[Hexagon] Enable auto-vectorization only when -fvectorize was given
llvm-svn: 329923
diff --git a/clang/lib/Driver/ToolChains/Hexagon.cpp b/clang/lib/Driver/ToolChains/Hexagon.cpp
index 25a911f..6402a82 100644
--- a/clang/lib/Driver/ToolChains/Hexagon.cpp
+++ b/clang/lib/Driver/ToolChains/Hexagon.cpp
@@ -520,6 +520,13 @@
CC1Args.push_back("-target-feature");
CC1Args.push_back("+reserved-r19");
}
+ if (Arg *A = DriverArgs.getLastArg(options::OPT_fvectorize,
+ options::OPT_fno_vectorize)) {
+ if (A->getOption().matches(options::OPT_fvectorize)) {
+ CC1Args.push_back("-mllvm");
+ CC1Args.push_back("-hexagon-autohvx");
+ }
+ }
}
void HexagonToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
diff --git a/clang/test/Driver/hexagon-vectorize.c b/clang/test/Driver/hexagon-vectorize.c
new file mode 100644
index 0000000..d6a537e
--- /dev/null
+++ b/clang/test/Driver/hexagon-vectorize.c
@@ -0,0 +1,7 @@
+// RUN: %clang -target hexagon -### %s 2>&1 | FileCheck %s --check-prefix=CHECK-DEFAULT
+// RUN: %clang -target hexagon -fvectorize -### %s 2>&1 | FileCheck %s --check-prefix=CHECK-VECTOR
+// RUN: %clang -target hexagon -fvectorize -fno-vectorize -### %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOVECTOR
+
+// CHECK-DEFAULT-NOT: hexagon-autohvx
+// CHECK-VECTOR: "-mllvm" "-hexagon-autohvx"
+// CHECK-NOVECTOR-NOT: hexagon-autohvx