From: David S. Miller <davem@redhat.com>
Date: Fri, 27 Sep 2002 04:09:07 +0000 (-0700)
Subject: re PR rtl-optimization/7335 (Sparc: ICE in verify_wide_reg (flow.c:557) with long... 
X-Git-Tag: releases/gcc-3.2.1~239
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=915ecdf20ed1258a65f48919f60696aff229fb80;p=thirdparty%2Fgcc.git

re PR rtl-optimization/7335 (Sparc: ICE in verify_wide_reg (flow.c:557) with long double and optimization)

2002-09-26  David S. Miller  <davem@redhat.com>

	PR optimization/7335
	* calls.c (emit_library_call_value_1): Passing args by reference
	converts a CONST function into a PURE one.

From-SVN: r57574
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7dd1e5acddc7..9c6c6ff51767 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2002-09-26  David S. Miller  <davem@redhat.com>
+
+	* calls.c (emit_library_call_value_1): Passing args by reference
+	converts a CONST function into a PURE one.
+
 2002-09-26  Richard Henderson  <rth@redhat.com>
 
 	PR c/7160
diff --git a/gcc/calls.c b/gcc/calls.c
index c0a73e7740e9..449c933d212a 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -3666,6 +3666,14 @@ emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
 #endif
 	    ;
 
+	  /* If this was a CONST function, it is now PURE since
+	     it now reads memory.  */
+	  if (flags & ECF_CONST)
+	    {
+	      flags &= ~ECF_CONST;
+	      flags |= ECF_PURE;
+	    }
+
 	  if (GET_MODE (val) == MEM && ! must_copy)
 	    slot = val;
 	  else if (must_copy)