[nvptx] Add PTX_CTA_SIZE

2018-12-19 Tom de Vries <tdevries@suse.de> * config/nvptx/nvptx.c (PTX_CTA_SIZE): Define. From-SVN: r267281

[nvptx] Add PTX_CTA_SIZE
2018-12-19 Tom de Vries <tdevries@suse.de> * config/nvptx/nvptx.c (PTX_CTA_SIZE): Define. From-SVN: r267281
c4686fa9 · Tom de Vries · Tom de Vries · 7c67ff4a · c4686fa9 · c4686fa9
Commit c4686fa9 authored Dec 19, 2018 by Tom de Vries Committed by Tom de Vries Dec 19, 2018
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gcc/config/nvptx/nvptx.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 2018-12-19  Tom de Vries  <tdevries@suse.de>

+	* config/nvptx/nvptx.c (PTX_CTA_SIZE): Define.
+
+2018-12-19  Tom de Vries  <tdevries@suse.de>
+
 	* omp-offload.c (oacc_fn_attrib_level): Remove static.
 	* omp-offload.h (oacc_fn_attrib_level): Declare.

--- a/gcc/config/nvptx/nvptx.c
+++ b/gcc/config/nvptx/nvptx.c
@@ -86,6 +86,11 @@
 #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
 {