From: Richard Sandiford <richard.sandiford@arm.com>
Date: Tue, 24 Oct 2023 10:03:21 +0000 (+0100)
Subject: i386: Fix unprotected REGNO in aeswidekl_operation
X-Git-Tag: basepoints/gcc-15~5257
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc4779559bea982f9307a8bc1cb017b8eda28d6d;p=thirdparty%2Fgcc.git

i386: Fix unprotected REGNO in aeswidekl_operation

I hit an ICE in aeswidekl_operation while testing the late-combine
pass on x86.  The predicate tested REGNO without first testing REG_P.

gcc/
	* config/i386/predicates.md (aeswidekl_operation): Protect
	REGNO check with REG_P.
---

diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index ef49efdbde58..e3d55f0c5022 100644
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -2260,6 +2260,7 @@
 	  || GET_CODE (SET_SRC (elt)) != UNSPEC_VOLATILE
 	  || GET_MODE (SET_SRC (elt)) != V2DImode
 	  || XVECLEN (SET_SRC (elt), 0) != 1
+	  || !REG_P (XVECEXP (SET_SRC (elt), 0, 0))
 	  || REGNO (XVECEXP (SET_SRC (elt), 0, 0)) != GET_SSE_REGNO (i))
 	return false;
     }