[ARM] 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 renames FeatureSpecRestrict to FeatureSB.
Reviewed By: olista01, LukeCheeseman
Differential Revision: https://reviews.llvm.org/D55990
llvm-svn: 350299
diff --git a/llvm/unittests/Support/TargetParserTest.cpp b/llvm/unittests/Support/TargetParserTest.cpp
index 7fc51ae..3676dee 100644
--- a/llvm/unittests/Support/TargetParserTest.cpp
+++ b/llvm/unittests/Support/TargetParserTest.cpp
@@ -584,7 +584,8 @@
{"iwmmxt", "noiwmmxt", nullptr, nullptr},
{"iwmmxt2", "noiwmmxt2", nullptr, nullptr},
{"maverick", "maverick", nullptr, nullptr},
- {"xscale", "noxscale", nullptr, nullptr}};
+ {"xscale", "noxscale", nullptr, nullptr},
+ {"sb", "nosb", "+sb", "-sb"}};
for (unsigned i = 0; i < array_lengthof(ArchExt); i++) {
EXPECT_EQ(StringRef(ArchExt[i][2]), ARM::getArchExtFeature(ArchExt[i][0]));