From: Richard Henderson <richard.henderson@linaro.org>
Date: Mon, 4 Aug 2025 12:47:05 +0000 (+1000)
Subject: aarch64: Consider TARGET_CMPBR in rtx costs
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2af897e11b358fccb978e3a96b2899ce193bcd25;p=thirdparty%2Fgcc.git

aarch64: Consider TARGET_CMPBR in rtx costs

gcc:
	* config/aarch64/aarch64.cc (aarch64_if_then_else_costs):
	Use aarch64_cb_rhs to match CB insns.
---

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index d5272294f0a..e4a9e876e7f 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -14460,6 +14460,15 @@ aarch64_if_then_else_costs (rtx op0, rtx op1, rtx op2, int *cost, bool speed)
 	    *cost += extra_cost->alu.arith * 2;
 	  return true;
 	}
+
+      if (TARGET_CMPBR)
+	{
+	  *cost += rtx_cost (inner, cmpmode, cmpcode, 0, speed);
+	  if ((cmpmode != SImode && cmpmode != DImode)
+	      || !aarch64_cb_rhs (cmpcode, comparator))
+	    *cost += rtx_cost (comparator, cmpmode, cmpcode, 1, speed);
+	  return true;
+	}
     }
   else if (GET_MODE_CLASS (GET_MODE (inner)) == MODE_CC)
     {