David Blaikie
06ecc99a56
More dead code removal (using -Wunreachable-code)
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llvm-svn: 148578
2012-01-20 21:51:11 +00:00
Evan Cheng
91ae428cc0
Mix some minor misuse of MachineBasicBlock iterator.
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llvm-svn: 145903
2011-12-06 02:49:06 +00:00
Bob Wilson
776d3dcfb4
Fix PR7096. When a block containing multiple defs is tail duplicated, the
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SSAUpdater for the value from the first def may see uses of undefined values,
because the later defs will not have been updated yet.
llvm-svn: 103407
2010-05-10 17:14:26 +00:00
Bob Wilson
e81252b747
Combine the implementations of the core part of the SSAUpdater and
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MachineSSAUpdater to avoid duplicating all the code.
llvm-svn: 103060
2010-05-04 23:18:19 +00:00
Bob Wilson
01b2bccb00
Update MachineSSAUpdater with the same changes I made for the IR-level
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SSAUpdater. I'm going to try to refactor this to share most of the code
between them.
llvm-svn: 102353
2010-04-26 17:40:49 +00:00
Chris Lattner
0da97990f6
stop using DebugLoc::getUnknownLoc()
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llvm-svn: 100215
2010-04-02 20:17:23 +00:00
Chris Lattner
750bf54fc6
fix missing #includes.
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llvm-svn: 95745
2010-02-10 01:17:36 +00:00
Chris Lattner
7acf9be6c4
move target-independent opcodes out of TargetInstrInfo
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into TargetOpcodes.h. #include the new TargetOpcodes.h
into MachineInstr. Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the
codebase.
llvm-svn: 95687
2010-02-09 19:54:29 +00:00
David Greene
020c436572
Change errs() to dbgs().
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llvm-svn: 92548
2010-01-05 00:10:05 +00:00
Evan Cheng
58a787bc55
Watch out for duplicated PHI instructions.
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llvm-svn: 90816
2009-12-07 23:11:03 +00:00
Evan Cheng
79d3b53208
Pre-regalloc tale duplication. Work in progress.
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llvm-svn: 90759
2009-12-07 10:15:19 +00:00
Evan Cheng
2a99985e86
If BB is empty, insert PHI before end() instead of front().
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llvm-svn: 90744
2009-12-07 03:07:01 +00:00
Evan Cheng
30aa0aa350
Don't try to be cute with undef optimization here. Let ProcessImplicitDefs handle it.
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llvm-svn: 90566
2009-12-04 09:23:37 +00:00
Evan Cheng
0f151e89ab
- If the reaching definition is an undef and the use is a PHI, add the implicit_def to the end of the source block.
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- When reaching value is replaced with another, update the cache as well.
llvm-svn: 90501
2009-12-04 00:09:05 +00:00
Evan Cheng
73dcaa14fa
Handle undef values properly.
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llvm-svn: 90489
2009-12-03 21:51:55 +00:00
Evan Cheng
1c3edb4fa8
Fill out codegen SSA updater. It's not yet tested.
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llvm-svn: 90395
2009-12-03 02:31:43 +00:00
Evan Cheng
e573096db2
Skeleton for MachineInstr level SSA updater.
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llvm-svn: 90353
2009-12-02 22:02:52 +00:00
