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51d86260ff
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12620 Commits

Author SHA1 Message Date
Evan Cheng
51d86260ff Fix a minor regression from my dag combiner changes. One more place which needs to look pass truncates. 
llvm-svn: 92885
 2010-01-07 00:54:06 +00:00
Jim Grosbach
40aafaec86 80 column violations 
llvm-svn: 92876
 2010-01-06 23:54:42 +00:00
Jakob Stoklund Olesen
a63aa4e54b Add Target hook to duplicate machine instructions. 
Some instructions refer to unique labels, and so cannot be trivially cloned
with CloneMachineInstr.

llvm-svn: 92873
 2010-01-06 23:47:07 +00:00
Jim Grosbach
76768e7216 Addressing mode 6 (load/store) instructions can't encode an immediate offset 
for stack references.

llvm-svn: 92871
 2010-01-06 23:45:18 +00:00
Evan Cheng
25dcf9b830 Teach dag combine to fold the following transformation more aggressively: 
(OP (trunc x), (trunc y)) -> (trunc (OP x, y))

Unfortunately this simple change causes dag combine to infinite looping. The problem is the shrink demanded ops optimization tend to canonicalize expressions in the opposite manner. That is badness. This patch disable those optimizations in dag combine but instead it is done as a late pass in sdisel.

This also exposes some deficiencies in dag combine and x86 setcc / brcond lowering. Teach them to look pass ISD::TRUNCATE in various places.

llvm-svn: 92849
 2010-01-06 19:38:29 +00:00
Duncan Sands
de0adbdf25 Fix a README item: have functionattrs look through selects and 
phi nodes when deciding which pointers point to local memory.
I actually checked long ago how useful this is, and it isn't
very: it hardly ever fires in the testsuite, but since Chris
wants it here it is!

llvm-svn: 92836
 2010-01-06 15:37:47 +00:00
Duncan Sands
4ef1119d94 Partially address a README by having functionattrs consider calls to 
memcpy, memset and other intrinsics that only access their arguments
to be readnone if the intrinsic's arguments all point to local memory.
This improves the testcase in the README to readonly, but it could in
theory be made readnone, however this would involve more sophisticated
analysis that looks through the memcpy.

llvm-svn: 92829
 2010-01-06 08:45:52 +00:00
Dale Johannesen
add9a6d765 Reenable debug info on PPC. Works well enough to 
bootstrap.

llvm-svn: 92818
 2010-01-06 02:21:00 +00:00
Dale Johannesen
225c2cfffe Make sure debug info hook gets called when emitting 
synonyms for PPC.

llvm-svn: 92817
 2010-01-06 02:20:18 +00:00
Johnny Chen
6ae7666885 Undo r92785, it caused test failure. 
llvm-svn: 92796
 2010-01-05 22:37:28 +00:00
Johnny Chen
f15fb27ffd Add Rt2 to the asm format string for 32-bit Thumb load/store register dual 
instructions.  Thumb does not have the restriction that t2 = t+1.

llvm-svn: 92785
 2010-01-05 21:51:46 +00:00
Jakob Stoklund Olesen
8e4cdf70e1 Don't specify CR sub-registers as implicit defs of BL instructions. 
It is enough to give the super registers CR0, CR1, ..., and specifying the
sub-registers as well causes confusion in the liveness computations.

llvm-svn: 92778
 2010-01-05 21:38:37 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Benjamin Kramer
c233521d45 Convert a ton of simple integer type equality tests to the new predicate. 
llvm-svn: 92760
 2010-01-05 20:07:06 +00:00
Evan Cheng
3c99a6f8c3 Code refactoring. 
llvm-svn: 92694
 2010-01-05 06:52:31 +00:00
David Greene
d9586419d7 Change errs() to dbgs(). 
llvm-svn: 92655
 2010-01-05 01:29:36 +00:00
David Greene
d1475983db Change errs() to dbgs(). 
llvm-svn: 92654
 2010-01-05 01:29:34 +00:00
David Greene
05203dccf1 Change errs() to dbgs(). 
llvm-svn: 92653
 2010-01-05 01:29:29 +00:00
David Greene
b5d95aa80e Change errs() to dbgs(). 
llvm-svn: 92651
 2010-01-05 01:29:23 +00:00
David Greene
8a947405d5 Change errs() to dbgs(). 
llvm-svn: 92648
 2010-01-05 01:29:13 +00:00
David Greene
8a6a52d2b8 Change errs() to dbgs(). 
llvm-svn: 92647
 2010-01-05 01:29:08 +00:00
David Greene
13baf4f08a Change errs() to dbgs(). 
llvm-svn: 92644
 2010-01-05 01:28:53 +00:00
Dan Gohman
9bcfdf98f1 Change SelectCode's argument from SDValue to SDNode *, to make it more 
clear what information these functions are actually using.

This is also a micro-optimization, as passing a SDNode * around is
simpler than passing a { SDNode *, int } by value or reference.

llvm-svn: 92564
 2010-01-05 01:24:18 +00:00
Devang Patel
3b08c33f33 Remove dead debug info intrinsics. 
Intrinsic::dbg_stoppoint
 Intrinsic::dbg_region_start 
 Intrinsic::dbg_region_end 
 Intrinsic::dbg_func_start
AutoUpgrade simply ignores these intrinsics now.

llvm-svn: 92557
 2010-01-05 01:10:40 +00:00
Dan Gohman
d3383baab0 Remove the SDNPAssociative properties for the flags-producing 
operators. Eli pointed out that it's not obvious what that
would mean.

llvm-svn: 92555
 2010-01-05 00:44:20 +00:00
Evan Cheng
275a43dadb Perform this folding as a target specific dag combine: 
(or (x << c) | (y >> (64 - c))) ==> (shld64 x, y, c)

The isel patterns may not catch all the cases if general dag combine has reduced width of source operands.

llvm-svn: 92513
 2010-01-04 21:22:48 +00:00
Dan Gohman
f5f090c2c5 Remove some README.txt entries which are now implemented. 
llvm-svn: 92511
 2010-01-04 20:55:05 +00:00
Dan Gohman
5f107150ed A use by operand 1 or 2 of a SELECT is not a FLAGS use. This 
lets the test-elimination work in more conditional-move cases.

llvm-svn: 92508
 2010-01-04 20:52:50 +00:00
Dan Gohman
f87ad693cf Flags-producing add, and, or, etc. have the same profibility 
rules as normal add, and, or, etc.

llvm-svn: 92507
 2010-01-04 20:51:50 +00:00
Dan Gohman
29583f656d Add SDNPCommutative and SDNPAssociative to several X86 target nodes. 
This lets isel fold loads into them in more cases.

llvm-svn: 92506
 2010-01-04 20:51:05 +00:00
Anton Korobeynikov
3915cf5ef4 Fix invalid chain folding for memory variant of sdiv / udiv 
llvm-svn: 92472
 2010-01-04 10:31:54 +00:00
Chris Lattner
ce3f5f3448 implement an instcombine xform needed by clang's codegen 
on the example in PR4216.  This doesn't trigger in the testsuite,
so I'd really appreciate someone scrutinizing the logic for
correctness.

llvm-svn: 92458
 2010-01-04 06:03:59 +00:00
Chris Lattner
44298d184a Teach codegen to lower llvm.powi to an efficient (but not optimal) 
multiply sequence when the power is a constant integer.  Before, our
codegen for std::pow(.., int) always turned into a libcall, which was
really inefficient.

This should also make many gfortran programs happier I'd imagine.

llvm-svn: 92388
 2010-01-01 03:32:16 +00:00
Chris Lattner
0ea2e3d444 update this. To take the next step, llvm.powi should be generalized to work 
on integers as well and codegen should lower them to branch trees.

llvm-svn: 92382
 2010-01-01 01:29:26 +00:00
Benjamin Kramer
1d24aae2db Replace a few more SmallVectors with arrays. 
llvm-svn: 92265
 2009-12-29 16:57:26 +00:00
Sanjiv Gupta
543a6716fb Extern declaration for unordered.f32 libcall was not being emitted. Fixed that. 
llvm-svn: 92242
 2009-12-29 03:24:34 +00:00
Chris Lattner
e70c40e8ac move debug info stuff out of line, allowing two #includes 
to go away from IRBuilder.h

llvm-svn: 92230
 2009-12-28 21:45:40 +00:00
Benjamin Kramer
798349c4d1 Add missing include (for inline PATypeHolder::get). 
llvm-svn: 92222
 2009-12-28 12:27:56 +00:00
Sanjiv Gupta
efad5b2a93 Fixed llc crash for zext (i1 -> i8) loads. 
llvm-svn: 92201
 2009-12-28 04:53:24 +00:00
Sanjiv Gupta
d17915f6f0 Allow targets to specify the return type of libcalls that are generated for floating point comparisons, rather than hard-coding them as i32. 
llvm-svn: 92199
 2009-12-28 02:40:33 +00:00
Bill Wendling
5457c30e95 Mark variable used by 'assert' as 'unused'. 
llvm-svn: 92198
 2009-12-28 02:07:00 +00:00
Bill Wendling
a717566a5c Remove dead variable. 
llvm-svn: 92197
 2009-12-28 02:05:36 +00:00
Bill Wendling
6904b5a782 Remove dead variable. 
llvm-svn: 92196
 2009-12-28 02:04:53 +00:00
Bill Wendling
da542f1b43 Remove dead variable. 
llvm-svn: 92195
 2009-12-28 02:01:06 +00:00
Bill Wendling
4f58b72e9e Remove dead variable. 
llvm-svn: 92194
 2009-12-28 02:00:30 +00:00
Bill Wendling
4e43e78b2e Remove dead variable. 
llvm-svn: 92193
 2009-12-28 01:57:39 +00:00
Bill Wendling
8042a829e5 Remove dead variable. 
llvm-svn: 92186
 2009-12-28 01:42:12 +00:00
Bill Wendling
0eae096c38 Remove dead variable. 
llvm-svn: 92185
 2009-12-28 01:41:12 +00:00
Bill Wendling
b96be04b8a Remove dead variable. 
llvm-svn: 92184
 2009-12-28 01:36:02 +00:00
Bill Wendling
ae29dded44 Remove dead store. The initial value was never used, but always overridden. 
llvm-svn: 92182
 2009-12-28 01:31:11 +00:00