[OpenACC 'kernels'] '-fopenacc-kernels=[...]' -> '--param=openacc-kernels=[...]'

This configuration knob is temporary, and isn't really meant to be exposed to
users.

	gcc/
	* params.opt (-param=openacc-kernels=): Add.
	* omp-oacc-kernels-decompose.cc
	(pass_omp_oacc_kernels_decompose::gate): Use it.
	* doc/invoke.texi (-fopenacc-kernels=@var{mode}): Move...
	(--param): ... here, 'openacc-kernels'.
	gcc/c-family/
	* c.opt (fopenacc-kernels=): Remove.
	gcc/fortran/
	* lang.opt (fopenacc-kernels=): Remove.
	gcc/testsuite/
	* c-c++-common/goacc/if-clause-2.c: '-fopenacc-kernels=[...]' ->
	'--param=openacc-kernels=[...]'.
	* c-c++-common/goacc/kernels-decompose-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-2.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-ice-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-ice-2.c: Likewise.
	* gfortran.dg/goacc/kernels-decompose-1.f95: Likewise.
	* gfortran.dg/goacc/kernels-decompose-2.f95: Likewise.
	* gfortran.dg/goacc/kernels-tree.f95: Likewise.
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose-ice-1.c:
	'-fopenacc-kernels=[...]' -> '--param=openacc-kernels=[...]'.
	* testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-decompose-1.c:
	Likewise.
	* testsuite/libgomp.oacc-fortran/pr94358-1.f90: Likewise.

gcc/c-family/c.opt

@@ -1873,19 +1873,6 @@ fopenacc-dim=
 C ObjC C++ ObjC++ LTO Joined Var(flag_openacc_dims)
 Specify default OpenACC compute dimensions.
 
-fopenacc-kernels=
-C ObjC C++ ObjC++ RejectNegative Joined Enum(openacc_kernels) Var(flag_openacc_kernels) Init(OPENACC_KERNELS_PARLOOPS)
--fopenacc-kernels=[decompose|parloops]	Specify mode of OpenACC 'kernels' constructs handling.
-
-Enum
-Name(openacc_kernels) Type(enum openacc_kernels)
-
-EnumValue
-Enum(openacc_kernels) String(decompose) Value(OPENACC_KERNELS_DECOMPOSE)
-
-EnumValue
-Enum(openacc_kernels) String(parloops) Value(OPENACC_KERNELS_PARLOOPS)
-
 fopenmp
 C ObjC C++ ObjC++ LTO Var(flag_openmp)
 Enable OpenMP (implies -frecursive in Fortran).

gcc/doc/invoke.texi

@@ -202,7 +202,7 @@ in the following sections.
 -aux-info @var{filename}  -fallow-parameterless-variadic-functions @gol
 -fno-asm  -fno-builtin  -fno-builtin-@var{function}  -fgimple@gol
 -fhosted  -ffreestanding @gol
--fopenacc  -fopenacc-dim=@var{geom}  -fopenacc-kernels=@var{mode} @gol
+-fopenacc  -fopenacc-dim=@var{geom} @gol
 -fopenmp  -fopenmp-simd @gol
 -fms-extensions  -fplan9-extensions  -fsso-struct=@var{endianness} @gol
 -fallow-single-precision  -fcond-mismatch  -flax-vector-conversions @gol
@@ -2619,18 +2619,6 @@ not explicitly specify.  The @var{geom} value is a triple of
 ':'-separated sizes, in order 'gang', 'worker' and, 'vector'.  A size
 can be omitted, to use a target-specific default value.
 
-@item -fopenacc-kernels=@var{mode}
-@opindex fopenacc-kernels
-@cindex OpenACC accelerator programming
-Specify mode of OpenACC `kernels' constructs handling.
-With @option{-fopenacc-kernels=decompose}, OpenACC `kernels'
-constructs are decomposed into parts, a sequence of compute
-constructs, each then handled individually.
-This is work in progress.
-With @option{-fopenacc-kernels=parloops}, OpenACC `kernels' constructs
-are handled by the @samp{parloops} pass, en bloc.
-This is the current default.
-
 @item -fopenmp
 @opindex fopenmp
 @cindex OpenMP parallel
@@ -14376,6 +14364,16 @@ The parameter is used only in GIMPLE FE.
 The maximum number of 'after supernode' exploded nodes within the analyzer
 per supernode, before terminating analysis.
 
+@item openacc-kernels
+Specify mode of OpenACC `kernels' constructs handling.
+With @option{--param=openacc-kernels=decompose}, OpenACC `kernels'
+constructs are decomposed into parts, a sequence of compute
+constructs, each then handled individually.
+This is work in progress.
+With @option{--param=openacc-kernels=parloops}, OpenACC `kernels'
+constructs are handled by the @samp{parloops} pass, en bloc.
+This is the current default.
+
 @end table
 
 The following choices of @var{name} are available on AArch64 targets:

gcc/fortran/lang.opt

@@ -691,10 +691,6 @@ fopenacc-dim=
 Fortran LTO Joined Var(flag_openacc_dims)
 ; Documented in C
 
-fopenacc-kernels=
-Fortran RejectNegative Joined Enum(openacc_kernels) Var(flag_openacc_kernels) Init(OPENACC_KERNELS_PARLOOPS)
-; Documented in C
-
 fopenmp
 Fortran LTO
 ; Documented in C

gcc/omp-oacc-kernels-decompose.cc

@@ -1527,7 +1527,7 @@ public:
   virtual bool gate (function *)
   {
     return (flag_openacc
-	    && flag_openacc_kernels == OPENACC_KERNELS_DECOMPOSE);
+	    && param_openacc_kernels == OPENACC_KERNELS_DECOMPOSE);
   }
   virtual unsigned int execute (function *)
   {

gcc/params.opt

@@ -777,6 +777,19 @@ The minimum probability of reaching a source block for interblock speculative sc
 Common Joined UInteger Var(param_min_vect_loop_bound) Param Optimization
 If -ftree-vectorize is used, the minimal loop bound of a loop to be considered for vectorization.
 
+-param=openacc-kernels=
+Common Joined Enum(openacc_kernels) Var(param_openacc_kernels) Init(OPENACC_KERNELS_PARLOOPS) Param
+--param=openacc-kernels=[decompose|parloops]	Specify mode of OpenACC 'kernels' constructs handling.
+
+Enum
+Name(openacc_kernels) Type(enum openacc_kernels)
+
+EnumValue
+Enum(openacc_kernels) String(decompose) Value(OPENACC_KERNELS_DECOMPOSE)
+
+EnumValue
+Enum(openacc_kernels) String(parloops) Value(OPENACC_KERNELS_PARLOOPS)
+
 -param=parloops-chunk-size=
 Common Joined UInteger Var(param_parloops_chunk_size) Param Optimization
 Chunk size of omp schedule for loops parallelized by parloops.

gcc/testsuite/c-c++-common/goacc/if-clause-2.c

@@ -1,5 +1,5 @@
 /* { dg-additional-options "-fdump-tree-gimple" } */
-/* { dg-additional-options "-fopenacc-kernels=decompose" }
+/* { dg-additional-options "--param=openacc-kernels=decompose" }
    { dg-additional-options "-fdump-tree-omp_oacc_kernels_decompose" } */
 
 void

gcc/testsuite/c-c++-common/goacc/kernels-decompose-1.c

@@ -2,7 +2,7 @@
 
 /* { dg-additional-options "-fopt-info-omp-all" } */
 /* { dg-additional-options "-fdump-tree-gimple" } */
-/* { dg-additional-options "-fopenacc-kernels=decompose" }
+/* { dg-additional-options "--param=openacc-kernels=decompose" }
    { dg-additional-options "-fdump-tree-omp_oacc_kernels_decompose" } */
 
 /* See also '../../gfortran.dg/goacc/kernels-decompose-1.f95'.  */

gcc/testsuite/c-c++-common/goacc/kernels-decompose-2.c

@@ -1,7 +1,7 @@
 /* Test OpenACC 'kernels' construct decomposition.  */
 
 /* { dg-additional-options "-fopt-info-omp-all" } */
-/* { dg-additional-options "-fopenacc-kernels=decompose" }
+/* { dg-additional-options "--param=openacc-kernels=decompose" }
 /* { dg-additional-options "-O2" } for 'parloops'.  */
 
 /* See also '../../gfortran.dg/goacc/kernels-decompose-2.f95'.  */

gcc/testsuite/c-c++-common/goacc/kernels-decompose-ice-1.c

@@ -1,7 +1,7 @@
 /* Test OpenACC 'kernels' construct decomposition.  */
 
 /* { dg-additional-options "-fopt-info-omp-all" } */
-/* { dg-additional-options "-fopenacc-kernels=decompose" } */
+/* { dg-additional-options "--param=openacc-kernels=decompose" } */
 /* { dg-ice "TODO" }
    { dg-prune-output "during GIMPLE pass: omplower" } */
 

gcc/testsuite/c-c++-common/goacc/kernels-decompose-ice-2.c

@@ -1,6 +1,6 @@
 /* Test OpenACC 'kernels' construct decomposition.  */
 
-/* { dg-additional-options "-fopenacc-kernels=decompose" } */
+/* { dg-additional-options "--param=openacc-kernels=decompose" } */
 /* { dg-ice "TODO" }
    { dg-prune-output "during GIMPLE pass: omplower" } */
 

gcc/testsuite/gfortran.dg/goacc/kernels-decompose-1.f95

@@ -2,7 +2,7 @@
 
 ! { dg-additional-options "-fopt-info-omp-all" }
 ! { dg-additional-options "-fdump-tree-gimple" }
-! { dg-additional-options "-fopenacc-kernels=decompose" }
+! { dg-additional-options "--param=openacc-kernels=decompose" }
 ! { dg-additional-options "-fdump-tree-omp_oacc_kernels_decompose" }
 
 ! See also '../../c-c++-common/goacc/kernels-decompose-1.c'.

gcc/testsuite/gfortran.dg/goacc/kernels-decompose-2.f95

@@ -1,7 +1,7 @@
 ! Test OpenACC 'kernels' construct decomposition.
 
 ! { dg-additional-options "-fopt-info-omp-all" }
-! { dg-additional-options "-fopenacc-kernels=decompose" }
+! { dg-additional-options "--param=openacc-kernels=decompose" }
 ! { dg-additional-options "-O2" } for 'parloops'.
 
 ! See also '../../c-c++-common/goacc/kernels-decompose-2.c'.

gcc/testsuite/gfortran.dg/goacc/kernels-tree.f95

@@ -1,6 +1,6 @@
 ! { dg-do compile } 
 ! { dg-additional-options "-fdump-tree-original" } 
-! { dg-additional-options "-fopenacc-kernels=decompose" }
+! { dg-additional-options "--param=openacc-kernels=decompose" }
 ! { dg-additional-options "-fdump-tree-omp_oacc_kernels_decompose" }
 
 program test

libgomp/testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose-ice-1.c

@@ -1,4 +1,4 @@
-/* { dg-additional-options "-fopenacc-kernels=decompose" } */
+/* { dg-additional-options "--param=openacc-kernels=decompose" } */
 /* Hopefully, this is the same issue as '../../../gcc/testsuite/c-c++-common/goacc/kernels-decompose-ice-1.c'.
    { dg-ice "TODO" }
    TODO { dg-prune-output "during GIMPLE pass: omplower" }

libgomp/testsuite/libgomp.oacc-c-c++-common/declare-vla-kernels-decompose.c

@@ -1,4 +1,4 @@
-/* { dg-additional-options "-fopenacc-kernels=decompose" } */
+/* { dg-additional-options "--param=openacc-kernels=decompose" } */
 
 /* See also 'declare-vla-kernels-decompose-ice-1.c'.  */
 

libgomp/testsuite/libgomp.oacc-c-c++-common/kernels-decompose-1.c

@@ -1,7 +1,7 @@
 /* Test OpenACC 'kernels' construct decomposition.  */
 
 /* { dg-additional-options "-fopt-info-omp-all" } */
-/* { dg-additional-options "-fopenacc-kernels=decompose" } */
+/* { dg-additional-options "--param=openacc-kernels=decompose" } */
 
 /* It's only with Tcl 8.5 (released in 2007) that "the variable 'varName'
    passed to 'incr' may be unset, and in that case, it will be set to [...]",

libgomp/testsuite/libgomp.oacc-fortran/pr94358-1.f90

@@ -1,6 +1,6 @@
 ! { dg-do run }
 ! { dg-additional-options "-fopt-info-omp-all" }
-! { dg-additional-options "-fopenacc-kernels=decompose" }
+! { dg-additional-options "--param=openacc-kernels=decompose" }
 
 ! It's only with Tcl 8.5 (released in 2007) that "the variable 'varName'
 ! passed to 'incr' may be unset, and in that case, it will be set to [...]",