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42662 Commits

Author SHA1 Message Date
Devang Patel
fa145a94d1 Simplify. 
Do not count use of sdisel for single call instruction.

llvm-svn: 117316
 2010-10-25 21:31:46 +00:00
Owen Anderson
e5e0dcd665 Add correct encodings for NEON vabal. 
llvm-svn: 117315
 2010-10-25 21:29:04 +00:00
Dan Gohman
20a3dd4ee1 Fix chaining in TBAA's pointsToConstantMemory. 
llvm-svn: 117314
 2010-10-25 21:24:55 +00:00
Devang Patel
3779ad5d59 Add counters to count basic blocks and machine basic blocks with out of order line number info. 
Add counters to count how many basic blocks are entirely selected by fastisel.

llvm-svn: 117310
 2010-10-25 20:55:43 +00:00
Owen Anderson
3eff0b86a5 Add correct NEON encodings for vaba. 
llvm-svn: 117309
 2010-10-25 20:52:57 +00:00
Devang Patel
24a6b791b6 Add simple counter to count no. of basic blocks without any line number information. At -O0, these basic block coule cause less than optimial debugging experience. 
llvm-svn: 117307
 2010-10-25 20:45:32 +00:00
Dan Gohman
cdc30324f1 Only read one bit for testing for a readonly type, leaving the other 
bits open for future uses.

llvm-svn: 117301
 2010-10-25 20:22:29 +00:00
Daniel Dunbar
5cbb066ea3 MC/AsmParser: Fix relative precedence of {+,-} and comparison ops. 
llvm-svn: 117299
 2010-10-25 20:18:56 +00:00
Daniel Dunbar
97fa30f53b MC/AsmLexer: Fix bug in source location for Slash token. 
llvm-svn: 117298
 2010-10-25 20:18:53 +00:00
Owen Anderson
61f5b3f2dc Attempt to provide correct encodings for NEON vbit and vbif, even though we can't test them at the moment. 
llvm-svn: 117294
 2010-10-25 20:17:22 +00:00
Owen Anderson
072692331e Provide correct NEON encodings for vbsl. 
llvm-svn: 117293
 2010-10-25 20:13:13 +00:00
Jim Grosbach
1a13b873e7 imm12 operands aren't Thumb2 only, so rename the printer helper function. 
llvm-svn: 117291
 2010-10-25 20:00:01 +00:00
Dan Gohman
3bce49a02a Add a comment. 
llvm-svn: 117288
 2010-10-25 19:47:25 +00:00
Owen Anderson
59e85cbd66 Add correct instruction encodings for vbic, vorn, and vmvn. 
llvm-svn: 117282
 2010-10-25 18:43:52 +00:00
Rafael Espindola
7f67e5ad77 Add a virtual destructor. 
llvm-svn: 117280
 2010-10-25 18:38:32 +00:00
Owen Anderson
2824342fac Provide correct NEON encodings for vand, veor, and vorr. 
llvm-svn: 117279
 2010-10-25 18:28:30 +00:00
Owen Anderson
ba261b092c Add NEON encoding tests for vcgt and vacgt. 
llvm-svn: 117276
 2010-10-25 18:03:59 +00:00
Rafael Espindola
5748458e7d Add support for emitting ARM file attributes. 
llvm-svn: 117275
 2010-10-25 17:50:35 +00:00
Owen Anderson
3a5f798790 Add tests for NEON encodings of vcge and vacge. 
llvm-svn: 117274
 2010-10-25 17:49:32 +00:00
Owen Anderson
757022131f Add a warning about our inability to test the encoding of vceq with immediate zero. 
llvm-svn: 117273
 2010-10-25 17:33:02 +00:00
Jakob Stoklund Olesen
7aeb8acd65 In which I learn how to forward declare template classes. 
llvm-svn: 117272
 2010-10-25 17:27:30 +00:00
Dan Gohman
9d63075905 Update comments; BasicAA is no longer necessarily the end of the chain. 
llvm-svn: 117268
 2010-10-25 16:29:52 +00:00
Dan Gohman
67e229bec7 Reintroduce these asserts, now that BasicAA is a normal AliasAnalysis pass. 
llvm-svn: 117266
 2010-10-25 16:28:57 +00:00
Dan Gohman
96e34e87ca Fix a case where instcombine was stripping metadata (and alignment) 
from stores when folding in bitcasts.

llvm-svn: 117265
 2010-10-25 16:16:27 +00:00
Charles Davis
42270b5d54 Add a new 'hotpatch' attribute. This attribute will insert a two-byte no-op 
instruction at the beginning of each function that has the attribute, allowing
the function to be easily hooked and/or patched.

llvm-svn: 117264
 2010-10-25 15:37:09 +00:00
Duncan Sands
8119017726 ATTRIBUTE_UNUSED has been renamed to LLVM_ATTRIBUTE_UNUSED. 
Rather than rename this instance, use the cast-to-void idiom
instead.  This will hopefully fix the windows buildbots.

llvm-svn: 117262
 2010-10-25 13:10:03 +00:00
Rafael Espindola
c6e7790c4b Add X86::reloc_global_offset_table and use it to have a single place where 
we check for _GLOBAL_OFFSET_TABLE_.

llvm-svn: 117241
 2010-10-24 17:35:42 +00:00
Duncan Sands
5b25503aab Fix PR8445: a block with no predecessors may be the entry block, in which case 
it isn't unreachable and should not be zapped.  The check for the entry block
was missing in one case: a block containing a unwind instruction.  While there,
do some small cleanups: "M" is not a great name for a Function* (it would be
more appropriate for a Module*), change it to "Fn"; use Fn in more places.

llvm-svn: 117224
 2010-10-24 12:23:30 +00:00
Benjamin Kramer
86b0370b66 SmallVectorize. 
llvm-svn: 117213
 2010-10-23 17:10:24 +00:00
Eric Christopher
0dab5810aa Move rejection of NEON parameters earlier in fast isel call processing, 
note that we can actually handle some f64 arguments.

llvm-svn: 117209
 2010-10-23 09:37:17 +00:00
Benjamin Kramer
ed68a7877c Make the disassembler tables const so they end up in read-only memory. 
llvm-svn: 117206
 2010-10-23 09:10:44 +00:00
Michael J. Spencer
87c8212d41 X86: Emit _fltused instead of __fltused on Windows x64. 
llvm-svn: 117205
 2010-10-23 09:06:59 +00:00
Chandler Carruth
7dd652736f Move the remaining attribute macros to systematic names based on the attribute 
name and prefixed with 'LLVM_'.

llvm-svn: 117203
 2010-10-23 08:40:19 +00:00
Chandler Carruth
ea67aaa252 Remove a define which is never referenced. 
llvm-svn: 117202
 2010-10-23 08:25:16 +00:00
Chandler Carruth
7799a873bb Switch attribute macros to use 'LLVM_' as a prefix. We retain the old names 
until other LLVM projects using these are cleaned up.

llvm-svn: 117200
 2010-10-23 08:10:43 +00:00
Chandler Carruth
25324e76ae Fix a likely bug in an assertion by adding parentheses around '||'. This bug 
was found by a GCC warning. ;]

llvm-svn: 117199
 2010-10-23 07:46:14 +00:00
Evan Cheng
71b2f935db Enable ARM fastcc. 
llvm-svn: 117194
 2010-10-23 02:19:37 +00:00
Evan Cheng
030f55c496 Properly model the latency of register defs which are 1) function returns or 
2) live-outs.

Previously the post-RA schedulers completely ignore these dependencies since
returns, branches, etc. are all scheduling barriers. This patch model the
latencies between instructions being scheduled and the barriers. It also
handle calls by marking their register uses.

llvm-svn: 117193
 2010-10-23 02:10:46 +00:00
Evan Cheng
132906a2d3 Latency between CPSR def and branch is zero. 
llvm-svn: 117192
 2010-10-23 02:04:38 +00:00
Jakob Stoklund Olesen
964f6a6be6 Verify LiveIntervals against the CFG, ensuring that live-in values are live-out 
of all predecessors.

llvm-svn: 117191
 2010-10-23 00:49:09 +00:00
Jim Grosbach
6d65ad0408 Trailing whitespace. 
llvm-svn: 117188
 2010-10-22 23:48:29 +00:00
Andrew Trick
4043309a54 Nonvirtual dtor that was accessible enough to be bad. 
llvm-svn: 117180
 2010-10-22 23:33:19 +00:00
Gabor Greif
6e58dbc9e4 fix memory-layout assumption which only holds on little-endian systems 
llvm-svn: 117176
 2010-10-22 23:16:11 +00:00
Andrew Trick
7a1dadd47d This is a prototype of an experimental register allocation 
framework. It's purpose is not to improve register allocation per se,
but to make it easier to develop powerful live range splitting. I call
it the basic allocator because it is as simple as a global allocator
can be but provides the building blocks for sophisticated register
allocation with live range splitting. 

A minimal implementation is provided that trivially spills whenever it
runs out of registers. I'm checking in now to get high-level design
and style feedback. I've only done minimal testing. The next step is
implementing a "greedy" allocation algorithm that does some register
reassignment and makes better splitting decisions.

llvm-svn: 117174
 2010-10-22 23:09:15 +00:00
Jakob Stoklund Olesen
c78f761faf Add more verification of LiveIntervals. 
llvm-svn: 117170
 2010-10-22 22:48:58 +00:00
Jakob Stoklund Olesen
68258f467a Be more strict about detecting multi-use blocks for isolation. 
When a block has exactly two uses and the register is both live-in and live-out,
don't isolate the block. We would be inserting two copies, so we haven't really
made any progress.

If the live-in and live-out values separate into disconnected components after
splitting, we would be making progress. We can't detect that for now.

llvm-svn: 117169
 2010-10-22 22:48:56 +00:00
Jim Grosbach
bba77cca02 ARM mode encoding information for CLZ, RBIT, REV*, and PKH*. 
llvm-svn: 117165
 2010-10-22 22:12:16 +00:00
Evan Cheng
2c2dcc69d8 Unbreak build. 
llvm-svn: 117155
 2010-10-22 21:49:09 +00:00
Bob Wilson
0290dbe7d4 Teach instcombine to set the alignment arguments for NEON load/store intrinsics. 
llvm-svn: 117154
 2010-10-22 21:41:48 +00:00
Evan Cheng
20b70697bb Transfer implicit ops when forming load multiple and return instructions. 
llvm-svn: 117151
 2010-10-22 21:29:58 +00:00
Jakob Stoklund Olesen
de1439ce2b Be more strict when detecting critical edges before loop splitting. 
An exit block with a critical edge must only have predecessors in the loop, or
just before the loop. This guarantees that the inserted copies in the loop
predecessors dominate the exit block.

llvm-svn: 117144
 2010-10-22 20:28:23 +00:00
Jakob Stoklund Olesen
967bcbf445 Add print methods 
llvm-svn: 117143
 2010-10-22 20:28:21 +00:00
Owen Anderson
424434414e Add correct NEON encodings for vqdmlal. 
llvm-svn: 117134
 2010-10-22 19:35:48 +00:00
Jim Grosbach
10195e9b73 Add the encoding information for the rest of the ARM mode multiply instructions. 
llvm-svn: 117133
 2010-10-22 19:15:30 +00:00
Owen Anderson
2bbdc62e17 Provide correct encodings for NEON vmlal. 
llvm-svn: 117131
 2010-10-22 19:05:25 +00:00
Evan Cheng
e5b7a3a09f Silence compiler warnings. 
llvm-svn: 117128
 2010-10-22 18:57:05 +00:00
Owen Anderson
ada2b33321 Provide correct NEON encodings for vmla. 
llvm-svn: 117126
 2010-10-22 18:54:37 +00:00
Jim Grosbach
ca2897a0ca More ARM multiply instuction binary encodings. 
llvm-svn: 117121
 2010-10-22 18:35:16 +00:00
Evan Cheng
efac5b5f8d Add fastcc cc: pass and return VFP / NEON values in registers. Controlled by -arm-fastcc for now. 
llvm-svn: 117119
 2010-10-22 18:23:05 +00:00
Jim Grosbach
eabb7c5bd1 Parameterize a bit of ARM encoding information, simplifying some instruction 
definitions.

llvm-svn: 117114
 2010-10-22 17:42:06 +00:00
Benjamin Kramer
9e988fe81e Make some symbols static, move classes into anonymous namespaces. 
llvm-svn: 117111
 2010-10-22 17:35:07 +00:00
Jim Grosbach
0ae6bf8095 More ARM multiply instruction encoding information. 
llvm-svn: 117108
 2010-10-22 17:16:17 +00:00
Wesley Peck
488027efa3 Making the e_machine configurable by the target backend in ELFObjectWriter. 
llvm-svn: 117099
 2010-10-22 15:52:49 +00:00
Andrew Trick
b9e8700beb Reverting r117031 to cleanup valgrind errors. 
It doesn't look like anything is wrong with the checkin,
but the new test cases expose a mem bug in AsmParser.

llvm-svn: 117087
 2010-10-22 03:58:29 +00:00
Eric Christopher
58a6e62c08 Add some basic ret instruction support to arm fast-isel. 
llvm-svn: 117085
 2010-10-22 01:28:00 +00:00
Sean Callanan
9a40554de4 Fixed handling of immediate operand sizes, which 
weren't properly reflecting the OperandSize attribute
of the instruction leading to improper decoding of
certain instructions with the 66H prefix.  Also added
a test case for this.

llvm-svn: 117084
 2010-10-22 01:24:11 +00:00
NAKAMURA Takumi
76a048b6e7 Win32/Signals.inc: DontRemoveFileOnSignal(): Please acquire the CriticalSection. 
It choked BugPoint on Mingw.

llvm-svn: 117083
 2010-10-22 01:23:50 +00:00
Jim Grosbach
d86073aa9a ARM binary encoding for some of the multiply instructions. 
llvm-svn: 117080
 2010-10-21 22:52:30 +00:00
Jim Grosbach
7c42142b71 ARM binary encodings for MVN variants. 
llvm-svn: 117076
 2010-10-21 22:19:32 +00:00
Jim Grosbach
e6d61a87e4 Trailing whitespace. 
llvm-svn: 117073
 2010-10-21 22:04:05 +00:00
Jim Grosbach
cb41e97b5c ARM Binary encoding information for BFC/BFI instructions. 
llvm-svn: 117072
 2010-10-21 22:03:21 +00:00
Dan Gohman
fe5489a0ac Add some more documentation. 
llvm-svn: 117070
 2010-10-21 21:55:35 +00:00
Eric Christopher
59683c9d71 These don't need to be virtual. 
llvm-svn: 117068
 2010-10-21 21:47:51 +00:00
Michael J. Spencer
a43c204ef7 Fix Warnings. 
llvm-svn: 117062
 2010-10-21 20:49:38 +00:00
Michael J. Spencer
08602f9803 X86: Base _fltused on the FunctionType of the called value instead of the potentially null "CalledFunction". Thanks Duncan! 
This is needed for indirect calls.

llvm-svn: 117061
 2010-10-21 20:49:23 +00:00
Owen Anderson
f84632744e Move the encoding logic for Q registers into getMachineOpValue(). 
llvm-svn: 117060
 2010-10-21 20:49:13 +00:00
Mikhail Glushenkov
55ada6816e Trailing whitespace. 
llvm-svn: 117058
 2010-10-21 20:40:39 +00:00
Owen Anderson
ba2ac80921 ARM encodes Q registers as 2xregno (i.e. the number of the D register that corresponds to the lower 
half of the Q register), rather than with just regno.  This allows us to unify the encodings for
a lot of different NEON instrucitons that differ only in whether they have Q or D register operands.

llvm-svn: 117056
 2010-10-21 20:21:49 +00:00
Eric Christopher
7ded7e88c8 Handle storing args to the stack for calls. 
llvm-svn: 117055
 2010-10-21 20:09:54 +00:00
Wesley Peck
8a77999240 Adding initial AsmParser implementation for the MBlaze backend. It is 
mostly based on the ARM AsmParser at this time and is not particularly
functional.

Changed the MBlaze data layout from:
    "E-p:32:32-i8:8:8-i16:16:16-i64:32:32-f64:32:32-v64:32:32-v128:32:32-n32"
to:
    "E-p:32:32:32-i8:8:8-i16:16:16"
because the MicroBlaze doesn't have i64, f64, v64, or v128 data types.

Cleaned up the MBlaze source code:
    1. The floating point register class has been removed. The
       MicroBlaze does not have floating point registers. Floating
       point values are simply stored in integer registers.
    2. Renaming the CPURegs register class to GPR to reflect the
       standard naming.
    3. Removing a lot of stale code from AsmPrinter after
       the conversion to InstPrinter.
    4. Simplified sign extended loads by marking them as
       expanded in ISelLowering.

llvm-svn: 117054
 2010-10-21 19:48:38 +00:00
Dan Gohman
6fb125afc8 Explain what "constant" means here. 
llvm-svn: 117053
 2010-10-21 19:45:09 +00:00
Eric Christopher
b15029ea7e More load/store refactoring, call reg+offset simplification from within 
the emitter to handle the addresses. Only simplify the offset if we need
to - also fix bug where in addrmode 5 we weren't dividing the offset by
4, which showed up due to not always lowering.

llvm-svn: 117051
 2010-10-21 19:40:30 +00:00
Jim Grosbach
f35d3b2aa1 trailing whitespace 
llvm-svn: 117050
 2010-10-21 19:38:40 +00:00
Dan Gohman
8cb659e892 Update comments. 
llvm-svn: 117048
 2010-10-21 19:01:22 +00:00
Owen Anderson
51a6bc3b27 Add correct NEON encodings for vhadd and vrhadd. 
llvm-svn: 117047
 2010-10-21 18:55:04 +00:00
Jakob Stoklund Olesen
4794d28044 Don't include the destination interval in the union when computing 
Parent - union(Y, ...). Doh.

llvm-svn: 117042
 2010-10-21 18:47:08 +00:00
Jakob Stoklund Olesen
82da267156 Permit landing pad successor blocks when verifying basic blocks that end in an 
unconditional branch.

llvm-svn: 117041
 2010-10-21 18:47:06 +00:00
Owen Anderson
dce283c7db Add correct encodings for NEON vaddw.s* and vaddw.u*. 
llvm-svn: 117040
 2010-10-21 18:20:25 +00:00
Owen Anderson
7d90c72edf Provide correct NEON encodings for vaddl.u* and vaddl.s*. 
llvm-svn: 117039
 2010-10-21 18:09:17 +00:00
Rafael Espindola
69c973fbfd Do not recurse into symbol refs that have a variant kind. This prevents us 
from losing the variant when producing a relocation on an alias.

llvm-svn: 117037
 2010-10-21 18:00:20 +00:00
Kevin Enderby
c63105a064 More tweaks to X86 instructions to allow the 'w' suffix in places it makes 
sense, when the instruction takes the 16-bit ax register or m16 memory
location.  These changes to llvm-mc matches what the darwin assembler allows
for these instructions.  Also added the missing flex (without the wait prefix)
and ud2a as an alias to ud2 (still to add ud2b).

llvm-svn: 117031
 2010-10-21 17:16:46 +00:00
Duncan Sands
669ddd943a AlignLoc is never used for anything - zap it (gcc-4.6 warning). 
llvm-svn: 117025
 2010-10-21 16:07:10 +00:00
Duncan Sands
b458f1dc85 The return value of this call is not used, so no point 
in assigning it to a variable (gcc-4.6 warning).

llvm-svn: 117024
 2010-10-21 16:06:28 +00:00
Duncan Sands
f7cfeda351 RetOp is not actually used for anything useful (though 
it looks like maybe it was supposed to be used in the
test...), so zap it (gcc-4.6 warning).

llvm-svn: 117023
 2010-10-21 16:05:44 +00:00
Duncan Sands
c40461600a The variable liTRC is not used for anything useful, zap it 
(gcc-4.6 warning).

llvm-svn: 117022
 2010-10-21 16:04:43 +00:00
Duncan Sands
0c166168a0 Remove some variables that are never really used 
(gcc-4.6 warns about these).

llvm-svn: 117021
 2010-10-21 16:03:28 +00:00
Duncan Sands
8c5f243aa0 Add parentheses to pacify gcc, which warns otherwise. 
llvm-svn: 117020
 2010-10-21 16:02:12 +00:00
Duncan Sands
acbc34528c Fix the cleanup process of exception information in JIT. Now JIT 
deregisters registered by it FDE structures allowing consecutive
JIT runs to succeed.  Patch by Yuri.  Fixes PR8285.

llvm-svn: 117004
 2010-10-21 08:57:29 +00:00
Wesley Peck
b100615cc6 Removing stale AsmPrinter directory from MicroBlaze backend. 
llvm-svn: 116998
 2010-10-21 05:05:06 +00:00
Oscar Fuentes
00ad8b9b29 Deleted lib/Target/MBlaze/AsmPrinter/CMakeLists.txt. This way the 
CMake build does not try to build that library, which collides with
MBlaze/InstPrinter.

llvm-svn: 116997
 2010-10-21 05:01:26 +00:00
Wesley Peck
d646a12f25 Recommit 116986 with capitalization typo fixed. 
llvm-svn: 116993
 2010-10-21 03:57:26 +00:00
Andrew Trick
4a3b819c1f putback r116983 and fix simple-fp-encoding.ll tests 
llvm-svn: 116992
 2010-10-21 03:40:16 +00:00
Wesley Peck
3478e641b9 Reverting the commit 116986. It was breaking the build on llvm-x86_64-linux though it 
compiles on OS X. I'll ensure that it builds on a linux machine before committing
again.

llvm-svn: 116991
 2010-10-21 03:34:22 +00:00
Owen Anderson
7da515c665 Revert r116983, which is breaking all the buildbots. 
llvm-svn: 116987
 2010-10-21 03:11:16 +00:00
Wesley Peck
c50372298d Major update of the MicroBlaze backend. The new features are: 
1. A delay slot filler that searches for valid instructions
       to fill the delay slot with. Previously NOPs would always
       be inserted into delay slots.
    2. Support for MC based instruction printer added.
    3. Support for MC based machine code generation and ELF
       file generation. ELF file generation does not yet
       completely work as much of the ELF support infrastructure
       is still x86/x86-64 specific.
    4. General clean up of the MBlaze backend code. Much of the
       tablegen code has been cleanup and simplified.

Bug Fixes:
    1. Removed duplicate periods from subtarget feature descriptions.
    2. Many of the instructions had bad machine code information
       in the tablegen files. Much of this has been fixed.

llvm-svn: 116986
 2010-10-21 03:09:55 +00:00
Michael J. Spencer
5a68d7ce94 X86: Add alloca probing to dynamic alloca on Windows. Fixes PR8424. 
llvm-svn: 116984
 2010-10-21 01:41:01 +00:00
Evan Cheng
0b9eaaf45d Add missing scheduling itineraries for transfers between core registers and VFP registers. 
llvm-svn: 116983
 2010-10-21 01:12:00 +00:00
Owen Anderson
a685f8e90a Implement correct encodings for NEON vadd, both integer and floating point. 
llvm-svn: 116981
 2010-10-21 00:48:00 +00:00
Michael J. Spencer
b9cffadc06 CodeGen-Windows: Only emit _fltused if a VarArg function is called with floating point args. 
This should be the minimum set of functions that could possibly need it.

llvm-svn: 116978
 2010-10-21 00:08:21 +00:00
Eric Christopher
7989939d87 Custom lower f64 args passed in integer registers. 
llvm-svn: 116977
 2010-10-21 00:01:47 +00:00
Michael J. Spencer
54b462089f Fix Whitespace. 
llvm-svn: 116972
 2010-10-20 23:40:27 +00:00
Bill Wendling
c7ef66fcf2 Add encoding for moving a value between two ARM core registers and a doublework 
extension register.

llvm-svn: 116970
 2010-10-20 23:37:40 +00:00
Jakob Stoklund Olesen
03fd8bf61c Remember to keep track of rematted values. 
llvm-svn: 116962
 2010-10-20 22:50:42 +00:00
Bill Wendling
0f96ff63b3 Add encodings for movement between ARM core registers and single-precision 
registers.

llvm-svn: 116961
 2010-10-20 22:44:54 +00:00
Dan Gohman
369ce9c96c Memdep says that an instruction clobbers itself 
when it means there is no specific clobber instruction.

llvm-svn: 116960
 2010-10-20 22:37:41 +00:00
Owen Anderson
9e9ae1b048 Attempt to fix valgrind complaining about (benign) leaks in pass registration by having PassRegistry 
delete PassInfo objects that were created using new-style initialization.

llvm-svn: 116959
 2010-10-20 22:22:30 +00:00
Dan Gohman
3376c4f08d Factor out the main aliasing check into a separate function. 
llvm-svn: 116958
 2010-10-20 22:11:14 +00:00
Evan Cheng
9a06e4c7c8 More accurate estimate / tracking of register pressure. 
- Initial register pressure in the loop should be all the live defs into the
  loop. Not just those from loop preheader which is often empty.
- When an instruction is hoisted, update register pressure from loop preheader
  to the original BB.
- Treat only use of a virtual register as kill since the code is still SSA.

llvm-svn: 116956
 2010-10-20 22:03:58 +00:00
Dale Johannesen
a324c8c6bd Fix crash introduced in 116852. 8573915. 
llvm-svn: 116955
 2010-10-20 22:03:37 +00:00
Dan Gohman
599a664758 Fix comments; the type graph is currently a tree, not a DAG. 
llvm-svn: 116954
 2010-10-20 22:02:58 +00:00
Jakob Stoklund Olesen
9121d7b293 Move some of the InlineSpiller rematerialization code into LiveRangeEdit. 
llvm-svn: 116951
 2010-10-20 22:00:51 +00:00
Dale Johannesen
58fe3193a6 Remove Synthesizable from the Type system; as MMX vector 
types are no longer Legal on X86, we don't need it.
No functional change.  8499854.

llvm-svn: 116947
 2010-10-20 21:32:10 +00:00
Jakob Stoklund Olesen
c04876b607 When SimpleRegisterCoalescing is trimming kill flags on a physical register 
operand, also check if subregisters are killed.

Add <imp-def> operands for subregisters that remain alive after a super register
is killed.

I don't have a testcase for this that reproduces on trunk. <rdar://problem/8441758>

llvm-svn: 116940
 2010-10-20 18:45:55 +00:00
Rafael Espindola
0a50bbaee1 Handle _GLOBAL_OFFSET_TABLE_ correctly. 
llvm-svn: 116932
 2010-10-20 16:46:08 +00:00
Michael J. Spencer
fd40803107 Use C++03... 
llvm-svn: 116927
 2010-10-20 16:00:45 +00:00
Michael J. Spencer
2da558d210 System-Win32/Path: Fix incorrect assumption in isValid. 
A recent commit to clang exposed a bug in the Win32 Path code. This is a
minimal fix for it.

llvm-svn: 116925
 2010-10-20 15:23:58 +00:00
Chandler Carruth
55850cad48 Remove remaining uses of ATTRIBUTE_UNUSED on variables, and delete three 
#includes in the process.

llvm-svn: 116919
 2010-10-20 08:27:02 +00:00
Eric Christopher
78c7e84ce5 Fix a TODO by removing some unnecesary copies. 
llvm-svn: 116915
 2010-10-20 08:02:24 +00:00
NAKAMURA Takumi
0f54a81d63 Add ATTRIBUTE_UNUSED for -Asserts. 
llvm-svn: 116909
 2010-10-20 04:05:29 +00:00
Tobias Grosser
88ce93b0eb Add RegionPass support. 
A RegionPass is executed like a LoopPass but on the regions detected by the
RegionInfo pass instead of the loops detected by the LoopInfo pass.

llvm-svn: 116905
 2010-10-20 01:54:44 +00:00
Douglas Gregor
1e64599cb3 Fix CMake build 
llvm-svn: 116903
 2010-10-20 01:36:56 +00:00
Jim Grosbach
ebb4bc2c05 Fix backwards conditional. 
llvm-svn: 116897
 2010-10-20 01:10:01 +00:00
Dan Gohman
c781a28a1d Make CodeGen TBAA-aware. 
llvm-svn: 116890
 2010-10-20 00:31:05 +00:00
Jim Grosbach
c77e19ac99 Add dynamic realignment when rematerializing the base register. 
llvm-svn: 116886
 2010-10-20 00:02:50 +00:00
Jim Grosbach
5f33ecfc98 Nuke a commented out bit that got missed a while back. 
llvm-svn: 116883
 2010-10-19 23:48:47 +00:00
Jim Grosbach
a8c0be5343 Add a pre-dispatch SjLj EH hook on the unwind edge for targets to do any 
setup they require. Use this for ARM/Darwin to rematerialize the base
pointer from the frame pointer when required. rdar://8564268

llvm-svn: 116879
 2010-10-19 23:27:08 +00:00
Dan Gohman
399ef0b44a Move NoAA out of BasicAliasAnalysis.cpp into its own file, now that 
it doesn't have a special relationship with BasicAliasAnalysis
anymore.

llvm-svn: 116876
 2010-10-19 23:09:08 +00:00
Dan Gohman
befe1767ff Reapply r116831 and r116839, converting AliasAnalysis to use 
uint64_t, plus fixes for places I missed before.

llvm-svn: 116875
 2010-10-19 22:54:46 +00:00
Douglas Gregor
a598c0fbce Extend StringRef's edit-distance algorithm to permit an upper bound on the allowed edit distance 
llvm-svn: 116867
 2010-10-19 22:13:48 +00:00
Jim Grosbach
d7916d7468 Update comments to remove obsolete references. 
llvm-svn: 116863
 2010-10-19 21:34:47 +00:00
Dan Gohman
de3c49438f Revert r116831 and r116839, which are breaking selfhost builds. 
llvm-svn: 116858
 2010-10-19 21:06:16 +00:00
Jakob Stoklund Olesen
02d7f65c49 Shrink MachineOperand from 40 to 32 bytes on 64-bit hosts. 
Pull an unsigned out of the Contents union such that it has the same size as two
pointers and no padding.

Arrange members such that the Contents union and all pointers can be 8-byte
aligned without padding.

This speeds up code generation by 0.8% on a 64-bit host. 32-bit hosts should be
unaffected.

llvm-svn: 116857
 2010-10-19 20:56:32 +00:00
Owen Anderson
deee1e18f1 Passes do not need to recursively initialize passes that they preserve, if 
they do not also require them.  This allows us to reduce inter-pass linkage
dependencies.

llvm-svn: 116854
 2010-10-19 20:08:44 +00:00
Dale Johannesen
ee87cbe4e9 Enable using vdup for vector constants which are splat of 
integers by default, and remove the controlling flag, now
that LICM will hoist such vdup's.  8003375.

llvm-svn: 116852
 2010-10-19 20:00:17 +00:00
Rafael Espindola
5f43aeb079 Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_. 
llvm-svn: 116848
 2010-10-19 19:31:37 +00:00
Evan Cheng
1c8dafd12a Re-enable register pressure aware machine licm with fixes. Hoist() may have 
erased the instruction during LICM so UpdateRegPressureAfter() should not
reference it afterwards.

llvm-svn: 116845
 2010-10-19 18:58:51 +00:00
Dan Gohman
37a9b813f5 Oops, check in all the files for converting AliasAnalysis to 
use uint64_t.

llvm-svn: 116839
 2010-10-19 18:08:27 +00:00
Dan Gohman
03f86df2e5 Change AliasAnalysis and its clients to use uint64_t instead of unsigned 
for representing object sizes, for consistency with other parts of LLVM.

llvm-svn: 116831
 2010-10-19 18:00:02 +00:00
Owen Anderson
46990c17f7 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820
 2010-10-19 17:21:58 +00:00
Daniel Dunbar
6ff550c84d Revert r116781 "- Add a hook for target to determine whether an instruction def 
is", which breaks some nightly tests.

llvm-svn: 116816
 2010-10-19 17:14:24 +00:00
Dan Gohman
6e3755905e Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u. 
llvm-svn: 116815
 2010-10-19 17:06:23 +00:00
Mikhail Glushenkov
0c09a4b97f GlobalOpt: EvaluateFunction() must not evaluate stores to weak_odr globals. 
Fixes PR8389.

llvm-svn: 116812
 2010-10-19 16:47:23 +00:00
Che-Liang Chiou
bc4f00f42d Add lower argument and return of device function 
llvm-svn: 116805
 2010-10-19 13:14:40 +00:00
Bill Wendling
f937f0ed59 Fix spelling. 
llvm-svn: 116804
 2010-10-19 10:18:23 +00:00
Michael J. Spencer
e528f2588f X86: Add MS-CRT libcalls. 
llvm-svn: 116801
 2010-10-19 07:32:52 +00:00
Michael J. Spencer
cd6be63d05 Fix Whitespace. 
llvm-svn: 116800
 2010-10-19 07:32:42 +00:00
NAKAMURA Takumi
4a85646d6c lib/CodeGen/TargetLoweringObjectFileImpl.cpp: Tweak to emit ".{section}${name}" instead of ".{section}$linkonce_{name}" for linkonce sections. 
It seems GNU ld/PECOFF relies on section names, linking with g++'s libstdc++.a would fail.

llvm-svn: 116791
 2010-10-19 03:24:42 +00:00
Andrew Trick
3df2830391 Fix for machine licm assert: RCCost <= RegPressure[RCId] 
in MultiSource/Benchmarks/VersaBench/beamformer/beamformer.
SmallSet.insert returns true if the element is inserted.

llvm-svn: 116790
 2010-10-19 02:50:50 +00:00
Rafael Espindola
2ba55832f3 Fix PR8300 by remembering to keep the bitcast in all cases. 
llvm-svn: 116788
 2010-10-19 02:02:57 +00:00
NAKAMURA Takumi
1c62027520 lib/System/Win32/ThreadLocal.inc: Suppress "unused" warning on -Asserts. 
llvm-svn: 116785
 2010-10-19 01:22:01 +00:00
NAKAMURA Takumi
8c67d3f400 lib/Support/raw_ostream.cpp: Fix Cygwin's build. 
setmode is provided by io.h on Cygwin.

llvm-svn: 116784
 2010-10-19 01:21:55 +00:00
Evan Cheng
9c3f6f486e - Add a hook for target to determine whether an instruction def is 
"long latency" enough to hoist even if it may increase spilling. Reloading
  a value from spill slot is often cheaper than performing an expensive
  computation in the loop. For X86, that means machine LICM will hoist
  SQRT, DIV, etc. ARM will be somewhat aggressive with VFP and NEON
  instructions.
- Enable register pressure aware machine LICM by default.

llvm-svn: 116781
 2010-10-19 00:55:07 +00:00
Chandler Carruth
755dd8000d Move the definition of this to the source file to anchor the vtable. 
llvm-svn: 116779
 2010-10-19 00:37:30 +00:00
Bob Wilson
c3fb4427f4 Support alignment for NEON vld-lane and vst-lane instructions. 
llvm-svn: 116776
 2010-10-19 00:16:32 +00:00
Kevin Enderby
8a3030c6af Added a few tweaks to the Intel Descriptor-table support instructions to allow 
word forms and suffixed versions to match the darwin assembler in 32-bit and
64-bit modes.  This is again for use just with assembly source for llvm-mc .

llvm-svn: 116773
 2010-10-19 00:01:44 +00:00
Jim Grosbach
10fd33ecfc ARM encoding information for [SU]SAT* instructions. 
llvm-svn: 116768
 2010-10-18 23:35:38 +00:00
Dan Gohman
8b332ffb8c Make the representation of AliasSets explicitly differentiate 
between "not known yet" and "known no tbaa info" so that it
can merge them properly.

llvm-svn: 116767
 2010-10-18 23:31:47 +00:00
Eric Christopher
5850afe5f2 Revert r116220 - thus turning arm fast isel back on by default. 
llvm-svn: 116762
 2010-10-18 22:53:53 +00:00
Daniel Dunbar
f5c3546f2b CrashRecoveryContext: Add missing return, so that the signal fires after we our 
routine is off the stack. Otherwise we show up rather confusingly in the stack
trace.

llvm-svn: 116755
 2010-10-18 21:55:18 +00:00
Dan Gohman
6efd04961b Don't pass the raw invalid pointer used to represent conflicting 
TBAA information to AliasAnalysis.

llvm-svn: 116751
 2010-10-18 21:28:00 +00:00
Bill Wendling
3b3d9aaa86 Don't recompute MachineRegisterInfo in the Optimize* method. 
llvm-svn: 116750
 2010-10-18 21:22:31 +00:00
Mikhail Glushenkov
48553997d2 Trailing whitespace. 
llvm-svn: 116749
 2010-10-18 21:16:00 +00:00
Rafael Espindola
9a98116bb7 Implement R_386_GOT32. 
llvm-svn: 116744
 2010-10-18 20:47:21 +00:00
Dan Gohman
64affb7be2 Make AliasSetTracker TBAA-aware, enabling TBAA-enabled LICM. 
llvm-svn: 116743
 2010-10-18 20:44:50 +00:00
Rafael Espindola
c75defe576 Relocate with .bss instead of using the symbol. Matches gas behavior. 
llvm-svn: 116741
 2010-10-18 20:25:33 +00:00
Rafael Espindola
6504490709 Reenable assert. 
llvm-svn: 116738
 2010-10-18 19:33:01 +00:00
Devang Patel
dbe2dbee5b Transfer debug loc to lowered call. 
Patch by Alexander Herz!

llvm-svn: 116733
 2010-10-18 18:53:44 +00:00
Dan Gohman
df5c887e86 Add TypeBasedAliasAnalysis to the standard pass lists. Note that it 
is currently inert by default.

llvm-svn: 116732
 2010-10-18 18:50:27 +00:00
Dan Gohman
35def103f7 Fix BasicAA to pass TBAAInfo through to the chained analysis. 
llvm-svn: 116730
 2010-10-18 18:45:11 +00:00
Jim Grosbach
ffb06eda57 For Thumb2, try to use frame pointer references for stack slots even when a 
base register is available. rdar://8525298

llvm-svn: 116729
 2010-10-18 18:39:46 +00:00
Rafael Espindola
7cc236c87f Produce ELF::R_386_GOTPC relocations. 
llvm-svn: 116728
 2010-10-18 18:36:12 +00:00
Dan Gohman
7820328076 Make TypeBasedAliasAnalysis default to doing nothing, with a command-line 
option to enable it.

llvm-svn: 116722
 2010-10-18 18:17:47 +00:00
Dan Gohman
97f3b0cac1 Use chaining in TypeBasedAliasAnalysis::pointsToConstantMemory. 
llvm-svn: 116721
 2010-10-18 18:10:31 +00:00
Dan Gohman
6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which 
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
 2010-10-18 18:04:47 +00:00
Rafael Espindola
d74116b1e8 Make the bots happy. 
llvm-svn: 116719
 2010-10-18 18:03:28 +00:00
Kevin Enderby
cb18d38b76 Added a handful of x86-32 instructions that were missing so that llvm-mc would 
be more complete.  These are only expected to be used by llvm-mc with assembly
source so there is no pattern, [], in the .td files.  Most are being added to
X86InstrInfo.td as Chris suggested and only comments about register uses are
added.  Suggestions welcome on the .td changes as I'm not sure on every detail
of the x86 records.  More missing instructions will be coming.

llvm-svn: 116716
 2010-10-18 17:04:36 +00:00
Rafael Espindola
bf9107e924 Produce a R_386_PLT32 when needed. Moved the default cases of switches to the 
start for consistency.

llvm-svn: 116715
 2010-10-18 16:58:03 +00:00
Jim Grosbach
3e41568604 ARM addrmode4 instructions (ldm, stm and friends) can't encode an immediate 
offset for stack references. Make sure we take that into account when
deciding whether to reserver an emergency spill slot for the register
scavenger. rdar://8559625

llvm-svn: 116714
 2010-10-18 16:48:59 +00:00
Jim Grosbach
f93e92a4c1 Grammar tweak. 
llvm-svn: 116712
 2010-10-18 16:38:50 +00:00
Rafael Espindola
4a7459403a Handle GOTOFF correctly on i386. 
llvm-svn: 116711
 2010-10-18 16:38:04 +00:00
Jim Grosbach
315bb0cf2b Trivial grammar tweak. 
llvm-svn: 116710
 2010-10-18 16:29:26 +00:00
Kalle Raiskila
3cdfdd9383 Improve lowering of sext to i128 on SPU. 
The old algorithm inserted a 'rotqmbyi' instruction which was
both redundant and wrong - it made shufb select bytes from the
wrong end of the input quad.

llvm-svn: 116701
 2010-10-18 09:34:19 +00:00
Eric Christopher
e453bd6697 Remove the check for invalid calling conventions. Testing shows that they're 
working just fine.

llvm-svn: 116698
 2010-10-18 06:49:12 +00:00
Eric Christopher
6287738105 Lift arg promotion from the X86 backend. This should be unified at some point. 
llvm-svn: 116694
 2010-10-18 02:17:53 +00:00
Eric Christopher
79c2206640 Now that we handle all allocas via a non-SP reg offset remove all of the 
special case handling for ARM::SP.

llvm-svn: 116688
 2010-10-17 11:08:44 +00:00
Benjamin Kramer
9248e59b35 std::string cleanup. 
llvm-svn: 116686
 2010-10-17 07:39:34 +00:00
Benjamin Kramer
e8c2e82a84 Fix a typo and silence unused variable warnings in -Asserts build. 
llvm-svn: 116685
 2010-10-17 07:38:40 +00:00
Eric Christopher
d99f79f92b Allow more load types to be materialized through the allocas. 
llvm-svn: 116683
 2010-10-17 06:07:26 +00:00
Oscar Fuentes
a6ffccab95 Build with RTTI and exceptions disabled. Only in GCC for now. 
llvm-svn: 116682
 2010-10-17 02:26:16 +00:00
Eric Christopher
5fcaab5d0e Optimize GEP off of intermediate allocas. 
llvm-svn: 116681
 2010-10-17 01:51:42 +00:00