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alias.c (find_base_value): Use new_reg_base_value if it's live.

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* alias.c (find_base_value): Use new_reg_base_value if it's live.
        (copying_arguments): Make boolean.

From-SVN: r59483
This commit is contained in:
Richard Henderson 2002-11-25 16:51:17 -08:00 committed by Richard Henderson
parent cc5baa8634
commit 83bbd9b6c0
2 changed files with 18 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-11-25 Richard Henderson <rth@redhat.com>
* alias.c (find_base_value): Use new_reg_base_value if it's live.
(copying_arguments): Make boolean.
2002-11-25 Jason Thorpe <thorpej@wasabisystems.com>
* gcc.c (static_spec_functions): Add if-exists-else spec

19
gcc/alias.c
View File

@ -199,7 +199,7 @@ char *reg_known_equiv_p;
/* True when scanning insns from the start of the rtl to the
NOTE_INSN_FUNCTION_BEG note. */
static int copying_arguments;
static bool copying_arguments;
/* The splay-tree used to store the various alias set entries. */
static splay_tree alias_sets;
@ -781,9 +781,16 @@ find_base_value (src)
The test above is not sufficient because the scheduler may move
a copy out of an arg reg past the NOTE_INSN_FUNCTION_BEGIN. */
if ((regno >= FIRST_PSEUDO_REGISTER || fixed_regs[regno])
&& regno < reg_base_value_size
&& reg_base_value[regno])
return reg_base_value[regno];
&& regno < reg_base_value_size)
{
/* 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])
return new_reg_base_value[regno];
if (reg_base_value[regno])
return reg_base_value[regno];
}
return src;
@ -2744,7 +2751,7 @@ init_alias_analysis ()
/* We're at the start of the function each iteration through the
loop, so we're copying arguments. */
copying_arguments = 1;
copying_arguments = true;
/* Wipe the potential alias information clean for this pass. */
memset ((char *) new_reg_base_value, 0, reg_base_value_size * sizeof (rtx));
@ -2834,7 +2841,7 @@ init_alias_analysis ()
}
else if (GET_CODE (insn) == NOTE
&& NOTE_LINE_NUMBER (insn) == NOTE_INSN_FUNCTION_BEG)
copying_arguments = 0;
copying_arguments = false;
}
/* Now propagate values from new_reg_base_value to reg_base_value. */