Commit 89f2ecd4 authored by Christoph Mallon's avatar Christoph Mallon
Browse files

x87: Use the symbolic name 'X87_NOT_IN_STACK'.

parent b1d0f056
......@@ -92,7 +92,7 @@ static void sim_amd64_fucomi(x87_state *const state, ir_node *const node)
ir_node *const op0 = get_irn_n(node, n_amd64_fucomi_left);
ir_node *const op1 = get_irn_n(node, n_amd64_fucomi_right);
unsigned const additional_pop = x86_sim_x87_fucom(state, node, op0, op1);
if (additional_pop != ~0u)
if (additional_pop != X87_NOT_ON_STACK)
x86_x87_create_fpop(state, node, additional_pop);
}
......
......@@ -204,7 +204,7 @@ static void x87_fxch(x87_state *state, unsigned pos)
* @param state the x87 state
* @param node the node to find
* @return the stack position where the node is stacked
* or ~0u if the node was not found
* or X87_NOT_ON_STACK if the node was not found
*/
static unsigned x87_on_stack(x87_state const *const state,
ir_node const *const node)
......@@ -213,7 +213,7 @@ static unsigned x87_on_stack(x87_state const *const state,
if (x87_get_st_node(state, i) == node)
return i;
}
return ~0u;
return X87_NOT_ON_STACK;
}
static unsigned x87_reg_on_stack(x87_state const *const state,
......@@ -223,7 +223,7 @@ static unsigned x87_reg_on_stack(x87_state const *const state,
if (x87_get_st_reg(state, i) == vreg_idx)
return i;
}
return ~0u;
return X87_NOT_ON_STACK;
}
static unsigned is_at_pos(x87_state const *const state,
......@@ -241,7 +241,7 @@ static unsigned is_at_pos(x87_state const *const state,
*/
void x86_x87_push(x87_state *const state, ir_node *const node)
{
assert(x87_on_stack(state, node) == ~0u && "double push");
assert(x87_on_stack(state, node) == X87_NOT_ON_STACK && "double push");
assert(state->depth < N_X87_REGS && "stack overrun");
++state->depth;
......@@ -340,7 +340,7 @@ static void move_to_pos(x87_state *const state, ir_node *const before,
ir_node *const val, unsigned const to)
{
unsigned const from = x87_on_stack(state, val);
assert(from != ~0u);
assert(from != X87_NOT_ON_STACK);
if (from != to) {
if (from != 0)
x87_create_fxch(state, before, from);
......@@ -1063,7 +1063,7 @@ unsigned x86_sim_x87_fucom(x87_state *const state, ir_node *const node,
attr->pop = pops != 0;
attr->reverse = reverse;
unsigned additional_pop = ~0u;
unsigned additional_pop = X87_NOT_ON_STACK;
if (pops > 0) {
x87_pop(state);
assert(pops == 1 || pops == 2);
......@@ -1091,7 +1091,7 @@ static void sim_ia32_FucomFnstsw(x87_state *const state, ir_node *const node)
ia32_x87_attr_t *const attr = get_ia32_x87_attr(node);
attr->attr.ins_permuted ^= attr->x87.reverse;
if (additional_pop != ~0u) {
if (additional_pop != X87_NOT_ON_STACK) {
if (additional_pop == 0) {
set_irn_op(node, op_ia32_FucomppFnstsw);
x87_pop(state);
......@@ -1109,7 +1109,7 @@ static void sim_ia32_Fucomi(x87_state *const state, ir_node *const node)
ia32_x87_attr_t *const attr = get_ia32_x87_attr(node);
attr->attr.ins_permuted ^= attr->x87.reverse;
if (additional_pop != ~0u)
if (additional_pop != X87_NOT_ON_STACK)
x86_x87_create_fpop(state, node, additional_pop);
}
......@@ -1238,7 +1238,7 @@ static void sim_be_Perm(x87_state *state, ir_node *irn)
/* collect old stack positions */
foreach_irn_in(irn, i, pred) {
unsigned const idx = x87_on_stack(state, pred);
assert(idx != ~0u);
assert(idx != X87_NOT_ON_STACK);
stack_pos[i] = idx;
}
/* now do the permutation */
......
......@@ -16,6 +16,8 @@
#include "be_types.h"
#include "firm_types.h"
#define X87_NOT_ON_STACK (~0U)
/** Attributes for x87 nodes. */
typedef struct x87_attr_t {
arch_register_t const *reg; /**< The explicit register operand. */
......
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