Commit Graph

2 Commits

Author SHA1 Message Date
Jonas Paulsson 34bead750c [SystemZ] Use VGM whenever possible to load FP immediates.
isFPImmLegal() has been extended to recognize certain FP immediates that can
be built with VGM (Vector Generate Mask).

These scalar FP immediates (that were previously loaded from the constant
pool) are now selected as VGMF/VGMG in Select().

Review: Ulrich Weigand
https://reviews.llvm.org/D58003

llvm-svn: 353867
2019-02-12 18:06:06 +00:00
Krzysztof Parzyszek 46ce441df6 [RegAlloc] Check that subreg liveness tracking applies to given virtual reg
Subregister liveness applies selectively to register classes with certain
properties. Make sure that when it's enabled, it applies to a given virtual
register (in virtual register rewriter).

llvm-svn: 339784
2018-08-15 16:07:47 +00:00