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Commit Graph

45593 Commits

Author SHA1 Message Date
Dan Gohman
db646bfdad Delete the SimplifyHalfPowrLibCalls pass, which was unused, and
only existed as the result of a misunderstanding.

llvm-svn: 126669
2011-02-28 19:41:14 +00:00
Dan Gohman
1ee6941aca Delete the LiveValues pass. I won't get get back to the project it
was started for in the foreseeable future.

llvm-svn: 126668
2011-02-28 19:37:59 +00:00
David Greene
3bc73b0ae9 [AVX] Add decode support for VUNPCKLPS/D instructions, both 128-bit
and 256-bit forms.  Because the number of elements in a vector
      does not determine the vector type (4 elements could be v4f32 or
      v4f64), pass the full type of the vector to decode routines.

llvm-svn: 126664
2011-02-28 19:06:56 +00:00
Kevin Enderby
a1c2ea4ba0 Fix the arm's disassembler for blx that was building an MCInst without the
needed two predicate operands before the imm operand.

llvm-svn: 126662
2011-02-28 18:46:31 +00:00
Evan Cheng
4e6d375744 Fix a typo which cause dag combine crash. rdar://9059537.
llvm-svn: 126661
2011-02-28 18:45:27 +00:00
Stuart Hastings
539d4e1460 Support for byval parameters on ARM. Will be enabled by a forthcoming
patch to the front-end.  Radar 7662569.

llvm-svn: 126655
2011-02-28 17:17:53 +00:00
Kalle Raiskila
cc5b703c81 Add branch hinting for SPU.
The implemented algorithm is overly simplistic (just speculate all branches are
taken)- this is work in progress.

llvm-svn: 126651
2011-02-28 14:08:24 +00:00
Frits van Bommel
4a2b658705 Teach SimplifyCFG that (switch (select cond, X, Y)) is better expressed as a branch.
Based on a patch by Alistair Lynn.

llvm-svn: 126647
2011-02-28 09:44:07 +00:00
Nick Lewycky
fe02856d37 Fix comment.
llvm-svn: 126645
2011-02-28 09:18:11 +00:00
Nick Lewycky
dcc97b5f44 srem doesn't actually have the same resulting sign as its numerator, you could
also have a zero when numerator = denominator. Reverts parts of r126635 and
r126637.

llvm-svn: 126644
2011-02-28 09:17:39 +00:00
Nick Lewycky
28f01da48e Teach InstCombine to fold "(shr exact X, Y) == 0" --> X == 0, fixing #1 from
PR9343.

llvm-svn: 126643
2011-02-28 08:31:40 +00:00
Nick Lewycky
dd5df7ef0a Teach value tracking to make use of flags in more situations.
llvm-svn: 126642
2011-02-28 08:02:21 +00:00
Nick Lewycky
aa03b76c53 Teach ValueTracking to look at the dividend when determining the sign bit of an
srem instruction.

llvm-svn: 126637
2011-02-28 06:52:12 +00:00
Che-Liang Chiou
4026d01040 Add preliminary support for .f32 in the PTX backend.
- Add appropriate TableGen patterns for fadd, fsub, fmul.
- Add .f32 as the PTX type for the LLVM float type.
- Allow parameters, return values, and global variable declarations
  to accept the float type.
- Add appropriate test cases.

Patch by Justin Holewinski

llvm-svn: 126636
2011-02-28 06:34:09 +00:00
Nick Lewycky
e0f44d0aba The sign of an srem instruction is the sign of its dividend (the first
argument), regardless of the divisor. Teach instcombine about this and fix
test7 in PR9343!

llvm-svn: 126635
2011-02-28 06:20:05 +00:00
Benjamin Kramer
0bdf517525 Silence enum conversion warnings.
llvm-svn: 126578
2011-02-27 18:13:53 +00:00
Duncan Sands
b6f7dcb996 Legalize support for fpextend of vector. PR9309.
llvm-svn: 126574
2011-02-27 14:41:27 +00:00
NAKAMURA Takumi
b35d45a714 Target/X86: Always emit "push/pop GPRs" in prologue/epilogue and emit "spill/reload frames" for XMMs.
It improves Win64's prologue/epilogue but it would not affect ia32 and amd64 (lack of nonvolatile XMMs).

llvm-svn: 126568
2011-02-27 08:47:19 +00:00
Nadav Rotem
961627db07 Fix typos in the comments.
llvm-svn: 126565
2011-02-27 07:40:43 +00:00
Tobias Grosser
a9cc8bda71 RegionPrinter: Ignore back edges when layouting the graph
llvm-svn: 126564
2011-02-27 04:11:07 +00:00
Tobias Grosser
789fab6b30 Pass the graph to the DOTGraphTraits.getEdgeAttributes().
This follows the interface of getNodeAttributes.

llvm-svn: 126562
2011-02-27 04:11:03 +00:00
Daniel Dunbar
d4a7704765 Support: Add llvm::AreStatisticsEnabled().
llvm-svn: 126558
2011-02-26 23:17:12 +00:00
Benjamin Kramer
412ffed4f0 Add some DAGCombines for (adde 0, 0, glue), which are useful to optimize legalized code for large integer arithmetic.
1. Inform users of ADDEs with two 0 operands that it never sets carry
2. Fold other ADDs or ADDCs into the ADDE if possible

It would be neat if we could do the same thing for SETCC+ADD eventually, but we can't do that in target independent code.

llvm-svn: 126557
2011-02-26 22:48:07 +00:00
Jim Grosbach
d3d3996a4a Trailing whitespace.
llvm-svn: 126526
2011-02-25 22:53:20 +00:00
Owen Anderson
bd26993873 Allow targets to specify a the type of the RHS of a shift parameterized on the type of the LHS.
llvm-svn: 126518
2011-02-25 21:41:48 +00:00
Cameron Zwarich
974208a607 Roll out r126425 and r126450 to see if it fixes the failures on the buildbots.
llvm-svn: 126488
2011-02-25 16:30:32 +00:00
Benjamin Kramer
39a5d8596c Revert "SimplifyCFG: GEPs with just one non-constant index are also cheap."
Yes, there are other types than i8* and GEPs on them can produce an add+multiply.
We don't consider that cheap enough to be speculatively executed.

llvm-svn: 126481
2011-02-25 10:33:33 +00:00
Bob Wilson
6bbffe19e9 Add patterns to use post-increment addressing for Neon VST1-lane instructions.
llvm-svn: 126477
2011-02-25 06:42:42 +00:00
Jim Grosbach
61c746f927 Fix formatting of debug helper string.
llvm-svn: 126471
2011-02-25 03:59:03 +00:00
Evan Cheng
56354c17d9 Fix typo.
llvm-svn: 126467
2011-02-25 01:29:29 +00:00
Cameron Zwarich
1a975ff395 Set NumSignBits to 1 if KnownZero/KnownOne are being zero extended. In theory it
is possible to do better if the high bit is set in either KnownZero/KnownOne, but
in practice NumSignBits is always 1 when we are zero extending because nothing
is known about that register.

llvm-svn: 126465
2011-02-25 01:11:01 +00:00
Cameron Zwarich
aa61fbeebb We only want to zero extend the existing information if the bit width is
actually larger.

llvm-svn: 126464
2011-02-25 01:10:55 +00:00
Jakob Stoklund Olesen
9d328484ce Try harder to get the hint by preferring to evict hint interference.
llvm-svn: 126463
2011-02-25 01:04:22 +00:00
Evan Cheng
fbdcea4b2e Each prologue may have multiple vpush instructions to store callee-saved
D registers since the vpush list may not have gaps. Make sure the stack
adjustment instruction isn't moved between them. Ditto for vpop in
epilogues.

Sorry, can't reduce a small test case.
rdar://9043312

llvm-svn: 126457
2011-02-25 00:24:46 +00:00
Benjamin Kramer
44b43a85db SimplifyCFG: GEPs with just one non-constant index are also cheap.
llvm-svn: 126452
2011-02-24 23:26:09 +00:00
Jakob Stoklund Olesen
4790d4c74b Tweak the register allocator priority queue some more.
New live ranges are assigned in long -> short order, but live ranges that have
been evicted at least once are deferred and assigned in short -> long order.

Also disable splitting and spilling for live ranges seen for the first time.

The intention is to create a realistic interference pattern from the heavy live
ranges before starting splitting and spilling around it.

llvm-svn: 126451
2011-02-24 23:21:36 +00:00
Nick Lewycky
35539486f0 Remove dead variable.
llvm-svn: 126450
2011-02-24 23:15:43 +00:00
Benjamin Kramer
b5996b08b7 SimplifyCFG: GEPs with constant indices are cheap enough to be executed unconditionally.
llvm-svn: 126445
2011-02-24 22:46:11 +00:00
Joerg Sonnenberger
9c30c492df Restore r125595 (reverted in r126336) with modifications:
Introduce a variable in the AsmParserExtension whether [] is valid in an
expression. If it is true, parse them like (). Enable this for ELF only.

llvm-svn: 126443
2011-02-24 21:59:22 +00:00
Chris Lattner
55119c81aa remove command line option debugging hook.
llvm-svn: 126441
2011-02-24 21:53:03 +00:00
Devang Patel
f2b2417c2c Enable DebugInfo support for COFF object files.
Patch by Nathan Jeffords!

llvm-svn: 126425
2011-02-24 21:04:00 +00:00
Nadav Rotem
ab7cf630f4 Enable support for vector sext and trunc:
Limit the folding of any_ext and sext  into the load operation to scalars.
Limit the active-bits trunc optimization to scalars.
Document vector trunc and vector sext in LangRef.

Similar to commit 126080 (for enabling zext).

llvm-svn: 126424
2011-02-24 21:01:34 +00:00
Rafael Espindola
3a1fd70006 Fix llvm-gcc bootstrap with gnu ld.
The problem was codegen guessing the wrong values and printing

	.section	.eh_frame,"aMS",@progbits,4

It is not clear at all if Codegen should try to guess, MC is the
one that should know the default flags.

llvm-svn: 126421
2011-02-24 20:18:01 +00:00
Devang Patel
29b946c0bd Do not use DIFactory. Use DIBuilder.
llvm-svn: 126398
2011-02-24 18:49:55 +00:00
Devang Patel
e0f113c206 Do not use DIFactory.
llvm-svn: 126397
2011-02-24 18:49:30 +00:00
Richard Osborne
a8df984a31 Add XCore intrinsic for eeu instruction.
llvm-svn: 126384
2011-02-24 13:39:18 +00:00
Benjamin Kramer
feccb33180 Plug some leaks in edis.
- Don't leak parsed operands during tokenization.
- Don't leak printed insts in llvm-mc.

llvm-svn: 126381
2011-02-24 11:03:19 +00:00
Cameron Zwarich
724eb8706a Merge information about the number of zero, one, and sign bits of live-out
registers at phis. This enables us to eliminate a lot of pointless zexts during
the DAGCombine phase. This fixes <rdar://problem/8760114>.

llvm-svn: 126380
2011-02-24 10:00:25 +00:00
Cameron Zwarich
af4779907f Add a getNumSignBits() method to APInt.
llvm-svn: 126379
2011-02-24 10:00:20 +00:00
Cameron Zwarich
e79a75febe Add a mechanism for invalidating the LiveOutInfo of a PHI, and use it whenever
a block is visited before all of its predecessors.

llvm-svn: 126378
2011-02-24 10:00:16 +00:00