Files
llvm/test/CodeGen/SystemZ
Matthias Braun c5e14e0478 RegScavenging: Add scavengeRegisterBackwards()
This is a variant of scavengeRegister() that works for
enterBasicBlockEnd()/backward(). The benefit of the backward mode is
that it is not affected by incomplete kill flags.

This patch also changes
PrologEpilogInserter::doScavengeFrameVirtualRegs() to use the register
scavenger in backwards mode.

Differential Revision: http://reviews.llvm.org/D21885

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276044 91177308-0d34-0410-b5e6-96231b3b80d8
2016-07-19 22:37:09 +00:00
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