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

..

llvm

Factor PrologEpilogInserter around spilling, frame finalization, and scavenging

2016-05-17 08:49:59 +00:00

llvm-c

ThinLTOCodeGenerator: ignore 0 values for the cache settings.

2016-05-09 05:16:30 +00:00