From: Tamar Christina <tamar.christina@arm.com>
Date: Wed, 14 Jul 2021 14:22:37 +0000 (+0100)
Subject: AArch32: Correct sdot RTL on aarch32
X-Git-Tag: basepoints/gcc-13~6012
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9165e2d58bb037793c1c93e1b5633a61f88db30;p=thirdparty%2Fgcc.git

AArch32: Correct sdot RTL on aarch32

The RTL Generated from <sup>dot_prod<vsi2qi> is invalid as operand3 cannot be
written to, it's a normal input.  For the expand it's just another operand
but the caller does not expect it to be written to.

gcc/ChangeLog:

	* config/arm/neon.md (<sup>dot_prod<vsi2qi>): Drop statements.
---

diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md
index 8b0a396947cc..764512166e9d 100644
--- a/gcc/config/arm/neon.md
+++ b/gcc/config/arm/neon.md
@@ -2961,13 +2961,7 @@
 		     DOTPROD)
 		    (match_operand:VCVTI 3 "register_operand")))]
   "TARGET_DOTPROD"
-{
-  emit_insn (
-    gen_neon_<sup>dot<vsi2qi> (operands[3], operands[3], operands[1],
-				 operands[2]));
-  emit_insn (gen_rtx_SET (operands[0], operands[3]));
-  DONE;
-})
+)
 
 ;; Auto-vectorizer pattern for usdot
 (define_expand "usdot_prod<vsi2qi>"