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v3d: Use the NIR lowering for isign instead of rolling our own.

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min/max instead of comparisons saves 2 instructions on
fs-sign-int.shader_test.
This commit is contained in:
Eric Anholt 2019-02-06 13:17:21 -08:00
parent 42d2cae907
commit 3f22b35a43
1 changed files with 1 additions and 16 deletions
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17
src/broadcom/compiler/nir_to_vir.c
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@ -547,19 +547,6 @@ ntq_fsign(struct v3d_compile *c, struct qreg src)
return vir_MOV(c, t);
}
static struct qreg
ntq_isign(struct v3d_compile *c, struct qreg src)
{
struct qreg t = vir_get_temp(c);
vir_MOV_dest(c, t, vir_uniform_ui(c, 0));
vir_PF(c, vir_MOV(c, src), V3D_QPU_PF_PUSHZ);
vir_MOV_cond(c, V3D_QPU_COND_IFNA, t, vir_uniform_ui(c, 1));
vir_PF(c, vir_MOV(c, src), V3D_QPU_PF_PUSHN);
vir_MOV_cond(c, V3D_QPU_COND_IFA, t, vir_uniform_ui(c, -1));
return vir_MOV(c, t);
}
static void
emit_fragcoord_input(struct v3d_compile *c, int attr)
{
@ -1025,9 +1012,6 @@ ntq_emit_alu(struct v3d_compile *c, nir_alu_instr *instr)
case nir_op_fsign:
result = ntq_fsign(c, src[0]);
break;
case nir_op_isign:
result = ntq_isign(c, src[0]);
break;
case nir_op_fabs: {
result = vir_FMOV(c, src[0]);
@ -2476,6 +2460,7 @@ const nir_shader_compiler_options v3d_nir_options = {
.lower_fsat = true,
.lower_fsqrt = true,
.lower_ifind_msb = true,
.lower_isign = true,
.lower_ldexp = true,
.lower_mul_high = true,
.lower_wpos_pntc = true,