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tree-ssa-live.c (calculate_live_on_entry): Ignore virtual variables.

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* tree-ssa-live.c (calculate_live_on_entry): Ignore virtual
        variables.  Simplify slightly by using USE_OP/DEF_OP instead
        of USE_OP_PTR/DEF_OP_PTR and dereferencing the result.

From-SVN: r81832
This commit is contained in:
Jeff Law 2004-05-13 23:08:55 -06:00 • committed by Jeff Law
parent 90afe2c9f5
commit 02ea8d06bf
2 changed files with 9 additions and 30 deletions
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4
gcc/ChangeLog
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@ -61,6 +61,10 @@
2004-05-13 Jeff Law <law@redhat.com>
* tree-ssa-live.c (calculate_live_on_entry): Ignore virtual
variables. Simplify slightly by using USE_OP/DEF_OP instead
of USE_OP_PTR/DEF_OP_PTR and dereferencing the result.
* tree-into-ssa.c (compute_global_livein): Use EXECUTE_IF_SET_IN_BITMAP
rather than iterating through the blocks testing each bit in
livein to initialize the worklist.

35
gcc/tree-ssa-live.c
View file

@ -551,12 +551,10 @@ calculate_live_on_entry (var_map map)
basic_block bb;
bitmap saw_def;
tree phi, var, stmt;
tree *vec;
tree op;
edge e;
varray_type stack;
block_stmt_iterator bsi;
vuse_optype vuses;
vdef_optype vdefs;
use_optype uses;
def_optype defs;
stmt_ann_t ann;
@ -610,39 +608,16 @@ calculate_live_on_entry (var_map map)
num = NUM_USES (uses);
for (i = 0; i < num; i++)
{
vec = USE_OP_PTR (uses, i);
add_livein_if_notdef (live, saw_def, *vec, bb);
}
vuses = VUSE_OPS (ann);
num = NUM_VUSES (vuses);
for (i = 0; i < num; i++)
{
var = VUSE_OP (vuses, i);
add_livein_if_notdef (live, saw_def, var, bb);
}
vdefs = VDEF_OPS (ann);
num = NUM_VDEFS (vdefs);
for (i = 0; i < num; i++)
{
var = VDEF_OP (vdefs, i);
add_livein_if_notdef (live, saw_def, var, bb);
op = USE_OP (uses, i);
add_livein_if_notdef (live, saw_def, op, bb);
}
defs = DEF_OPS (ann);
num = NUM_DEFS (defs);
for (i = 0; i < num; i++)
{
vec = DEF_OP_PTR (defs, i);
set_if_valid (map, saw_def, *vec);
}
num = NUM_VDEFS (vdefs);
for (i = 0; i < num; i++)
{
var = VDEF_RESULT (vdefs, i);
set_if_valid (map, saw_def, var);
op = DEF_OP (defs, i);
set_if_valid (map, saw_def, op);
}
}
}