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nir/cf: add block_ends_in_jump()

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Signed-off-by: Connor Abbott <connor.w.abbott@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Connor Abbott 2015-07-21 19:54:24 -07:00 • committed by Kenneth Graunke
parent 788d45cb47
commit f596e4021c
1 changed files with 8 additions and 0 deletions
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8
src/glsl/nir/nir_control_flow.c
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@ -293,6 +293,14 @@ move_successors(nir_block *source, nir_block *dest)
link_blocks(dest, succ1, succ2);
}
static bool
block_ends_in_jump(nir_block *block)
{
return !exec_list_is_empty(&block->instr_list) &&
nir_block_last_instr(block)->type == nir_instr_type_jump;
}
/* Given a basic block with no successors that has been inserted into the
* control flow tree, gives it the successors it would normally have assuming
* it doesn't end in a jump instruction. Also inserts phi sources with undefs