granicus.if.org Git - llvm/commit

author	Ulrich Weigand <ulrich.weigand@de.ibm.com>
	Tue, 16 Jul 2019 15:55:45 +0000 (15:55 +0000)
committer	Ulrich Weigand <ulrich.weigand@de.ibm.com>
	Tue, 16 Jul 2019 15:55:45 +0000 (15:55 +0000)
commit	a63177906c13ca763c9bf42baaca8cc2a1ea22c2
tree	4a6431619835688a795fab87427500f296d4fd29	tree \| snapshot
parent	f892f6959ebc24d5827c2e4baeb8f44bcd5ac4b5	commit \| diff

[Strict FP] Allow more relaxed scheduling

Reimplement scheduling constraints for strict FP instructions in
ScheduleDAGInstrs::buildSchedGraph to allow for more relaxed
scheduling. Specifially, allow one strict FP instruction to
be scheduled across another, as long as it is not moved across
any global barrier.

Differential Revision: https://reviews.llvm.org/D64412

Reviewed By: cameron.mcinally

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@366222 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/ScheduleDAGInstrs.cpp		diff \| blob \| history
test/CodeGen/SystemZ/fp-strict-alias.ll		diff \| blob \| history
test/CodeGen/SystemZ/vector-constrained-fp-intrinsics.ll		diff \| blob \| history