Index: lib/Driver/Tools.cpp =================================================================== --- lib/Driver/Tools.cpp +++ lib/Driver/Tools.cpp @@ -718,6 +718,10 @@ } else if (KernelOrKext && (!Triple.isiOS() || Triple.isOSVersionLT(6))) { Features.push_back("+long-calls"); } + + // The kext linker doesn't know how to deal with movw/movt. + if (KernelOrKext) + Features.push_back("+dont-use-movt"); } void Clang::AddARMTargetArgs(const ArgList &Args, ArgStringList &CmdArgs, @@ -793,10 +797,6 @@ if (KernelOrKext) { CmdArgs.push_back("-backend-option"); CmdArgs.push_back("-arm-strict-align"); - - // The kext linker doesn't know how to deal with movw/movt. - CmdArgs.push_back("-backend-option"); - CmdArgs.push_back("-arm-use-movt=0"); } // -mkernel implies -mstrict-align; don't add the redundant option. Index: test/CodeGen/arm-dont-use-movt.c =================================================================== --- /dev/null +++ test/CodeGen/arm-dont-use-movt.c @@ -0,0 +1,7 @@ +// RUN: %clang_cc1 -triple thumbv7-apple-ios5 -target-feature +dont-use-movt -emit-llvm -o - %s | FileCheck -check-prefix=DONT-USE-MOVT %s +// RUN: %clang_cc1 -triple thumbv7-apple-ios5 -emit-llvm -o - %s | FileCheck -check-prefix=USE-MOVT %s + +// DONT-USE-MOVT: attributes #0 = { {{.*}} "target-features"="+dont-use-movt" +// USE-MOVT-NOT: attributes #0 = { {{.*}} "target-features"="+dont-use-movt" + +int foo1(int a) { return a; } Index: test/Driver/arm-dont-use-movt.c =================================================================== --- /dev/null +++ test/Driver/arm-dont-use-movt.c @@ -0,0 +1,9 @@ +// RUN: %clang -target armv7-apple-darwin -### %s 2>&1 \ +// RUN: | FileCheck %s -check-prefix CHECK-DEFAULT + +// RUN: %clang -target armv7-apple-darwin -mkernel -### %s 2>&1 \ +// RUN: | FileCheck %s -check-prefix CHECK-KERNEL + +// CHECK-DEFAULT-NOT: "-target-feature" "+dont-use-movt" + +// CHECK-KERNEL: "-target-feature" "+dont-use-movt"