[gcc r15-9034] Alpha: Export `emit_unlikely_jump' for a subsequent change to use

[Maciej W. Rozycki via Gcc-cvs]

https://gcc.gnu.org/g:47a48c7f42b5ad908f087bf612615632319cf445

commit r15-9034-g47a48c7f42b5ad908f087bf612615632319cf445
Author: Maciej W. Rozycki <ma...@orcam.me.uk>
Date:   Sun Mar 30 15:24:50 2025 +0100

    Alpha: Export `emit_unlikely_jump' for a subsequent change to use
    
    Rename `emit_unlikely_jump' function to `alpha_emit_unlikely_jump', so
    as to avoid namespace pollution, updating callers accordingly and export
    it for use in the machine description.  Make it return the insn emitted.
    
            gcc/
            * config/alpha/alpha-protos.h (alpha_emit_unlikely_jump): New
            prototype.
            * config/alpha/alpha.cc (emit_unlikely_jump): Rename to...
            (alpha_emit_unlikely_jump): ... this.  Return the insn emitted.
            (alpha_split_atomic_op, alpha_split_compare_and_swap)
            (alpha_split_compare_and_swap_12, alpha_split_atomic_exchange)
            (alpha_split_atomic_exchange_12): Update call sites accordingly.

Diff:
---
 gcc/config/alpha/alpha-protos.h |  1 +
 gcc/config/alpha/alpha.cc       | 19 ++++++++++---------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/gcc/config/alpha/alpha-protos.h b/gcc/config/alpha/alpha-protos.h
index 1bc5520e5d55..6d28fa88ecf9 100644
--- a/gcc/config/alpha/alpha-protos.h
+++ b/gcc/config/alpha/alpha-protos.h
@@ -59,6 +59,7 @@ extern rtx alpha_expand_zap_mask (HOST_WIDE_INT);
 extern void alpha_expand_builtin_vector_binop (rtx (*)(rtx, rtx, rtx),
                                               machine_mode,
                                               rtx, rtx, rtx);
+extern rtx alpha_emit_unlikely_jump (rtx, rtx);
 extern void alpha_expand_builtin_establish_vms_condition_handler (rtx, rtx);
 extern void alpha_expand_builtin_revert_vms_condition_handler (rtx);
 
diff --git a/gcc/config/alpha/alpha.cc b/gcc/config/alpha/alpha.cc
index 6965ece16d0b..d3e8a3a9756e 100644
--- a/gcc/config/alpha/alpha.cc
+++ b/gcc/config/alpha/alpha.cc
@@ -4421,12 +4421,13 @@ alpha_expand_builtin_vector_binop (rtx (*gen) (rtx, 
rtx, rtx),
 /* A subroutine of the atomic operation splitters.  Jump to LABEL if
    COND is true.  Mark the jump as unlikely to be taken.  */
 
-static void
-emit_unlikely_jump (rtx cond, rtx label)
+rtx
+alpha_emit_unlikely_jump (rtx cond, rtx label)
 {
   rtx x = gen_rtx_IF_THEN_ELSE (VOIDmode, cond, label, pc_rtx);
   rtx_insn *insn = emit_jump_insn (gen_rtx_SET (pc_rtx, x));
   add_reg_br_prob_note (insn, profile_probability::very_unlikely ());
+  return insn;
 }
 
 /* Subroutines of the atomic operation splitters.  Emit barriers
@@ -4518,7 +4519,7 @@ alpha_split_atomic_op (enum rtx_code code, rtx mem, rtx 
val, rtx before,
   emit_insn (gen_store_conditional (mode, cond, mem, scratch));
 
   x = gen_rtx_EQ (DImode, cond, const0_rtx);
-  emit_unlikely_jump (x, label);
+  alpha_emit_unlikely_jump (x, label);
 
   alpha_post_atomic_barrier (model);
 }
@@ -4568,7 +4569,7 @@ alpha_split_compare_and_swap (rtx operands[])
       emit_insn (gen_rtx_SET (cond, x));
       x = gen_rtx_EQ (DImode, cond, const0_rtx);
     }
-  emit_unlikely_jump (x, label2);
+  alpha_emit_unlikely_jump (x, label2);
 
   emit_move_insn (cond, newval);
   emit_insn (gen_store_conditional
@@ -4577,7 +4578,7 @@ alpha_split_compare_and_swap (rtx operands[])
   if (!is_weak)
     {
       x = gen_rtx_EQ (DImode, cond, const0_rtx);
-      emit_unlikely_jump (x, label1);
+      alpha_emit_unlikely_jump (x, label1);
     }
 
   if (!is_mm_relaxed (mod_f))
@@ -4680,7 +4681,7 @@ alpha_split_compare_and_swap_12 (rtx operands[])
       emit_insn (gen_rtx_SET (cond, x));
       x = gen_rtx_EQ (DImode, cond, const0_rtx);
     }
-  emit_unlikely_jump (x, label2);
+  alpha_emit_unlikely_jump (x, label2);
 
   emit_insn (gen_mskxl (cond, scratch, mask, addr));
 
@@ -4692,7 +4693,7 @@ alpha_split_compare_and_swap_12 (rtx operands[])
   if (!is_weak)
     {
       x = gen_rtx_EQ (DImode, cond, const0_rtx);
-      emit_unlikely_jump (x, label1);
+      alpha_emit_unlikely_jump (x, label1);
     }
 
   if (!is_mm_relaxed (mod_f))
@@ -4732,7 +4733,7 @@ alpha_split_atomic_exchange (rtx operands[])
   emit_insn (gen_store_conditional (mode, cond, mem, scratch));
 
   x = gen_rtx_EQ (DImode, cond, const0_rtx);
-  emit_unlikely_jump (x, label);
+  alpha_emit_unlikely_jump (x, label);
 
   alpha_post_atomic_barrier (model);
 }
@@ -4806,7 +4807,7 @@ alpha_split_atomic_exchange_12 (rtx operands[])
   emit_insn (gen_store_conditional (DImode, scratch, mem, scratch));
 
   x = gen_rtx_EQ (DImode, scratch, const0_rtx);
-  emit_unlikely_jump (x, label);
+  alpha_emit_unlikely_jump (x, label);
 
   alpha_post_atomic_barrier (model);
 }