Commit Graph

37770 Commits

Author SHA1 Message Date
Chris Lattner db26db2158 Switch sparc from using LowerCallTo to using LowerOperation(CALL) like
other targets.  Use autogenerated calling conv to lower result of
calls.

llvm-svn: 48444
2008-03-17 06:01:07 +00:00
Chris Lattner 49b269d780 Start moving sparc to use SparcCallingConv.td, switching over
return lowering first.  This fixes a bug where the top and bottom
of i64 values were returned in the wrong registers before.

llvm-svn: 48443
2008-03-17 05:41:48 +00:00
Chris Lattner 0a1762e374 split sparc lowering out into SparcISelLowering.{cpp|h} to follow
best practices.

llvm-svn: 48442
2008-03-17 03:21:36 +00:00
Chris Lattner 5c5597a572 refactor the LowerOperation code out to individual functions for
each lowering, which is 'best practice'.

llvm-svn: 48441
2008-03-17 02:52:07 +00:00
Dale Johannesen 92dcf1e0c2 Next round of PPC32 ABI changes. Allow for gcc
behavior where a callee thinks a param will be
present in memory, even though the ABI doc says
it doesn't have to be.  Handle complex long long
and complex double (4 and 8 return regs).

llvm-svn: 48439
2008-03-17 02:13:43 +00:00
Chris Lattner af8d3c6699 various rotate fun.
llvm-svn: 48438
2008-03-17 01:47:51 +00:00
Chris Lattner 3b79fdcae5 ensure we continue matching x86-64 rotates.
llvm-svn: 48437
2008-03-17 01:35:03 +00:00
Nate Begeman 39afeaf834 __builtin_ia32_movntdqa reads memory
llvm-svn: 48431
2008-03-16 21:15:47 +00:00
Nate Begeman 9030ecec88 Add a couple missing SSE4 instructions
llvm-svn: 48430
2008-03-16 21:14:46 +00:00
Gordon Henriksen ab4b7d36cd C and Objective Caml bindings for the TargetData class.
llvm-svn: 48422
2008-03-16 20:08:03 +00:00
Bill Wendling 9a11a0174f Add assert for non-hexadecimal radixes.
llvm-svn: 48421
2008-03-16 20:05:52 +00:00
Gordon Henriksen d0cc8dbd4d Housekeeping.
llvm-svn: 48420
2008-03-16 16:33:35 +00:00
Gordon Henriksen 82a0e74f43 C and Objective Caml bindings for several scalar transforms.
Patch originally by Erick Tryzelaar, but has been modified somewhat.

llvm-svn: 48419
2008-03-16 16:32:40 +00:00
Gordon Henriksen 9657149875 Remove unnecessary includes.
llvm-svn: 48418
2008-03-16 15:55:43 +00:00
Nick Lewycky ec6f1669d3 All of these tests had out of date syntax and were never even running through
llvm-upgrade because nobody noticed them failing.

Update to use new syntax and actually check for the right failure by looking at
the error message.

llvm-svn: 48417
2008-03-16 07:55:46 +00:00
Nick Lewycky 942035d8b3 Functions are allowed to return structures. (Note that this test never failed.)
llvm-svn: 48416
2008-03-16 07:49:49 +00:00
Nick Lewycky 227c7a290b Regressions/ is long gone.
llvm-svn: 48415
2008-03-16 07:31:23 +00:00
Nick Lewycky 084ab471fe Commit works on regular functions too. Fix the syntax to allow @foo.
llvm-svn: 48414
2008-03-16 07:18:12 +00:00
Gordon Henriksen 878114bf16 C and Objective Caml bindings for PassManagers.
llvm-svn: 48413
2008-03-16 04:20:44 +00:00
Christopher Lamb d3d0ad3f58 Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.
llvm-svn: 48412
2008-03-16 03:12:01 +00:00
Gordon Henriksen c1338d430a Minor documentation fix.
Patch by Erick Tryzelaar.

llvm-svn: 48382
2008-03-15 00:26:23 +00:00
Evan Cheng ec7533b620 Remove isImplicitDef TargetInstrDesc flag.
llvm-svn: 48381
2008-03-15 00:19:36 +00:00
Evan Cheng 0e7b00d79f Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF.
llvm-svn: 48380
2008-03-15 00:03:38 +00:00
Gordon Henriksen 6c6075e326 Expose Module::dump via C and Ocaml.
Patch by Erick Tryzelaar.

llvm-svn: 48379
2008-03-14 23:58:56 +00:00
Gordon Henriksen c63aaeadd2 Expose Module::dump via C and Ocaml.
Patch by Erick Tryzelaar.

llvm-svn: 48378
2008-03-14 23:52:53 +00:00
Gabor Greif 0269b82fd9 move the Use destructor where it belongs to
llvm-svn: 48376
2008-03-14 22:03:02 +00:00
Evan Cheng 31715f1a83 Back out r48353. Not needed.
llvm-svn: 48375
2008-03-14 22:01:01 +00:00
Duncan Sands 858e6385f7 Do not generate special entries in the dwarf eh
table for nounwind calls.

llvm-svn: 48373
2008-03-14 21:36:24 +00:00
Chris Lattner 2daab52500 Restore this member, which is used on win32.
llvm-svn: 48372
2008-03-14 21:17:54 +00:00
Evan Cheng 84aec09fdb Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators.
llvm-svn: 48371
2008-03-14 20:44:01 +00:00
Chris Lattner bb8c2406dc this was removed from the Unix side.
llvm-svn: 48370
2008-03-14 20:41:50 +00:00
Dan Gohman 94f57c56f9 Update comments; getPassName no longer uses RTTI.
llvm-svn: 48369
2008-03-14 18:27:04 +00:00
Dan Gohman 87ea2aba62 Move the PMStack class out of Pass.h and into PassManagers.h.
llvm-svn: 48367
2008-03-14 18:14:29 +00:00
Dale Johannesen 0dfd3f33f7 Implement the real calling convention for ppc32 Altivec:
vectors go at the end of the memory area, after all
non-vector parameters.

llvm-svn: 48364
2008-03-14 17:41:26 +00:00
Evan Cheng 5be52a6053 Fix some 80 col violations.
llvm-svn: 48361
2008-03-14 07:46:48 +00:00
Evan Cheng 96bdbd6c5d Fix a number of encoding bugs. SSE 4.1 instructions MPSADBWrri, PINSRDrr, etc. have 8-bits immediate field (ImmT == Imm8).
llvm-svn: 48360
2008-03-14 07:39:27 +00:00
Evan Cheng 77c8da7f00 Add debugging stuff.
llvm-svn: 48359
2008-03-14 07:13:42 +00:00
Chris Lattner 477d0f5294 Add an issue that is preventing instcombine from doing a simplification.
llvm-svn: 48356
2008-03-14 06:00:19 +00:00
Duncan Sands a06e4f3050 Simplify using getIntPtrConstant.
llvm-svn: 48355
2008-03-14 05:23:57 +00:00
Bill Wendling 68a930b33e The inst combining of inttoptr into GEP with one index was using the bit size of
the type instead of the byte size. This was causing troublesome mis-compilations.

True to form, this took 2 days to find and is a one-line fix. :-P

llvm-svn: 48354
2008-03-14 05:12:19 +00:00
Evan Cheng 3108798ecb Add an MO_Undef MachineOperandType, intended for INSERT_SUBREG. Next up MO_Undead.
llvm-svn: 48353
2008-03-14 01:47:49 +00:00
Nate Begeman 63eb03f800 Tabs -> spaces
Use getIntPtrConstant in a couple places to shorten stuff up
Handle splitting vector shuffles with undefs in the mask

llvm-svn: 48351
2008-03-14 00:53:31 +00:00
Evan Cheng 05d41356d0 Forgot this.
llvm-svn: 48349
2008-03-14 00:17:29 +00:00
Evan Cheng db443ca377 Livein copy scheduling fixes: do not coalesce physical register copies, correctly determine the safe location to insert the copies.
llvm-svn: 48348
2008-03-14 00:14:55 +00:00
Dan Gohman eac0c96371 Use SDTNone instead of duplicating it.
llvm-svn: 48346
2008-03-13 23:07:40 +00:00
Dan Gohman 7350880641 Fix a typo in a comment.
llvm-svn: 48345
2008-03-13 23:04:27 +00:00
Dan Gohman b72127ac4c More APInt-ification.
llvm-svn: 48344
2008-03-13 22:13:53 +00:00
Owen Anderson 7a69e3aef3 Fix a bug in GVN that Duncan noticed, where we potentially need to insert a
pointer bitcast when performing return slot optimization.

llvm-svn: 48343
2008-03-13 22:07:10 +00:00
Tanya Lattner c21cfe37ec Fix error in testing for END. notation.
Patch by Julien Lerouge. Thanks!

llvm-svn: 48342
2008-03-13 22:02:51 +00:00
Evan Cheng e21a68bca7 Undo tweak. It had no obvious benefit.
llvm-svn: 48341
2008-03-13 17:42:48 +00:00
Devang Patel af305d2342 Remove unused GetAddressOfSymbol()
Thanks Daniel Dunbar!

llvm-svn: 48340
2008-03-13 16:55:34 +00:00
Evan Cheng 442d708bfb New test case.
llvm-svn: 48338
2008-03-13 08:05:02 +00:00
Evan Cheng 57bb088542 Typo.
llvm-svn: 48337
2008-03-13 08:04:35 +00:00
Evan Cheng 8f8a8b28e9 Don't try to sink 3-address instruction if convertToThreeAddress created more than one instructions.
llvm-svn: 48336
2008-03-13 07:56:58 +00:00
Evan Cheng ecde45ecb5 A test case I forgot to check in.
llvm-svn: 48335
2008-03-13 06:42:46 +00:00
Evan Cheng 21449c76bc Remove an unused command line option.
llvm-svn: 48334
2008-03-13 06:38:28 +00:00
Evan Cheng 5c26bde55e TwoAddressInstructionPass enhancement. After it converts a two address instruction into a 3-address one, sink it past the instruction that kills the read-mod-write register if its definition is used past the kill. This reduces the number of live register by one.
llvm-svn: 48333
2008-03-13 06:37:55 +00:00
Christopher Lamb dd55d3f1b2 Get rid of a pseudo instruction and replace it with subreg based operation on real instructions, ridding the asm printers of the hack used to do this previously. In the process, update LowerSubregs to be careful about eliminating copies that have side affects.
Note: the coalescer will have to be careful about this too, when it starts coalescing insert_subreg nodes.
llvm-svn: 48329
2008-03-13 05:47:01 +00:00
Chris Lattner 02e727ff88 Fix Path::GetMainExecutable on cygwin, patch by Sam Bishop.
llvm-svn: 48328
2008-03-13 05:22:05 +00:00
Chris Lattner 4dec91222a remove extraneous namespace qualifier, PR2142
llvm-svn: 48327
2008-03-13 05:17:59 +00:00
Chris Lattner c994c0295a move a bunch of trivial methods to be inline.
llvm-svn: 48326
2008-03-13 05:00:21 +00:00
Chris Lattner 4d650c4bee Various improvements suggested by Duncan
llvm-svn: 48325
2008-03-13 04:33:03 +00:00
Chris Lattner 723f2a1646 Fix an incorrect comment, PR2147.
llvm-svn: 48323
2008-03-13 03:29:42 +00:00
Evan Cheng 0ceb8eb150 Improve VarInfo::removeKill() by using std::find instead of linear search.
llvm-svn: 48321
2008-03-13 02:42:55 +00:00
Nick Lewycky 7698bfbe16 Update -mem2reg to use succ_iterator instead of iterating across TerminatorInst
successors. This makes it support nounwind.

llvm-svn: 48320
2008-03-13 02:42:41 +00:00
Evan Cheng 4f610c0de1 Remove unused options.
llvm-svn: 48319
2008-03-13 02:41:34 +00:00
Dan Gohman 565df95a36 Eliminate a few unnecessary uses of dynamic_cast.
llvm-svn: 48318
2008-03-13 02:08:36 +00:00
Dan Gohman 1e9860a2ed Fix a typo.
llvm-svn: 48317
2008-03-13 01:58:48 +00:00
Dan Gohman 1412f515c3 Don't redundantly clear std::vector members in destructors.
llvm-svn: 48316
2008-03-13 01:57:34 +00:00
Dan Gohman 73caf5ff10 Change PMTopLevelManager's PassManagers vector element type from
Pass* to PMDataManager*. PMDataManager is more specific than Pass,
so this more accurately describes the objects that are being stored.

This eliminates the need for several dynamic_casts to PMDataManager*.
It does introduce one dynamic_cast though, in dumpPasses(). Give
this one a comment describing why a dynamic_cast is being used.

llvm-svn: 48315
2008-03-13 01:48:32 +00:00
Dan Gohman 11eecd635c Change PMStack::push to accept a PMDataManager* instead of
a Pass*. PMDataManager* is what it actually holds, so this
makes it clearer.

llvm-svn: 48314
2008-03-13 01:21:31 +00:00
Dan Gohman abf8892706 Fix a typo in a comment.
llvm-svn: 48313
2008-03-13 01:08:50 +00:00
Dan Gohman 37f10d4aeb No need for typedefs with enums in C++.
llvm-svn: 48312
2008-03-13 01:07:53 +00:00
Evan Cheng 399e1101ba Refactor some code out of MachineSink into a MachineInstr query.
llvm-svn: 48311
2008-03-13 00:44:09 +00:00
Dale Johannesen 6424bd0b11 Do not promote float params to double in varargs
calls here.  This was done earlier for params in
the varargs part of the params; any float params
that survive to here are in the non-varargs part,
and must not be promoted.

llvm-svn: 48310
2008-03-12 23:40:01 +00:00
Evan Cheng 65e9d5f1a8 Experimental scheduler change to schedule / coalesce the copies added for function livein's. Take 2008-03-10-RegAllocInfLoop.ll, the schedule looks like this after these copies are inserted:
entry: 0x12049d0, LLVM BB @0x1201fd0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1028<def> = MOV32rr %EAX
        %reg1029<def> = MOV32rr %EDX
        %reg1030<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x1201910 + 0]
        %reg1025<def> = MOV32rr %reg1029
        %reg1026<def> = MOV32rr %reg1030
        %reg1024<def> = MOV32rr %reg1028

The copies unnecessarily increase register pressure and it will end up requiring a physical register to be spilled.

With -schedule-livein-copies:
entry: 0x12049d0, LLVM BB @0x1201fa0, ID#0:
Live Ins: %EAX %EDX %ECX
        %reg1031<def> = MOVPC32r 0
        %reg1032<def> = ADD32ri %reg1031, <es:_GLOBAL_OFFSET_TABLE_>, %EFLAGS<imp-def>
        %reg1024<def> = MOV32rr %EAX
        %reg1025<def> = MOV32rr %EDX
        %reg1026<def> = MOV32rr %ECX
        %reg1027<def> = MOV8rm %reg0, 1, %reg0, 0, Mem:LD(1,1) [0x12018e0 + 0]

Much better!

llvm-svn: 48307
2008-03-12 22:19:41 +00:00
Duncan Sands 723849a17f Initial soft-float support for LegalizeTypes. I rewrote
the fcopysign expansion from LegalizeDAG to get rid of
what seems to be a bug: the use of sign extension means
that when copying the sign bit from an f32 to an f64,
the upper 32 bits of the f64 (now an i64) are set, not
just the top bit...  I also generalized it to work for
any sized floating point types, and removed the bogosity:
  SDOperand Mask1 = (SrcVT == MVT::f64)
    ? DAG.getConstantFP(BitsToDouble(1ULL << 63), SrcVT)
    : DAG.getConstantFP(BitsToFloat(1U << 31), SrcVT);
  Mask1 = DAG.getNode(ISD::BIT_CONVERT, SrcNVT, Mask1);
(here SrcNVT is an integer with the same size as SrcVT).
As far as I can see this takes a 1 << 63, converts to
a double, converts that to a floating point constant
then converts that to an integer constant, ending up
with... 1 << 63 as an integer constant!  So I just
generate this integer constant directly.

llvm-svn: 48305
2008-03-12 21:27:04 +00:00
Dan Gohman 34ae72c435 Change VirtRegMap's dump to dump to cerr, not DOUT, so that it
can be called from within a debuger without having -debug specified
on the command-line.

llvm-svn: 48298
2008-03-12 20:52:10 +00:00
Dan Gohman bf68f9fd8d Fix typos in comments.
llvm-svn: 48297
2008-03-12 20:50:04 +00:00
Dan Gohman f7492cf0ec Fix this test on hosts that don't have sse2.
llvm-svn: 48296
2008-03-12 20:40:51 +00:00
Duncan Sands c54fe97f08 Fix typo.
llvm-svn: 48295
2008-03-12 20:35:19 +00:00
Duncan Sands 87de65fc29 Don't try to extract an i32 from an f64. This
getCopyToParts problem was noticed by the new
LegalizeTypes infrastructure.  In order to avoid
this kind of thing in the future I've added a
check that EXTRACT_ELEMENT is only used with
integers.  Once LegalizeTypes is up and running
most likely BUILD_PAIR and EXTRACT_ELEMENT can
be removed, in favour of using apints instead.

llvm-svn: 48294
2008-03-12 20:30:08 +00:00
Chris Lattner 8a923e7c28 Reimplement the parameter attributes support, phase #1. hilights:
1. There is now a "PAListPtr" class, which is a smart pointer around
   the underlying uniqued parameter attribute list object, and manages
   its refcount.  It is now impossible to mess up the refcount.
2. PAListPtr is now the main interface to the underlying object, and
   the underlying object is now completely opaque.
3. Implementation details like SmallVector and FoldingSet are now no
   longer part of the interface.
4. You can create a PAListPtr with an arbitrary sequence of
   ParamAttrsWithIndex's, no need to make a SmallVector of a specific 
   size (you can just use an array or scalar or vector if you wish).
5. All the client code that had to check for a null pointer before
   dereferencing the pointer is simplified to just access the 
   PAListPtr directly.
6. The interfaces for adding attrs to a list and removing them is a
   bit simpler.

Phase #2 will rename some stuff (e.g. PAListPtr) and do other less 
invasive changes.

llvm-svn: 48289
2008-03-12 17:45:29 +00:00
Chris Lattner ee8d960ed1 no need to keep around this output.
llvm-svn: 48285
2008-03-12 17:14:06 +00:00
Evan Cheng 136a24742c Document an implementation detail about EXTRACT_SUBREG and INSERT_SUBREG sub-register operand.
llvm-svn: 48283
2008-03-12 07:52:15 +00:00
Owen Anderson 6ff0b822b4 Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.

llvm-svn: 48280
2008-03-12 07:37:44 +00:00
Evan Cheng 99ee78ef63 Clean up my own mess.
X86 lowering normalize vector 0 to v4i32. However DAGCombine can fold (sub x, x) -> 0 after legalization. It can create a zero vector of a type that's not expected (e.g. v8i16). We don't want to disable the optimization since leaving a (sub x, x) is really bad. Add isel patterns for other types of vector 0 to ensure correctness. It's highly unlikely to happen other than in bugpoint reduced test cases.

llvm-svn: 48279
2008-03-12 07:02:50 +00:00
Owen Anderson 944b1c76ab We also need to collect the VN IDs for the PHI instructions for later updating.
llvm-svn: 48278
2008-03-12 04:22:57 +00:00
Owen Anderson 70aaab6dc5 When we're determining what registers to coallesce, track the VNInfo IDs for the definitions that
feed the PHI instructions.  We'll need these IDs in order to update LiveIntervals properly.

llvm-svn: 48277
2008-03-12 03:13:29 +00:00
Chris Lattner e7b19035ed when the bitcode reader is referencing a paramattr, make sure to bump its refcount.
llvm-svn: 48276
2008-03-12 02:25:52 +00:00
Evan Cheng 0903aef2ff Total brain cramp.
llvm-svn: 48274
2008-03-12 02:05:05 +00:00
Chris Lattner 1f49988a7a This is a simple fix for getting error messages from dlerror in
LoadLibraryPermanently. The current code modifies the value of a pointer
that is passed by value, so the caller never gets the message.

Patch by Julien Lerouge!

llvm-svn: 48270
2008-03-12 00:50:01 +00:00
Dale Johannesen 0d98256c05 One more bit of Altivec parameter passing.
llvm-svn: 48269
2008-03-12 00:49:20 +00:00
Anton Korobeynikov 2f22e3f690 Be backward compatible
llvm-svn: 48268
2008-03-12 00:49:19 +00:00
Devang Patel cc189b5606 Check multiple return values.
llvm-svn: 48267
2008-03-12 00:32:32 +00:00
Dan Gohman 35f8f07c00 Make this test x86-specific for now; targets that don't use
the automated CallingConv code to handle return values typically
don't support multiple return values.

llvm-svn: 48265
2008-03-12 00:25:14 +00:00
Dale Johannesen b28456ef18 Implement Altivec passing to varargs functions on ppc.
llvm-svn: 48264
2008-03-12 00:22:17 +00:00
Evan Cheng 105cb3988b Set NextMII after issuing a physical register spill.
llvm-svn: 48263
2008-03-12 00:14:07 +00:00
Devang Patel fa8667a2dd Fix attribute handling.
llvm-svn: 48262
2008-03-12 00:07:03 +00:00
Evan Cheng b398635456 Minor debug output bug.
llvm-svn: 48261
2008-03-12 00:02:46 +00:00
Dan Gohman 8a361c1f92 Basic feature test for multiple return values in codegen.
llvm-svn: 48260
2008-03-11 23:53:16 +00:00
Anton Korobeynikov e6d90f5a95 Ultimately resolve aliases during linking, if possible
llvm-svn: 48259
2008-03-11 22:51:09 +00:00
Anton Korobeynikov 80b53b8f6b Testcase for PR2137
llvm-svn: 48258
2008-03-11 22:43:42 +00:00
Anton Korobeynikov e8fa50f63a Correctly propagate thread-local flag from aliasee to alias. This fixes PR2137
llvm-svn: 48257
2008-03-11 22:38:53 +00:00
Dan Gohman 24570836b2 Use PassManagerBase instead of FunctionPassManager for functions
that merely add passes. This allows them to be used with either
FunctionPassManager or PassManager, or even with a custom new
kind of pass manager.

llvm-svn: 48256
2008-03-11 22:29:46 +00:00
Anton Korobeynikov da7db7d9a1 Add helper for ultimate aliasee resoltion
llvm-svn: 48255
2008-03-11 22:28:56 +00:00
Devang Patel 7358165c99 Handle multiple ret values.
llvm-svn: 48254
2008-03-11 22:24:29 +00:00
Devang Patel f6269f0914 Initialize.
llvm-svn: 48253
2008-03-11 22:08:21 +00:00
Dan Gohman 20af5a0fe7 Check to see if a two-entry PHI block can be simplified
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.

llvm-svn: 48252
2008-03-11 21:53:06 +00:00
Dan Gohman 8e9ae96a4a Make this test more challenging to help it avoid being
optimized away before it tests what it is intended to test.

llvm-svn: 48251
2008-03-11 21:47:57 +00:00
Anton Korobeynikov 6f51973734 Update testcase for recent aliases change
llvm-svn: 48250
2008-03-11 21:42:20 +00:00
Anton Korobeynikov 2601d7ee50 Honour aliases visibility during asm emission
llvm-svn: 48249
2008-03-11 21:41:14 +00:00
Anton Korobeynikov db691cbd6d Honour aliases visibility when reading from/writing to bitcode
llvm-svn: 48248
2008-03-11 21:40:17 +00:00
Dan Gohman 6616836e71 Add a test to ensure that all-ones vectors are materialized with pcmpeqd.
llvm-svn: 48247
2008-03-11 21:37:00 +00:00
Evan Cheng a3891365b5 Transfer physical register spill info when load / store folding happens.
llvm-svn: 48246
2008-03-11 21:34:46 +00:00
Dan Gohman 44b4c07cd1 Use the correct value for InSignBit.
llvm-svn: 48245
2008-03-11 21:29:43 +00:00
Dan Gohman 1351025a91 Initial codegen support for functions and calls with multiple return values.
llvm-svn: 48244
2008-03-11 21:11:25 +00:00
Chris Lattner 8abed80a69 Implement basic support for the 'f' register class constraint. This basically
works, but probably won't if you mix it with 't' or 'u' yet.

llvm-svn: 48243
2008-03-11 19:50:13 +00:00
Chris Lattner 7b27ccfd5e coalesce away 80-bit floating point copies.
llvm-svn: 48241
2008-03-11 19:30:09 +00:00
Chris Lattner 7930d8e775 convert a massive if statement to a switch.
llvm-svn: 48240
2008-03-11 19:28:17 +00:00
Chris Lattner 120ad01fcb start handling the 'f' x87 constraint.
llvm-svn: 48239
2008-03-11 19:06:29 +00:00
Devang Patel 70c238a1d8 Skip functions that return multiple values.
llvm-svn: 48233
2008-03-11 18:04:06 +00:00
Dale Johannesen 1b12647544 The feature this is testing did not work in the general case,
and has been removed.

llvm-svn: 48232
2008-03-11 17:48:26 +00:00
Devang Patel 5aafa6ee1f Fix getOperand() for ReturnInst.
llvm-svn: 48229
2008-03-11 17:35:03 +00:00
Devang Patel 5663fe6613 Become multiple return value aware.
Right now, the pass does not optimize tail recursions 
involving multiple return values.

llvm-svn: 48228
2008-03-11 17:33:32 +00:00
Devang Patel e418de3023 Add TODO reminder.
llvm-svn: 48227
2008-03-11 17:32:05 +00:00
Dan Gohman d3a20c9e1e Give PassManager and FunctionPassManager a common base class, with
add(Pass *) as a pure virtual member function. This will allow all
the various addPassesTo* functions in LLVM to avoid hard-coding what
type of PassManager is used. 

llvm-svn: 48226
2008-03-11 16:41:42 +00:00
Dan Gohman dfdf2c0633 Fix typos in comments.
llvm-svn: 48225
2008-03-11 16:18:48 +00:00
Christopher Lamb 342e4104d3 Missed part of recommit.
llvm-svn: 48224
2008-03-11 10:27:36 +00:00
Christopher Lamb aa7c2105de Recommitting parts of r48130. These do not appear to cause the observed failures.
llvm-svn: 48223
2008-03-11 10:09:17 +00:00
Christopher Lamb a731239c30 Recommitting changes after more testing. These appear to cause no problems.
llvm-svn: 48222
2008-03-11 09:33:47 +00:00
Evan Cheng d54660aeed Use TargetRegisterInfo::getPhysicalRegisterRegClass. Remove duplicated code.
llvm-svn: 48221
2008-03-11 07:55:13 +00:00
Evan Cheng d85667b89c If there are multiple register classes that a register belongs to, return the super-class (e.g. on x86, returns GR32, not GR32_).
llvm-svn: 48220
2008-03-11 07:54:14 +00:00
Evan Cheng 34e5b34426 Learn how to xfail a test.
llvm-svn: 48219
2008-03-11 07:51:31 +00:00
Evan Cheng e88a625ecd When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting.
llvm-svn: 48218
2008-03-11 07:19:34 +00:00
Evan Cheng 5b59e372dc In 32-bit mode, mark 64-bit GPR's as unallocatable.
llvm-svn: 48217
2008-03-11 07:16:00 +00:00
Evan Cheng 756f9d9c51 XFAIL due to Dale's change.
llvm-svn: 48216
2008-03-11 07:15:44 +00:00
Duncan Sands b29f93613d Some LegalizeTypes code factorization and minor
enhancements.

llvm-svn: 48215
2008-03-11 06:41:14 +00:00
Chris Lattner 5c7bda440f compile: double test() {}
into:

_test:
	fldz
	ret

instead of:

_test:
	subl	$12, %esp
	#IMPLICIT_DEF %xmm0
	movsd	%xmm0, (%esp)
	fldl	(%esp)
	addl	$12, %esp
	ret

llvm-svn: 48213
2008-03-11 06:21:08 +00:00
Nick Lewycky a3860a2422 Fix the build on gcc 4.2.
llvm-svn: 48212
2008-03-11 05:56:09 +00:00
Devang Patel d0f476471d fix grammer
llvm-svn: 48211
2008-03-11 05:51:59 +00:00
Devang Patel a7a2075ab8 Initial multiple return values support.
llvm-svn: 48210
2008-03-11 05:46:42 +00:00
Chris Lattner 1bd44363f2 Change the model for FP Stack return to use fp operands on the
RET instruction instead of using FpSET_ST0_32.  This also generalizes
the code to handling returning of multiple FP results.

llvm-svn: 48209
2008-03-11 03:23:40 +00:00
Chris Lattner 3e0ec65678 variadic instructions don't have operand info for variadic arguments.
llvm-svn: 48208
2008-03-11 03:14:42 +00:00
Dan Gohman 319234d67c Upgrade this test.
llvm-svn: 48207
2008-03-11 02:19:59 +00:00
Dan Gohman d6819da453 Generalize ExpandIntToFP to handle the case where the operand is legal
and it's the result that requires expansion. This code is a little confusing
because the TargetLoweringInfo tables for [US]INT_TO_FP use the operand type
(the integer type) rather than the result type. 

llvm-svn: 48206
2008-03-11 01:59:03 +00:00
Chris Lattner d3090bcfc8 If a register operand comes from the variadic part of a node, don't
verify the register constraint matches what the instruction expects.

llvm-svn: 48205
2008-03-11 00:59:28 +00:00
Evan Cheng 850e143cbf Temporarily revert 48175.
llvm-svn: 48204
2008-03-11 00:27:34 +00:00
Anton Korobeynikov 2591afca0a Fix thinko: alias always defines new symbol. Even is aliasee itself is undefined.
llvm-svn: 48203
2008-03-11 00:24:53 +00:00
Dan Gohman 10f7d850cf More APInt-ification.
llvm-svn: 48201
2008-03-11 00:11:06 +00:00