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Author SHA1 Message Date
Dan Gohman
8f4d612996 Revert r55467; it causes regressions in UnitTests/Vector/divides, 
Benchmarks/sim/sim, and others on x86-64.

llvm-svn: 55475
 2008-08-28 17:22:54 +00:00
Rafael Espindola
17b967216a Correctly resize the Parts array. 
llvm-svn: 55471
 2008-08-28 14:24:45 +00:00
Evan Cheng
28b0b18082 If a copy isn't coalesced, but its src is defined by trivial computation. Re-materialize the src to replace the copy. 
llvm-svn: 55467
 2008-08-28 07:53:51 +00:00
Evan Cheng
419506a149 FsFLD0S{S|D} and V_SETALLONES are as cheap as moves. 
llvm-svn: 55466
 2008-08-28 07:52:25 +00:00
Chris Lattner
bd43eec286 Make the verifier reject instructions which have null pointers 
for operands: rdar://6179606.  no testcase, because I can't write
a .ll file that is this broken ;-)

llvm-svn: 55460
 2008-08-28 04:02:44 +00:00
Chris Lattner
460b89cb3a Clear the intervals list in "destroy", patch by 
Prakash Prabhu!

llvm-svn: 55458
 2008-08-28 03:33:03 +00:00
Dale Johannesen
490c016734 Split the ATOMIC NodeType's to include the size, e.g. 
ATOMIC_LOAD_ADD_{8,16,32,64} instead of ATOMIC_LOAD_ADD.
Increased the Hardcoded Constant OpActionsCapacity to match.
Large but boring; no functional change.

This is to support partial-word atomics on ppc; i8 is
not a valid type there, so by the time we get to lowering, the
ATOMIC_LOAD nodes looks the same whether the type was i8 or i32.
The information can be added to the AtomicSDNode, but that is the
largest SDNode; I don't fully understand the SDNode allocation,
but it is sensitive to the largest node size, so increasing
that must be bad.  This is the alternative.

llvm-svn: 55457
 2008-08-28 02:44:49 +00:00
Dale Johannesen
ae522b8463 This test crashes on non-x86 host; make SSE explicit. 
Feel free to fix a better way!

llvm-svn: 55456
 2008-08-28 01:51:09 +00:00
Dan Gohman
e60a9d002f Fix a missing #include. Patch by Andrew John Hughes. 
llvm-svn: 55451
 2008-08-28 00:20:07 +00:00
Dan Gohman
3a89011a01 Reorganize the lifetimes of the major objects SelectionDAGISel 
works with.

SelectionDAG, FunctionLoweringInfo, and SelectionDAGLowering
objects now get created once per SelectionDAGISel instance, and
can be reused across blocks and across functions. Previously,
they were created and destroyed each time they were needed.

This reorganization simplifies the handling of PHI nodes, and
also SwitchCases, JumpTables, and BitTestBlocks. This
simplification has the side effect of fixing a bug in FastISel
where successor PHI nodes weren't being updated correctly.

This is also a step towards making the transition from FastISel
into and out of SelectionDAG faster, and also making
plain SelectionDAG faster on code with lots of little blocks.

llvm-svn: 55450
 2008-08-27 23:52:12 +00:00
Owen Anderson
bb32ae5803 Add a helper method that will be used to support EXTRACT_SUBREG for selecting trunc's in fast-isel. 
llvm-svn: 55439
 2008-08-27 22:30:02 +00:00
Bill Wendling
0b5b31a0be Make "movdq2q" and "movq2dq" dependent upon having SSE2 because they use the 
SSE2 registers as well as the MMX registers.

llvm-svn: 55436
 2008-08-27 21:32:04 +00:00
Bill Wendling
84547c2a09 Put file scoped constants in an anonymous namespace. Use the "using namespace 
llvm" for consistency.

llvm-svn: 55435
 2008-08-27 21:10:13 +00:00
Evan Cheng
cf2cb4da82 Move the check whether it's worth remating to caller. 
llvm-svn: 55434
 2008-08-27 20:58:54 +00:00
Devang Patel
7abe1944ae Do not apply the transformation if the target does not support DestTy natively. 
llvm-svn: 55433
 2008-08-27 20:55:23 +00:00
Devang Patel
c4040a69b7 Backout 55429 
llvm-svn: 55432
 2008-08-27 20:51:49 +00:00
Dan Gohman
9e928e0b1f Fix FastISel's bitcast code for the case where getRegForValue fails. 
llvm-svn: 55431
 2008-08-27 20:41:38 +00:00
Evan Cheng
dc202f4bba Refactor isSafeToReMat out of 2addr pass. 
llvm-svn: 55430
 2008-08-27 20:33:50 +00:00
Devang Patel
369cc38542 Add facility to create a target. 
llvm-svn: 55429
 2008-08-27 20:00:27 +00:00
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