llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-30 04:35:00 +00:00

History

Nadav Rotem 91e43fd17a When promoting integer vectors we often create ext-loads. This patch adds a

dag-combine optimization to implement the ext-load efficiently (using shuffles).

For example the type <4 x i8> is stored in memory as i32, but it needs to
find its way into a <4 x i32> register. Previously we scalarized the memory
access, now we use shuffles.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139995 91177308-0d34-0410-b5e6-96231b3b80d8

2011-09-18 10:39:32 +00:00

Analysis

This test only makes sense with -enable-iv-rewrite.

2011-09-13 02:45:26 +00:00