From: Pat Haugen <pthaugen@linux.ibm.com>
Date: Tue, 14 Sep 2021 20:02:09 +0000 (-0500)
Subject: Verify destination[source] of a load[store] instruction is a register.
X-Git-Tag: releases/gcc-11.3.0~901
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4bcb3213f7431a64a4a10919f6661541ee4be88b;p=thirdparty%2Fgcc.git

Verify destination[source] of a load[store] instruction is a register.

	Backported from master:
	2021-08-09  Pat Haugen  <pthaugen@linux.ibm.com>

gcc/ChangeLog:

	* config/rs6000/rs6000.c (is_load_insn1): Verify destination is a
	register.
	(is_store_insn1): Verify source is a register.
---

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 843ce97b9932..528a6f552bfd 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -18731,7 +18731,12 @@ is_load_insn1 (rtx pat, rtx *load_mem)
     return false;
 
   if (GET_CODE (pat) == SET)
-    return find_mem_ref (SET_SRC (pat), load_mem);
+    {
+      if (REG_P (SET_DEST (pat)))
+	return find_mem_ref (SET_SRC (pat), load_mem);
+      else
+	return false;
+    }
 
   if (GET_CODE (pat) == PARALLEL)
     {
@@ -18768,7 +18773,12 @@ is_store_insn1 (rtx pat, rtx *str_mem)
     return false;
 
   if (GET_CODE (pat) == SET)
-    return find_mem_ref (SET_DEST (pat), str_mem);
+    {
+      if (REG_P (SET_SRC (pat)) || SUBREG_P (SET_SRC (pat)))
+	return find_mem_ref (SET_DEST (pat), str_mem);
+      else
+	return false;
+    }
 
   if (GET_CODE (pat) == PARALLEL)
     {