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24308 Commits

Author SHA1 Message Date
Bill Wendling
d910182ca9 Remove tabs. 
llvm-svn: 54707
 2008-08-12 23:15:44 +00:00
Dale Johannesen
4dc25a234c Make x86-64 JIT changes Darwin-specific. 
llvm-svn: 54700
 2008-08-12 21:02:08 +00:00
Dan Gohman
37da9e9dbd Extend ScalarEvolution's executesAtLeastOnce logic to be able to 
continue past the first conditional branch when looking for a
relevant test. This helps it avoid using MAX expressions in
loop trip counts in more cases.

llvm-svn: 54697
 2008-08-12 20:17:31 +00:00
Jim Grosbach
df52e6897d Whitespace cleanup. Test commit. 
llvm-svn: 54695
 2008-08-12 18:34:45 +00:00
Dale Johannesen
74bf5907fa In the absence of a linker to build the GOT, use the 32-bit 
non_lazy_ptr mechanism on x86-64 Darwin JIT.  Fixes a bunch
of last night's failures.

llvm-svn: 54692
 2008-08-12 18:23:48 +00:00
Dan Gohman
f927e9615f Correct the filename in the top-of-file comment. 
llvm-svn: 54688
 2008-08-12 17:42:33 +00:00
Dan Gohman
74ac3fddee Avoid repeatedly reallocating the FoldingSetNodeID when searching 
through multiple nodes in a bucket.

llvm-svn: 54687
 2008-08-12 17:40:22 +00:00
Devang Patel
d0aabe5ce6 Use SmallVector instead of std::vector 
llvm-svn: 54685
 2008-08-12 15:44:31 +00:00
Devang Patel
670f3a9e03 Use DenseMap to keep track of last users. 
Use inversed map for faster queries.

llvm-svn: 54662
 2008-08-12 00:26:16 +00:00
Dale Johannesen
718fcee02d Some fixes for x86-64 JIT. Make it use small code 
model, except for external calls; this makes
addressing modes PC-relative.  Incomplete.

The assertion at the top of Emitter::runOnMachineFunction
was obviously bogus (always true) so I removed it.
If someone knows what the correct test should be to cover
all the various targets, please fix.

llvm-svn: 54656
 2008-08-11 23:46:25 +00:00
Chris Lattner
0e03352a9f add a helper method to sys::Path for clang, patch by 
Kovarththanan Rajaratnam!

llvm-svn: 54655
 2008-08-11 23:39:47 +00:00
Chris Lattner
ae09ade343 Implement support for simplifying vector comparisons by 0.0 and 1.0 like we 
do for scalars.  Patch contributed by Nicolas Capens

This also generalizes the previous xforms to work on long double, now that 
isExactlyValue works for long double.

llvm-svn: 54653
 2008-08-11 22:06:05 +00:00
Devang Patel
404762f720 Keep track of analysis usage information for passes. Avoid invoking 
getAnalysisUsage() repeatedly.

llvm-svn: 54650
 2008-08-11 21:13:39 +00:00
Dan Gohman
a27ed39f05 Take the FrameOffset into account when computing the alignment 
of stack objects. This fixes PR2656.

llvm-svn: 54646
 2008-08-11 18:27:03 +00:00
Nate Begeman
9be47adde4 Implement ISD::TRAP support on PPC 
llvm-svn: 54644
 2008-08-11 17:36:31 +00:00
Chris Lattner
6e083dfadd move some more stuff out of my email into readme.txt 
llvm-svn: 54603
 2008-08-10 01:14:08 +00:00
Chris Lattner
7673a468dc add a note 
llvm-svn: 54602
 2008-08-10 00:47:21 +00:00
Chris Lattner
89120a8e63 "This patch adds a virtual call to AbstractLatticeFunction to derive a 
type lattice value for an Argument*, giving clients the opportunity to
use something other than Top for it if they choose to."

Patch by John McCall!

llvm-svn: 54589
 2008-08-09 17:23:35 +00:00
Gordon Henriksen
051f7c07a9 Fix some typos. Apparently I think C needs a power-of operator. 
llvm-svn: 54574
 2008-08-09 03:48:46 +00:00
Gordon Henriksen
78a53c516d Delete a redundant binding, LLVMHasInitializer. 
Please use !LLVMIsDeclaration instead.

llvm-svn: 54572
 2008-08-09 02:13:58 +00:00
Gordon Henriksen
b0ee2172b0 Fix the LLVMCreateJITCompiler C binding. 
Evan broke it in r54523 by adding a parameter in the implementation without
updating the header correspondingly.

llvm-svn: 54555
 2008-08-08 20:49:28 +00:00
Eric Christopher
dcd4752642 Have IRBuilder take a template argument on whether or not to preserve 
names. This can save a lot of allocations if you aren't going to be
looking at the output.

llvm-svn: 54546
 2008-08-08 19:39:37 +00:00
Dan Gohman
c3d40ae243 Canonicalize nested AddRecs in by nesting them in order of loop depth. 
llvm-svn: 54545
 2008-08-08 18:33:12 +00:00
Dan Gohman
ac992cdc1c Add an EXTRACTPSmr pattern to match the pattern that 
X86ISelLowering creates.

llvm-svn: 54544
 2008-08-08 18:30:21 +00:00
Anton Korobeynikov
62d8837ed2 Properly print flags on Sparc 
llvm-svn: 54543
 2008-08-08 18:26:10 +00:00
Anton Korobeynikov
14142919d0 Generalize 
llvm-svn: 54542
 2008-08-08 18:25:52 +00:00
Anton Korobeynikov
72fd63636e Use mergeable strings sections on sparc 
llvm-svn: 54541
 2008-08-08 18:25:29 +00:00
Anton Korobeynikov
8d77445753 Handle visibility printing with all generality. Remove bunch of duplicate code. 
llvm-svn: 54540
 2008-08-08 18:25:07 +00:00
Anton Korobeynikov
6a25f6a8fb Use chars, where possible 
llvm-svn: 54539
 2008-08-08 18:24:10 +00:00
Anton Korobeynikov
44f1a1f536 Convert PPC/Linux to new section printing stuff 
llvm-svn: 54538
 2008-08-08 18:23:49 +00:00
Anton Korobeynikov
cad3e8517c Switch PPC/Darwin to new section handling stuff 
llvm-svn: 54537
 2008-08-08 18:23:25 +00:00
Anton Korobeynikov
83610e2072 Cleanup 
llvm-svn: 54536
 2008-08-08 18:22:59 +00:00
Owen Anderson
8eab9e50dc Reduce the entries in a phi before testing it for deadness, because removing the entries might make it dead. 
llvm-svn: 54535
 2008-08-08 18:00:05 +00:00
Evan Cheng
804e157031 Undo most of r54519. 
llvm-svn: 54534
 2008-08-08 17:56:50 +00:00
Chris Lattner
a4e876cf8a Don't call getAnalysisUsage unless -debug-pass is enabled. This speeds 
up the passmgr by avoiding useless work.

llvm-svn: 54528
 2008-08-08 15:14:09 +00:00
Evan Cheng
054bbb0dd8 Add new parameter Fast to createJIT to enable the fast codegen path. 
llvm-svn: 54523
 2008-08-08 08:11:34 +00:00
Evan Cheng
cc7944b919 Add skeleton of simple basic block instruction selector. 
llvm-svn: 54522
 2008-08-08 07:27:28 +00:00
Evan Cheng
4708df4776 It's not legal to output a GV in a coalesced section if it's used in an ARM PIC relative constantpool. 
llvm-svn: 54519
 2008-08-08 06:56:16 +00:00
Evan Cheng
290a9fa171 Fix indentation. 
llvm-svn: 54518
 2008-08-08 06:43:59 +00:00
Nick Lewycky
19a341cf57 Don't crash printing the asm for a ConstantExpr PtrToInt just because the int 
is narrower than the pointer. This testcase emits:

  .byte (((17) - 16) & 255)

llvm-svn: 54517
 2008-08-08 06:34:07 +00:00
Bruno Cardoso Lopes
f8906a40ab Support added for ctlz intrinsic, test case added. 
llvm-svn: 54516
 2008-08-08 06:16:31 +00:00
Chris Lattner
c1ca63307d Speed up the passmgr by avoiding heap thrashing on vectors. 
llvm-svn: 54515
 2008-08-08 05:33:04 +00:00
Bruno Cardoso Lopes
883eb4e6fa Match raw "psp" triple target, as done by the homebrew toolchain. 
llvm-svn: 54514
 2008-08-08 04:49:42 +00:00
Bruno Cardoso Lopes
2eb245ee91 Added Mips support for DYNAMIC_STACKALLOC 
Fixed bug in adjustMipsStackFrame, which was breaking
while trying to access a dead stack object index. Also added
one more alignment before fixing the callee saved registers
stack offset adjustment.

llvm-svn: 54485
 2008-08-07 19:08:11 +00:00
Bruno Cardoso Lopes
2284374fcc Add the remaining fp_round libcalls: 
FPROUND_F80_F32, FPROUND_PPCF128_F32, 
FPROUND_F80_F64, FPROUND_PPCF128_F64

Support for soften float fp_round operands is added, Mips 
needs this to round f64->f32.

Also added support to soften float FABS result, Mips doesn't 
support double fabs results while in 'single float only' mode.

llvm-svn: 54484
 2008-08-07 19:01:24 +00:00
Owen Anderson
1893d0f813 Do a dominator walk when scheduling copies, rather than a DFS on the CFG. Also, fix a few problems when creating 
live intervals for temporaries created by phi elimination.

llvm-svn: 54483
 2008-08-07 18:28:07 +00:00
Matthijs Kooijman
d62ee008d1 Let SRETPromotion properly preserve the function name instead of (implicitly) 
postfixing it with a number.

llvm-svn: 54468
 2008-08-07 16:01:23 +00:00
Matthijs Kooijman
287cca11b3 Fix SRETPromotion, it was generating functions without returns statements since 
r53941 (but this was not noticed due to the lack of a basic test for
SRETPromotion). 

llvm-svn: 54467
 2008-08-07 15:58:09 +00:00
Matthijs Kooijman
9ff5c484cf Add some debug output to SRETPromotion. 
llvm-svn: 54464
 2008-08-07 15:14:04 +00:00
Anton Korobeynikov
212df90ce5 Remove dead forward decl 
llvm-svn: 54461
 2008-08-07 09:55:25 +00:00
Anton Korobeynikov
52d0ff92cc Print section flags ok on platforms, which use '@' as comment string. Fix test. 
llvm-svn: 54460
 2008-08-07 09:55:06 +00:00
Anton Korobeynikov
5fa19dc20a Add assertion for easy debugging of missing stuff 
llvm-svn: 54459
 2008-08-07 09:54:40 +00:00
Anton Korobeynikov
0c8d06f030 Switch ARM to new section handling stuff 
llvm-svn: 54458
 2008-08-07 09:54:23 +00:00
Anton Korobeynikov
b75c98436a Switch Alpha to new section handling stuff 
llvm-svn: 54457
 2008-08-07 09:53:57 +00:00
Anton Korobeynikov
61a8f92b2c Use EmitAlignment consistently 
llvm-svn: 54456
 2008-08-07 09:53:38 +00:00
Anton Korobeynikov
a7b288b4d8 Cleanup 
llvm-svn: 54455
 2008-08-07 09:53:13 +00:00
Anton Korobeynikov
bb99d4b900 Cleanup 
llvm-svn: 54454
 2008-08-07 09:52:54 +00:00
Anton Korobeynikov
2755fabf07 Switch IA64 to new section-handling stuff 
llvm-svn: 54453
 2008-08-07 09:52:35 +00:00
Anton Korobeynikov
9d8232ec1d Cleanup 
llvm-svn: 54452
 2008-08-07 09:52:13 +00:00
Anton Korobeynikov
d3009663dd Provide convenient helpers 
llvm-svn: 54451
 2008-08-07 09:51:54 +00:00
Anton Korobeynikov
912a2a8114 Switch Sparc to new section handling stuff. Refactor printing of module-level GVs significantly. 
llvm-svn: 54450
 2008-08-07 09:51:25 +00:00
Anton Korobeynikov
ebd773939c Add hook for constant pool section selection for darwin. 
llvm-svn: 54449
 2008-08-07 09:51:02 +00:00
Anton Korobeynikov
d37daa2aeb Select section for constant pool entries 
llvm-svn: 54448
 2008-08-07 09:50:34 +00:00
Chris Lattner
863d710738 Don't verify passes when assertions are disabled. 
llvm-svn: 54446
 2008-08-07 07:34:50 +00:00
Dan Gohman
74fa421281 Re-enable elimination of unnecessary SUBREG_TO_REG instructions in 
LowerSubregs, and fix an x86-64 isel bug that this exposed.

SUBREG_TO_REG for x86-64 implicit zero extension is only safe for
isel to generate when the source is known to always have zeros in
the high 32 bits. The EXTRACT_SUBREG instruction does not clear
the high 32 bits.

llvm-svn: 54444
 2008-08-07 02:54:50 +00:00
Dale Johannesen
a4de0fa539 Rewrite JIT handling of GlobalVariables so they 
are allocated in the same buffer as the code,
jump tables, etc.

The default JIT memory manager does not handle buffer
overflow well.  I didn't introduce this and I'm not
attempting to fix it here, but it is more likely to
be hit now since we're putting more stuff in the
buffer.  This affects one test that I know of so far,
MultiSource/Benchmarks/NPB-serial/is.

llvm-svn: 54442
 2008-08-07 01:30:15 +00:00
Evan Cheng
f8a801a9b8 Factor code that finalize PHI nodes, jump tables, etc. out of SelectBasicBlock. No functionality changes. 
llvm-svn: 54438
 2008-08-07 00:43:25 +00:00
Owen Anderson
2975ced4df SDISel's constant branch folding can fold away self-loops, which doesn't result in any dead blocks, but 
rather an incorrect phi input.  Add code to UnreachableMachineBlockElim to get rid of these entries.

llvm-svn: 54432
 2008-08-06 23:16:52 +00:00
Owen Anderson
655eb1a3bc Correct handle cases where two phis are coalesced together, and correct break up the case where two different 
phis want to coalesce with the same vreg.

llvm-svn: 54426
 2008-08-06 22:08:58 +00:00
Owen Anderson
33cf898dff Oops, didn't mean to commit this. 
llvm-svn: 54425
 2008-08-06 20:58:38 +00:00
Owen Anderson
5929d57f67 We don't need to try to coalesce input vregs that are the same as the output vreg. 
llvm-svn: 54422
 2008-08-06 20:29:20 +00:00
Owen Anderson
482d679301 Only trim a live interval if the register is not used after the PHI node. 
llvm-svn: 54421
 2008-08-06 18:36:17 +00:00
Owen Anderson
e95b75bed2 Only remap each VNInfo once when doing renumbering. 
llvm-svn: 54420
 2008-08-06 18:35:45 +00:00
Dan Gohman
cc784f1662 Re-introduce the 8-bit subreg zext-inreg patterns for x86-32, 
this time using MOV32to32_ and MOV16to16_. Thanks to Evan for
suggesting this.

llvm-svn: 54418
 2008-08-06 18:27:21 +00:00
Dan Gohman
4ad77e1ca2 Fix a shufflevector instcombine that was emitting invalid masks indices 
when it meant to be emitting undef indices.

llvm-svn: 54417
 2008-08-06 18:17:32 +00:00
Evan Cheng
c5cc2cb4aa Fix PR2355: bug in ChangeCompareStride. When the loop termination compare is the only use of its iv stride, the stride can be eliminated by moving it to another stride. If the scale is negative, swap the predicate instead of using a inverse predicate. 
llvm-svn: 54415
 2008-08-06 18:04:43 +00:00
Dan Gohman
99d70043f9 xchg does not modify FLAGS. 
llvm-svn: 54411
 2008-08-06 15:52:50 +00:00
Chris Lattner
55b99a6739 optimize a common idiom generated by clang for bitfield access, PR2638. 
llvm-svn: 54408
 2008-08-06 07:35:52 +00:00
Bruno Cardoso Lopes
fa0a8e3e2b Added support for fp callee saved registers. 
Added fp register clobbering during calls.
Added AsmPrinter support for "fmask", a bitmask that indicates where on the 
stack the fp callee saved registers are.

Fixed the stack frame layout for Mips, now the callee saved regs 
are in the right stack location (a little documentation about how this
stack frame must look like is present in MipsRegisterInfo.cpp).
This was done using the method MipsRegisterInfo::adjustMipsStackFrame
To be more clear, these are examples of what is solves :  

1) FP and RA are also callee saved, and despite they aren't in CSI they 
   must be saved before the fp callee saved registers. 
2) The ABI requires that local varibles are allocated before the callee 
   saved register area, the opposite behavior from the default allocation.
3) CPU and FPU saved register area must be aligned independent of each
   other.

llvm-svn: 54403
 2008-08-06 06:14:43 +00:00
Chris Lattner
cae04940bd Zap sitofp/fptoui pairs. In all cases when the sign difference 
matters, the result is undefined anyway.

llvm-svn: 54396
 2008-08-06 05:13:06 +00:00
Nick Lewycky
0bf3c812d2 Reinstate this optimization, but without the miscompile. Thanks to Bill for 
tracking down that this was breaking llvm-gcc bootstrap on Linux.

llvm-svn: 54394
 2008-08-06 04:54:03 +00:00
Dan Gohman
3e389ed424 Use strcpy instead of sprintf here. This avoids a GCC 4.3 format-string 
warning. There wasn't actually a problem here, because the contents of
the string are known.

llvm-svn: 54385
 2008-08-05 23:36:35 +00:00
Dan Gohman
8377e7019f Pass the computed iteration count value to RewriteLoopExitValues 
instead of having it call getIterationCount again.

llvm-svn: 54380
 2008-08-05 22:34:21 +00:00
Owen Anderson
e9c3ae9fe4 Fix breakage on ARM/2008-04-10-ScavengerAssert.ll. 
llvm-svn: 54378
 2008-08-05 22:24:40 +00:00
Evan Cheng
f4d1119fbd Fix PR2620: Fix X86cmppd selection code so it expects operands to be v2f64. 
llvm-svn: 54376
 2008-08-05 22:19:15 +00:00
Evan Cheng
a07795a0c3 Fix PR2596: out of bound reference. 
llvm-svn: 54375
 2008-08-05 21:51:46 +00:00
Owen Anderson
acd5487eb9 Correctly handle replacement and removal of PHIs with one incoming register. 
llvm-svn: 54374
 2008-08-05 21:40:45 +00:00
Bill Wendling
3882f060ef Revert r53282. This was causing a miscompile on Linux. Also, the transformation 
looks bogus. Please see PR2629 for details on why this is breaking things.

llvm-svn: 54372
 2008-08-05 21:23:45 +00:00
Owen Anderson
11731063b9 Oops, we were already checking for dead phis. Handle this the proper way, then. 
llvm-svn: 54371
 2008-08-05 21:18:51 +00:00
Owen Anderson
dacdf44612 We don't need to update live intervals for dead PHIs. 
llvm-svn: 54369
 2008-08-05 20:51:26 +00:00
Owen Anderson
667d9c95c2 Remove the -disable-correct-folding option, which was ugly and is no longer needed. 
llvm-svn: 54361
 2008-08-05 18:27:54 +00:00
Dan Gohman
51a5eb52c5 Fix the AsmWriter to not print extra spaces after parameter attributes. 
llvm-svn: 54351
 2008-08-05 15:51:44 +00:00
Dan Gohman
1238bf634b Trim #includes. 
llvm-svn: 54350
 2008-08-05 15:32:23 +00:00
Dan Gohman
de163bb39d Fix several const-correctness issues, resolving some -Wcast-qual warnings. 
llvm-svn: 54349
 2008-08-05 14:45:15 +00:00
Evan Cheng
1b731b8504 Remove #if 0. 
llvm-svn: 54347
 2008-08-05 07:20:57 +00:00
Evan Cheng
754148a2ec Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing. 
llvm-svn: 54346
 2008-08-05 07:10:38 +00:00
Owen Anderson
7b5fe60440 Remove unneeded iteration. Thanks to Dan for the feedback. 
llvm-svn: 54337
 2008-08-05 00:30:10 +00:00
Owen Anderson
32ae9380f1 This option doesn't need to be a target option. It can be in SDISel instead. 
llvm-svn: 54336
 2008-08-05 00:27:28 +00:00
Owen Anderson
84fbc312d4 - Fix SelectionDAG to generate correct CFGs. 
- Add a basic machine-level dead block eliminator.

These two have to go together, since many other parts of the code generator are unable to handle the unreachable blocks otherwise created.

llvm-svn: 54333
 2008-08-04 23:54:43 +00:00
Eli Friedman
ef366a16a2 PR2621: Improvements to the SCEV AddRec binomial expansion. This 
version uses a new algorithm for evaluating the binomial coefficients 
which is significantly more efficient for AddRecs of more than 2 terms 
(see the comments in the code for details on how the algorithm works).  
It also fixes some bugs: it removes the arbitrary length restriction for 
AddRecs, it fixes the silent generation of incorrect code for AddRecs 
which require a wide calculation width, and it fixes an issue where we 
were incorrectly truncating the iteration count too far when evaluating 
an AddRec expression narrower than the induction variable.

There are still a few related issues I know of: I think there's 
still an issue with the SCEVExpander expansion of AddRec in terms of
the width of the induction variable used.  The hack to avoid generating 
too-wide integers shouldn't be necessary; instead, the callers should be 
considering the cost of the expansion before expanding it (in addition 
to not expanding too-wide integers, we might not want to expand 
expressions that are really expensive, especially when optimizing for 
size; calculating an length-17 32-bit AddRec currently generates about 250 
instructions of straight-line code on X86).  Also, for long 32-bit 
AddRecs on X86, CodeGen really sucks at scheduling the code.  I'm planning on 
filing follow-up PRs for these issues.

llvm-svn: 54332
 2008-08-04 23:49:06 +00:00
Dan Gohman
60ea311ec8 Fix SDISel lowering of PHI nodes to use ComputeValueVTs. 
This allows it to work correctly on aggregate values.
This fixes PR2623.

llvm-svn: 54331
 2008-08-04 23:42:46 +00:00
Dan Gohman
af429b3e52 Fix SDISel lowering of zeroinitializer and undef to use ComputeValueVTs. 
This allows it to work correctly on nested aggregate values.
This fixes PR2625.

llvm-svn: 54330
 2008-08-04 23:30:41 +00:00
Dan Gohman
5d0df78ae0 Add an assert to catch invalid VECTOR_SHUFFLE mask indices. 
llvm-svn: 54329
 2008-08-04 23:09:15 +00:00
Bruno Cardoso Lopes
34f2582096 Mips ISelLowering cleanup : Removed old LowerCALL and FORMAL_ARGS helpers, they 
aren't used anyway, they also used to broke compiling when fastcc was specified for a
function, but not anymore.

llvm-svn: 54316
 2008-08-04 07:12:52 +00:00
Bruno Cardoso Lopes
463f306553 Handle i32->f32 bitconvert results. 
llvm-svn: 54315
 2008-08-04 06:44:31 +00:00
Andrew Lenharth
377c046675 Add atomic sub for other sizes 
llvm-svn: 54314
 2008-08-03 20:17:34 +00:00
Chris Lattner
9aaf1f7650 Emit saveri with the correct operand order, patch by Richard Pennington! 
llvm-svn: 54313
 2008-08-03 18:16:14 +00:00
Bruno Cardoso Lopes
e9f5a77b11 Fix PR2615 
llvm-svn: 54312
 2008-08-03 15:37:43 +00:00
Bruno Cardoso Lopes
b13d663126 Improved asm inline for hi,lo results 
Added hi,lo registers to be used,def implicitly. This provides better handle of
instructions which use hi/lo.
Fixes a small BranchAnalysis bug

llvm-svn: 54274
 2008-08-02 19:42:36 +00:00
Bruno Cardoso Lopes
402c28e400 Apply the same pattern used in 'and' lowering for 'or' 
llvm-svn: 54273
 2008-08-02 19:37:33 +00:00
Duncan Sands
573c01d5da Fix comment typos. 
llvm-svn: 54266
 2008-08-01 12:23:49 +00:00
Bruno Cardoso Lopes
9cb1f636b4 Expand fcopysign 
llvm-svn: 54250
 2008-07-31 18:50:54 +00:00
Bruno Cardoso Lopes
01c39058e8 Handle more SELECT corner cases considering legalize types, probabily wont work with 
the default legalizer.

llvm-svn: 54249
 2008-07-31 18:31:28 +00:00
Dale Johannesen
f669e7c14f Add a flag to disable jump table generation (all 
switches use the binary search algorithm) for
environments that don't support it.  PPC64 JIT
is such an environment; turn the flag on for that.

llvm-svn: 54248
 2008-07-31 18:13:12 +00:00
Dan Gohman
f691fc703d Improve dagcombining for sext-loads and sext-in-reg nodes. 
llvm-svn: 54239
 2008-07-31 00:50:31 +00:00
Bruno Cardoso Lopes
9181910033 Added pattern for floating point zero immediate (avoiding a constant pool 
access).
Added pattern to match bitconvert node.
Fixed MTC1 asm string bug.

llvm-svn: 54229
 2008-07-30 19:00:31 +00:00
Dan Gohman
926a91d664 Move SelectionDAG::viewGraph() out of line; as an inline function 
it isn't always visible to gdb.

llvm-svn: 54228
 2008-07-30 18:48:53 +00:00
Dan Gohman
4ca56a8993 Don't look for leaf values to store when lowering stores of 
empty structs. This fixes PR2612.

llvm-svn: 54226
 2008-07-30 18:36:51 +00:00
Owen Anderson
4e5db8d80f Use existing LiveInterval methods to simplify live interval merging. Thanks to Evan for pointing these out. 
llvm-svn: 54225
 2008-07-30 18:27:35 +00:00
Dan Gohman
efb5d2ce6e Reapply r54147 with a constraint to only use the 8-bit 
subreg form on x86-64, to avoid the problem with x86-32
having GPRs that don't have 8-bit subregs.

Also, change several 16-bit instructions to use 
equivalent 32-bit instructions. These have a smaller
encoding and avoid partial-register updates.

llvm-svn: 54223
 2008-07-30 18:09:17 +00:00
Owen Anderson
e6dca3efcb Value numbers whose def index is a special sentinel value should not be remapped. 
llvm-svn: 54218
 2008-07-30 17:42:47 +00:00
Bruno Cardoso Lopes
df5916fff6 Fixed bug in global address lowering for functions and in Brcond lowering 
llvm-svn: 54215
 2008-07-30 17:06:13 +00:00
Bruno Cardoso Lopes
e130052d1d Removed small section flag for mips, the assembler doesnt support this flag 
llvm-svn: 54214
 2008-07-30 17:04:04 +00:00
Bruno Cardoso Lopes
f2a6400d3e Added new features to represent specific instructions groups 
llvm-svn: 54213
 2008-07-30 17:01:06 +00:00
Bruno Cardoso Lopes
53fdaf7763 Instruction definition cleanup 
llvm-svn: 54212
 2008-07-30 16:58:59 +00:00
Mon P Wang
fb483982f5 Added support for overloading intrinsics (atomics) based on pointers 
to different address spaces.  This alters the naming scheme for those
intrinsics, e.g., atomic.load.add.i32 => atomic.load.add.i32.p0i32

llvm-svn: 54195
 2008-07-30 04:36:53 +00:00
Eli Friedman
a750724150 Another SCEV issue from PR2607; essentially the same issue, but this 
time applying to the implicit comparison in smin expressions. The 
correct way to transform an inequality into the opposite 
inequality, either signed or unsigned, is with a not expression.

I looked through the SCEV code, and I don't think there are any more 
occurrences of this issue.

llvm-svn: 54194
 2008-07-30 04:36:32 +00:00
Owen Anderson
377ad6cb31 More fixes for corner cases when remapping live range indices. 
llvm-svn: 54186
 2008-07-30 00:22:56 +00:00
Owen Anderson
6147af0f8c When merging live intervals, we also need to merge in any live ranges that are inputs to two-address instructions 
that themselves define a range we already care about.

llvm-svn: 54185
 2008-07-30 00:21:16 +00:00
Eli Friedman
81169f2e1b Fix for PR2607: SCEV miscomputing the loop count for loops with an 
SGT exit condition.  Essentially, the correct way to flip an inequality 
in 2's complement is the not operator, not the negation operator.  
That said, the difference only affects cases involving INT_MIN.

Also, enhance the pre-test search logic to be a bit smarter about 
inequalities flipped with a not operator, so it can eliminate the smax 
from the iteration count for simple loops.

llvm-svn: 54184
 2008-07-30 00:04:08 +00:00
Owen Anderson
ab575176fc When merging a PHI operand's live interval into the PHI's live interval, we need to merge over all liveranges in 
the operand's interval that share the relevant value number, not just the range that immediately precedes the PHI.

llvm-svn: 54174
 2008-07-29 21:17:08 +00:00
Owen Anderson
bebb8e5d20 Don't decrement the BB remap when we don't need to. 
llvm-svn: 54173
 2008-07-29 21:15:44 +00:00
Duncan Sands
c3d73fbfc0 Fix PR2609. If a label is deleted, then it needs 
to be marked invalid regardless of whether it is
a debug, an exception handling or (hopefully) a
GC label.

llvm-svn: 54172
 2008-07-29 20:56:02 +00:00
Bruno Cardoso Lopes
2188281cd4 Changed some methods order. 
llvm-svn: 54169
 2008-07-29 19:29:50 +00:00
Nate Begeman
f76a814673 Fix broken CellSPU lowering, re-instate braces in Legalize 
llvm-svn: 54168
 2008-07-29 19:07:27 +00:00
Bruno Cardoso Lopes
9d91fab260 Added floating point lowering for select. 
llvm-svn: 54167
 2008-07-29 19:05:28 +00:00
Nate Begeman
20b060cd54 Disable a fix in the previous patch, since it breaks CellSPU. 
The CellSPU codegen is broken, but needs to be fixed before we can
put this back in.

llvm-svn: 54164
 2008-07-29 18:28:31 +00:00
Nate Begeman
9a71580e21 Add vector shifts to the IR, patch by Eli Friedman. 
CodeGen & Clang work coming next.

llvm-svn: 54161
 2008-07-29 15:49:41 +00:00
Matthijs Kooijman
7199907f50 Add -unroll-allow-partial command line option that enabled the loop unroller to 
partially unroll a loop when fully unrolling would not fit under the threshold.

Patch by Mikael Lepistö.

llvm-svn: 54160
 2008-07-29 13:21:23 +00:00
Matthijs Kooijman
77948dbbc2 Restructure ArgumentPromotion a bit. Instead of just having a single boolean 
that says "unconditional loads from this argument are safe", we now keep track
of the safety per set of indices from which loads happen. This prevents
ArgPromotion from promoting loads that aren't really valid. As an added effect,
this will now disregard the the type of the indices passed to a GEP, so
"load GEP %A, i32 1" and "load GEP %A, i64 1" will result in a single argument,
not two.

This fixes PR2598, for which a testcase has been added as well.

llvm-svn: 54159
 2008-07-29 10:00:13 +00:00
Matthijs Kooijman
6ef5a25c7f Add a GetElementPtrInst::getIndexedType that accepts uint64_t's instead of just Value*'s. 
llvm-svn: 54157
 2008-07-29 08:46:11 +00:00
Evan Cheng
10d4254f45 Fix for PR2578. Do not split off a block whose size is less than FreeRangeHeader::getMinBlockSize(). Patch by Damien. 
llvm-svn: 54152
 2008-07-29 07:38:32 +00:00
Dan Gohman
ebe629a4b2 Revert 54147. 
llvm-svn: 54148
 2008-07-29 01:02:18 +00:00
Dan Gohman
1816900fd1 Add x86 isel patterns to match what would be a ZERO_EXTEND_INREG operation, 
which is represented in codegen as an 'and' operation. This matches them
with movz instructions, instead of leaving them to be matched by and
instructions with an immediate field.

llvm-svn: 54147
 2008-07-28 22:18:25 +00:00
Dan Gohman
9653b21dc2 Fold the useful features of alist and alist_node into ilist, and 
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.

llvm-svn: 54146
 2008-07-28 21:51:04 +00:00
Owen Anderson
d2cc2655af Don't remove volatile loads. Thanks to Duncan for noticing this one. 
llvm-svn: 54144
 2008-07-28 20:52:42 +00:00
Bruno Cardoso Lopes
4223351620 Disable gp_rel relocation for constant pools access for now. 
llvm-svn: 54142
 2008-07-28 19:26:25 +00:00
Duncan Sands
3df25c8758 Since build_vector is a variadic node, the number 
of operands should be -1 not 0.

llvm-svn: 54141
 2008-07-28 19:17:21 +00:00
Bruno Cardoso Lopes
67af9a72f4 Added floating point lowering for setcc and brcond. 
Fixed COMM asm directive usage.
ConstantPool using custom FourByteConstantSection.

llvm-svn: 54139
 2008-07-28 19:11:24 +00:00
Dan Gohman
f6391108c6 Fix a typo in a comment. 
llvm-svn: 54136
 2008-07-28 18:43:51 +00:00