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| author | Oliver Stannard <oliver.stannard@arm.com> | 2018-09-27 16:09:05 +0000 |
|---|---|---|
| committer | Oliver Stannard <oliver.stannard@arm.com> | 2018-09-27 16:09:05 +0000 |
| commit | a4f68bf4adcd2cc3457a4028e7f0bf7eb89dc002 (patch) | |
| tree | a373fa615a4bf0a08a6fc24721d8ddf201a9d5b6 /llvm/lib | |
| parent | c3f50ff92e0f37484d3bef1d580ab0ceb54db733 (diff) | |
| download | bcm5719-llvm-a4f68bf4adcd2cc3457a4028e7f0bf7eb89dc002.tar.gz bcm5719-llvm-a4f68bf4adcd2cc3457a4028e7f0bf7eb89dc002.zip | |
[AArch64][v8.5A] Add speculation barriers SSBB and PSSBB
This adds two new barrier instructions which can be used to restrict
speculative execution of load instructions.
Patch by Pablo Barrio!
Differential revision: https://reviews.llvm.org/D52483
llvm-svn: 343229
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.td | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td index f6b798724d3..f424fa27f2f 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td @@ -650,6 +650,8 @@ def SB : SimpleSystemI<0, (ins), "sb", "">, Sched<[]> { def : InstAlias<"clrex", (CLREX 0xf)>; def : InstAlias<"isb", (ISB 0xf)>; +def : InstAlias<"ssbb", (DSB 0)>; +def : InstAlias<"pssbb", (DSB 4)>; def MRS : MRSI; def MSR : MSRI; |
