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Author SHA1 Message Date
Chris Lattner
c4ce73f666 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45570 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-04 07:36:53 +00:00
Chris Lattner
ac69582664 remove dead #includes and reorder the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45569 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-04 06:41:45 +00:00
Bill Wendling
dde059a9de Use the correct MachineRegisterInfo object. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-02 21:10:54 +00:00
Bill Wendling
a4b662272d Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-02 20:47:37 +00:00
Bill Wendling
9258cd3994 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45492 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-02 19:32:43 +00:00
Owen Anderson
f6372aa1cc Move some more instruction creation methods from RegisterInfo into InstrInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 21:11:32 +00:00
Chris Lattner
80fe5311b5 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 21:08:22 +00:00
Chris Lattner
e138b3dd1f 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45482 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 20:36:19 +00:00
Chris Lattner
a91a7d594f Add a trivial but handy function to efficiently return the machine 
instruction that defines the specified vreg.  Crazy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 03:07:29 +00:00
Chris Lattner
62ed6b9ade 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 01:12:31 +00:00
Chris Lattner
6410552250 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45475 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 01:03:04 +00:00
Duncan Sands
b027fa001f 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...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45472 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 18:35:50 +00:00
Owen Anderson
d10fd9791c Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the 
Machine-level API cleanup instigated by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45470 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 06:32:00 +00:00
Chris Lattner
f20c1a497f properly encapsulate the parent field of MBB and MI with get/set accessors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45469 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 04:56:33 +00:00
Chris Lattner
534bcfb270 update a couple of references to SSARegMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45468 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 04:16:08 +00:00
Chris Lattner
84bc5427d6 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 04:13:23 +00:00
Chris Lattner
8aa797aa51 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45464 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 23:10:15 +00:00
Chris Lattner
f73823000e 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45461 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:56:09 +00:00
Chris Lattner
e3087890ac 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45460 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:31:53 +00:00
Chris Lattner
1c3e1e2ed0 fix typo duncan noticed! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45459 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:21:10 +00:00
Chris Lattner
e26dcfe6af simpilfy some register printing code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45458 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:08:36 +00:00
Chris Lattner
7da5313d3f eliminate a copy of the machineoperand printing stuff. Keep the copy that 
knows how to print offsets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45457 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:03:30 +00:00
Chris Lattner
fde5f801be Simplify and clean up some machine operand/instr printing/dumping stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45456 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 21:01:27 +00:00
Chris Lattner
0974d9a524 two register machineoperands are not identical unless their subregs match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45455 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 20:55:08 +00:00
Chris Lattner
9e3304900f MachineOperand::getImmedValue -> MachineOperand::getImm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45454 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 20:50:28 +00:00
Chris Lattner
e12d6abfdf make machine operands fatter: give each one an up-pointer to the 
machineinstr that owns it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45449 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 06:11:04 +00:00
Chris Lattner
9ce2e9d5a0 use simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45436 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:57:42 +00:00
Chris Lattner
fec65d5562 use simplified operand addition methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45435 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:51:11 +00:00
Chris Lattner
8019f41c0b Start using the simplified methods for adding operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45432 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:41:17 +00:00
Chris Lattner
a4161ee994 simplify some code by factoring operand construction better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45428 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 00:12:25 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Chris Lattner
fc643c5e88 remove attribution from lib Makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:09:26 +00:00
Chris Lattner
63079f0757 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 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45405 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 08:37:08 +00:00
Chris Lattner
b253a8b382 make sure not to zap volatile stores, thanks a lot to Dale for noticing this! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45402 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 07:15:45 +00:00
Chris Lattner
5938bef2d2 don't fold fp_round(fp_extend(load)) -> fp_round(extload) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45400 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:55:23 +00:00
Chris Lattner
3c87285af6 Delete a store whose input is a load from the same pointer: 
x = load p
  store x -> p


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45398 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 06:26:16 +00:00
Owen Anderson
f1519e8361 Flesh out the Briggs implementation a little bit more, fix a few FIXMEs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45347 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 22:12:23 +00:00
Owen Anderson
efbcebc95d Sketch out an implementation of Briggs' copy placement algorithm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45334 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 15:37:26 +00:00
Chris Lattner
2ceb2cfa8e initial code for forming an FGETSIGN node. This is disabled until 
legalizer support goes in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45323 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 21:35:38 +00:00
Chris Lattner
d268a497f9 improve support for fgetsign 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 21:26:52 +00:00
Chris Lattner
b16f55f3c8 Tell TargetLoweringOpt whether it is running before 
or after legalize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45321 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 20:56:36 +00:00
Chris Lattner
1a3048bb8e Add a new FGETSIGN operation, which defaults to expand on all 
targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45320 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 20:47:56 +00:00
Gordon Henriksen
a6c9925087 Use getIntrinsicID instead of looking up intrinsic prototypes. Also 
fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45316 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 17:27:01 +00:00
Owen Anderson
cae8d8d4be Note what still needs doing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45310 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 04:59:10 +00:00
Owen Anderson
22c43b2988 Remove critical edge breaking. It won't be necessary as long as we are very careful when inserting copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 04:50:11 +00:00
Evan Cheng
180c210a1d More accurate checks for two-address constraints. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45259 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-20 09:25:31 +00:00
Evan Cheng
689494208b The physical register + virtual register joining requirement was much too strict. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45253 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-20 02:23:25 +00:00
Evan Cheng
d6c0758944 Bring back a burr scheduling heuristic that's still needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45252 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-20 02:22:36 +00:00
Bill Wendling
60ff1a3005 Updated comments to reflect what "side effects" means in this situation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45245 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-20 01:08:10 +00:00
Duncan Sands
6f74b48862 Simplify LowerCallTo by using a callsite. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45198 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-19 09:48:52 +00:00