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Add extra arg to cse_rtx_varies_p

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From-SVN: r38656
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Bernd Schmidt 2001-01-03 14:08:30 +00:00 committed by Bernd Schmidt
parent a338321ef9
commit 2be28ee21b
2 changed files with 8 additions and 4 deletions
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3
gcc/ChangeLog
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@ -8,6 +8,9 @@ Wed Jan 3 08:53:50 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* builtins.c (expand_builtin_return_addr): Don't use MEM_ALIAS_SET on
a REG rtx.
* cse.c (cse_rtx_varies_p): Accept additional FROM_ALIAS arg. All
callers changed.
2001-01-03 Alexandre Oliva <aoliva@redhat.com>
* combine.c (simplify_shift_const): Even if we're sign-extracting,

9
gcc/cse.c
View File

@ -656,7 +656,7 @@ static struct table_elt *insert PARAMS ((rtx, struct table_elt *, unsigned,
static void merge_equiv_classes PARAMS ((struct table_elt *,
struct table_elt *));
static void invalidate PARAMS ((rtx, enum machine_mode));
static int cse_rtx_varies_p PARAMS ((rtx));
static int cse_rtx_varies_p PARAMS ((rtx, int));
static void remove_invalid_refs PARAMS ((unsigned int));
static void remove_invalid_subreg_refs PARAMS ((unsigned int, unsigned int,
enum machine_mode));
@ -2691,8 +2691,9 @@ exp_equiv_p (x, y, validate, equal_values)
against certain constants or near-constants. */
static int
cse_rtx_varies_p (x)
cse_rtx_varies_p (x, from_alias)
register rtx x;
int from_alias ATTRIBUTE_UNUSED;
{
/* We need not check for X and the equivalence class being of the same
mode because if X is equivalent to a constant in some mode, it
@ -2745,7 +2746,7 @@ cse_rtx_varies_p (x)
return 0;
}
return rtx_varies_p (x, 0);
return rtx_varies_p (x, from_alias);
}
/* Canonicalize an expression:
@ -6595,7 +6596,7 @@ invalidate_skipped_set (dest, set, data)
a BLKmode or nonscalar memory reference or a reference to a
variable address. */
&& (MEM_IN_STRUCT_P (dest) || GET_MODE (dest) == BLKmode
|| cse_rtx_varies_p (XEXP (dest, 0))))
|| cse_rtx_varies_p (XEXP (dest, 0), 0)))
{
invalidate_memory ();
return;