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alias.c (find_base_value): Only use new_reg_base_value shortcut if the register is set once.

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* alias.c (find_base_value): Only use new_reg_base_value shortcut
        if the register is set once.

From-SVN: r61017
This commit is contained in:
Richard Henderson 2003-01-07 12:59:42 -08:00 committed by Richard Henderson
parent d02c69bed7
commit 1afdf91c83
2 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-01-07 Richard Henderson <rth@redhat.com>
* alias.c (find_base_value): Only use new_reg_base_value shortcut
if the register is set once.
2003-01-07 Sylvain Pion <Sylvain.Pion@mpi-sb.mpg.de>
* config/i386/i386.c (ix86_init_mmx_sse_builtins):

6
gcc/alias.c
View File

@ -1,5 +1,6 @@
/* Alias analysis for GNU C
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Contributed by John Carr (jfc@mit.edu).
This file is part of GCC.
@ -787,7 +788,8 @@ find_base_value (src)
{
/* If we're inside init_alias_analysis, use new_reg_base_value
to reduce the number of relaxation iterations. */
if (new_reg_base_value && new_reg_base_value[regno])
if (new_reg_base_value && new_reg_base_value[regno]
&& REG_N_SETS (regno) == 1)
return new_reg_base_value[regno];
if (reg_base_value[regno])