commit dbc2732e361e358835cef3a1239fcec0e972282b
author Dan Gohman <dan433584@gmail.com> Thu Jan 28 01:22:44 2016 +0000
committer Dan Gohman <dan433584@gmail.com> Thu Jan 28 01:22:44 2016 +0000
tree 0d0e43b911552c4467a4f0986797a5239786c61a
parent 134d29444d8d8fb692549a38acd63069d2bf8d82

[WebAssembly] Enhanced register stackification

This patch revamps the RegStackifier pass with a new tree traversal mechanism,
enabling three major new features:

 - Stackification of values with multiple uses, using the result value of set_local
 - More aggressive stackification of instructions with side effects
 - Reordering operands in commutative instructions to enable more stackification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259009 91177308-0d34-0410-b5e6-96231b3b80d8