Commit Graph

1 Commits

Author SHA1 Message Date
Reid Kleckner 93fc520339 [X86] Put no-op ADJCALLSTACK markers around all dynamic lowerings
Summary:
These ADJCALLSTACK markers don't generate code, but they keep dynamic
alloca code that calls chkstk out of the prologue.

This slightly pessimizes inalloca calls by preventing some register copy
coalescing, but I can live with that.

Reviewers: qcolombet

Subscribers: hans, llvm-commits

Differential Revision: http://reviews.llvm.org/D15200

llvm-svn: 254645
2015-12-03 20:46:59 +00:00