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[PR99454] LRA: Process separately 'g' and digital constraints > 9 in process_address_1

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gcc/ChangeLog:

	PR target/99454
	* lra-constraints.c (process_address_1): Process constraint 'g'
	separately and digital constraints containing more one digit.

gcc/testsuite/ChangeLog:

	PR target/99454
	* gcc.target/i386/pr99454.c: New.
This commit is contained in:
Vladimir N. Makarov 2021-03-09 10:57:21 -05:00
parent 9f8be03500
commit fb5d9e8361
2 changed files with 51 additions and 5 deletions
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13
gcc/lra-constraints.c
View File

@ -3452,10 +3452,13 @@ process_address_1 (int nop, bool check_only_p,
constraint
= skip_contraint_modifiers (curr_static_id->operand[nop].constraint);
if ('0' <= constraint[0] && constraint[0] <= '9')
constraint
= skip_contraint_modifiers (curr_static_id->operand
[constraint[0] - '0'].constraint);
if (IN_RANGE (constraint[0], '0', '9'))
{
char *end;
unsigned long dup = strtoul (constraint, &end, 10);
constraint
= skip_contraint_modifiers (curr_static_id->operand[dup].constraint);
}
cn = lookup_constraint (constraint);
if (insn_extra_address_constraint (cn)
/* When we find an asm operand with an address constraint that
@ -3472,7 +3475,7 @@ process_address_1 (int nop, bool check_only_p,
i.e. bcst_mem_operand in i386 backend. */
else if (MEM_P (mem)
&& !(INSN_CODE (curr_insn) < 0
&& (cn == CONSTRAINT__UNKNOWN
&& ((cn == CONSTRAINT__UNKNOWN && *constraint != 'g')
|| (get_constraint_type (cn) == CT_FIXED_FORM
&& constraint_satisfied_p (op, cn)))))
decompose_mem_address (&ad, mem);

43
gcc/testsuite/gcc.target/i386/pr99454.c Normal file
View File

@ -0,0 +1,43 @@
/* { dg-do compile } */
/* { dg-options "-O -w" } */
struct skb_shared_info {
short gso_size;
};
enum { NETDEV_TX_OK };
struct iphdr {
short tot_len;
int daddr;
};
int tg3_tso_bug();
int netdev_priv();
int skb_cow_head();
int tcp_hdrlen__builtin_expect();
struct iphdr *ip_hdr();
int _tg3_flag();
int tg3_tso_bug_gso_check();
int
tg3_start_xmit() {
int *tp = netdev_priv();
int mss, tnapi;
struct iphdr *iph;
tnapi = mss = ((struct skb_shared_info *)0)->gso_size;
if (mss) {
int hdr_len;
if (skb_cow_head())
iph = ip_hdr();
hdr_len = tcp_hdrlen__builtin_expect() && _tg3_flag();
if (tg3_tso_bug_gso_check())
return tg3_tso_bug(tp, tnapi);
iph->tot_len = mss + hdr_len;
if (_tg3_flag(tp) || tp)
;
else
asm("" : : "g"(iph->daddr));
}
return 0;
}