[nvptx] Remove -m32

The nvptx port has an -m32 option, but it's not clear whether this
was ever build/tested/used.

Don't expose to user anymore.  Tested on nvptx.

gcc/ChangeLog:

2020-10-15  Tom de Vries  <tdevries@suse.de>

	PR target/97436
	* config/nvptx/nvptx.opt (m32): Comment out.
	* doc/invoke.texi (NVPTX options): Remove -m32.

gcc/testsuite/ChangeLog:

2020-10-15  Tom de Vries  <tdevries@suse.de>

	PR target/97436
	* gcc.target/nvptx/atomic_fetch-3.c: Remove.

diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt
index 38454222d423daf67d4301e2dc6424644b023356..045e3548f2d005a4064c9cdecd02de1560f6620f 100644 (file)
--- a/gcc/config/nvptx/nvptx.opt
+++ b/gcc/config/nvptx/nvptx.opt
@@ -17,9 +17,11 @@
 ; along with GCC; see the file COPYING3.  If not see
 ; <http://www.gnu.org/licenses/>.
 
-m32
-Target Report RejectNegative InverseMask(ABI64)
-Generate code for a 32-bit ABI.
+; It's not clear whether this was ever build/tested/used, so this is no longer
+; exposed to the user.
+;m32
+;Target Report RejectNegative InverseMask(ABI64)
+;Generate code for a 32-bit ABI.
 
 m64
 Target Report RejectNegative Mask(ABI64)

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 289d81614b2f540c6a19f7ace395767850ffc111..631a119181c81fe1b73eb846cab5e320eb130232 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1109,7 +1109,7 @@ Objective-C and Objective-C++ Dialects}.
 -march=@var{arch}  -mbmx  -mno-bmx  -mcdx  -mno-cdx}
 
 @emph{Nvidia PTX Options}
-@gccoptlist{-m32  -m64  -mmainkernel  -moptimize}
+@gccoptlist{-m64  -mmainkernel  -moptimize}
 
 @emph{OpenRISC Options}
 @gccoptlist{-mboard=@var{name}  -mnewlib  -mhard-mul  -mhard-div @gol
@@ -25614,11 +25614,10 @@ These options are defined for Nvidia PTX:
 
 @table @gcctabopt
 
-@item -m32
 @itemx -m64
-@opindex m32
 @opindex m64
-Generate code for 32-bit or 64-bit ABI.
+Ignored, but preserved for backward compatibility.  Only 64-bit ABI is
+supported.
 
 @item -misa=@var{ISA-string}
 @opindex march

diff --git a/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c b/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c
deleted file mode 100644 (file)
index 36a83eb..0000000
--- a/gcc/testsuite/gcc.target/nvptx/atomic_fetch-3.c
+++ /dev/null
@@ -1,24 +0,0 @@
-/* Test the nvptx atomic instructions for __atomic_fetch_OP for
-   SImode arguments.  */
-
-/* { dg-do compile } */
-/* { dg-options "-O2 -m32" } */
-
-int
-main()
-{
-  unsigned long a = ~0;
-  unsigned b = 0xa;
-
-  __atomic_fetch_add (&a, b, 0);
-  __atomic_fetch_and (&a, b, 0);
-  __atomic_fetch_or (&a, b, 0);
-  __atomic_fetch_xor (&a, b, 0);
-  
-  return a;
-}
-
-/* { dg-final { scan-assembler "atom.add.u32" } } */
-/* { dg-final { scan-assembler "atom.b32.and" } } */
-/* { dg-final { scan-assembler "atom.b32.or" } } */
-/* { dg-final { scan-assembler "atom.b32.xor" } } */