Re: [PATCH 0/6] LLVMLinux: Patches to enable the kernel to be compiled with clang/LLVM

[Nicolas Pitre]

On Tue, 8 Jul 2014, behanw@xxxxxxxxxxxxxxxxxx wrote:

> From: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx>
> 
> The LLVMLinux project aims to fully build the Linux kernel using both gcc and
> clang (the C front end for the LLVM compiler infrastructure project). 
> 
> Clang only supports global named registers for non-allocatable registers like
> the stack pointer. By centralizing the definition of current_stack_pointer, the
> use of named registers for ARM remains largely unchanged while working for both
> gcc and clang.

You verified that the compiled code is identical on gcc?  If so:

Acked-by: Nicolas Pitre <nico@xxxxxxxxxx>

> 
> Behan Webster (6):
>   arm: LLVMLinux: Add global named register current_stack_pointer for
>     ARM
>   arm: LLVMLinux: Use current_stack_pointer to calculate pt_regs address
>   arm: LLVMLinux: Use current_stack_pointer for return_address
>   arm: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk
>   arm: LLVMLinux: Calculate current_thread_info from
>     current_stack_pointer
>   arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace
> 
>  arch/arm/include/asm/ptrace.h      | 5 ++---
>  arch/arm/include/asm/thread_info.h | 9 +++++++--
>  arch/arm/kernel/return_address.c   | 3 +--
>  arch/arm/kernel/stacktrace.c       | 4 +---
>  arch/arm/kernel/unwind.c           | 3 +--
>  5 files changed, 12 insertions(+), 12 deletions(-)
> 
> -- 
> 1.9.1
> 
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