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nir: add nir_instr_is_first() and nir_instr_is_last() helpers

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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Signed-off-by: Connor Abbott <connor.w.abbott@intel.com>
This commit is contained in:
Connor Abbott 2015-07-15 12:00:47 -07:00
parent 01cdbba341
commit 8eea091747
1 changed files with 12 additions and 0 deletions
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12
src/glsl/nir/nir.h
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@ -443,6 +443,18 @@ nir_instr_prev(nir_instr *instr)
return exec_node_data(nir_instr, prev, node);
}
static inline bool
nir_instr_is_first(nir_instr *instr)
{
return exec_node_is_head_sentinel(exec_node_get_prev(&instr->node));
}
static inline bool
nir_instr_is_last(nir_instr *instr)
{
return exec_node_is_tail_sentinel(exec_node_get_next(&instr->node));
}
typedef struct {
/** for debugging only, can be NULL */
const char* name;