Commit Graph

2 Commits

Author SHA1 Message Date
Bill Seurer 1baeeb029b [PowerPC]Update Power VSX test cases to also test fast-isel
Update of some of the VSX test cases for Power to check fast-isel codegen as well as the regular codegen.

http://reviews.llvm.org/D6357

llvm-svn: 223509
2014-12-05 20:32:05 +00:00
Hal Finkel 19be506a5e [PowerPC] Add subregister classes for f64 VSX values
We had stored both f64 values and v2f64, etc. values in the VSX registers. This
worked, but was suboptimal because we would always spill 16-byte values even
through we almost always had scalar 8-byte values. This resulted in an
increase in stack-size use, extra memory bandwidth, etc. To fix this, I've
added 64-bit subregisters of the Altivec registers, and combined those with the
existing scalar floating-point registers to form a class of VSX scalar
floating-point registers. The ABI code has also been enhanced to use this
register class and some other necessary improvements have been made.

llvm-svn: 205075
2014-03-29 05:29:01 +00:00