Dan Gohman
680e1bd958
Enable rematerialization of constants using AliasAnalysis::pointsToConstantMemory,
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and knowledge of PseudoSourceValues. This unfortunately isn't sufficient to allow
constants to be rematerialized in PIC mode -- the extra indirection is a
complication.
llvm-svn: 54000
2008-07-25 00:02:30 +00:00
Evan Cheng
968679913e
Minor spiller tweak to unfavor reload into load/store instructions.
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llvm-svn: 52477
2008-06-19 01:16:17 +00:00
Evan Cheng
e447be0532
Add MachineRegisterInfo::use_empty.
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llvm-svn: 52451
2008-06-18 07:47:55 +00:00
Anton Korobeynikov
f77142326f
For PR1338: rename include/llvm/ADT/ilist and friends to end with ".h"
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llvm-svn: 51687
2008-05-29 17:41:17 +00:00
Evan Cheng
d9353009b7
Fix more -Wshorten-64-to-32 warnings.
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llvm-svn: 50659
2008-05-05 18:30:58 +00:00
Chris Lattner
c7cc29f2a9
update comment.
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llvm-svn: 49010
2008-04-01 00:54:39 +00:00
Anton Korobeynikov
0c5e186924
Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
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llvm-svn: 47367
2008-02-20 11:08:44 +00:00
Evan Cheng
95894280dc
Added debugging routine dumpUses.
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llvm-svn: 47042
2008-02-13 02:45:38 +00:00
Dan Gohman
cabaec582f
Rename MRegisterInfo to TargetRegisterInfo.
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llvm-svn: 46930
2008-02-10 18:45:23 +00:00
Dan Gohman
522401f26e
Add explicit keywords.
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llvm-svn: 46506
2008-01-29 11:36:12 +00:00
Chris Lattner
d3a396668c
provide def_* and use_* iterators in addition to reg_* iterators.
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The first only returns definitions of a register, the second only
returns uses, the third returns both.
llvm-svn: 45803
2008-01-10 01:01:27 +00:00
Chris Lattner
6c74a2cbcb
don't access element zero of an array of size zero.
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llvm-svn: 45526
2008-01-03 01:25:31 +00:00
Chris Lattner
490a9681cb
switch the register iterator to act more like hte LLVM value iterator: dereferencing
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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
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instruction that defines the specified vreg. Crazy.
llvm-svn: 45480
2008-01-01 03:07:29 +00:00
Chris Lattner
73f957d96f
add efficient iteration support for register use/def's
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within a machine function.
llvm-svn: 45479
2008-01-01 02:55:32 +00:00
Chris Lattner
39b56ec51b
Implement automatically updated def/use lists for all MachineInstr register
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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
96167aa93c
Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
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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
