[SystemZ]  Increase the amount of inlining.

Implement getInliningThresholdMultiplier() and have it return 3.

Review: Ulrich Weigand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@339563 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed