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Author SHA1 Message Date
Jakob Stoklund Olesen
b935aa1678 Remove the PR8954 workaround. 
llvm-svn: 123288
 2011-01-11 22:56:41 +00:00
Jakob Stoklund Olesen
37fe53c1a9 Fix a non-deterministic loop in llvm::MergeBlockIntoPredecessor. 
DT->changeImmediateDominator() trivially ignores identity updates, so there is
really no need for the uniqueing provided by SmallPtrSet.

I expect this to fix PR8954.

llvm-svn: 123286
 2011-01-11 22:54:38 +00:00
Jakob Stoklund Olesen
d7a523358c Enable LiveDebugVariables by default. 
llvm-svn: 123282
 2011-01-11 22:45:28 +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
Cameron Zwarich
b0e688cc7c Dial back the speculative fix for PR8954 a bit, so that we only recompute dominators 
once at the beginning of GVN instead of once per iteration.

llvm-svn: 123278
 2011-01-11 22:14:42 +00:00
Jakob Stoklund Olesen
1cd577b435 Don't insert DBG_VALUE instructions after the first terminator. 
For one, MachineBasicBlock::getFirstTerminator() doesn't understand what is
happening, and it also makes sense to have all control flow run through the
DBG_VALUE.

llvm-svn: 123277
 2011-01-11 22:11:16 +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
Devang Patel
7b5cf4eafc Appropriately truncate debug info range in dwarf output. 
This is not yet completely enabled.

llvm-svn: 123274
 2011-01-11 21:42:10 +00:00
Jakob Stoklund Olesen
add3ef6ca2 Put the Dominator improvements back in. They were not the cause of bootstrap miscomparisons. 
llvm-svn: 123273
 2011-01-11 21:23:09 +00:00
Cameron Zwarich
e8c1c44e01 Attempt to fix the bootstrap buildbot. Rafael says this works for him on x86-64 Linux. 
llvm-svn: 123270
 2011-01-11 20:23:34 +00:00
Jakob Stoklund Olesen
264d2e5c08 Speculatively revert the recent improvements to Dominators.h in an attempt to track down the gcc bootstrap miscompare. 
llvm-svn: 123254
 2011-01-11 19:26:30 +00:00
Daniel Dunbar
c9c0581897 McARM: Fill in GetMnemonicAcceptInfo(). 
llvm-svn: 123253
 2011-01-11 19:06:29 +00:00
Daniel Dunbar
f14e43062c McARM: Write a silly Python script to compute some hard coded info from the 
generated ARM match table, which is substantially more efficient than dealing
with tblgen.

llvm-svn: 123252
 2011-01-11 19:06:26 +00:00
Owen Anderson
a82627567b Remove dead variable, const-ref-ize an APInt. 
llvm-svn: 123248
 2011-01-11 18:26:37 +00:00
Chris Lattner
1674862564 this pass claims to preserve scev, make sure to tell it about deletions. 
llvm-svn: 123247
 2011-01-11 18:14:50 +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
8c0a70a30c some comment improvements. 
llvm-svn: 123243
 2011-01-11 17:11:59 +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
Jay Foad
993406aaba FixedNumOperandTraits and VariadicOperandTraits assumed that, given a 
"this" pointer for any subclass of User, you could static_cast it to
User* and then reinterpret_cast that to Use* to get the end of the
operand list. This isn't a safe assumption in general, because the
static_cast might adjust the "this" pointer. Fixed by having these
OperandTraits classes take an extra template parameter, which is the
subclass of User. This is groundwork for PR889.

llvm-svn: 123235
 2011-01-11 15:07:38 +00:00
Frits van Bommel
f5bd48972a Factor the actual simplification out of SimplifyIndirectBrOnSelect and into a new helper function so it can be reused in e.g. an upcoming SimplifySwitchOnSelect. 
No functional change.

llvm-svn: 123234
 2011-01-11 12:52:11 +00:00
Oscar Fuentes
82cc1fb69c Add to the CMake build some options and platform tests supported by 
the traditional build.

Patch by arrowdodger!

llvm-svn: 123233
 2011-01-11 12:31:54 +00:00
Oscar Fuentes
123864334b Made llvm_replace_compiler_option more robust. Use it on 
llvm_process_sources.

llvm-svn: 123232
 2011-01-11 12:31:34 +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
Eric Christopher
c6db56a31e Revert the testcase from the previous reverted commit. 
llvm-svn: 123227
 2011-01-11 09:20:44 +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
Eric Christopher
e86e1aecd8 Temporarily revert 123133, it's causing some regressions and I'm trying 
to get a testcase.

llvm-svn: 123225
 2011-01-11 09:02:09 +00:00
Chris Lattner
e5688368c6 update memdep when an instruction is deleted. This code isn't 
actually reached in the testcase in PR8954, but it's safe and good
practice.

llvm-svn: 123224
 2011-01-11 08:19:16 +00:00
Chris Lattner
a82a6cfe6d when MergeBlockIntoPredecessor merges two blocks, update MemDep if it 
is floating around in the ether.

llvm-svn: 123223
 2011-01-11 08:16:49 +00:00
Chris Lattner
dc7b2160ba Fix FoldSingleEntryPHINodes to update memdep and AA when it deletes 
phi nodes.  It is called from MergeBlockIntoPredecessor which is 
called from GVN, which claims to preserve these.

I'm skeptical that this is the actual problem behind PR8954, but
this is a stab in the right direction.

llvm-svn: 123222
 2011-01-11 08:13:40 +00:00
Chris Lattner
b1a9c9ed36 random cleanups 
llvm-svn: 123221
 2011-01-11 08:00:40 +00:00
Chris Lattner
feade29ab8 merge tests into one crash.ll test. 
llvm-svn: 123220
 2011-01-11 07:50:07 +00:00
Chris Lattner
5731a92f5b remove a bogus assertion: the latch block of a loop is not 
neccesarily an uncond branch to the header.  This fixes 
PR8955 (the assertion tripping).

llvm-svn: 123219
 2011-01-11 07:47:59 +00:00
Chris Lattner
14bf29d7a0 the GEP faq says that only inbounds geps are guaranteed to not overflow. 
llvm-svn: 123218
 2011-01-11 06:44:41 +00:00
Jakob Stoklund Olesen
43e92a1d28 Revert r123207: "Turn on memdep's verifyRemoved() in an attempt to smoke out the cause of our gcc bootstrap miscompare." 
It didn't.

llvm-svn: 123215
 2011-01-11 04:05:39 +00:00
Michael J. Spencer
6d4a8a7b72 Support/Path: Deprecate PathV1::isDirectory and replace all uses with PathV2::is_directory. 
llvm-svn: 123209
 2011-01-11 01:21:55 +00:00
Jakob Stoklund Olesen
d8abef4798 Turn on memdep's verifyRemoved() in an attempt to smoke out the cause of our gcc bootstrap miscompare. 
llvm-svn: 123207
 2011-01-11 01:18:03 +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
Chandler Carruth
acb82e863d FileCheck-ize a test, and move a no-longer calling test case to another 
file and make it actually test something...

llvm-svn: 123205
 2011-01-11 01:07:20 +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
5a4d64216f Move ExpandAtomic into the integer expansion routines - it's only used there. 
llvm-svn: 123202
 2011-01-11 00:36:08 +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
Dale Johannesen
cd78621861 Fix PR 8916 (qv for analysis), at least the immediate problem. 
There's an inherent tension in DAGCombine between assuming
that things will be put in canonical form, and the Depth
mechanism that disables transformations when recursion gets
too deep.  It would not surprise me if there's a lot of little
bugs like this one waiting to be discovered.  The mechanism
seems fragile and I'd suggest looking at it from a design viewpoint.

llvm-svn: 123191
 2011-01-10 21:53:07 +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