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tcg: Massage process_op_defs()

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In preparation of introducing paired registers,
massage a bit process_op_defs()'s switch case.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
[PMD: Split from bigger patch, 1/3]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221219220925.79218-2-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2022-12-19 23:09:23 +01:00 committed by Richard Henderson
parent 568e010b89
commit 8940ea0d32
1 changed files with 34 additions and 27 deletions
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61
tcg/tcg.c
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@ -2012,7 +2012,7 @@ static void process_op_defs(TCGContext *s)
for (op = 0; op < NB_OPS; op++) { for (op = 0; op < NB_OPS; op++) {
TCGOpDef *def = &tcg_op_defs[op]; TCGOpDef *def = &tcg_op_defs[op];
const TCGTargetOpDef *tdefs; const TCGTargetOpDef *tdefs;
int i, nb_args; int i, o, nb_args;
if (def->flags & TCG_OPF_NOT_PRESENT) { if (def->flags & TCG_OPF_NOT_PRESENT) {
continue; continue;
@ -2034,53 +2034,60 @@ static void process_op_defs(TCGContext *s)
for (i = 0; i < nb_args; i++) { for (i = 0; i < nb_args; i++) {
const char *ct_str = tdefs->args_ct_str[i]; const char *ct_str = tdefs->args_ct_str[i];
bool input_p = i >= def->nb_oargs;
/* Incomplete TCGTargetOpDef entry. */ /* Incomplete TCGTargetOpDef entry. */
tcg_debug_assert(ct_str != NULL); tcg_debug_assert(ct_str != NULL);
while (*ct_str != '\0') { switch (*ct_str) {
switch(*ct_str) { case '0' ... '9':
case '0' ... '9': o = *ct_str - '0';
{ tcg_debug_assert(input_p);
int oarg = *ct_str - '0'; tcg_debug_assert(o < def->nb_oargs);
tcg_debug_assert(ct_str == tdefs->args_ct_str[i]); tcg_debug_assert(def->args_ct[o].regs != 0);
tcg_debug_assert(oarg < def->nb_oargs); tcg_debug_assert(!def->args_ct[o].oalias);
tcg_debug_assert(def->args_ct[oarg].regs != 0); def->args_ct[i] = def->args_ct[o];
def->args_ct[i] = def->args_ct[oarg]; /* The output sets oalias. */
/* The output sets oalias. */ def->args_ct[o].oalias = 1;
def->args_ct[oarg].oalias = true; def->args_ct[o].alias_index = i;
def->args_ct[oarg].alias_index = i; /* The input sets ialias. */
/* The input sets ialias. */ def->args_ct[i].ialias = 1;
def->args_ct[i].ialias = true; def->args_ct[i].alias_index = o;
def->args_ct[i].alias_index = oarg; tcg_debug_assert(ct_str[1] == '\0');
} continue;
ct_str++;
break; case '&':
case '&': tcg_debug_assert(!input_p);
def->args_ct[i].newreg = true; def->args_ct[i].newreg = true;
ct_str++; ct_str++;
break; break;
}
do {
switch (*ct_str) {
case 'i': case 'i':
def->args_ct[i].ct |= TCG_CT_CONST; def->args_ct[i].ct |= TCG_CT_CONST;
ct_str++;
break; break;
/* Include all of the target-specific constraints. */ /* Include all of the target-specific constraints. */
#undef CONST #undef CONST
#define CONST(CASE, MASK) \ #define CONST(CASE, MASK) \
case CASE: def->args_ct[i].ct |= MASK; ct_str++; break; case CASE: def->args_ct[i].ct |= MASK; break;
#define REGS(CASE, MASK) \ #define REGS(CASE, MASK) \
case CASE: def->args_ct[i].regs |= MASK; ct_str++; break; case CASE: def->args_ct[i].regs |= MASK; break;
#include "tcg-target-con-str.h" #include "tcg-target-con-str.h"
#undef REGS #undef REGS
#undef CONST #undef CONST
default: default:
case '0' ... '9':
case '&':
/* Typo in TCGTargetOpDef constraint. */ /* Typo in TCGTargetOpDef constraint. */
g_assert_not_reached(); g_assert_not_reached();
} }
} } while (*++ct_str != '\0');
} }
/* TCGTargetOpDef entry with too much information? */ /* TCGTargetOpDef entry with too much information? */