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Add matrix_flatten - matrix[R, C]T -> [R*C]T

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gingerBill
2021-10-20 15:33:23 +01:00
parent 465c87bd5a
commit d3abc1a2b4
4 changed files with 106 additions and 9 deletions
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77
src/llvm_backend_expr.cpp
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@@ -517,6 +517,33 @@ LLVMValueRef lb_matrix_to_vector(lbProcedure *p, lbValue matrix) {
return matrix_vector;
}
LLVMValueRef lb_matrix_to_trimmed_vector(lbProcedure *p, lbValue m) {
Type *mt = base_type(m.type);
GB_ASSERT(mt->kind == Type_Matrix);
unsigned stride = cast(unsigned)matrix_type_stride_in_elems(mt);
unsigned row_count = cast(unsigned)mt->Matrix.row_count;
unsigned column_count = cast(unsigned)mt->Matrix.column_count;
auto columns = slice_make<LLVMValueRef>(permanent_allocator(), column_count);
LLVMValueRef vector = lb_matrix_to_vector(p, m);
unsigned mask_elems_index = 0;
auto mask_elems = slice_make<LLVMValueRef>(permanent_allocator(), row_count*column_count);
for (unsigned j = 0; j < column_count; j++) {
for (unsigned i = 0; i < row_count; i++) {
unsigned offset = stride*j + i;
mask_elems[mask_elems_index++] = lb_const_int(p->module, t_u32, offset).value;
}
}
LLVMValueRef mask = LLVMConstVector(mask_elems.data, cast(unsigned)mask_elems.count);
LLVMValueRef trimmed_vector = LLVMBuildShuffleVector(p->builder, vector, LLVMGetUndef(LLVMTypeOf(vector)), mask, "");
return trimmed_vector;
}
lbValue lb_emit_matrix_tranpose(lbProcedure *p, lbValue m, Type *type) {
if (is_type_array(m.type)) {
// no-op
@@ -573,6 +600,46 @@ lbValue lb_emit_matrix_tranpose(lbProcedure *p, lbValue m, Type *type) {
return lb_addr_load(p, res);
}
lbValue lb_matrix_cast_vector_to_type(lbProcedure *p, LLVMValueRef vector, Type *type) {
lbAddr res = lb_add_local_generated(p, type, true);
LLVMValueRef res_ptr = res.addr.value;
unsigned alignment = cast(unsigned)gb_max(type_align_of(type), lb_alignof(LLVMTypeOf(vector)));
LLVMSetAlignment(res_ptr, alignment);
res_ptr = LLVMBuildPointerCast(p->builder, res_ptr, LLVMPointerType(LLVMTypeOf(vector), 0), "");
LLVMBuildStore(p->builder, vector, res_ptr);
return lb_addr_load(p, res);
}
lbValue lb_emit_matrix_flatten(lbProcedure *p, lbValue m, Type *type) {
if (is_type_array(m.type)) {
// no-op
m.type = type;
return m;
}
Type *mt = base_type(m.type);
GB_ASSERT(mt->kind == Type_Matrix);
if (lb_matrix_elem_simple(mt)) {
LLVMValueRef vector = lb_matrix_to_trimmed_vector(p, m);
return lb_matrix_cast_vector_to_type(p, vector, type);
}
lbAddr res = lb_add_local_generated(p, type, true);
i64 row_count = mt->Matrix.row_count;
i64 column_count = mt->Matrix.column_count;
for (i64 j = 0; j < column_count; j++) {
for (i64 i = 0; i < row_count; i++) {
lbValue src = lb_emit_matrix_ev(p, m, i, j);
lbValue dst = lb_emit_matrix_epi(p, res.addr, i, j);
lb_emit_store(p, dst, src);
}
}
return lb_addr_load(p, res);
}
lbValue lb_emit_outer_product(lbProcedure *p, lbValue a, lbValue b, Type *type) {
Type *mt = base_type(type);
@@ -737,16 +804,8 @@ lbValue lb_emit_matrix_mul_vector(lbProcedure *p, lbValue lhs, lbValue rhs, Type
vector = llvm_vector_add(p, vector, product);
}
}
lbAddr res = lb_add_local_generated(p, type, true);
LLVMValueRef res_ptr = res.addr.value;
unsigned alignment = cast(unsigned)gb_max(type_align_of(type), lb_alignof(LLVMTypeOf(vector)));
LLVMSetAlignment(res_ptr, alignment);
res_ptr = LLVMBuildPointerCast(p->builder, res_ptr, LLVMPointerType(LLVMTypeOf(vector), 0), "");
LLVMBuildStore(p->builder, vector, res_ptr);
return lb_addr_load(p, res);
return lb_matrix_cast_vector_to_type(p, vector, type);
}
lbAddr res = lb_add_local_generated(p, type, true);