nvptx: Support '-mptx=4.1'

	gcc/
	* config/nvptx/nvptx-opts.h (enum ptx_version): Add
	'PTX_VERSION_4_1'.
	* config/nvptx/nvptx.cc (ptx_version_to_string)
	(ptx_version_to_number): Adjust.
	* config/nvptx/nvptx.h (TARGET_PTX_4_1): New.
	* config/nvptx/nvptx.opt (Enum(ptx_version)): Add 'EnumValue'
	'4.1' for 'PTX_VERSION_4_1'.
	* doc/invoke.texi (Nvidia PTX Options): Document '-mptx=4.1'.
	gcc/testsuite/
	* gcc.target/nvptx/mptx=4.1.c: New.

6 files changed, 29 insertions, 1 deletions

diff --git a/gcc/config/nvptx/nvptx-opts.h b/gcc/config/nvptx/nvptx-opts.h
index d0b47f0..1277f21 100644
--- a/gcc/config/nvptx/nvptx-opts.h
+++ b/gcc/config/nvptx/nvptx-opts.h
@@ -38,6 +38,7 @@ enum ptx_version
   PTX_VERSION_unset,
   PTX_VERSION_default = PTX_VERSION_unset,
   PTX_VERSION_3_1,
+  PTX_VERSION_4_1,
   PTX_VERSION_4_2,
   PTX_VERSION_6_0,
   PTX_VERSION_6_3,
diff --git a/gcc/config/nvptx/nvptx.cc b/gcc/config/nvptx/nvptx.cc
index fb5a45a..85c6f5d 100644
--- a/gcc/config/nvptx/nvptx.cc
+++ b/gcc/config/nvptx/nvptx.cc
@@ -252,6 +252,8 @@ ptx_version_to_string (enum ptx_version v)
     {
     case PTX_VERSION_3_1:
       return "3.1";
+    case PTX_VERSION_4_1:
+      return "4.1";
     case PTX_VERSION_4_2:
       return "4.2";
     case PTX_VERSION_6_0:
@@ -272,6 +274,8 @@ ptx_version_to_number (enum ptx_version v, bool major_p)
     {
     case PTX_VERSION_3_1:
       return major_p ? 3 : 1;
+    case PTX_VERSION_4_1:
+      return major_p ? 4 : 1;
     case PTX_VERSION_4_2:
       return major_p ? 4 : 2;
     case PTX_VERSION_6_0:
diff --git a/gcc/config/nvptx/nvptx.h b/gcc/config/nvptx/nvptx.h
index d9a5e54..7b7e172 100644
--- a/gcc/config/nvptx/nvptx.h
+++ b/gcc/config/nvptx/nvptx.h
@@ -90,6 +90,7 @@
 
 /* There are no 'TARGET_PTX_3_1' and smaller conditionals: our baseline is
    PTX ISA Version 3.1.  */
+#define TARGET_PTX_4_1 (ptx_version_option >= PTX_VERSION_4_1)
 #define TARGET_PTX_4_2 (ptx_version_option >= PTX_VERSION_4_2)
 #define TARGET_PTX_6_0 (ptx_version_option >= PTX_VERSION_6_0)
 #define TARGET_PTX_6_3 (ptx_version_option >= PTX_VERSION_6_3)
diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt
index 408c883..12f96d0 100644
--- a/gcc/config/nvptx/nvptx.opt
+++ b/gcc/config/nvptx/nvptx.opt
@@ -128,6 +128,9 @@ EnumValue
 Enum(ptx_version) String(3.1) Value(PTX_VERSION_3_1)
 
 EnumValue
+Enum(ptx_version) String(4.1) Value(PTX_VERSION_4_1)
+
+EnumValue
 Enum(ptx_version) String(4.2) Value(PTX_VERSION_4_2)
 
 EnumValue
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index a223472..6ec6834 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -30073,7 +30073,7 @@ capable.  For instance, for @option{-march-map=sm_50} select
 Generate code for the specified PTX ISA version.
 Valid version strings are
 @samp{3.1},
-@samp{4.2},
+@samp{4.1}, @samp{4.2},
 @samp{6.0}, @samp{6.3},
 and @samp{7.0}.
 The default PTX ISA version is 6.0, unless a higher
diff --git a/gcc/testsuite/gcc.target/nvptx/mptx=4.1.c b/gcc/testsuite/gcc.target/nvptx/mptx=4.1.c
new file mode 100644
index 0000000..57d050c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/mptx=4.1.c
@@ -0,0 +1,19 @@
+/* { dg-do assemble } */
+/* { dg-options {-march=sm_30 -mptx=4.1} } */
+/* { dg-additional-options -save-temps } */
+/* { dg-final { scan-assembler-times {(?n)^	\.version	4\.1$} 1 } } */
+/* { dg-final { scan-assembler-times {(?n)^	\.target	sm_30$} 1 } } */
+
+#if __PTX_ISA_VERSION_MAJOR__ != 4
+#error wrong value for __PTX_ISA_VERSION_MAJOR__
+#endif
+
+#if __PTX_ISA_VERSION_MINOR__ != 1
+#error wrong value for __PTX_ISA_VERSION_MINOR__
+#endif
+
+#if __PTX_SM__ != 300
+#error wrong value for __PTX_SM__
+#endif
+
+int dummy;