[AArch64] Add command-line option for SB
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 moves to FeatureSB the old FeatureSpecRestrict.
Reviewers: pbarrio, olista01, t.p.northover, LukeCheeseman
Differential Revision: https://reviews.llvm.org/D55921
llvm-svn: 350126
diff --git a/llvm/unittests/Support/TargetParserTest.cpp b/llvm/unittests/Support/TargetParserTest.cpp
index a6a6150..7fc51ae 100644
--- a/llvm/unittests/Support/TargetParserTest.cpp
+++ b/llvm/unittests/Support/TargetParserTest.cpp
@@ -988,7 +988,8 @@
{"rcpc", "norcpc", "+rcpc", "-rcpc" },
{"rng", "norng", "+rand", "-rand"},
{"memtag", "nomemtag", "+mte", "-mte"},
- {"ssbs", "nossbs", "+ssbs", "-ssbs"}};
+ {"ssbs", "nossbs", "+ssbs", "-ssbs"},
+ {"sb", "nosb", "+sb", "-sb"}};
for (unsigned i = 0; i < array_lengthof(ArchExt); i++) {
EXPECT_EQ(StringRef(ArchExt[i][2]),