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nir/search: Fix possible NULL dereference in is_fsign

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Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Fixes: 09705747d7 ("nir/algebraic: Reassociate fadd into fmul in DPH-like pattern")
This commit is contained in:
Ian Romanick 2019-07-15 15:18:47 -07:00
parent da10fa9d63
commit 050e4e28bf
1 changed files with 1 additions and 1 deletions
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src/compiler/nir/nir_search_helpers.h
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@ -209,7 +209,7 @@ is_fsign(nir_alu_instr *instr, unsigned src,
if (src_alu->op == nir_op_fneg)
src_alu = nir_src_as_alu_instr(src_alu->src[0].src);
return src_alu->op == nir_op_fsign;
return src_alu != NULL && src_alu->op == nir_op_fsign;
}
static inline bool