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nir/cf: Make a helper function for removing a predecessor.

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I need to do this in a second place, and I'd rather make a helper
function than cut and paste the code.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Kenneth Graunke 2015-09-03 00:31:19 -07:00
parent 6a67ede6b3
commit e2637db618
1 changed files with 11 additions and 5 deletions
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16
src/glsl/nir/nir_control_flow.c
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@ -60,6 +60,16 @@ block_add_pred(nir_block *block, nir_block *pred)
_mesa_set_add(block->predecessors, pred);
}
static inline void
block_remove_pred(nir_block *block, nir_block *pred)
{
struct set_entry *entry = _mesa_set_search(block->predecessors, pred);
assert(entry);
_mesa_set_remove(block->predecessors, entry);
}
static void
link_blocks(nir_block *pred, nir_block *succ1, nir_block *succ2)
{
@ -83,11 +93,7 @@ unlink_blocks(nir_block *pred, nir_block *succ)
pred->successors[1] = NULL;
}
struct set_entry *entry = _mesa_set_search(succ->predecessors, pred);
assert(entry);
_mesa_set_remove(succ->predecessors, entry);
block_remove_pred(succ, pred);
}
static void