tree 42a48413a2d824638b3dd173defc901658ca60ed
parent 83a78f7584e801f09c7d4e3789a34254cb19fcff
author Zaara Syeda <syzaara@ca.ibm.com> 1517329042 +0000
committer Zaara Syeda <syzaara@ca.ibm.com> 1517329042 +0000

Re-commit : [PowerPC] Add handling for ColdCC calling convention and a pass to mark
candidates with coldcc attribute.

This recommits r322721 reverted due to sanitizer memory leak build bot failures.

Original commit message:
This patch adds support for the coldcc calling convention for Power.
This changes the set of non-volatile registers. It includes a pass to stress
test the implementation by marking all static directly called functions with
the coldcc attribute through the option -enable-coldcc-stress-test. It also
includes an option, -ppc-enable-coldcc, to add the coldcc attribute to
functions which are cold at all call sites based on BlockFrequencyInfo when
the containing function does not call any non cold functions.

Differential Revision: https://reviews.llvm.org/D38413

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@323778 91177308-0d34-0410-b5e6-96231b3b80d8