[PATCH v2 01/10] RISC-V: Simplify memory model code [PR 100265]

[Christoph Muellner <cmuellner@gcc.gnu.org>]

We don't have any special treatment of MEMMODEL_SYNC_* values,
so let's hide them behind the memmodel_base() function.

    gcc/
	PR 100265
        * config/riscv/riscv.c (riscv_memmodel_needs_amo_acquire):
	  Ignore MEMMODEL_SYNC_* values.
        * config/riscv/riscv.c (riscv_memmodel_needs_release_fence):
	  Likewise.
        * config/riscv/riscv.c (riscv_print_operand): Eliminate
	  MEMMODEL_SYNC_* values by calling memmodel_base().
---
 gcc/config/riscv/riscv.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
index 27665e5b58f9..545f3d0cb82c 100644
--- a/gcc/config/riscv/riscv.c
+++ b/gcc/config/riscv/riscv.c
@@ -3350,20 +3350,17 @@ riscv_print_operand_reloc (FILE *file, rtx op, bool hi_reloc)
    acquire portion of memory model MODEL.  */
 
 static bool
-riscv_memmodel_needs_amo_acquire (enum memmodel model)
+riscv_memmodel_needs_amo_acquire (const enum memmodel model)
 {
   switch (model)
     {
       case MEMMODEL_ACQ_REL:
       case MEMMODEL_SEQ_CST:
-      case MEMMODEL_SYNC_SEQ_CST:
       case MEMMODEL_ACQUIRE:
       case MEMMODEL_CONSUME:
-      case MEMMODEL_SYNC_ACQUIRE:
 	return true;
 
       case MEMMODEL_RELEASE:
-      case MEMMODEL_SYNC_RELEASE:
       case MEMMODEL_RELAXED:
 	return false;
 
@@ -3376,20 +3373,17 @@ riscv_memmodel_needs_amo_acquire (enum memmodel model)
    implement the release portion of memory model MODEL.  */
 
 static bool
-riscv_memmodel_needs_release_fence (enum memmodel model)
+riscv_memmodel_needs_release_fence (const enum memmodel model)
 {
   switch (model)
     {
       case MEMMODEL_ACQ_REL:
       case MEMMODEL_SEQ_CST:
-      case MEMMODEL_SYNC_SEQ_CST:
       case MEMMODEL_RELEASE:
-      case MEMMODEL_SYNC_RELEASE:
 	return true;
 
       case MEMMODEL_ACQUIRE:
       case MEMMODEL_CONSUME:
-      case MEMMODEL_SYNC_ACQUIRE:
       case MEMMODEL_RELAXED:
 	return false;
 
@@ -3414,6 +3408,7 @@ riscv_print_operand (FILE *file, rtx op, int letter)
 {
   machine_mode mode = GET_MODE (op);
   enum rtx_code code = GET_CODE (op);
+  const enum memmodel model = memmodel_base (INTVAL (op));
 
   switch (letter)
     {
@@ -3433,12 +3428,12 @@ riscv_print_operand (FILE *file, rtx op, int letter)
       break;
 
     case 'A':
-      if (riscv_memmodel_needs_amo_acquire ((enum memmodel) INTVAL (op)))
+      if (riscv_memmodel_needs_amo_acquire (model))
 	fputs (".aq", file);
       break;
 
     case 'F':
-      if (riscv_memmodel_needs_release_fence ((enum memmodel) INTVAL (op)))
+      if (riscv_memmodel_needs_release_fence (model))
 	fputs ("fence iorw,ow; ", file);
       break;
 
-- 
2.31.1