[PATCH] D47585: [X86] Introduce WriteFLDC for x87 constant loads.

[Clement Courbet via Phabricator via llvm-commits]

courbet created this revision.
courbet added reviewers: RKSimon, craig.topper.
Herald added a subscriber: gbedwell.
Herald added a reviewer: andreadb.

{FLDL2E, FLDL2T, FLDLG2, FLDLN2, FLDPI} were using WriteMicrocoded.

- I've measured the values for Broadwell, Haswell, SandyBridge, Skylake.
- For ZnVer1 and Atom, values were transferred form InstRWs.
- For SLM and BtVer2, I've guessed some values :(


Repository:
  rL LLVM

https://reviews.llvm.org/D47585

Files:
  lib/Target/X86/X86InstrFPStack.td
  lib/Target/X86/X86SchedBroadwell.td
  lib/Target/X86/X86SchedHaswell.td
  lib/Target/X86/X86SchedSandyBridge.td
  lib/Target/X86/X86SchedSkylakeClient.td
  lib/Target/X86/X86SchedSkylakeServer.td
  lib/Target/X86/X86Schedule.td
  lib/Target/X86/X86ScheduleAtom.td
  lib/Target/X86/X86ScheduleBtVer2.td
  lib/Target/X86/X86ScheduleSLM.td
  lib/Target/X86/X86ScheduleZnver1.td
  test/CodeGen/X86/x87-schedule.ll
  test/tools/llvm-mca/X86/Broadwell/resources-x87.s
  test/tools/llvm-mca/X86/BtVer2/resources-x87.s
  test/tools/llvm-mca/X86/Haswell/resources-x87.s
  test/tools/llvm-mca/X86/SLM/resources-x87.s
  test/tools/llvm-mca/X86/SandyBridge/resources-x87.s
  test/tools/llvm-mca/X86/SkylakeClient/resources-x87.s
  test/tools/llvm-mca/X86/SkylakeServer/resources-x87.s

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D47585.149277.patch
Type: text/x-patch
Size: 35912 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180531/9a36d3c5/attachment.bin>