Don't try to make autoincs with the stack pointer

From-SVN: r36370

Don't try to make autoincs with the stack pointer
From-SVN: r36370
24948ccc · Bernd Schmidt · Bernd Schmidt · a210651e · 24948ccc · 24948ccc
Commit 24948ccc authored 24 years ago by Bernd Schmidt Committed by Bernd Schmidt 24 years ago
Hide whitespace changes
Inline Side-by-side

Showing with 6 additions and 0 deletions

gcc/ChangeLog
+5 -0

gcc/flow.c
+1 -0

No files found.
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+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.

--- 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.  */