[PATCH] D55921: [AArch64] Add command-line option for SB

[Diogo N. Sampaio via Phabricator via llvm-commits]

dnsampaio created this revision.
dnsampaio added reviewers: pbarrio, olista01.
Herald added subscribers: llvm-commits, kristina, kristof.beyls, javed.absar.

SB (Speculative Barrier) is only mandatory from 8.5
onwards but is optional from Armv8.0-A. This patch adds a command
line option to enable SB, as it was previously only possible to
enable by selecting -march=armv8.5-a.

This patch also removes the FeatureSB from the previous FeatureSpecRestrict.

Similar patch upstream in GNU binutils:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=68dfbb92ef5f013a315d652c88ede2082c16a88e


Repository:
  rL LLVM

https://reviews.llvm.org/D55921

Files:
  include/llvm/Support/AArch64TargetParser.def
  include/llvm/Support/AArch64TargetParser.h
  lib/Target/AArch64/AArch64.td
  lib/Target/AArch64/AArch64InstrInfo.td
  lib/Target/AArch64/AArch64Subtarget.h
  test/MC/AArch64/armv8.5a-sb.s
  test/MC/AArch64/armv8.5a-specctrl.s
  test/MC/Disassembler/AArch64/armv8.5a-sb.txt
  test/MC/Disassembler/AArch64/armv8.5a-specctrl.txt
  unittests/Support/TargetParserTest.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D55921.179042.patch
Type: text/x-patch
Size: 6814 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20181220/2c0e4802/attachment.bin>