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
9045e3dd2f
Forgot this.
...
llvm-svn: 49247
2008-04-05 02:17:58 +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
8d64999daf
This is the initial check-in for adding register scavenging to PPC. (Currently,
...
PPC-64 doesn't work.) This also lowers the spilling of the CR registers so that
it uses a register other than the default R0 register (the scavenger scrounges
for one). A significant part of this patch fixes how kill information is
handled.
llvm-svn: 47863
2008-03-03 22:19:16 +00:00
Dan Gohman
cabaec582f
Rename MRegisterInfo to TargetRegisterInfo.
...
llvm-svn: 46930
2008-02-10 18:45:23 +00:00
Chris Lattner
e0b1ee937a
Don't attribute in file headers anymore. See llvmdev for the
...
discussion of this change. Boy are my fingers tired. ;-)
llvm-svn: 45411
2007-12-29 19:59:42 +00:00
Dan Gohman
e2c92effea
Add explicit keywords and remove spurious trailing semicolons.
...
llvm-svn: 41482
2007-08-27 14:50:10 +00:00
Dan Gohman
a83ac4f3b4
Add explicit keywords.
...
llvm-svn: 37925
2007-07-05 20:40:15 +00:00
Evan Cheng
e7bd8c76db
Pass call frame setup SP adjustment along to eliminateFrameIndex().
...
llvm-svn: 36624
2007-05-01 08:59:18 +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
1d943badac
Fix comment.
...
llvm-svn: 35139
2007-03-18 03:26:04 +00:00
Evan Cheng
4161981d63
Add skipTo to set internal iterator. Useful when pointed to instruction is deleted.
...
llvm-svn: 34997
2007-03-07 02:36:16 +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
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
b2afac27e9
Clean up interface.
...
llvm-svn: 34769
2007-03-01 02:18:06 +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
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
