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4551 Commits

Author SHA1 Message Date
Chris Lattner
bcb087fd62 The type of the 'abort' node should be pointer type (because 
it's a function pointer) not MVT::Other.  This fixes builtin_trap
lowering on ppc, alpha, ia64

llvm-svn: 46018
 2008-01-15 22:09:33 +00:00
Owen Anderson
946d55e773 Remove DefInst from LiveVariables::VarInfo. Use the facilities on MachineRegisterInfo instead. 
llvm-svn: 46016
 2008-01-15 22:02:46 +00:00
Chris Lattner
54fd35650d Add support for targets that have a legal ISD::TRAP. 
llvm-svn: 46014
 2008-01-15 21:58:08 +00:00
Evan Cheng
4eb3d6c8d6 Oops. Forgot to commit this. 
llvm-svn: 46002
 2008-01-15 07:49:36 +00:00
Anton Korobeynikov
08ea121968 For PR1839: add initial support for __builtin_trap. llvm-gcc part is missed 
as well as PPC codegen

llvm-svn: 46001
 2008-01-15 07:02:33 +00:00
Evan Cheng
57714c090b ByVal stack slot alignment should be at least as large as pointer ABI alignment. 
llvm-svn: 45995
 2008-01-15 03:14:05 +00:00
Chris Lattner
b067edf1b3 don't create the post-ra scheduler unless it is enabled. 
llvm-svn: 45972
 2008-01-14 19:00:06 +00:00
Chris Lattner
a6559b0047 remove dead #include 
llvm-svn: 45971
 2008-01-14 18:45:28 +00:00
Duncan Sands
423244deda Remove the assumption that byval has been applied to 
a pointer to a struct.

llvm-svn: 45939
 2008-01-13 21:19:59 +00:00
Chris Lattner
efa13b2edd implement support for sinking a load out the bottom of a block that 
has no stores between the load and the end of block.  This works 
great and sinks hundreds of stores, but we can't turn it on because
machineinstrs don't have volatility information and we don't want to
sink volatile stores :(

llvm-svn: 45894
 2008-01-12 00:17:41 +00:00
Chris Lattner
bfffa4f21e Simplify the side effect stuff a bit more and make licm/sinking 
both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.

llvm-svn: 45843
 2008-01-10 23:08:24 +00:00
Chris Lattner
e5b817779c Clamp down on sinking of lots of instructions. 
llvm-svn: 45841
 2008-01-10 22:35:15 +00:00
Duncan Sands
2c89976416 Output sinl for a long double FSIN node, not sin. 
Likewise fix up a bunch of other libcalls.  While
there I remove NEG_F32 and NEG_F64 since they are
not used anywhere.  This fixes 9 Ada ACATS failures.

llvm-svn: 45833
 2008-01-10 10:28:30 +00:00
Evan Cheng
444d24972f Only remat loads from immutable stack slots. 
llvm-svn: 45831
 2008-01-10 08:24:38 +00:00
Evan Cheng
6e03db7604 Simplify some code. 
llvm-svn: 45830
 2008-01-10 08:22:10 +00:00
Owen Anderson
59c3242247 Don't use LiveVariables::VarInfo::DefInst. 
llvm-svn: 45815
 2008-01-10 03:12:54 +00:00
Dale Johannesen
fdd4b3846f Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811
 2008-01-10 02:03:30 +00:00
Owen Anderson
a8f32828c8 Get rid of all uses of LiveVariables::VarInfo::DefInst in favor of the equivalent API from 
MachineRegisterInfo.  Once all clients are switched over, the former will be going away.

llvm-svn: 45805
 2008-01-10 01:36:43 +00:00
Owen Anderson
e2b710013f Add more comments explaining the basics of how the decision of when to rename and when to insert 
copies is made.

llvm-svn: 45799
 2008-01-10 00:47:01 +00:00
Owen Anderson
a0e5b9a317 Get rid of the isKillInst predicate. LiveVariables already provides this information. 
llvm-svn: 45797
 2008-01-10 00:33:11 +00:00
Owen Anderson
b5be87349c Copies need to be inserted before the first terminator, not at the end of the block. 
llvm-svn: 45791
 2008-01-10 00:01:41 +00:00
Evan Cheng
ba0214a6cb Special copy SUnit's do not have SDNode's. 
llvm-svn: 45787
 2008-01-09 23:01:55 +00:00
Owen Anderson
62bb891e23 Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's 
still more work to do on this front.

llvm-svn: 45783
 2008-01-09 22:40:54 +00:00
Owen Anderson
9555739636 StrongPHIElim: Now with even fewer trivial bugs! 
llvm-svn: 45775
 2008-01-09 10:41:39 +00:00
Owen Anderson
c937ae34a5 Fix an infinite recursion bug in InsertCopies. 
llvm-svn: 45774
 2008-01-09 10:32:30 +00:00
Owen Anderson
01e1f23391 Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip. 
llvm-svn: 45773
 2008-01-09 06:19:05 +00:00
Chris Lattner
c93ad7d569 Make load->store deletion a bit smarter. This allows us to compile this: 
void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762
 2008-01-08 23:08:06 +00:00
Owen Anderson
3d5485728a Rename registers that do not need copies. 
llvm-svn: 45759
 2008-01-08 21:54:52 +00:00
Owen Anderson
23abe71f4d Actually insert copies now! 
llvm-svn: 45738
 2008-01-08 05:16:15 +00:00
Owen Anderson
6f06a8e8d2 Oops, missed one. 
llvm-svn: 45719
 2008-01-07 21:32:09 +00:00
Owen Anderson
692d2acef8 Make some predicates static. 
llvm-svn: 45718
 2008-01-07 21:30:40 +00:00
Gordon Henriksen
fb55daea95 Pruning includes. 
llvm-svn: 45700
 2008-01-07 13:30:38 +00:00
Chris Lattner
f4f5495b06 remove #includage 
llvm-svn: 45697
 2008-01-07 07:42:25 +00:00
Chris Lattner
f83aae613c rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
 2008-01-07 07:27:27 +00:00
Chris Lattner
e78ce25794 simplify some code. 
llvm-svn: 45693
 2008-01-07 06:47:00 +00:00
Chris Lattner
57e851edfe Rename all the M_* flags to be namespace qualified enums, and switch 
all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.

llvm-svn: 45692
 2008-01-07 06:42:05 +00:00
Chris Lattner
c745aa59b3 add more and significantly better comments to the rest of the machineinstr 
flags that can be set.  Add predicates for the ones lacking it, and switch
some clients over to using the predicates instead of Flags directly.

llvm-svn: 45690
 2008-01-07 06:21:53 +00:00
Chris Lattner
18038a0aac simplify some code using new predicates 
llvm-svn: 45689
 2008-01-07 05:40:58 +00:00
Chris Lattner
9b987de2c5 rename hasVariableOperands() -> isVariadic(). Add some comments. 
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.

llvm-svn: 45687
 2008-01-07 05:19:29 +00:00
Chris Lattner
9d38dfa4a5 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
llvm-svn: 45680
 2008-01-07 03:13:06 +00:00
Chris Lattner
96d0a93f8e remove some uses of MachineOpCode, move getSchedClass 
into TargetInstrDescriptor from TargetInstrInfo.

llvm-svn: 45678
 2008-01-07 02:46:03 +00:00
Chris Lattner
93e1e6ee12 Add predicates methods to TargetOperandInfo, and switch all clients 
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677
 2008-01-07 02:39:19 +00:00
Gordon Henriksen
edbfece273 Setting GlobalDirective in TargetAsmInfo by default rather than 
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45676
 2008-01-07 02:31:11 +00:00
Chris Lattner
f7f96d818f Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674
 2008-01-07 01:56:04 +00:00
Owen Anderson
2e866e9cdf Update CodeGen for MRegisterInfo --> TargetInstrInfo changes. 
llvm-svn: 45673
 2008-01-07 01:35:56 +00:00
Gordon Henriksen
759ed9d805 Ammending r45669 with a missing file. 
llvm-svn: 45671
 2008-01-07 01:33:09 +00:00
Gordon Henriksen
db4f51e1b9 With this patch, the LowerGC transformation becomes the 
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.

Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):

; shadowstack prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    $___gc_fun, 20(%esp)
        movl    $0, 24(%esp)
        movl    $0, 28(%esp)
        movl    $0, 32(%esp)
        movl    $0, 36(%esp)
        movl    $0, 40(%esp)
        movl    $0, 44(%esp)
        movl    $0, 48(%esp)
        movl    $0, 52(%esp)
        movl    %ecx, 16(%esp)
        leal    16(%esp), %ecx
        movl    %ecx, (%eax)

; shadowstack loop overhead
        (none)

; shadowstack epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; shadowstack metadata
        .align  3
___gc_fun:                              # __gc_fun
        .long   8
        .space  4

In comparison to LowerGC:

; lowergc prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    %ecx, 48(%esp)
        movl    $8, 52(%esp)
        movl    $0, 60(%esp)
        movl    $0, 56(%esp)
        movl    $0, 68(%esp)
        movl    $0, 64(%esp)
        movl    $0, 76(%esp)
        movl    $0, 72(%esp)
        movl    $0, 84(%esp)
        movl    $0, 80(%esp)
        movl    $0, 92(%esp)
        movl    $0, 88(%esp)
        movl    $0, 100(%esp)
        movl    $0, 96(%esp)
        movl    $0, 108(%esp)
        movl    $0, 104(%esp)
        movl    $0, 116(%esp)
        movl    $0, 112(%esp)

; lowergc loop overhead
        leal    44(%esp), %eax
        movl    %eax, 56(%esp)
        leal    40(%esp), %eax
        movl    %eax, 64(%esp)
        leal    36(%esp), %eax
        movl    %eax, 72(%esp)
        leal    32(%esp), %eax
        movl    %eax, 80(%esp)
        leal    28(%esp), %eax
        movl    %eax, 88(%esp)
        leal    24(%esp), %eax
        movl    %eax, 96(%esp)
        leal    20(%esp), %eax
        movl    %eax, 104(%esp)
        leal    16(%esp), %eax
        movl    %eax, 112(%esp)

; lowergc epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; lowergc metadata
        (none)

llvm-svn: 45670
 2008-01-07 01:30:53 +00:00
Gordon Henriksen
88a41c672b Enabling the target-independent garbage collection infrastructure by hooking it 
up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.

llvm-svn: 45669
 2008-01-07 01:30:38 +00:00
Chris Lattner
14310afe42 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate. 
llvm-svn: 45667
 2008-01-06 23:38:27 +00:00
Chris Lattner
5489888580 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +00:00
Duncan Sands
63b3355183 Remove an unused variable. 
llvm-svn: 45655
 2008-01-06 07:43:13 +00:00
Chris Lattner
60aa495a41 make this build with newer gcc's 
llvm-svn: 45637
 2008-01-05 23:29:51 +00:00
Nate Begeman
a6e9de35ae If custom lowering of insert element fails, the result Val will be 0. 
Don't overwrite a variable used by the fallthrough code path in this
case.

llvm-svn: 45630
 2008-01-05 20:47:37 +00:00
Chris Lattner
9f51583a6a Fix build issue on certain compilers. 
llvm-svn: 45629
 2008-01-05 20:15:42 +00:00
Chris Lattner
0d444b96ac The current impl is really trivial, add some comments about how it can be made better. 
llvm-svn: 45625
 2008-01-05 06:47:58 +00:00
Chris Lattner
9428a7d97f allow sinking to be enabled for the jit 
llvm-svn: 45624
 2008-01-05 06:14:16 +00:00
Chris Lattner
9e7943159e don't sink anything with side effects, this makes lots of stuff work, but sinks almost nothing. 
llvm-svn: 45617
 2008-01-05 02:33:22 +00:00
Chris Lattner
377c720459 fix a common crash. 
llvm-svn: 45614
 2008-01-05 01:39:17 +00:00
Owen Anderson
8c8c5906f8 I should not be allowed to commit when sleepy. 
llvm-svn: 45608
 2008-01-05 00:48:55 +00:00
Bill Wendling
93556af6c4 Don't recalculate the loop info and loop dominators analyses if they're 
preserved.

llvm-svn: 45596
 2008-01-04 20:54:55 +00:00
Bill Wendling
4f3a9df125 80-column violations. 
llvm-svn: 45574
 2008-01-04 08:59:18 +00:00
Bill Wendling
2017097bb8 Add that this preserves some analyses. 
llvm-svn: 45573
 2008-01-04 08:48:49 +00:00
Bill Wendling
13eb1bfc08 Move option to enable machine LICM into LLVMTargetMachine.cpp. 
llvm-svn: 45572
 2008-01-04 08:11:03 +00:00
Bill Wendling
da5d32e248 Call the parent's getAnalysisUsage. 
llvm-svn: 45571
 2008-01-04 07:50:05 +00:00
Chris Lattner
f4972fa569 Add a really quick hack at a machine code sinking pass, enabled with --enable-sinking. 
It is missing validity checks, so it is known broken.  However, it is powerful enough
to compile this contrived code:

void test1(int C, double A, double B, double *P) {
  double Tmp = A*A+B*B;
  *P = C ? Tmp : A;
}

into:

_test1:
	movsd	8(%esp), %xmm0
	cmpl	$0, 4(%esp)
	je	LBB1_2	# entry
LBB1_1:	# entry
	movsd	16(%esp), %xmm1
	mulsd	%xmm1, %xmm1
	mulsd	%xmm0, %xmm0
	addsd	%xmm1, %xmm0
LBB1_2:	# entry
	movl	24(%esp), %eax
	movsd	%xmm0, (%eax)
	ret

instead of:

_test1:
	movsd	16(%esp), %xmm0
	mulsd	%xmm0, %xmm0
	movsd	8(%esp), %xmm1
	movapd	%xmm1, %xmm2
	mulsd	%xmm2, %xmm2
	addsd	%xmm0, %xmm2
	cmpl	$0, 4(%esp)
	je	LBB1_2	# entry
LBB1_1:	# entry
	movapd	%xmm2, %xmm1
LBB1_2:	# entry
	movl	24(%esp), %eax
	movsd	%xmm1, (%eax)
	ret

woo.

llvm-svn: 45570
 2008-01-04 07:36:53 +00:00
Chris Lattner
b02b90a8f6 remove dead #includes and reorder the rest. 
llvm-svn: 45569
 2008-01-04 06:41:45 +00:00
Bill Wendling
c677923991 Use the correct MachineRegisterInfo object. 
llvm-svn: 45499
 2008-01-02 21:10:54 +00:00
Bill Wendling
005b47c20c Remove dead code. 
llvm-svn: 45496
 2008-01-02 20:47:37 +00:00
Bill Wendling
5843183ca2 Use the new architecture to get the containing machine basic block for a machine 
instruction. Also, use "splice" to move the new instruction instead of
remove/insert (where it was leaking memory anyway).

llvm-svn: 45492
 2008-01-02 19:32:43 +00:00
Owen Anderson
e6856128ab Move some more instruction creation methods from RegisterInfo into InstrInfo. 
llvm-svn: 45484
 2008-01-01 21:11:32 +00:00
Chris Lattner
fc976a38ff Make MachineRegisterInfo::getVRegDef more efficient by aiming the keep the def of the vreg at the start of the list, so the list doesn't need to be traversed. 
llvm-svn: 45483
 2008-01-01 21:08:22 +00:00
Chris Lattner
490a9681cb switch the register iterator to act more like hte LLVM value iterator: dereferencing 
it now returns the machineinstr of the use.  To get the operand, use I.getOperand().

Add a new MachineRegisterInfo::replaceRegWith, which is basically like
Value::replaceAllUsesWith.

llvm-svn: 45482
 2008-01-01 20:36:19 +00:00
Chris Lattner
7091807c2d Add a trivial but handy function to efficiently return the machine 
instruction that defines the specified vreg.  Crazy.

llvm-svn: 45480
 2008-01-01 03:07:29 +00:00
Chris Lattner
39b56ec51b Implement automatically updated def/use lists for all MachineInstr register 
operands.  The lists are currently kept in MachineRegisterInfo, but it does
not yet provide an iterator interface to them.

llvm-svn: 45477
 2008-01-01 01:12:31 +00:00
Chris Lattner
1285ec2ae7 Fix a problem where lib/Target/TargetInstrInfo.h would include and use 
a header file from libcodegen.  This violates a layering order: codegen
depends on target, not the other way around.  The fix to this is to 
split TII into two classes, TII and TargetInstrInfoImpl, which defines
stuff that depends on libcodegen.  It is defined in libcodegen, where 
the base is not.

llvm-svn: 45475
 2008-01-01 01:03:04 +00:00
Duncan Sands
8a4882564a Fix PR1833 - eh.exception and eh.selector return two 
values, which means doing extra legalization work.
It would be easier to get this kind of thing right if
there was some documentation...

llvm-svn: 45472
 2007-12-31 18:35:50 +00:00
Owen Anderson
ae7e2c1e03 Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the 
Machine-level API cleanup instigated by Chris.

llvm-svn: 45470
 2007-12-31 06:32:00 +00:00
Chris Lattner
d8b7ecd871 properly encapsulate the parent field of MBB and MI with get/set accessors. 
llvm-svn: 45469
 2007-12-31 04:56:33 +00:00
Chris Lattner
de54e62962 update a couple of references to SSARegMap. 
llvm-svn: 45468
 2007-12-31 04:16:08 +00:00
Chris Lattner
96167aa93c Rename SSARegMap -> MachineRegisterInfo in keeping with the idea 
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.

llvm-svn: 45467
 2007-12-31 04:13:23 +00:00
Chris Lattner
9e5cc35593 Add new shorter predicates for testing machine operands for various types: 
e.g. MO.isMBB() instead of MO.isMachineBasicBlock().  I don't plan on 
switching everything over, so new clients should just start using the 
shorter names.

Remove old long accessors, switching everything over to use the short
accessor: getMachineBasicBlock() -> getMBB(), 
getConstantPoolIndex() -> getIndex(), setMachineBasicBlock -> setMBB(), etc.

llvm-svn: 45464
 2007-12-30 23:10:15 +00:00
Chris Lattner
7504adbd72 More cleanups for MachineOperand: 
- Eliminate the static "print" method for operands, moving it
    into MachineOperand::print.
  - Change various set* methods for register flags to take a bool
    for the value to set it to.  Remove unset* methods.
  - Group methods more logically by operand flavor in MachineOperand.h

llvm-svn: 45461
 2007-12-30 21:56:09 +00:00
Chris Lattner
7d47b6c164 MachineOperand: 
- Add getParent() accessors.
  - Move SubReg out of the AuxInfo union, to make way for future changes.
  - Remove the getImmedValue/setImmedValue methods.
  - in some MachineOperand::Create* methods, stop initializing fields that are dead.

MachineInstr:
  - Delete one copy of the MachineInstr printing code, now there is only one dump
    format and one copy of the code.
  - Make MachineOperand use the parent field to get info about preg register names if
    no target info is otherwise available.
  - Move def/use/kill/dead flag printing to the machineoperand printer, so they are
    always printed for an operand.

llvm-svn: 45460
 2007-12-30 21:31:53 +00:00
Chris Lattner
f3f074dfdd fix typo duncan noticed! 
llvm-svn: 45459
 2007-12-30 21:21:10 +00:00
Chris Lattner
31932a7542 simpilfy some register printing code. 
llvm-svn: 45458
 2007-12-30 21:08:36 +00:00
Chris Lattner
46e4658c95 eliminate a copy of the machineoperand printing stuff. Keep the copy that 
knows how to print offsets.

llvm-svn: 45457
 2007-12-30 21:03:30 +00:00
Chris Lattner
ff61fe680e Simplify and clean up some machine operand/instr printing/dumping stuff. 
llvm-svn: 45456
 2007-12-30 21:01:27 +00:00
Chris Lattner
98c3fabf47 two register machineoperands are not identical unless their subregs match. 
llvm-svn: 45455
 2007-12-30 20:55:08 +00:00
Chris Lattner
4a4943a78f MachineOperand::getImmedValue -> MachineOperand::getImm 
llvm-svn: 45454
 2007-12-30 20:50:28 +00:00
Chris Lattner
d6051f028d make machine operands fatter: give each one an up-pointer to the 
machineinstr that owns it.

llvm-svn: 45449
 2007-12-30 06:11:04 +00:00
Chris Lattner
c2f0543beb use simplified operand addition methods. 
llvm-svn: 45436
 2007-12-30 00:57:42 +00:00
Chris Lattner
1b0ad80f53 use simplified operand addition methods. 
llvm-svn: 45435
 2007-12-30 00:51:11 +00:00
Chris Lattner
19dd6c4eac Start using the simplified methods for adding operands. 
llvm-svn: 45432
 2007-12-30 00:41:17 +00:00
Chris Lattner
e868c77f16 simplify some code by factoring operand construction better. 
llvm-svn: 45428
 2007-12-30 00:12:25 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Chris Lattner
8193d4af33 remove attribution from lib Makefiles. 
llvm-svn: 45415
 2007-12-29 20:09:26 +00:00
Chris Lattner
cd147e5596 Fold comparisons against a constant nan, and optimize ORD/UNORD 
comparisons with a constant.  This allows us to compile isnan to:

_foo:
	fcmpu cr7, f1, f1
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

instead of:

LCPI1_0:					;  float
	.space	4
_foo:
	lis r2, ha16(LCPI1_0)
	lfs f0, lo16(LCPI1_0)(r2)
	fcmpu cr7, f1, f0
	mfcr r2
	rlwinm r3, r2, 0, 31, 31
	blr 

llvm-svn: 45405
 2007-12-29 08:37:08 +00:00
Chris Lattner
38687aa2b2 make sure not to zap volatile stores, thanks a lot to Dale for noticing this! 
llvm-svn: 45402
 2007-12-29 07:15:45 +00:00
Chris Lattner
78ae7ff876 don't fold fp_round(fp_extend(load)) -> fp_round(extload) 
llvm-svn: 45400
 2007-12-29 06:55:23 +00:00
Chris Lattner
7cb2de8e48 Delete a store whose input is a load from the same pointer: 
x = load p
  store x -> p

llvm-svn: 45398
 2007-12-29 06:26:16 +00:00
Owen Anderson
1064e276a9 Flesh out the Briggs implementation a little bit more, fix a few FIXMEs. 
llvm-svn: 45347
 2007-12-24 22:12:23 +00:00
Owen Anderson
e9538b78ce Sketch out an implementation of Briggs' copy placement algorithm. 
llvm-svn: 45334
 2007-12-23 15:37:26 +00:00
Chris Lattner
084002dcb0 initial code for forming an FGETSIGN node. This is disabled until 
legalizer support goes in.

llvm-svn: 45323
 2007-12-22 21:35:38 +00:00
Chris Lattner
24b2a6de5c improve support for fgetsign 
llvm-svn: 45322
 2007-12-22 21:26:52 +00:00
Chris Lattner
a8f6fac7a3 Tell TargetLoweringOpt whether it is running before 
or after legalize.

llvm-svn: 45321
 2007-12-22 20:56:36 +00:00
Chris Lattner
f2aa80e0de Add a new FGETSIGN operation, which defaults to expand on all 
targets.

llvm-svn: 45320
 2007-12-22 20:47:56 +00:00
Gordon Henriksen
fccde96a4c Use getIntrinsicID instead of looking up intrinsic prototypes. Also 
fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)

llvm-svn: 45316
 2007-12-22 17:27:01 +00:00
Owen Anderson
3fc4fdaa1f Note what still needs doing. 
llvm-svn: 45310
 2007-12-22 04:59:10 +00:00
Owen Anderson
f3765d08f8 Remove critical edge breaking. It won't be necessary as long as we are very careful when inserting copies. 
llvm-svn: 45309
 2007-12-22 04:50:11 +00:00
Evan Cheng
8fee10d116 More accurate checks for two-address constraints. 
llvm-svn: 45259
 2007-12-20 09:25:31 +00:00
Evan Cheng
d0bb7ee0a1 The physical register + virtual register joining requirement was much too strict. 
llvm-svn: 45253
 2007-12-20 02:23:25 +00:00
Evan Cheng
1994e3038e Bring back a burr scheduling heuristic that's still needed. 
llvm-svn: 45252
 2007-12-20 02:22:36 +00:00
Bill Wendling
cba1938285 Updated comments to reflect what "side effects" means in this situation. 
llvm-svn: 45245
 2007-12-20 01:08:10 +00:00
Duncan Sands
b2e0a67cc0 Simplify LowerCallTo by using a callsite. 
llvm-svn: 45198
 2007-12-19 09:48:52 +00:00
Duncan Sands
09250d2dff The C++ exception handling personality function wants 
to know about calls that cannot throw ('nounwind'):
if such a call does throw for some reason then the
personality will terminate the program.  The distinction
between an ordinary call and a nounwind call is that
an ordinary call gets an entry in the exception table
but a nounwind call does not.  This patch sets up the
exception table appropriately.  One oddity is that
I've chosen to bracket nounwind calls with labels (like
invokes) - the other choice would have been to bracket
ordinary calls with labels.  While bracketing
ordinary calls is more natural (because bracketing
by labels would then correspond exactly to getting an
entry in the exception table), I didn't do it because
introducing labels impedes some optimizations and I'm
guessing that ordinary calls occur more often than
nounwind calls.  This fixes the gcc filter2 eh test,
at least at -O0 (the inliner needs some tweaking at
higher optimization levels).

llvm-svn: 45197
 2007-12-19 07:36:31 +00:00
Evan Cheng
694994ba7b Don't leave newly created nodes around if it turns out they are not needed. 
llvm-svn: 45186
 2007-12-19 01:34:38 +00:00
Bill Wendling
fe0e399130 Add debugging info. Use the newly created "hasUnmodelledSideEffects" method. 
llvm-svn: 45178
 2007-12-18 21:38:04 +00:00
Anton Korobeynikov
f81993feaf Support more insane CEP's in AsmPrinter (Yes, PyPy folks do really use them). 
llvm-svn: 45172
 2007-12-18 20:53:41 +00:00
Evan Cheng
8824950e8f Fix PR1872: SrcValue and SrcValueOffset should not be used to compute load / store node id. 
llvm-svn: 45167
 2007-12-18 19:38:14 +00:00
Evan Cheng
e8de683a74 Also print alignment and volatileness. 
llvm-svn: 45164
 2007-12-18 19:06:30 +00:00
Evan Cheng
36bfae49e3 FIX for PR1799: When a load is unfolded from an instruction, check if it is a new node. If not, do not create a new SUnit. 
llvm-svn: 45157
 2007-12-18 08:42:10 +00:00
Evan Cheng
e6c89b6120 SelectionDAG::dump() should print SrcValue of LoadSDNode and StoreSDNode. 
llvm-svn: 45151
 2007-12-18 07:02:08 +00:00
Duncan Sands
3a0d757bd5 Make invokes of inline asm legal. Teach codegen 
how to lower them (with no attempt made to be
efficient, since they should only occur for
unoptimized code).

llvm-svn: 45108
 2007-12-17 18:08:19 +00:00
Christopher Lamb
a608afb52e Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space. 
llvm-svn: 45082
 2007-12-17 01:12:55 +00:00
Owen Anderson
708d9d117b Break local interferences in StrongPHIElimination. One step closer... 
llvm-svn: 45070
 2007-12-16 05:44:27 +00:00
Owen Anderson
3e37ec0942 A few more comments. 
llvm-svn: 45069
 2007-12-16 04:07:23 +00:00
Dan Gohman
80af3e255d Add explicit keywords, and fix a minor typo that they uncovered. 
llvm-svn: 45034
 2007-12-14 15:41:34 +00:00
Evan Cheng
713b398a35 Bug fix. Must also match ResNo when matching an operand with a user. 
llvm-svn: 45028
 2007-12-14 08:25:15 +00:00
Owen Anderson
22aee19b7e Add register pairs to the list to check for local interferences. 
llvm-svn: 44987
 2007-12-13 05:53:03 +00:00
Owen Anderson
78b8141ce7 Remove ugly and horrible code. It's not necessary for correctness, and can be added back later if it causes code quality issues. 
llvm-svn: 44986
 2007-12-13 05:43:37 +00:00
Evan Cheng
64a1febf9a Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled. 
llvm-svn: 44960
 2007-12-12 23:12:09 +00:00
Dan Gohman
0075ea1f5f Allow vector integer constants to be created with 
SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.

llvm-svn: 44954
 2007-12-12 22:21:26 +00:00
Owen Anderson
70df68f12d Forgot to remove a register from the PHI-union after I'd determined that it 
interfered with other registers.  Seems like that might be a good thing to do. :-)

llvm-svn: 44902
 2007-12-12 01:25:08 +00:00
Evan Cheng
283f581d51 If deleting a reload instruction due to reuse (value is available in register R and reload is targeting R), make sure to invalidate the kill information of the last kill. 
llvm-svn: 44894
 2007-12-11 23:36:57 +00:00
Bill Wendling
20a11adc5e Need to grow the indexed map. Added debug statements. 
llvm-svn: 44892
 2007-12-11 23:27:51 +00:00
Bill Wendling
c92c27f928 Simplify slightly. 
llvm-svn: 44881
 2007-12-11 22:22:22 +00:00
Owen Anderson
fc359fc18b More progress on StrongPHIElimination. Now we actually USE the DomForest! 
llvm-svn: 44877
 2007-12-11 20:12:11 +00:00
Bill Wendling
9f0bcd67cf Blark! How in the world did this work without this?! 
llvm-svn: 44874
 2007-12-11 19:40:06 +00:00
Bill Wendling
30281897da - Update the virtual reg to machine instruction map when hoisting. 
- Fix subtle bug when creating initially creating this map.

llvm-svn: 44873
 2007-12-11 19:17:04 +00:00
Bill Wendling
9f02f24469 Checking for "zero operands" during the "CanHoistInst()" method isn't necessary 
because those with side effects will be caught by other checks in here.

Also, simplify the check for a BB in a sub loop.

llvm-svn: 44871
 2007-12-11 18:45:11 +00:00
Evan Cheng
45c08c8337 Switch over to MachineLoopInfo. 
llvm-svn: 44838
 2007-12-11 02:09:15 +00:00
Evan Cheng
b5ceb5ae06 Pretty print shuffle mask operand. 
llvm-svn: 44837
 2007-12-11 02:08:35 +00:00
Gordon Henriksen
c6f9e0beef CollectorMetadata and Collector are rejiggered to get along with 
per-function collector model. Collector is now the factory for
CollectorMetadata, so the latter may be subclassed.

llvm-svn: 44827
 2007-12-11 00:30:17 +00:00
Owen Anderson
4bd6d18e18 A little more progress on StrongPHIElimination, now that I have a better sense of 
how the CodeGen machinery works.

llvm-svn: 44786
 2007-12-10 08:07:09 +00:00
Christopher Lamb
5c577eb543 Improve branch folding by recgonizing that explict successor relationships impact the value of fall-through choices. 
llvm-svn: 44785
 2007-12-10 07:24:06 +00:00
Chris Lattner
ac2bfb78d9 Duncan points out that the subtraction is unneeded since hte code 
knows the vector is not pow2

llvm-svn: 44740
 2007-12-09 17:56:34 +00:00
Chris Lattner
84241dd771 Add support for splitting the operand of a return instruction. 
llvm-svn: 44728
 2007-12-09 00:06:19 +00:00
Bill Wendling
8d8d9a2f5e Reverting 44702. It wasn't correct to rename them. 
llvm-svn: 44727
 2007-12-08 23:58:46 +00:00
Chris Lattner
164d423f91 add many new cases to SplitResult. SplitResult now handles all the cases that LegalizeDAG does. 
llvm-svn: 44726
 2007-12-08 23:58:27 +00:00
Chris Lattner
6db5e91e16 Implement splitting support for store, allowing us to compile: 
%f8 = type <8 x float>

define void @test_f8(%f8* %P, %f8* %Q, %f8* %S) {
	%p = load %f8* %P		; <%f8> [#uses=1]
	%q = load %f8* %Q		; <%f8> [#uses=1]
	%R = add %f8 %p, %q		; <%f8> [#uses=1]
	store %f8 %R, %f8* %S
	ret void
}

into:

_test_f8:
	movaps	16(%rdi), %xmm0
	addps	16(%rsi), %xmm0
	movaps	(%rdi), %xmm1
	addps	(%rsi), %xmm1
	movaps	%xmm0, 16(%rdx)
	movaps	%xmm1, (%rdx)
	ret

llvm-svn: 44725
 2007-12-08 23:24:26 +00:00