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| author | Clement Courbet <courbet@google.com> | 2018-11-09 09:49:06 +0000 |
|---|---|---|
| committer | Clement Courbet <courbet@google.com> | 2018-11-09 09:49:06 +0000 |
| commit | e6b727e552844168c53ca1aff9c87b196f221a23 (patch) | |
| tree | 6b2a2ad728fcef405b457389c3fd2b23463e1629 /llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h | |
| parent | fa9cf897347c456313834672a54386baca2e8b77 (diff) | |
| download | bcm5719-llvm-e6b727e552844168c53ca1aff9c87b196f221a23.tar.gz bcm5719-llvm-e6b727e552844168c53ca1aff9c87b196f221a23.zip | |
[X86] Fix VZEROUPPER scheduling info on SNB,HSW,BDW,SXL,SKX.
Summary:
Starting from SNB, VZEROUPPER is handled by the renamer and uses no proc resources.
After HSW, it also has zero latency.
This fixes PR35606.
To reproduce:
Uops:
llvm-exegesis -mode=uops -opcode-name=VZEROUPPER
Latency:
echo -e '#LLVM-EXEGESIS-DEFREG XMM0 1\n#LLVM-EXEGESIS-DEFREG XMM1 1\nvzeroupper' | /tmp/llvm-exegesis -mode=latency -snippets-file=-
echo -e '#LLVM-EXEGESIS-DEFREG XMM0 1\n#LLVM-EXEGESIS-DEFREG XMM1 1\nvzeroupper\naddps %xmm0, %xmm1' | /tmp/llvm-exegesis -mode=latency -snippets-file=-
Reviewers: RKSimon, craig.topper, andreadb
Subscribers: gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D54107
llvm-svn: 346482
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h')
0 files changed, 0 insertions, 0 deletions
