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v3d: Move the "Find the ALU instruction generating our bool" out of bcsel. 

This will be reused for if statements.
This commit is contained in:
Eric Anholt 2018-12-31 13:05:06 -08:00
parent c3ae0aa264
commit 2e0433b687
1 changed files with 9 additions and 6 deletions
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15
src/broadcom/compiler/nir_to_vir.c
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@ -559,6 +559,14 @@ ntq_emit_comparison(struct v3d_compile *c,
return true;
}
static struct nir_alu_instr *
ntq_get_alu_parent(nir_src src)
{
if (!src.is_ssa || src.ssa->parent_instr->type != nir_instr_type_alu)
return NULL;
return nir_instr_as_alu(src.ssa->parent_instr);
}
/**
* Attempts to fold a comparison generating a boolean result into the
* condition code for selecting between two values, instead of comparing the
@ -567,12 +575,7 @@ ntq_emit_comparison(struct v3d_compile *c,
static struct qreg ntq_emit_bcsel(struct v3d_compile *c, nir_alu_instr *instr,
struct qreg *src)
{
if (!instr->src[0].src.is_ssa)
goto out;
if (instr->src[0].src.ssa->parent_instr->type != nir_instr_type_alu)
goto out;
nir_alu_instr *compare =
nir_instr_as_alu(instr->src[0].src.ssa->parent_instr);
nir_alu_instr *compare = ntq_get_alu_parent(instr->src[0].src);
if (!compare)
goto out;