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Author SHA1 Message Date
Owen Anderson
0b1a8af290 Use TargetLowering to get the types in fast isel, which handles pointer types correctly for our purposes. 
llvm-svn: 55428
 2008-08-27 18:58:30 +00:00
Dan Gohman
b76e1ca974 Don't check TLI.getOperationAction. The FastISel way is to 
just try to do the action and let the tablegen-generated code
determine if there is target-support for an operation.

llvm-svn: 55427
 2008-08-27 18:15:05 +00:00
Dan Gohman
d5e34d9dce Add a new FastISel method, getRegForValue, which takes care of 
the details of materializing constants and other values into
registers, and make use of it in several places.

llvm-svn: 55426
 2008-08-27 18:10:19 +00:00
Dan Gohman
6174651396 Add a comment about the current floating-point constant code in FastISel. 
llvm-svn: 55425
 2008-08-27 18:01:42 +00:00
Devang Patel
23569e6a1f Fix typos and whitespaces. Other cosmetic changes based on feedback. 
llvm-svn: 55424
 2008-08-27 17:50:18 +00:00
Chris Lattner
551cf02a2d Minor cleanup. 
llvm-svn: 55423
 2008-08-27 17:36:58 +00:00
Dan Gohman
3976cccecd Reinstate the x86-64 portion of r55190. When doing extloads into 
64-bit registers from 16-bit and smaller memory locations, prefer
instructions that define the entire 64-bit register, to avoid
partial-register updates.

llvm-svn: 55422
 2008-08-27 17:33:15 +00:00
Dan Gohman
d9e0302919 Optimize ScheduleDAGRRList's topological sort to use one pass instead 
of two, and to not need a scratch std::vector. Also, compute the ordering
immediately in the result array, instead of in another scratch std::vector
that is copied to the result array.

llvm-svn: 55421
 2008-08-27 16:29:48 +00:00
Dan Gohman
db4286e6f7 Optimize ScheduleDAG's ComputeDepths and ComputeHeights to not need 
a scratch std::vector.

llvm-svn: 55420
 2008-08-27 16:27:25 +00:00
Dan Gohman
5189ab26fb Remove the std::ostream form of PseudoSourceValue's print, 
which isn't needed anymore.

llvm-svn: 55419
 2008-08-27 16:19:44 +00:00
Dan Gohman
378f477a02 Update a comment to reflect recent changes. 
llvm-svn: 55418
 2008-08-27 16:18:22 +00:00
Dan Gohman
47abc17d0f Unbreak PseudoSourceValue::print. This fixes -print-machine-instrs 
and various other things.

llvm-svn: 55415
 2008-08-27 15:24:43 +00:00
Dan Gohman
be3a88eac3 Diagnose uses of unsized types with the byval attribute in the 
verifier. See PR2711 for details.

llvm-svn: 55414
 2008-08-27 14:48:06 +00:00
Dan Gohman
6d6043d2fc Update wording, as aggregates are now first-class. 
llvm-svn: 55413
 2008-08-27 14:44:57 +00:00
Evan Cheng
20b295388f Add DebugInfoBuilder. Patch by Talin! 
llvm-svn: 55409
 2008-08-27 06:51:14 +00:00
Dan Gohman
5e5f1c9e8f Basic FastISel support for floating-point constants. 
llvm-svn: 55401
 2008-08-27 01:09:54 +00:00
Owen Anderson
a0b7e0ab93 Fix handling of inttoptr and ptrtoint when unhandled operands are present. 
llvm-svn: 55400
 2008-08-27 00:35:37 +00:00
Owen Anderson
c5d2fe6354 Add support for fast isel of inttoptr and ptrtoint in the cases where truncation is not needed. 
llvm-svn: 55399
 2008-08-27 00:31:01 +00:00
Owen Anderson
a8911f33f8 Factor out a large amoutn of the cast handling code in fast isel into helper methods. 
This simultaneously makes the code simpler and adds support for sext as well.

llvm-svn: 55398
 2008-08-26 23:46:32 +00:00
Dan Gohman
284f18a884 Add a MachineInstrBuilder method for adding floating-point 
immediate operands.

llvm-svn: 55397
 2008-08-26 23:19:23 +00:00
Owen Anderson
0cee245fdc Add support for fast isel of zext. 
llvm-svn: 55396
 2008-08-26 23:14:49 +00:00
Gabor Greif
4b86114f92 disallow direct access to SDValue::ResNo, provide a getter instead 
llvm-svn: 55394
 2008-08-26 22:36:50 +00:00
Owen Anderson
d33f25d615 Add support for fptosi of constants in fast isel. 
llvm-svn: 55393
 2008-08-26 22:34:28 +00:00
Owen Anderson
14510f8fee Put a heuristic in place to prevent GVN from falling into bad cases with massively complicated CFGs. 
This speeds up a particular testcase from 12+ hours to 5 seconds with little perceptible loss of quality.

llvm-svn: 55391
 2008-08-26 22:07:42 +00:00
Dan Gohman
3e50c6348a Optimize SelectionDAG's topological sort to use one pass instead 
of two, and to not need a scratch std::vector. Also, use the
SelectionDAG's topological sort in LegalizeDAG instead of having
a separate implementation.

llvm-svn: 55389
 2008-08-26 21:42:18 +00:00
Dan Gohman
57b5f9b931 Refactor the bitcast code into its own function. 
llvm-svn: 55387
 2008-08-26 21:28:54 +00:00
Dan Gohman
84d7f86244 Refactor a bunch of FastISelEmitter code into a helper class, and 
put each major step in a separate function. This makes the high
level sequence of events easier to follow.

llvm-svn: 55385
 2008-08-26 21:21:20 +00:00
Dan Gohman
58882d14c4 Make FastISel use the correct argument type when casting GEP indices. 
llvm-svn: 55384
 2008-08-26 20:57:08 +00:00
Dan Gohman
722e912650 Don't select binary instructions with illegal types. 
llvm-svn: 55383
 2008-08-26 20:52:40 +00:00
Owen Anderson
b15e88b671 Add support for fast isel of sitofp, and remove some unnecessary and imprecise legality checks. 
llvm-svn: 55381
 2008-08-26 20:37:00 +00:00
Cedric Venet
62a65ed510 - small bug corrected: incorrect iterator type. 
- fix to please VS: add a return after an assert.

llvm-svn: 55380
 2008-08-26 19:49:04 +00:00
Owen Anderson
821ddf6726 Use a combination of copyRegToReg and ISD::BIT_CONVERT when doing fast isel of bitcasts, 
allowing it to support the full range of conversions people might ask for in a correct manner.

llvm-svn: 55378
 2008-08-26 18:51:24 +00:00
Owen Anderson
fc7b8f3073 These assertions should be return false's instead, allowing the client to detect the failure. 
llvm-svn: 55377
 2008-08-26 18:50:40 +00:00
Owen Anderson
9e2381b77d We need to check that the return type is correct, even in cases where we don't 
have a return type that differs from the operand types.

llvm-svn: 55376
 2008-08-26 18:50:00 +00:00
Owen Anderson
5fef19facf Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested 
was inserted or not.  This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.

llvm-svn: 55375
 2008-08-26 18:03:31 +00:00
Devang Patel
211c05f7a3 If IV is used in a int-to-float cast inside the loop then try to eliminate the cast operation. 
llvm-svn: 55374
 2008-08-26 17:57:54 +00:00
Owen Anderson
76c3c73a7a Add support for fast isel of non-constant fptosi instructions. 
llvm-svn: 55373
 2008-08-26 17:44:42 +00:00
Gabor Greif
ee460cd197 fix doxygen comment 
llvm-svn: 55372
 2008-08-26 17:44:40 +00:00
Ted Kremenek
5f192023b2 Grammar fix. 
llvm-svn: 55371
 2008-08-26 16:41:15 +00:00
Ted Kremenek
909c1c36e2 Added "str()" method to raw_string_ostream. 
str() mirrors the same method in std::ostringstream.
str() flushes the buffered stream contents to string and returns a reference to the string.

llvm-svn: 55370
 2008-08-26 16:34:01 +00:00
Chris Lattner
1804f18b34 code simplification, no functionality change. 
llvm-svn: 55363
 2008-08-26 07:01:28 +00:00
Chris Lattner
006fc6636d stabilize more printing, this doesn't cause a problem 
in the example attached to PR2590, but is a problem in general.

llvm-svn: 55361
 2008-08-26 06:50:46 +00:00
Chris Lattner
6adb1b1b26 stablize SubRegsSet printing, part of PR2590 
llvm-svn: 55360
 2008-08-26 06:49:06 +00:00
Chris Lattner
e589d360a1 Stabilize 'getDwarfRegNumFull' output to not depend on random memory 
orders, part of PR2590

llvm-svn: 55359
 2008-08-26 06:43:25 +00:00
Chris Lattner
c5c00890e5 If an xmm register is referenced explicitly in an inline asm, make sure to 
assign it to a version of the xmm register with the regclass that matches its
type.  This fixes PR2715, a bug handling some crazy xpcom case in mozilla.

llvm-svn: 55358
 2008-08-26 06:19:02 +00:00
Chris Lattner
4367c5c58b typo fix. 
llvm-svn: 55355
 2008-08-26 06:07:47 +00:00
Dan Gohman
815d50b9e6 Actually recycle SDNode allocations. SelectionDAG is using 
RecyclingAllocator, but this change is needed for the nodes
to actually be recycled. This cuts SelectionDAG's memory
usage high-water-mark in half in some cases.

llvm-svn: 55351
 2008-08-26 01:44:34 +00:00
Dan Gohman
5438048f54 Avoid a warning about isTargetNullPtr being unused in release builds. 
llvm-svn: 55350
 2008-08-26 01:38:29 +00:00
Owen Anderson
9c207563a1 Throw the switch to allow FastISel to emit instructions whose return types different from their inputs. Next step: adding lowering pattens in FastISel that actually use these newly available opcodes. 
llvm-svn: 55349
 2008-08-26 01:22:59 +00:00
Evan Cheng
65d29b2553 This is done. 
llvm-svn: 55348
 2008-08-26 01:13:44 +00:00