:48 +00:00
Venkatraman Govindaraju
ecf49c6279 SPARC backend: Modified LowerCall and LowerFormalArguments so that they use CallingConv assignments. 
llvm-svn: 123749
 2011-01-18 06:09:55 +00:00
Daniel Dunbar
12dd48769d McARM: Use accessors where appropriate. 
llvm-svn: 123746
 2011-01-18 05:55:27 +00:00
Daniel Dunbar
51fef8d445 McARM: Fill in ASMOperand::dump() for memory operands. 
llvm-svn: 123745
 2011-01-18 05:55:21 +00:00
Daniel Dunbar
f966e16cb0 McARM: Make ARMOperand use a union where appropriate. 
llvm-svn: 123744
 2011-01-18 05:55:15 +00:00
Daniel Dunbar
0cff3f953b McARM: Unify ParseMemory() successfull return. 
llvm-svn: 123740
 2011-01-18 05:34:24 +00:00
Daniel Dunbar
3cb5e8b0cb McARM: Early exit on failure (NEFC). 
llvm-svn: 123739
 2011-01-18 05:34:17 +00:00
Daniel Dunbar
9ea6873c89 McARM: Always keep an offset expression, if used (instead of assuming == 0 if used but not present), and simplify logic. 
Also, clean up various non-sensicalisms in isMemModeRegThumb() and isMemModeImmThumb().

llvm-svn: 123738
 2011-01-18 05:34:11 +00:00
Daniel Dunbar
8d7ed1f6a8 McARM: Add a variety of asserts on the sanity of memory operands. 
llvm-svn: 123737
 2011-01-18 05:34:05 +00:00
Daniel Dunbar
aa5e17f3a7 McARM: Use a consistent marker for not-set OffsetRegNum. 
llvm-svn: 123736
 2011-01-18 05:33:57 +00:00
Daniel Dunbar
ba39b2fdc1 McARM: Start marking T2 address operands as such, for the benefit of the parser. 
llvm-svn: 123722
 2011-01-18 03:06:03 +00:00
Eric Christopher
e8aa8b114f The stub routine that we're calling uses test and so clobbers 
the flags.

llvm-svn: 123712
 2011-01-18 01:37:20 +00:00
Chris Lattner
047388c197 minor change to rafael's recent patches: if something is 
constant but requires a unique address, we can still put it in a
readonly section, just not a mergable one.

llvm-svn: 123711
 2011-01-18 01:23:44 +00:00
Jeffrey Yasskin
5f5e1f5ef1 Remove unused variables found by gcc-4.6's -Wunused-but-set-variable. 
llvm-svn: 123707
 2011-01-18 00:51:23 +00:00
Douglas Gregor
49f7d8c38c Add a missing <cctype> include, from Joerg Sonnenberger! 
llvm-svn: 123670
 2011-01-17 19:17:01 +00:00
Kalle Raiskila
7401b2a1db Split up RotateShift itinerary in SPU. 
'rotq*' and 'shlq*' instructions go to the odd pipeline,
wheras the inter-vector equivalents 'rot*', 'shl*' go 
to the even.

llvm-svn: 123622
 2011-01-17 13:33:19 +00:00
Kalle Raiskila
8eaf0e83d5 Don't crash SPU BE with memory accesses with big alignmnet. 
llvm-svn: 123620
 2011-01-17 11:59:20 +00:00
Evan Cheng
53ec6fc591 Materialize GA addresses with movw + movt pairs for Darwin in PIC mode. e.g. 
movw    r0, :lower16:(L_foo$non_lazy_ptr-(LPC0_0+4))
        movt    r0, :upper16:(L_foo$non_lazy_ptr-(LPC0_0+4))
LPC0_0:
        add     r0, pc, r0

It's not yet enabled by default as some tests are failing. I suspect bugs in
down stream tools.

llvm-svn: 123619
 2011-01-17 08:03:18 +00:00
Anton Korobeynikov
2a9d9ef36f Provide instruction sizes for ARMv5 variants of MUL instructions. 
This fixes PR8987

llvm-svn: 123598
 2011-01-16 21:28:33 +00:00
Anders Carlsson
d0103ebf92 Update README.txt to remove the DAE enhancement. 
llvm-svn: 123597
 2011-01-16 21:26:15 +00:00
Rafael Espindola
7933fffe38 Only put unnamed_addr constants in mergeable sections. Fixes PR8297. 
llvm-svn: 123585
 2011-01-16 17:19:34 +00:00
Chris Lattner
dde85de90f fix PR8514, a bug where the "heroic" transformation of shift/and 
into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.

llvm-svn: 123578
 2011-01-16 08:48:11 +00:00
Chris Lattner
91f1b21cf1 add some commentary 
llvm-svn: 123572
 2011-01-16 06:39:44 +00:00
Evan Cheng
144b435a15 Spill R4 if it's going to be used to restore SP from FP. 
llvm-svn: 123567
 2011-01-16 05:14:33 +00:00
Venkatraman Govindaraju
fe346f6cba Implement AnalyzeBranch in Sparc Backend. 
llvm-svn: 123561
 2011-01-16 03:15:11 +00:00
Chris Lattner
24ea7f696e fix PR8981, a crash trying to form a conditional inc with a floating point compare. 
llvm-svn: 123560
 2011-01-16 02:56:53 +00:00
Chris Lattner
c4d1d86d3e reapply my fix for PR8961 with a tweak to properly handle 
multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.

llvm-svn: 123559
 2011-01-16 02:27:38 +00:00
Chandler Carruth
a3261fcca5 Simplify a README.txt entry significantly to expose the core issue. 
llvm-svn: 123556
 2011-01-16 01:40:23 +00:00
Eric Christopher
d675e0b362 80-col. 
llvm-svn: 123505
 2011-01-15 00:25:09 +00:00
Bob Wilson
e6b8ba1ae4 Fix a comment. 
llvm-svn: 123497
 2011-01-15 00:09:18 +00:00
Eric Christopher
b00cef51d8 Fix 80-cols. 
llvm-svn: 123494
 2011-01-14 23:50:53 +00:00
Ted Kremenek
4b09cdedb2 'HiReg' is written but never read. Nuke its 
declaration and its assignments.

Found by clang static analyzer.

llvm-svn: 123486
 2011-01-14 22:34:13 +00:00
Anton Korobeynikov
1f9df99db1 Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff. 
llvm-svn: 123476
 2011-01-14 21:58:08 +00:00
Anton Korobeynikov
6b2f110a3d Cleanup 
llvm-svn: 123475
 2011-01-14 21:57:58 +00:00
Chris Lattner
eba719204c revert my fastisel patch again which apparently still gives the 
llvm-gcc-i386-linux-selfhost buildbot heartburn...

llvm-svn: 123431
 2011-01-14 06:14:33 +00:00
Chris Lattner
ee950eeb24 reapply r123414 now that the botz are calmed down and the fix is already in. 
llvm-svn: 123427
 2011-01-14 04:24:28 +00:00
Evan Cheng
0cdd5547f1 Completed :lower16: / :upper16: support for movw / movt pairs on Darwin. 
- Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first.
- Added support for Thumb2 :lower16: and :upper16: fix up.
- Added :upper16: and :lower16: relocation support to mach-o object writer.

llvm-svn: 123424
 2011-01-14 02:38:49 +00:00
Chris Lattner
349735530b r123414 broke llvm-gcc bootstrap apparently, revert 
llvm-svn: 123422
 2011-01-14 02:07:32 +00:00
Chris Lattner
5baec05809 fix PR8961 - a fast isel miscompilation where we'd insert a new instruction 
after sext's generated for addressing that got folded.  Previously we compiled
test5 into:

_test5:                                 ## @test5
## BB#0:
        movq    -8(%rsp), %rax          ## 8-byte Reload
        movq    (%rdi,%rax), %rdi
        addq    %rdx, %rdi
        movslq  %esi, %rax
        movq    %rax, -8(%rsp)          ## 8-byte Spill
        movq    %rdi, %rax
        ret

which is insane and wrong.  Now we produce:

_test5:                                 ## @test5
## BB#0:
	movslq	%esi, %rax
	movq	(%rdi,%rax), %rax
	addq	%rdx, %rax
	ret

llvm-svn: 123414
 2011-01-14 00:01:01 +00:00
Owen Anderson
58bcb5d7f2 Recognize alternative register names like ip -> r12. 
Fixes <rdar://problem/8857982>.

llvm-svn: 123409
 2011-01-13 22:50:36 +00:00
Jakob Stoklund Olesen
918de3a3b8 Fix a few more places that should use MBB::getLastNonDebugInstr(). 
llvm-svn: 123408
 2011-01-13 22:47:43 +00:00
Chris Lattner
d2d217dc46 typo 
llvm-svn: 123406
 2011-01-13 22:11:56 +00:00
Chris Lattner
6745cd150c memcpy + metadata = bliss :) 
llvm-svn: 123405
 2011-01-13 22:08:15 +00:00
Owen Anderson
18dfab2332 Add support to the ARM MC infrastructure to support mcr and friends. This requires supporting 
the symbolic immediate names used for these instructions, fixing their pretty-printers, and
adding proper encoding information for them.

With this, we can properly pretty-print and encode assembly like:
	mrc p15, #0, r3, c13, c0, #3

Fixes <rdar://problem/8857858>.

llvm-svn: 123404
 2011-01-13 21:46:02 +00:00
Jakob Stoklund Olesen
0f2b9d9dc4 Teach frame lowering to ignore debug values after the terminators. 
llvm-svn: 123399
 2011-01-13 21:28:52 +00:00
Bob Wilson
569cd41943 Tidy comments, indentation, and 80-column violations. 
llvm-svn: 123397
 2011-01-13 21:10:12 +00:00
Kevin Enderby
eee2f3489b Fix ARMAsmParser::ParseOperand() to allow it to parse . as a branch target and 
directional local labels like 1f and 2b.

llvm-svn: 123393
 2011-01-13 20:32:36 +00:00
Jim Grosbach
767dfbf685 When updating a tSpill/tRestore instruction to be a tSTRr/tLDRr, correctly 
set up the source operands. The original instr has an immediate operand that
should be replaced with the frame reg operand rather than just adding the
reg operand. Previously, the instruction ended up with too many operands
causing an assert() when adding the default predicate. rdar://8825456

llvm-svn: 123387
 2011-01-13 19:16:48 +00:00
Evan Cheng
cc474b4864 Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step 
in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.

llvm-svn: 123369
 2011-01-13 07:58:56 +00:00
Eric Christopher
3821f63f4b Experiment with changing the default 32-bit linux stack alignment to 
16 bytes for PR8969. Update all testcases accordingly.

llvm-svn: 123367
 2011-01-13 06:47:10 +00:00
Kevin Enderby
1f82daa2d8 Add a FIXME and two asserts for now in the ARMAsmParser when it sees .code 16 or 
.code 32 if the TargetMachine's isThumb() boolean does not match.  The correct
fix is to switch ARM subtargets at that point and is tracked by rdar://8856789
which is bigger task.

llvm-svn: 123353
 2011-01-13 01:07:01 +00:00
Jason W Kim
af9782e470 Change call to Error() to assert() 
llvm-svn: 123350
 2011-01-13 00:27:00 +00:00
Jason W Kim
5c1d7cc0ca Added clarifying comment 
llvm-svn: 123341
 2011-01-12 23:25:02 +00:00
Jason W Kim
6464be5b92 JimG sez: "The value-kinds look like masks, but they're not consistently used 
that way, unfortunately. If you want to change them to work additively instead
of a one-variant-kind-per-symbolref, that's great and I completely agree it's
worth doing, but it really should be a separate patch. Until then, this isn't
correct."

So I am reverting this bit until a more opportune time.

llvm-svn: 123340
 2011-01-12 23:21:49 +00:00
Bill Wendling
e82361731d Sort the register list based on the *actual* register numbers rather than the 
enum values we give to them. <rdar://problem/8823730>

llvm-svn: 123321
 2011-01-12 21:20:59 +00:00
Matt Beaumont-Gay
fc76b0ce6e Mostly undo r123297, but move the default case in EvaluateAsPCRel to the top 
of the switch block to appease GCC.

llvm-svn: 123317
 2011-01-12 18:02:55 +00:00
Nick Lewycky
fb3f7c11f1 Add another note taken from the gcc bugzilla. 
llvm-svn: 123315
 2011-01-12 09:06:19 +00:00
Venkatraman Govindaraju
2d89fea217 Implement RETURNADDR and FRAMEADDR lowering in SPARC backend. 
llvm-svn: 123310
 2011-01-12 05:08:36 +00:00
Venkatraman Govindaraju
59e9ffc998 Remove SPARC backend getpcx instruction's Uses. Also, insert an assert to 
ensure %o7 is not assigned as the destination of getpcx instruction.

llvm-svn: 123304
 2011-01-12 03:52:59 +00:00
Venkatraman Govindaraju
816f7dfed0 Fix SPARC backend call instruction so that arguments passed through registers 
are correctly marked as used instead of passing all possible argument registers
as used.  

llvm-svn: 123301
 2011-01-12 03:18:21 +00:00
Matt Beaumont-Gay
033b288e84 Prefer llvm_unreachable to assert(0) 
llvm-svn: 123297
 2011-01-12 01:42:42 +00:00
Jason W Kim
ae183f9862 1. Support ELF pcrel relocations for movw/movt: 
R_ARM_MOVT_PREL and R_ARM_MOVW_PREL_NC.
2. Fix minor bug in ARMAsmPrinter - treat bitfield flag as a bitfield, not an enum.
3. Add support for 3 new elf section types (no-ops)

llvm-svn: 123294
 2011-01-12 00:19:25 +00:00
Jason W Kim
db6eddeea3 Workaround for bug 8721. 
.s Test added.

llvm-svn: 123292
 2011-01-11 23:53:41 +00:00
Venkatraman Govindaraju
f681d4e782 SPARC backend: correct ICC/FCC uses for ADDX and SELECT_CC 
llvm-svn: 123281
 2011-01-11 22:38:28 +00:00
Evan Cheng
05ef00f4dc Clean up ARM subtarget code by using Triple ADT. 
llvm-svn: 123276
 2011-01-11 21:46:47 +00:00
Daniel Dunbar
c9c0581897 McARM: Fill in GetMnemonicAcceptInfo(). 
llvm-svn: 123253
 2011-01-11 19:06:29 +00:00
Bob Wilson
63547ae69e Fix a comment: We now have intrinsics for vcvtr. 
llvm-svn: 123246
 2011-01-11 17:56:41 +00:00
Chris Lattner
586e7af07d Fix PR8946, a missing reg/reg form of movdqu. 
llvm-svn: 123242
 2011-01-11 17:04:55 +00:00
Daniel Dunbar
0cc3d4d8bc McARM: Sketch some logic for determining when to add carry set and predication code operands based on the "canonical mnemonic". 
llvm-svn: 123239
 2011-01-11 15:59:53 +00:00
Daniel Dunbar
fbc0b96c34 McARM: Add more hard coded logic to SplitMnemonicAndCC to also split out the 
carry setting flag from the mnemonic.

Note that this currently involves me disabling a number of working cases in
arm_instructions.s, this is a hopefully short term evil which will be rapidly
fixed (and greatly surpassed), assuming my current approach flies.

llvm-svn: 123238
 2011-01-11 15:59:50 +00:00
Kalle Raiskila
492a821e21 Fix a thinko in 123226 that caused test failures on "other" platforms. 
llvm-svn: 123229
 2011-01-11 11:27:56 +00:00
Kalle Raiskila
457fa0b3bc Add a "nop filler" pass to SPU. 
Filling no-ops is done just before emitting of assembly,
when the instruction stream is final. No-ops are inserted
to align the instructions so the dual-issue of the pipeline
is utilized. This speeds up generated code with a minimum of 
1% on a select set of algorithms.

This pass may be redundant if the instruction scheduler and 
all subsequent passes that modify the instruction stream 
(prolog+epilog inserter, register scavenger, are there others?)
are made aware of the instruction alignments.

llvm-svn: 123226
 2011-01-11 09:07:54 +00:00
Chandler Carruth
250dce460c Teach constant folding to perform conversions from constant floating 
point values to their integer representation through the SSE intrinsic
calls. This is the last part of a README.txt entry for which I have real
world examples.

llvm-svn: 123206
 2011-01-11 01:07:24 +00:00
Owen Anderson
4479341626 Fix a random missed optimization by making InstCombine more aggressive when determining which bits are demanded by 
a comparison against a constant.

llvm-svn: 123203
 2011-01-11 00:36:45 +00:00
Eric Christopher
68263285d5 Even if we don't have 7 bytes of stack space we may need to save and 
restore the stack pointer from the frame pointer on thumbv6.

Fixes rdar://8819685

llvm-svn: 123196
 2011-01-11 00:16:04 +00:00
Eric Christopher
934fa0fca0 Expand on the safeness of restoring the sp from the fp a bit more. 
llvm-svn: 123193
 2011-01-10 23:10:59 +00:00
Chris Lattner
c46188944e +0.0 vs -0.0 differences can be handled by looking at the user of the 
operation in some cases.

llvm-svn: 123190
 2011-01-10 21:01:17 +00:00
Daniel Dunbar
0e9ece99bb McARM: Flush out hard coded known non-predicated mnemonic list. 
llvm-svn: 123189
 2011-01-10 21:01:03 +00:00
Daniel Dunbar
3567bd2bcb McARM: Mark some T2 ...s instructions as codegen only, they aren't real 
instructions but are restricted pseudo forms.

llvm-svn: 123177
 2011-01-10 15:26:39 +00:00
Daniel Dunbar
acb825eae8 ARM/MC: Mark several '...S' instructions as codegen only, they aren't real 
instructions but are restricted pseudo forms.

llvm-svn: 123176
 2011-01-10 15:26:35 +00:00
Daniel Dunbar
9e911c13c5 MC/ARM/AsmParser: Minor nitty fixes. 
llvm-svn: 123175
 2011-01-10 15:26:21 +00:00
Anton Korobeynikov
e74f0595f3 Fix merge fallout 
llvm-svn: 123172
 2011-01-10 12:56:18 +00:00
Anton Korobeynikov
abd9a868df Update CMake stuff 
llvm-svn: 123171
 2011-01-10 12:39:23 +00:00
Anton Korobeynikov
cf5967630b Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
llvm-svn: 123170
 2011-01-10 12:39:04 +00:00
Daniel Dunbar
d17b4ac127 MC/ARM/AsmParser: Split out SplitMnemonicAndCC(). 
llvm-svn: 123169
 2011-01-10 12:24:52 +00:00
Jakob Stoklund Olesen
32f1783ca1 Simplify a bunch of isVirtualRegister() and isPhysicalRegister() logic. 
These functions not longer assert when passed 0, but simply return false instead.

No functional change intended.

llvm-svn: 123155
 2011-01-10 02:58:51 +00:00
Chris Lattner
2bd48ecd43 expand on a note 
llvm-svn: 123145
 2011-01-10 00:33:01 +00:00
Chris Lattner
7926b7035f typo 
llvm-svn: 123142
 2011-01-09 23:48:41 +00:00
Chris Lattner
fc6d425076 xref a PR # 
llvm-svn: 123141
 2011-01-09 23:42:22 +00:00
Chandler Carruth
a4d454ae5e Add a note about the inability to model FP -> int conversions which 
perform rounding other than truncation in the IR. Common C code for this
turns into really an LLVM intrinsic call that blocks a lot of further
optimizations.

llvm-svn: 123135
 2011-01-09 22:36:18 +00:00
Jakob Stoklund Olesen
957748e7ac Teach TargetRegisterInfo how to cram stack slot indexes in with the virtual and 
physical register numbers.

This makes the hack used in LiveInterval official, and lets LiveInterval be
oblivious of stack slots.

The isPhysicalRegister() and isVirtualRegister() predicates don't know about
this, so when a variable may contain a stack slot, isStackSlot() should always
be tested first.

llvm-svn: 123128
 2011-01-09 21:17:37 +00:00
Chandler Carruth
2a30077fed Add a note about a missed FP optimization. 
llvm-svn: 123126
 2011-01-09 21:00:19 +00:00
Chandler Carruth
17c1672ea9 Another missed memset in std::vector initialization. 
llvm-svn: 123116
 2011-01-09 11:29:57 +00:00
Chandler Carruth
dcbd7b6eaa Fix a cut-paste-o so that the sample code is correct for my last note. 
Also, switch to a more clear 'sink' function with its declaration to
avoid any confusion about 'g'. Thanks for the suggestion Frits.

llvm-svn: 123113
 2011-01-09 10:10:59 +00:00
Chandler Carruth
3de0da8801 Another missed optimization of trivial vector code. 
llvm-svn: 123112
 2011-01-09 09:58:36 +00:00
Chandler Carruth
9220d9fa48 Add a note about vector's size-constructor producing dead stores. 
llvm-svn: 123111
 2011-01-09 09:58:33 +00:00
Jakob Stoklund Olesen
ed53ab1635 Replace TargetRegisterInfo::printReg with a PrintReg class that also works without a TRI instance. 
Print virtual registers numbered from 0 instead of the arbitrary
FirstVirtualRegister. The first virtual register is printed as %vreg0.
TRI::NoRegister is printed as %noreg.

llvm-svn: 123107
 2011-01-09 03:05:53 +00:00
Chandler Carruth
815cbfb43c Add a note about a missed memset optimization from std::fill. 
llvm-svn: 123103
 2011-01-09 01:32:55 +00:00
Jakob Stoklund Olesen
e2e0850651 Fix the last virtual register enumerations. 
llvm-svn: 123102
 2011-01-08 23:11:11 +00:00
Evan Cheng
1afd04fc59 Recognize inline asm 'rev /bin/bash, ' as a bswap intrinsic call. 
llvm-svn: 123048
 2011-01-08 01:24:27 +00:00
Evan Cheng
aa16fd02ad Do not model all INLINEASM instructions as having unmodelled side effects. 
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.

llvm-svn: 123044
 2011-01-07 23:50:32 +00:00
Bob Wilson
eb4521fbcb Add an explanatory message for an assertion. 
llvm-svn: 123042
 2011-01-07 23:40:46 +00:00
Matt Beaumont-Gay
68a61cf6dd Eliminate variable only used in debug builds. 
llvm-svn: 123040
 2011-01-07 22:34:58 +00:00
Bob Wilson
c485ff3ced Lower some BUILD_VECTORS using VEXT+shuffle. 
Patch by Tim Northover.

llvm-svn: 123035
 2011-01-07 21:37:30 +00:00
Benjamin Kramer
62b5a4d14c Revert 122959, it needs more thought. Add it back to README.txt with additional notes. 
llvm-svn: 123030
 2011-01-07 20:42:20 +00:00
Evan Cheng
ae26b91353 Revert r122955. It seems using movups to lower memcpy can cause massive regression (even on Nehalem) in edge cases. I also didn't see any real performance benefit. 
llvm-svn: 123015
 2011-01-07 19:35:30 +00:00
Bob Wilson
22f18a7e94 Add ARM patterns to match EXTRACT_SUBVECTOR nodes. 
Also fix an off-by-one in SelectionDAGBuilder that was preventing shuffle
vectors from being translated to EXTRACT_SUBVECTOR.
Patch by Tim Northover.

The test changes are needed to keep those spill-q tests from testing aligned
spills and restores.  If the only aligned stack objects are spill slots, we
no longer realign the stack frame.  Prior to this patch, an EXTRACT_SUBVECTOR
was legalized by loading from the stack, which created an aligned frame index.
Now, however, there is nothing except the spill slot in the stack frame, so
I added an aligned alloca.

llvm-svn: 122995
 2011-01-07 04:59:04 +00:00
Chris Lattner
2fd8a095b1 With Benjamin's recent amazing patches, we should be able to do even better things :) 
llvm-svn: 122978
 2011-01-06 22:25:00 +00:00
Bob Wilson
461eb28678 PR8921: LDM/POP do not support interworking prior to v5t. 
llvm-svn: 122970
 2011-01-06 19:24:41 +00:00
Bob Wilson
f4a821c3d3 Remove extra whitespace. 
llvm-svn: 122969
 2011-01-06 19:24:36 +00:00
Bob Wilson
42b8976610 Fix comment typo. 
llvm-svn: 122968
 2011-01-06 19:24:32 +00:00
Benjamin Kramer
4e31a65344 Add a note from llvmdev, this time with more info. 
llvm-svn: 122966
 2011-01-06 17:35:50 +00:00
Rafael Espindola
64814fff0b Correctly disassemble truncated asm. 
Patch by Richard Simth.

llvm-svn: 122962
 2011-01-06 16:48:42 +00:00
Benjamin Kramer
33e41f4986 EarlyCSE does this now (and GVN always did it). 
llvm-svn: 122960
 2011-01-06 13:19:46 +00:00
Benjamin Kramer
5834b2bab8 InstCombine: If we call llvm.objectsize on a malloc call we can replace it with the size passed to malloc. 
llvm-svn: 122959
 2011-01-06 13:11:05 +00:00
Benjamin Kramer
dcff486813 Remove dead code and silence warnings. 
llvm-svn: 122957
 2011-01-06 13:01:02 +00:00
Evan Cheng
1a1771584e Use movups to lower memcpy and memset even if it's not fast (like corei7). 
The theory is it's still faster than a pair of movq / a quad of movl. This
will probably hurt older chips like P4 but should run faster on current
and future Intel processors. rdar://8817010

llvm-svn: 122955
 2011-01-06 07:58:36 +00:00
Chris Lattner
40973baa5f add a note about object size from drystone, add a poorly optimized loop from 179.art. 
llvm-svn: 122954
 2011-01-06 07:41:22 +00:00
Chris Lattner
69ff12968c add a trivial instcombine missed in Dhrystone 
llvm-svn: 122953
 2011-01-06 07:09:23 +00:00
Evan Cheng
cb39cc2164 Re-implement r122936 with proper target hooks. Now getMaxStoresPerMemcpy 
etc. takes an option OptSize. If OptSize is true, it would return
the inline limit for functions with attribute OptSize.

llvm-svn: 122952
 2011-01-06 06:52:41 +00:00
Bill Wendling
a59afdaec5 PR8919 - LLVM incorrectly generates "_alloca" as the stack probing call. That 
works only on MinGW32. On 64-bit, the function to call is "__chkstk".
Patch by KS Sreeram!

llvm-svn: 122934
 2011-01-06 00:50:34 +00:00
Bill Wendling
fae0dd1afa PR8918 - When used with MinGW64, LLVM generates a "calll __main" at the 
beginning of the "main" function. The assembler complains about the invalid
suffix for the 'call' instruction. The right instruction is "callq __main".
Patch by KS Sreeram!

llvm-svn: 122933
 2011-01-06 00:47:10 +00:00
Chris Lattner
3ef9db5cd4 fix PR8900, a shuffle miscompilation. Patch by Nadav Rotem! 
llvm-svn: 122921
 2011-01-05 22:28:46 +00:00
Chris Lattner
0caa2500c0 silence more self assignment warnings. 
llvm-svn: 122920
 2011-01-05 22:26:52 +00:00
Chris Lattner
d419fe1dfe fix some -Wself-assign warnings. 
llvm-svn: 122893
 2011-01-05 18:41:05 +00:00
Wesley Peck
b6eccbe55a Commit 122778 broke DWARF debug output when using the MBlaze backend. Fixed by overriding TargetFrameInfo::getFrameIndexOffset to take into account the new frame index information. 
llvm-svn: 122889
 2011-01-05 17:34:20 +00:00
Jakob Stoklund Olesen
76e782c385 Use the EdgeBundles analysis in X86FloatingPoint instead of recomputing CFG 
bundles in the pass.

llvm-svn: 122833
 2011-01-04 21:10:11 +00:00
Jakob Stoklund Olesen
abf8941a60 Turn the EdgeBundles class into a stand-alone machine CFG analysis pass. 
The analysis will be needed by both the greedy register allocator and the
X86FloatingPoint pass. It only needs to be computed once when the CFG doesn't
change.

This pass is very fast, usually showing up as 0.0% wall time.

llvm-svn: 122832
 2011-01-04 21:10:05 +00:00
Dale Johannesen
c7168aa6fe Eliminate a warning compiling with llvm-gcc. (IMO the 
warning is overzealous but gcc is what it is.)

llvm-svn: 122829
 2011-01-04 19:31:24 +00:00
Andrew Trick
3637733170 Fix the ARM IIC_iCMPsi itinerary and add an important assert. 
llvm-svn: 122794
 2011-01-04 00:32:57 +00:00
Bill Wendling
b402d3881e Formatting changes. No functionality change. 
llvm-svn: 122789
 2011-01-03 23:59:05 +00:00
Evan Cheng
25f7df1bce Use pushq / popq instead of subq $8, %rsp / addq $8, %rsp to adjust stack in 
prologue and epilogue if the adjustment is 8. Similarly, use pushl / popl if
the adjustment is 4 in 32-bit mode.

In the epilogue, takes care to pop to a caller-saved register that's not live
at the exit (either return or tailcall instruction).
rdar://8771137

llvm-svn: 122783
 2011-01-03 22:53:22 +00:00
Wesley Peck
d22aae0d68 Fix more stack layout issues in the MBlaze backend. 
llvm-svn: 122778
 2011-01-03 21:40:26 +00:00
Benjamin Kramer
a58b69aa9d Try to reuse the value when lowering memset. 
This allows us to compile:
  void test(char *s, int a) {
    __builtin_memset(s, a, 15);
  }
into 1 mul + 3 stores instead of 3 muls + 3 stores.

llvm-svn: 122710
 2011-01-02 19:57:05 +00:00
Oscar Fuentes
6514b0ac68 A workaround for a bug in cmake 2.8.3 diagnosed on PR 8885. 
llvm-svn: 122706
 2011-01-02 19:32:31 +00:00
Chris Lattner
222b24e2de update a bunch of entries. 
llvm-svn: 122700
 2011-01-02 18:31:38 +00:00
Chris Lattner
f669d6a901 Allow loop-idiom to run on multiple BB loops, but still only scan the loop 
header for now for memset/memcpy opportunities.  It turns out that loop-rotate
is successfully rotating loops, but *DOESN'T MERGE THE BLOCKS*, turning "for 
loops" into 2 basic block loops that loop-idiom was ignoring.

With this fix, we form many *many* more memcpy and memsets than before, including
on the "history" loops in the viterbi benchmark, which look like this:

        for (j=0; j<MAX_history; ++j) {
          history_new[i][j+1] = history[2*i][j];
        }

Transforming these loops into memcpy's speeds up the viterbi benchmark from
11.98s to 3.55s on my machine.  Woo.

llvm-svn: 122685
 2011-01-02 07:58:36 +00:00
Chris Lattner
9dadac901f a missed __builtin_object_size case. 
llvm-svn: 122676
 2011-01-01 22:57:31 +00:00
Chris Lattner
e3e3cb83a5 various updates. 
llvm-svn: 122675
 2011-01-01 22:52:11 +00:00
Rafael Espindola
55f7a5057d Add support for the 'H' modifier. 
llvm-svn: 122667
 2011-01-01 20:58:46 +00:00
Anton Korobeynikov
d37cb4cd1c Model operand restrictions of mul-like instructions on ARMv5 via 
earlyclobber stuff. This should fix PRs 2313 and 8157.

Unfortunately, no testcase, since it'd be dependent on register
assignments.

llvm-svn: 122663
 2011-01-01 20:38:38 +00:00