Get rid of the EdgeMapping map. Instead, just check for BasicBlock
changes before doing phi lowering for switches.

llvm-svn: 102809

As a temporary workaround for post-RA not handling DebugValue instructions,
just remove them all. Radar 7873207 (working around the root problem of
Radar 7759363).

llvm-svn: 101604

Remove a #include.

llvm-svn: 101043

Fix some more places where dbg_value affected codegen.

llvm-svn: 97765

Change errs() to dbgs().

llvm-svn: 92594

<rdar://problem/7453528>. Track only physical registers that are valid for the target.

llvm-svn: 90970

Don't hang on to pointers or references after vector::push_back.

The MO reference to a MachineOperand can be invalidated by
MachineInstr::addOperand. Don't even use it for debugging.

llvm-svn: 90381

Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks.

llvm-

Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks.

llvm-svn: 89471

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Allow target to specify regclass for which antideps will only be broken along the critical path.

llvm-svn: 88682

Rename registers to break output dependencies in addition to anti-dependencies.

llvm-svn: 87015

Fixed to address code review. No functional changes.

llvm-svn: 86634

Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies.

llvm-svn: 86628

Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies.

llvm-svn: 86098

Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed.

llvm-svn: 85939

Make -print-machineinstrs more readable.
- Be consistent when referring to MachineBasicBlocks: BB#0.
- Be consistent when referring to virtual registers: %reg1024.
- Be consistent when referring t

Make -print-machineinstrs more readable.
- Be consistent when referring to MachineBasicBlocks: BB#0.
- Be consistent when referring to virtual registers: %reg1024.
- Be consistent when referring to unknown physical registers: %physreg10.
- Be consistent when referring to known physical registers: %RAX
- Be consistent when referring to register 0: %reg0
- Be consistent when printing alignments: align=16
- Print jump table contents.
- Don't print host addresses, in general.
- and various other cleanups.

llvm-svn: 85682

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Make AntiDepReg.h internal.

llvm-svn: 85412

Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken.

llvm-svn: 85166

Define virtual destructor in *.cpp file.

llvm-svn: 85146

Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all.

llvm-svn: 85145

Break anti-dependence breaking out into its own class.

llvm-svn: 85127

Remove includes of Support/Compiler.h that are no longer needed after the
VISIBILITY_HIDDEN removal.

llvm-svn: 85043

Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit

Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.
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

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Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none.

llvm-svn: 84911

Revert r84658 and r84691. They were causing llvm-gcc bootstrap to fail.

llvm-svn: 84727

Respect src register allocation requirements when breaking anti-dependencies. Remove some dead code.

llvm-svn: 84691