From: Danny Smith <dannysmith@users.sourceforge.net>
Date: Mon, 31 Jan 2005 05:49:07 +0000 (+0000)
Subject: re PR target/19704 (ICE for tail call of regparm 3 and dllimport)
X-Git-Tag: releases/gcc-4.0.0~1174
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6cc37e7e24bb91d009d0a0c9ae9f37dd3c329d74;p=thirdparty%2Fgcc.git

re PR target/19704 (ICE for tail call of regparm 3 and dllimport)

	PR target/19704
	* config/i386/i386.c (ix86_function_ok_for_sibcall):  Also check
	that dllimport'd functions do not use all call-clobbered registers
	to pass parameters.

From-SVN: r94467
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 218a95aa7cd0..e66f1f8a768d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2005-01-31  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	PR target/19704
+	* config/i386/i386.c (ix86_function_ok_for_sibcall):  Also check
+	that dllimport'd functions do not use all call-clobbered registers
+	to pass parameters.
+
 2005-01-30  Richard Henderson  <rth@redhat.com>
 
 	PR 19696
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 4b6b3f20db12..f72bd3d67885 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -1678,6 +1678,13 @@ ix86_function_ok_for_sibcall (tree decl, tree exp)
 	}
     }
 
+#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
+  /* Dllimport'd functions are also called indirectly.  */
+  if (decl && lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl))
+      && ix86_function_regparm (TREE_TYPE (decl), NULL) >= 3)
+    return false;
+#endif
+
   /* Otherwise okay.  That also includes certain types of indirect calls.  */
   return true;
 }