[PATCH] D104853: [X86] Add description of FXAM instruction

[Serge Pavlov via Phabricator via llvm-commits]

sepavloff created this revision.
sepavloff added reviewers: craig.topper, lebedev.ri, pengfei, RKSimon, andreadb.
Herald added subscribers: gbedwell, hiraditya.
sepavloff requested review of this revision.
Herald added a project: LLVM.

Previously this instruction could be used only in assembler. This change
makes it available for compiler also. Scheduling information was copied
from FTST instruction, hopefully this can be a satisfactory approximation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104853

Files:
  llvm/lib/Target/X86/X86FloatingPoint.cpp
  llvm/lib/Target/X86/X86InstrFPStack.td
  llvm/lib/Target/X86/X86SchedHaswell.td
  llvm/lib/Target/X86/X86ScheduleAtom.td
  llvm/lib/Target/X86/X86ScheduleZnver1.td
  llvm/lib/Target/X86/X86ScheduleZnver2.td
  llvm/test/tools/llvm-mca/X86/Barcelona/resources-x87.s
  llvm/test/tools/llvm-mca/X86/BdVer2/resources-x87.s
  llvm/test/tools/llvm-mca/X86/Broadwell/resources-x87.s
  llvm/test/tools/llvm-mca/X86/BtVer2/resources-x87.s
  llvm/test/tools/llvm-mca/X86/Generic/resources-x87.s
  llvm/test/tools/llvm-mca/X86/SLM/resources-x87.s
  llvm/test/tools/llvm-mca/X86/SandyBridge/resources-x87.s
  llvm/test/tools/llvm-mca/X86/SkylakeClient/resources-x87.s
  llvm/test/tools/llvm-mca/X86/SkylakeServer/resources-x87.s
  llvm/test/tools/llvm-mca/X86/Znver3/resources-x87.s

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