diff options
| author | Artyom Skrobov <Artyom.Skrobov@arm.com> | 2017-04-23 06:58:08 +0000 |
|---|---|---|
| committer | Artyom Skrobov <Artyom.Skrobov@arm.com> | 2017-04-23 06:58:08 +0000 |
| commit | 53cf1897ccea18a5919e109cde61b29d16dd8fb9 (patch) | |
| tree | 33b7af4de530c2e04640e0c8cf03fc0f16f72d81 /llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 474e5de72de95414c883fc2759f8a75b20ee42be (diff) | |
| download | bcm5719-llvm-53cf1897ccea18a5919e109cde61b29d16dd8fb9.tar.gz bcm5719-llvm-53cf1897ccea18a5919e109cde61b29d16dd8fb9.zip | |
[ARM] ScheduleDAGRRList::DelayForLiveRegsBottomUp must consider OptionalDefs
Summary:
D30400 has enabled tADC and tSBC instructions to be unglued, thereby allowing CPSR to remain live between Thumb1 scheduling units.
Most Thumb1 instructions have an OptionalDef for CPSR; but the scheduler ignored the OptionalDefs, and could unwittingly insert a flag-setting instruction in between an ADDS and the corresponding ADC.
Reviewers: javed.absar, atrick, MatzeB, t.p.northover, jmolloy, rengolin
Reviewed By: javed.absar
Subscribers: rogfer01, efriedma, aemerson, rengolin, llvm-commits, MatzeB
Differential Revision: https://reviews.llvm.org/D31081
llvm-svn: 301106
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
0 files changed, 0 insertions, 0 deletions
