a15e7eb29b
LowerSubregs should not clobber any analysis.
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llvm-svn: 51933
2008-06-04 09:17:16 +00:00
d3d0ad3f58
Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.
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llvm-svn: 48412
2008-03-16 03:12:01 +00:00
dd55d3f1b2
Get rid of a pseudo instruction and replace it with subreg based operation on real instructions, ridding the asm printers of the hack used to do this previously. In the process, update LowerSubregs to be careful about eliminating copies that have side affects.
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Note: the coalescer will have to be careful about this too, when it starts coalescing insert_subreg nodes.
llvm-svn: 48329
2008-03-13 05:47:01 +00:00
aa7c2105de
Recommitting parts of r48130. These do not appear to cause the observed failures.
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llvm-svn: 48223
2008-03-11 10:09:17 +00:00
d54660aeed
Use TargetRegisterInfo::getPhysicalRegisterRegClass. Remove duplicated code.
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llvm-svn: 48221
2008-03-11 07:55:13 +00:00
d4e1d9eeb2
Revert 48125, 48126, and 48130 for now to unbreak some x86-64 tests.
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llvm-svn: 48167
2008-03-10 19:31:26 +00:00
4ba3f0430b
Allow insert_subreg into implicit, target-specific values.
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Change insert/extract subreg instructions to be able to be used in TableGen patterns.
Use the above features to reimplement an x86-64 pseudo instruction as a pattern.
llvm-svn: 48130
2008-03-10 06:12:08 +00:00
3a4be0fdef
Rename MRegisterInfo to TargetRegisterInfo.
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llvm-svn: 46930
2008-02-10 18:45:23 +00:00
7a73ae9a86
Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the
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Machine-level API cleanup instigated by Chris.
llvm-svn: 45470
2007-12-31 06:32:00 +00:00
a10fff51d9
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
f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
847d42a85c
isSubRegOf() is a dup of isSubRegister.
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llvm-svn: 43249
2007-10-23 06:51:50 +00:00
c1e4e3743b
Allow copyRegToReg to emit cross register classes copies.
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Tested with "make check"!
llvm-svn: 42346
2007-09-26 06:25:56 +00:00
9da02f5ee2
Remove isReg, isImm, and isMBB, and change all their users to use
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isRegister, isImmediate, and isMachineBasicBlock, which are equivalent,
and more popular.
llvm-svn: 41958
2007-09-14 20:33:02 +00:00
e081928f49
Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there.
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llvm-svn: 41005
2007-08-10 21:11:55 +00:00
2e5fb9f71e
Implement review feedback. No functionality change.
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llvm-svn: 40863
2007-08-06 16:33:56 +00:00
e9d738cefc
Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions.
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llvm-svn: 40521
2007-07-26 08:18:32 +00:00
Evan Cheng