Nick Lewycky
2b8400628d
Remove includes of Support/Compiler.h that are no longer needed after the
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VISIBILITY_HIDDEN removal.
llvm-svn: 85043
2009-10-25 06:57:41 +00:00
Nick Lewycky
711c726c97
Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.
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Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.
llvm-svn: 85042
2009-10-25 06:33:48 +00:00
Dan Gohman
5bfc2416fe
Factor out LiveIntervalAnalysis' code to determine whether an instruction
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is trivially rematerializable and integrate it into
TargetInstrInfo::isTriviallyReMaterializable. This way, all places that
need to know whether an instruction is rematerializable will get the
same answer.
This enables the useful parts of the aggressive-remat option by
default -- using AliasAnalysis to determine whether a memory location
is invariant, and removes the questionable parts -- rematting operations
with virtual register inputs that may not be live everywhere.
llvm-svn: 83687
2009-10-09 23:27:56 +00:00
Bill Wendling
d197f257a7
Convert DOUT to DEBUG(errs()...).
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llvm-svn: 79748
2009-08-22 20:04:03 +00:00
Dan Gohman
abb3e2d240
Add const qualifiers.
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llvm-svn: 78663
2009-08-11 15:13:43 +00:00
Dan Gohman
3526f97d13
Rename AliasSet to SubRegs, to reflect changes in the surrounding code.
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llvm-svn: 57618
2008-10-16 01:06:18 +00:00
Dan Gohman
8075c32a55
Fix a subtle bug in DeadMachineInstructionElim's liveness
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computation. A def of a register doesn't necessarily kill
live super-registers.
llvm-svn: 57614
2008-10-16 00:11:23 +00:00
Dan Gohman
30c5ce1b7d
Switch the MachineOperand accessors back to the short names like
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isReg, etc., from isRegister, etc.
llvm-svn: 57006
2008-10-03 15:45:36 +00:00
Dan Gohman
32c4066d62
Add debug output to this pass.
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llvm-svn: 56602
2008-09-25 01:06:50 +00:00
Dan Gohman
a7a04d8ae6
Refactor the logic for testing if an instruction is dead into a
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separate method.
llvm-svn: 56531
2008-09-24 00:27:38 +00:00
Dan Gohman
49becd6c31
Set SetStore to false, to allow this pass to delete
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dead loads.
llvm-svn: 56529
2008-09-24 00:07:08 +00:00
Dan Gohman
583938816c
Now that DeadMachineInstructionElim is basically working
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correctly, it's not necessary to explicitly remove registers
from their use-def lists.
llvm-svn: 56509
2008-09-23 22:04:18 +00:00
Dan Gohman
3242b7c44c
Track local physical register liveness. This is not the most
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efficient implementation possible, but it's pretty simple and
good enough for the time being.
llvm-svn: 56504
2008-09-23 21:40:44 +00:00
Dan Gohman
9dc56fbe40
Don't consider instructions with implicit physical register
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defs to be necessarily live.
llvm-svn: 56310
2008-09-18 18:22:32 +00:00
Dan Gohman
d0c6cb65e8
Add a new MachineInstr-level DCE pass. It is very simple, and is intended to
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be used with fast-isel.
llvm-svn: 56268
2008-09-17 00:43:24 +00:00
