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nir: Add a couple helpers for phis and cursors

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Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8872>
This commit is contained in:
Jason Ekstrand 2021-02-04 10:38:21 -06:00 • committed by Marge Bot
parent 6dfdde149e
commit 6413e67591
1 changed files with 23 additions and 0 deletions
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23
src/compiler/nir/nir.h
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@ -2700,6 +2700,19 @@ nir_block_ends_in_jump(nir_block *block)
#define nir_foreach_instr_reverse_safe(instr, block) \
foreach_list_typed_reverse_safe(nir_instr, instr, node, &(block)->instr_list)
static inline nir_phi_instr *
nir_block_last_phi_instr(nir_block *block)
{
nir_phi_instr *last_phi = NULL;
nir_foreach_instr(instr, block) {
if (instr->type == nir_instr_type_phi)
last_phi = nir_instr_as_phi(instr);
else
return last_phi;
}
return last_phi;
}
typedef enum {
nir_selection_control_none = 0x0,
nir_selection_control_flatten = 0x1,
@ -3662,6 +3675,16 @@ nir_after_instr(nir_instr *instr)
return cursor;
}
static inline nir_cursor
nir_before_block_after_phis(nir_block *block)
{
nir_phi_instr *last_phi = nir_block_last_phi_instr(block);
if (last_phi)
return nir_after_instr(&last_phi->instr);
else
return nir_before_block(block);
}
static inline nir_cursor
nir_after_block_before_jump(nir_block *block)
{