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5 Commits

Author SHA1 Message Date
Matt Arsenault
7c29915da6 CodeGen: Allow verifier to run after MachineBlockPlacement 
No tests break with this enabled.

llvm-svn: 272340
 2016-06-09 23:31:55 +00:00
Matthias Braun
fe00b0505d CodeGen: Refactor renameDisconnectedComponents() as a pass 
Refactor LiveIntervals::renameDisconnectedComponents() to be a pass.
Also change the name to "RenameIndependentSubregs":

- renameDisconnectedComponents() worked on a MachineFunction at a time
  so it is a natural candidate for a machine function pass.

- The algorithm is testable with a .mir test now.

- This also fixes a problem where the lazy renaming as part of the
  MachineScheduler introduced IMPLICIT_DEF instructions after the number
  of a nodes in a region were counted leading to a mismatch.

Differential Revision: http://reviews.llvm.org/D20507

llvm-svn: 271345
 2016-05-31 22:38:06 +00:00
Derek Schuff
6435e10dbd Factor PrologEpilogInserter around spilling, frame finalization, and scavenging 
PrologEpilogInserter has these 3 phases, which are related, but not
all of them are needed by all targets. This patch reorganizes PEI's
varous functions around those phases for more clear separation. It also
introduces a new TargetMachine hook, usesPhysRegsForPEI, which is true
for non-virtual targets. When it is true, all the phases operate as
before, and PEI requires the AllVRegsAllocated property on
MachineFunctions. Otherwise, CSR spilling and scavenging are skipped and
only prolog/epilog insertion/frame finalization is done.

Differential Revision: http://reviews.llvm.org/D18366

llvm-svn: 269750
 2016-05-17 08:49:59 +00:00
Matthias Braun
298c8c892c TargetPassConfig: Set PrintMachineCode even if addMachinePasses() does not run. 
llvm-svn: 269013
 2016-05-10 04:51:04 +00:00
Matthias Braun
556abb392a CodeGen: Move TargetPassConfig from Passes.h to an own header; NFC 
Many files include Passes.h but only a fraction needs to know about the
TargetPassConfig class. Move it into an own header. Also rename
Passes.cpp to TargetPassConfig.cpp while we are at it.

llvm-svn: 269011
 2016-05-10 03:21:59 +00:00