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nouveau: set lower_sub = true 

Subtractions are already implemented as additions anyway.

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Daniel Schürmann 2019-09-27 12:12:25 +02:00
parent ca1aa5d225
commit b3c1f601aa
3 changed files with 2 additions and 6 deletions
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5
src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
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@ -451,9 +451,6 @@ Converter::getOperation(nir_op op)
return OP_SIN;
case nir_op_fsqrt:
return OP_SQRT;
case nir_op_fsub:
case nir_op_isub:
return OP_SUB;
case nir_op_ftrunc:
return OP_TRUNC;
case nir_op_ixor:
@ -2817,8 +2814,6 @@ Converter::visit(nir_alu_instr *insn)
case nir_op_ushr:
case nir_op_fsin:
case nir_op_fsqrt:
case nir_op_fsub:
case nir_op_isub:
case nir_op_ftrunc:
case nir_op_ishl:
case nir_op_ixor: {

1
src/gallium/drivers/nouveau/nv50/nv50_screen.c
View File

@ -901,6 +901,7 @@ static const nir_shader_compiler_options nir_options = {
.lower_fpow = false,
.lower_uadd_carry = true,
.lower_usub_borrow = true,
.lower_sub = true,
.lower_ffract = true,
.lower_pack_half_2x16 = true,
.lower_pack_unorm_2x16 = true,

2
src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
View File

@ -939,7 +939,7 @@ static const nir_shader_compiler_options nir_options = {
.lower_usub_borrow = true, // TODO
.lower_mul_high = false,
.lower_negate = false,
.lower_sub = false, // TODO
.lower_sub = true,
.lower_scmp = true, // TODO: not implemented yet
.lower_idiv = true,
.lower_isign = false, // TODO