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nir: add nir_block_get_following_loop() helper

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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Connor Abbott 2015-05-08 13:17:10 -04:00 • committed by Kenneth Graunke
parent f649afc9dd
commit 89dc0626bd
2 changed files with 18 additions and 0 deletions
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16
src/glsl/nir/nir.c
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@ -1335,6 +1335,22 @@ nir_block_get_following_if(nir_block *block)
return nir_cf_node_as_if(next_node);
}
nir_loop *
nir_block_get_following_loop(nir_block *block)
{
if (exec_node_is_tail_sentinel(&block->cf_node.node))
return NULL;
if (nir_cf_node_is_last(&block->cf_node))
return NULL;
nir_cf_node *next_node = nir_cf_node_next(&block->cf_node);
if (next_node->type != nir_cf_node_loop)
return NULL;
return nir_cf_node_as_loop(next_node);
}
static bool
index_block(nir_block *block, void *state)
{

2
src/glsl/nir/nir.h
View file

@ -1732,6 +1732,8 @@ bool nir_foreach_block_reverse(nir_function_impl *impl, nir_foreach_block_cb cb,
*/
nir_if *nir_block_get_following_if(nir_block *block);
nir_loop *nir_block_get_following_loop(nir_block *block);
void nir_index_local_regs(nir_function_impl *impl);
void nir_index_global_regs(nir_shader *shader);
void nir_index_ssa_defs(nir_function_impl *impl);