Driver/Darwin/ARM: Kernel/kext code has more strict alignment requirements.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 761e5f8..09a1442 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -420,7 +420,8 @@
}
void Clang::AddARMTargetArgs(const ArgList &Args,
- ArgStringList &CmdArgs) const {
+ ArgStringList &CmdArgs,
+ bool KernelOrKext) const {
const Driver &D = getToolChain().getDriver();
llvm::Triple Triple = getToolChain().getTriple();
@@ -587,8 +588,17 @@
// 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");
+ CmdArgs.push_back("-target-feature");
+ CmdArgs.push_back("-neon");
+ }
+
+ // Kernel code has more strict alignment requirements.
+ if (KernelOrKext) {
+ CmdArgs.push_back("-target-feature");
+ CmdArgs.push_back("-arm-long-calls");
+
+ CmdArgs.push_back("-target-feature");
+ CmdArgs.push_back("-arm-strict-align");
}
}
@@ -1173,7 +1183,7 @@
case llvm::Triple::arm:
case llvm::Triple::thumb:
- AddARMTargetArgs(Args, CmdArgs);
+ AddARMTargetArgs(Args, CmdArgs, KernelOrKext);
break;
case llvm::Triple::mips: