commit 8459d34e820b0461f0c8f95b1c5add84e089ff1e
author Oliver Stannard <oliver.stannard@arm.com> Thu Sep 27 14:05:46 2018 +0000
committer Oliver Stannard <oliver.stannard@arm.com> Thu Sep 27 14:05:46 2018 +0000
tree c5f012d7c4802c4c7fe1d76a2fc50d5d68eb8179
parent dc837e3f1f39aaff0f7c566602d03203d4b94fe4

[AArch64][v8.5A] Add speculation restriction system registers

This adds some new system registers which can be used to restrict
certain types of speculative execution.

Patch by Pablo Barrio and David Spickett!

Differential revision: https://reviews.llvm.org/D52482

llvm-svn: 343218

llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp

diff --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
index 5648c9f..d028cdc 100644
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -998,7 +998,8 @@
     if (!isSysReg()) return false;
     return (SysReg.PStateField == AArch64PState::PAN ||
             SysReg.PStateField == AArch64PState::DIT ||
-            SysReg.PStateField == AArch64PState::UAO);
+            SysReg.PStateField == AArch64PState::UAO ||
+            SysReg.PStateField == AArch64PState::SSBS);
   }
 
   bool isSystemPStateFieldWithImm0_15() const {