RISC-V: riscv-ext.def: Add allocated group IDs and group bit positions

The riscv-c-api-doc defines a group ID and and a bit position for some
extension.  Most of them are set in riscv-ext.def, but some are missing
and one bit position (for Zilsd) is wrong.

This patch replaces the `BITMASK_NOT_YET_ALLOCATED` value for the actual
allocated value wherever possible and fixes the bit position for Zilsd.

Currently, we don't have any infrastructure to utilize the information
that is placed into riscv_ext_info_t::m_bitmask_group_id and
riscv_ext_info_t::m_bitmask_group_bit_pos.  This also means we can't
test.

gcc/ChangeLog:

	* config/riscv/riscv-ext.def: Add allocated group IDs and
	group bit positions.

Signed-off-by: Christoph Müllner <[email protected]>

Author: cmuellner

gcc/config/riscv/riscv-ext.def

@@ -80,8 +80,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({}),
   /* SUPPORTED_VERSIONS */ ({{2, 0}}),
   /* FLAG_GROUP */ base,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 0,
+  /* BITMASK_BIT_POSITION*/ 4,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -190,8 +190,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({"zba", "zbb", "zbs"}),
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ base,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 0,
+  /* BITMASK_BIT_POSITION*/ 1,
   /* EXTRA_EXTENSION_FLAGS */ EXT_FLAG_MACRO)
 
 DEFINE_RISCV_EXT(
@@ -216,8 +216,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({}),
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ base,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 0,
+  /* BITMASK_BIT_POSITION*/ 7,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -398,8 +398,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({}),
   /* SUPPORTED_VERSIONS */ ({{2, 0}}),
   /* FLAG_GROUP */ zi,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 1,
+  /* BITMASK_BIT_POSITION*/ 11,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -464,7 +464,7 @@ DEFINE_RISCV_EXT(
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ zi,
   /* BITMASK_GROUP_ID */ 1,
-  /* BITMASK_BIT_POSITION*/ 1,
+  /* BITMASK_BIT_POSITION*/ 8,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -476,8 +476,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({}),
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ zm,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 1,
+  /* BITMASK_BIT_POSITION*/ 12,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -787,8 +787,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({"zca"}),
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ zc,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 1,
+  /* BITMASK_BIT_POSITION*/ 10,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(
@@ -813,8 +813,8 @@ DEFINE_RISCV_EXT(
   /* DEP_EXTS */ ({"zca", "zilsd"}),
   /* SUPPORTED_VERSIONS */ ({{1, 0}}),
   /* FLAG_GROUP */ zc,
-  /* BITMASK_GROUP_ID */ BITMASK_NOT_YET_ALLOCATED,
-  /* BITMASK_BIT_POSITION*/ BITMASK_NOT_YET_ALLOCATED,
+  /* BITMASK_GROUP_ID */ 1,
+  /* BITMASK_BIT_POSITION*/ 9,
   /* EXTRA_EXTENSION_FLAGS */ 0)
 
 DEFINE_RISCV_EXT(