commit 87c3b54a36280798828e43f4d4bde0fc3b70482a
author Eli Friedman <efriedma@codeaurora.org> Wed Jul 11 23:26:35 2018 +0000
committer Eli Friedman <efriedma@codeaurora.org> Wed Jul 11 23:26:35 2018 +0000
tree 4fe5fbd9e5997b9573db3299dad87fe17b0d9c9b
parent 99a2c222c24aee6f7d84f9e8422c6ccdb91972dd

[CodeGen] Emit more precise AssertZext/AssertSext nodes.

This is marginally helpful for removing redundant extensions, and the
code is easier to read, so it seems like an all-around win. In the new
test i8-phi-ext.ll, we used to emit an AssertSext i8; now we emit an
AssertZext i2, which allows the extension of the return value to be
eliminated.

Differential Revision: https://reviews.llvm.org/D49004



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336868 91177308-0d34-0410-b5e6-96231b3b80d8