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llvmpipe: replace if/then with switch in llvmpipe_nir_fn_is_linear_compat() 

To simplify the logic a bit.

Signed-off-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17062>
This commit is contained in:
Brian Paul 2022-06-02 12:38:41 -06:00
parent 3e50112861
commit 2d4473c2ac
1 changed files with 12 additions and 7 deletions
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19
src/gallium/drivers/llvmpipe/lp_state_fs_analysis.c
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@ -259,13 +259,13 @@ llvmpipe_nir_fn_is_linear_compat(const struct nir_shader *shader,
}
case nir_instr_type_alu: {
const nir_alu_instr *alu = nir_instr_as_alu(instr);
if (alu->op != nir_op_mov &&
alu->op != nir_op_vec2 &&
alu->op != nir_op_vec4 &&
alu->op != nir_op_fmul)
return false;
if (alu->op == nir_op_fmul) {
switch (alu->op) {
case nir_op_mov:
case nir_op_vec2:
case nir_op_vec4:
// these instructions are OK
break;
case nir_op_fmul: {
unsigned num_src = nir_op_infos[alu->op].num_inputs;;
for (unsigned s = 0; s < num_src; s++) {
/* If the MUL uses immediate values, the values must
@ -285,6 +285,11 @@ llvmpipe_nir_fn_is_linear_compat(const struct nir_shader *shader,
}
}
}
break;
}
default:
// disallowed instruction
return false;
}
break;
}