Dan Gohman
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b382c4dc23
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Fix a subtle bug in DeadMachineInstructionElim's liveness
computation. A def of a register doesn't necessarily kill
live super-registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57614 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-10-16 00:11:23 +00:00 |
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Dan Gohman
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d735b8019b
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Switch the MachineOperand accessors back to the short names like
isReg, etc., from isRegister, etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-10-03 15:45:36 +00:00 |
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Dan Gohman
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723ac3720f
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Add debug output to this pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56602 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-25 01:06:50 +00:00 |
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Dan Gohman
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3d84a76917
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Refactor the logic for testing if an instruction is dead into a
separate method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56531 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-24 00:27:38 +00:00 |
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Dan Gohman
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035268eaf7
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Set SetStore to false, to allow this pass to delete
dead loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56529 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-24 00:07:08 +00:00 |
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Dan Gohman
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b2c3e3fdd9
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Now that DeadMachineInstructionElim is basically working
correctly, it's not necessary to explicitly remove registers
from their use-def lists.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56509 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-23 22:04:18 +00:00 |
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Dan Gohman
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8468d1a845
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Track local physical register liveness. This is not the most
efficient implementation possible, but it's pretty simple and
good enough for the time being.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56504 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-23 21:40:44 +00:00 |
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Dan Gohman
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e251b1529f
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Don't consider instructions with implicit physical register
defs to be necessarily live.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56310 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-18 18:22:32 +00:00 |
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Dan Gohman
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d3ead4329e
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Add a new MachineInstr-level DCE pass. It is very simple, and is intended to
be used with fast-isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56268 91177308-0d34-0410-b5e6-96231b3b80d8
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2008-09-17 00:43:24 +00:00 |
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