From: Maciej W. Rozycki <macro@orcam.me.uk>
Date: Sun, 30 Mar 2025 14:24:50 +0000 (+0100)
Subject: Alpha: Export `emit_unlikely_jump' for a subsequent change to use
X-Git-Tag: basepoints/gcc-16~519
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47a48c7f42b5ad908f087bf612615632319cf445;p=thirdparty%2Fgcc.git

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 --git a/gcc/config/alpha/alpha-protos.h b/gcc/config/alpha/alpha-protos.h
index 1bc5520e5d5..6d28fa88ecf 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 6965ece16d0..d3e8a3a9756 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);
 }