From: Tamar Christina <tamar.christina@arm.com>
Date: Wed, 2 Feb 2022 10:51:38 +0000 (+0000)
Subject: AArch64: use canonical ordering for complex mul, fma and fms
X-Git-Tag: basepoints/gcc-13~1319
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab95fe61fea38fbac7f4e00abd32c2530532351a;p=thirdparty%2Fgcc.git

AArch64: use canonical ordering for complex mul, fma and fms

After the first patch in the series this updates the optabs to expect the
canonical sequence.

gcc/ChangeLog:

	PR tree-optimization/102819
	PR tree-optimization/103169
	* config/aarch64/aarch64-simd.md (cml<fcmac1><conj_op><mode>4): Use
	canonical order.
	* config/aarch64/aarch64-sve.md (cml<fcmac1><conj_op><mode>4): Likewise.
---

diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md
index 71c429fe75a2..13255be84fd2 100644
--- a/gcc/config/aarch64/aarch64-simd.md
+++ b/gcc/config/aarch64/aarch64-simd.md
@@ -556,17 +556,17 @@
 ;; remainder.  Because of this, expand early.
 (define_expand "cml<fcmac1><conj_op><mode>4"
   [(set (match_operand:VHSDF 0 "register_operand")
-	(plus:VHSDF (match_operand:VHSDF 1 "register_operand")
-		    (unspec:VHSDF [(match_operand:VHSDF 2 "register_operand")
-				   (match_operand:VHSDF 3 "register_operand")]
-				   FCMLA_OP)))]
+	(plus:VHSDF (unspec:VHSDF [(match_operand:VHSDF 1 "register_operand")
+				   (match_operand:VHSDF 2 "register_operand")]
+				   FCMLA_OP)
+		    (match_operand:VHSDF 3 "register_operand")))]
   "TARGET_COMPLEX && !BYTES_BIG_ENDIAN"
 {
   rtx tmp = gen_reg_rtx (<MODE>mode);
-  emit_insn (gen_aarch64_fcmla<rotsplit1><mode> (tmp, operands[1],
-						 operands[3], operands[2]));
+  emit_insn (gen_aarch64_fcmla<rotsplit1><mode> (tmp, operands[3],
+						 operands[2], operands[1]));
   emit_insn (gen_aarch64_fcmla<rotsplit2><mode> (operands[0], tmp,
-						 operands[3], operands[2]));
+						 operands[2], operands[1]));
   DONE;
 })
 
diff --git a/gcc/config/aarch64/aarch64-sve.md b/gcc/config/aarch64/aarch64-sve.md
index bd22fe52a319..bd60e65b0c3f 100644
--- a/gcc/config/aarch64/aarch64-sve.md
+++ b/gcc/config/aarch64/aarch64-sve.md
@@ -7278,11 +7278,11 @@
   rtx tmp = gen_reg_rtx (<MODE>mode);
   emit_insn
     (gen_aarch64_pred_fcmla<sve_rot1><mode> (tmp, operands[4],
-					     operands[3], operands[2],
-					     operands[1], operands[5]));
+					     operands[2], operands[1],
+					     operands[3], operands[5]));
   emit_insn
     (gen_aarch64_pred_fcmla<sve_rot2><mode> (operands[0], operands[4],
-					     operands[3], operands[2],
+					     operands[2], operands[1],
 					     tmp, operands[5]));
   DONE;
 })