Driver/ARM: Match GCC behavior in that -msoft-float disables NEON, despite this
not being consistent at all with other parts of the GCC implementation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127777 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 271f02d..761e5f8 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -583,6 +583,13 @@
} else
D.Diag(clang::diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
+
+ // Setting -msoft-float effectively disables NEON because of the GCC
+ // implementation, although the same isn't true of VFP or VFP3.
+ if (FloatABI == "soft") {
+ CmdArgs.push_back("-target-feature");
+ CmdArgs.push_back("-neon");
+ }
}
void Clang::AddMIPSTargetArgs(const ArgList &Args,
diff --git a/test/Driver/clang-translation.c b/test/Driver/clang-translation.c
index 2464f03..b2b358f 100644
--- a/test/Driver/clang-translation.c
+++ b/test/Driver/clang-translation.c
@@ -31,6 +31,8 @@
// ARMV7_SOFTFLOAT: "-cc1"
// ARMV7_SOFTFLOAT: "-msoft-float"
// ARMV7_SOFTFLOAT: "-mfloat-abi" "soft"
+// ARMV7_SOFTFLOAT: "-target-feature"
+// ARMV7_SOFTFLOAT: "-neon"
// ARMV7_SOFTFLOAT: "-x" "c"
// RUN: %clang -ccc-host-triple x86_64-apple-darwin10 -### -S %s 2> %t.log \