From: Bernd Schmidt <bernds@redhat.co.uk>
Date: Tue, 12 Sep 2000 17:54:19 +0000 (+0000)
Subject: Don't try to make autoincs with the stack pointer
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24948ccceea2fda22961c3a5be3e5d17552e3fd0;p=gcc.git

Don't try to make autoincs with the stack pointer

From-SVN: r36370
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dcf1028093c..d6e3caabe32 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-09-12  Bernd Schmidt  <bernds@redhat.co.uk>
+
+	* flow.c (try_pre_increment_1): Don't do anything to sets of the stack
+	pointer.
+
 2000-09-12  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* builtins.c (built_in_decls): New array.
diff --git a/gcc/flow.c b/gcc/flow.c
index 12005d3b0fa..900e0284991 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -5699,6 +5699,7 @@ try_pre_increment_1 (pbi, insn)
   int regno = REGNO (SET_DEST (x));
   rtx y = pbi->reg_next_use[regno];
   if (y != 0
+      && SET_DEST (x) != stack_pointer_rtx
       && BLOCK_NUM (y) == BLOCK_NUM (insn)
       /* Don't do this if the reg dies, or gets set in y; a standard addressing
 	 mode would be better.  */