Duncan Sands
4757a8dd76
Fix some constructs that gcc-4.4 warns about.
...
llvm-svn: 51591
2008-05-27 11:50:51 +00:00
Evan Cheng
52208a738f
Allow registers defined by implicit_def to be clobbered.
...
llvm-svn: 49512
2008-04-10 23:47:53 +00:00
Evan Cheng
d7d1c94e67
1. IMPLICIT_DEF can *re-define* any register.
...
2. Coalescer can now create an interesting situation where a register def can
reaches itself without being killed.
llvm-svn: 49246
2008-04-05 01:27:09 +00:00
Bill Wendling
f86174fa61
Something that kills a super-register also
...
kills the sub-register.
llvm-svn: 48038
2008-03-07 23:45:15 +00:00
Evan Cheng
5f74d1a8dc
Fixed a register scavenger bug. If a def is re-defining part of a super register, there must be an implicit def of the super-register on the MI.
...
llvm-svn: 48024
2008-03-07 20:12:54 +00:00
Bill Wendling
b33eee09d2
When setting the "unused" info, take into account something like this:
...
%r3<def> = OR %x3<kill>, %x3
We don't want to mark the %r3 as unused even though it's a sub-register of %x3.
llvm-svn: 48003
2008-03-06 23:22:43 +00:00
Evan Cheng
18064ddb5b
Refactor code. Remove duplicated functions that basically do the same thing as
...
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies.
llvm-svn: 47927
2008-03-05 00:59:57 +00:00
Bill Wendling
b3761b1a39
Make the register scavenger update the bookkeeping values for sub/super
...
registers.
llvm-svn: 47861
2008-03-03 22:12:25 +00:00
Bill Wendling
34dd48a10c
Fix typos.
...
llvm-svn: 47200
2008-02-16 01:09:25 +00:00
Dan Gohman
cabaec582f
Rename MRegisterInfo to TargetRegisterInfo.
...
llvm-svn: 46930
2008-02-10 18:45:23 +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
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
e6856128ab
Move some more instruction creation methods from RegisterInfo into InstrInfo.
...
llvm-svn: 45484
2008-01-01 21:11:32 +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
Evan Cheng
8464a0bf00
Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
...
the stored register is killed.
llvm-svn: 44600
2007-12-05 03:14:33 +00:00
Dan Gohman
fb60c0dfed
Remove isReg, isImm, and isMBB, and change all their users to use
...
isRegister, isImmediate, and isMachineBasicBlock, which are equivalent,
and more popular.
llvm-svn: 41958
2007-09-14 20:33:02 +00:00
Evan Cheng
0c037f4ee0
Better assertion messages.
...
llvm-svn: 37890
2007-07-05 07:05:38 +00:00
Evan Cheng
17f967eb52
If call frame is not part of stack frame and no dynamic alloc, eliminateFrameIndex() must adjust SP offset with size of call frames.
...
llvm-svn: 36625
2007-05-01 09:01:42 +00:00
Evan Cheng
eff332e3e1
Rename findRegisterUseOperand to findRegisterUseOperandIdx to avoid confusion.
...
llvm-svn: 36483
2007-04-26 19:00:32 +00:00
Evan Cheng
bad40843ec
Bad bad bug. findRegisterUseOperand() returns -1 if a use if not found.
...
llvm-svn: 35618
2007-04-03 06:43:29 +00:00
Dale Johannesen
3ad8ab7b61
Fix reversed logic in getRegsUsed. Rename RegStates to RegsAvailable to
...
hopefully forestall similar errors.
llvm-svn: 35362
2007-03-26 22:23:54 +00:00
Dale Johannesen
50a22f6fe6
maintain LiveIn when splitting blocks (register scavenging needs it)
...
llvm-svn: 35226
2007-03-20 21:35:06 +00:00
Evan Cheng
49e8bd5e17
Minor bug fix.
...
llvm-svn: 34985
2007-03-06 21:58:15 +00:00
Evan Cheng
077516f441
Register scavenger is now capable of scavenging. It spills a register whose use of furthest away to make it available.
...
llvm-svn: 34964
2007-03-06 10:01:25 +00:00
Evan Cheng
9dddb88209
Mark dead def as unused.
...
llvm-svn: 34844
2007-03-02 10:43:16 +00:00
Evan Cheng
0aa68b9246
Add a version of FindUnusedReg that restrict search to a specific set of registers.
...
llvm-svn: 34784
2007-03-01 08:56:24 +00:00
Evan Cheng
15a878202b
Interface clean up.
...
llvm-svn: 34770
2007-03-01 02:19:39 +00:00
Evan Cheng
ec12bdd7ea
Some more code clean up.
...
llvm-svn: 34700
2007-02-27 22:58:43 +00:00
Evan Cheng
2402ddad92
Oops.
...
llvm-svn: 34698
2007-02-27 22:10:52 +00:00
Evan Cheng
f03b87c1ff
RegScavenger interface change to make it more flexible.
...
llvm-svn: 34690
2007-02-27 21:09:48 +00:00
Evan Cheng
341fc2bf88
forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call.
...
llvm-svn: 34649
2007-02-27 01:58:48 +00:00
Evan Cheng
13e48f975c
Add an assertion.
...
llvm-svn: 34596
2007-02-25 09:47:31 +00:00
Evan Cheng
bdc95679a3
Mark livein registers as being in used.
...
llvm-svn: 34525
2007-02-23 08:41:19 +00:00
Evan Cheng
f9ef2bfd8a
Initial check in of register scavenger. Its only current functionality is tracking live registers per MBB.
...
llvm-svn: 34511
2007-02-23 01:01:19 +00:00