nvptx: forward '-v' command-line option to assembler

For example, for offloading compilation with '-save-temps -v', before vs. after
word-diff then looks like:

    [...]
     [...]/build-gcc-offload-nvptx-none/gcc/as {+-v -v+} -o ./a.xnvptx-none.mkoffload.o ./a.xnvptx-none.mkoffload.s
    {+Verifying sm_30 code with sm_35 code generation.+}
    {+ ptxas -c -o /dev/null ./a.xnvptx-none.mkoffload.o --gpu-name sm_35 -O0+}
    [...]

(This depends on <https://github.com/MentorEmbedded/nvptx-tools/pull/37>
"Put '-v' verbose output onto stderr instead of stdout".)

	gcc/
	* config/nvptx/nvptx.h (ASM_SPEC): Define.

diff --git a/gcc/config/nvptx/nvptx.h b/gcc/config/nvptx/nvptx.h
index dc9cad1aaaf829f15578533b02c928e19e17cfc6..0b0170d77b3570b94bee5180bc62773e09ab7266 100644 (file)
--- a/gcc/config/nvptx/nvptx.h
+++ b/gcc/config/nvptx/nvptx.h
@@ -27,6 +27,10 @@
 
 /* Run-time Target.  */
 
+/* Assembler supports '-v' option; handle similar to
+   '../../gcc.cc:asm_options', 'HAVE_GNU_AS'.  */
+#define ASM_SPEC "%{v}"
+
 #define STARTFILE_SPEC "%{mmainkernel:crt0.o}"
 
 #define TARGET_CPU_CPP_BUILTINS() nvptx_cpu_cpp_builtins ()