Commit Graph

2 Commits

Author SHA1 Message Date
Derek Schuff 1aaf87e91d 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
Dan Gohman 10e730a263 [WebAssembly] Initial WebAssembly backend
This WebAssembly backend is just a skeleton at this time and is not yet
functional.

llvm-svn: 241022
2015-06-29 23:51:55 +00:00