From: Bernd Schmidt <bernds@redhat.co.uk>
Date: Fri, 29 Dec 2000 16:14:30 +0000 (+0000)
Subject: Backport an aliasing fix to 2.95
X-Git-Tag: prereleases/gcc-2.95.3-test1~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd1723e51f1d4fb673e8163fa292df3d8fe0d4de;p=thirdparty%2Fgcc.git

Backport an aliasing fix to 2.95

From-SVN: r38542
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b3b390d3687d..ee2dca4854b9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -23,6 +23,11 @@
 	* config/arm/linux-elf.h (CPP_PREDEFINES): Don't define `arm' or
 	`arm_elf'; do define `__arm__'.
 
+	2000-08-22  Richard Henderson  <rth@cygnus.com>
+	* alias.c (init_alias_analysis): Do not register
+	struct_value_incoming_rtx or static_chain_rtx as pointing
+	to stack memory.
+
 2000-12-22  Bernd Schmidt  <bernds@redhat.co.uk>
 
 	* calls.c (emit_call_1): Fall back to call_pop/call_value_pop if no
diff --git a/gcc/alias.c b/gcc/alias.c
index 9d8aac7832a4..0cf893cf9da6 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -1455,15 +1455,6 @@ init_alias_analysis ()
       new_reg_base_value[HARD_FRAME_POINTER_REGNUM]
 	= gen_rtx_ADDRESS (Pmode, hard_frame_pointer_rtx);
 #endif
-      if (struct_value_incoming_rtx
-	  && GET_CODE (struct_value_incoming_rtx) == REG)
-	new_reg_base_value[REGNO (struct_value_incoming_rtx)]
-	  = gen_rtx_ADDRESS (Pmode, struct_value_incoming_rtx);
-
-      if (static_chain_rtx
-	  && GET_CODE (static_chain_rtx) == REG)
-	new_reg_base_value[REGNO (static_chain_rtx)]
-	  = gen_rtx_ADDRESS (Pmode, static_chain_rtx);
 
       /* Walk the insns adding values to the new_reg_base_value array.  */
       for (insn = get_insns (); insn; insn = NEXT_INSN (insn))