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ac: implement AMD_gcn_shader extended instructions 

Co-authored-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Schürmann <daniel.schuermann@campus.tu-berlin.de>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Daniel Schürmann 2018-02-23 13:55:00 +01:00 committed by Bas Nieuwenhuizen
parent 68a6a3b51a
commit 18c7f1e041
1 changed files with 28 additions and 0 deletions
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28
src/amd/common/ac_nir_to_llvm.c
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@ -1603,6 +1603,10 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
case nir_op_unpack_half_2x16:
src_components = 1;
break;
case nir_op_cube_face_coord:
case nir_op_cube_face_index:
src_components = 3;
break;
default:
src_components = num_components;
break;
@ -2015,6 +2019,30 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
break;
}
case nir_op_cube_face_coord: {
src[0] = ac_to_float(&ctx->ac, src[0]);
LLVMValueRef results[2];
LLVMValueRef in[3];
for (unsigned chan = 0; chan < 3; chan++)
in[chan] = ac_llvm_extract_elem(&ctx->ac, src[0], chan);
results[0] = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.cubetc",
ctx->ac.f32, in, 3, AC_FUNC_ATTR_READNONE);
results[1] = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.cubesc",
ctx->ac.f32, in, 3, AC_FUNC_ATTR_READNONE);
result = ac_build_gather_values(&ctx->ac, results, 2);
break;
}
case nir_op_cube_face_index: {
src[0] = ac_to_float(&ctx->ac, src[0]);
LLVMValueRef in[3];
for (unsigned chan = 0; chan < 3; chan++)
in[chan] = ac_llvm_extract_elem(&ctx->ac, src[0], chan);
result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.cubeid",
ctx->ac.f32, in, 3, AC_FUNC_ATTR_READNONE);
break;
}
default:
fprintf(stderr, "Unknown NIR alu instr: ");
nir_print_instr(&instr->instr, stderr);