[nvptx] Move PTX_CTA_SIZE up

Move the defition of PTX_CTA_SIZE up in nvptx.c.

2019-01-11  Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (PTX_CTA_SIZE): Move up.

From-SVN: r267837

gcc/ChangeLog

+2019-01-11  Tom de Vries  <tdevries@suse.de>
+
+	* config/nvptx/nvptx.c (PTX_CTA_SIZE): Move up.
+
 2019-01-11  Jan Beulich  <jbeulich@suse.com>
 
 	* config/i386/i386.md (rex64suffix): Add L suffix for SI.

gcc/config/nvptx/nvptx.c

@@ -82,17 +82,18 @@
 #define WORKAROUND_PTXJIT_BUG_2 1
 #define WORKAROUND_PTXJIT_BUG_3 1
 
+/* The PTX concept CTA (Concurrent Thread Array) maps on the CUDA concept thread
+   block, which has had a maximum number of threads of 1024 since CUDA version
+   2.x.  */
+#define PTX_CTA_SIZE 1024
+
 #define PTX_WARP_SIZE 32
+
 #define PTX_DEFAULT_VECTOR_LENGTH PTX_WARP_SIZE
 #define PTX_MAX_VECTOR_LENGTH PTX_WARP_SIZE
 #define PTX_WORKER_LENGTH 32
 #define PTX_DEFAULT_RUNTIME_DIM 0 /* Defer to runtime.  */
 
-/* The PTX concept CTA (Concurrent Thread Array) maps on the CUDA concept thread
-   block, which has had a maximum number of threads of 1024 since CUDA version
-   2.x.  */
-#define PTX_CTA_SIZE 1024
-
 /* The various PTX memory areas an object might reside in.  */
 enum nvptx_data_area
 {