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stage2 llvm: implement lowerParentPtr for int_{u,i}64

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This commit is contained in:
Veikka Tuominen 2022-03-10 19:52:03 +02:00
parent e0fb0770d1
commit 673fafc231
1 changed files with 25 additions and 7 deletions
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32
src/codegen/llvm.zig
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@ -1472,12 +1472,12 @@ pub const DeclGen = struct {
return llvm_int.constIntToPtr(try dg.llvmType(tv.ty));
},
.field_ptr, .opt_payload_ptr, .eu_payload_ptr => {
const parent = try dg.lowerParentPtr(tv.val);
const parent = try dg.lowerParentPtr(tv.val, tv.ty);
return parent.llvm_ptr.constBitCast(try dg.llvmType(tv.ty));
},
.elem_ptr => {
const elem_ptr = tv.val.castTag(.elem_ptr).?.data;
const parent = try dg.lowerParentPtr(elem_ptr.array_ptr);
const parent = try dg.lowerParentPtr(elem_ptr.array_ptr, tv.ty);
const llvm_usize = try dg.llvmType(Type.usize);
if (parent.llvm_ptr.typeOf().getElementType().getTypeKind() == .Array) {
const indices: [2]*const llvm.Value = .{
@ -2683,7 +2683,7 @@ pub const DeclGen = struct {
};
}
fn lowerParentPtr(dg: *DeclGen, ptr_val: Value) Error!ParentPtr {
fn lowerParentPtr(dg: *DeclGen, ptr_val: Value, base_ty: Type) Error!ParentPtr {
switch (ptr_val.tag()) {
.decl_ref_mut => {
const decl = ptr_val.castTag(.decl_ref_mut).?.data.decl;
@ -2697,9 +2697,27 @@ pub const DeclGen = struct {
const decl = ptr_val.castTag(.variable).?.data.owner_decl;
return dg.lowerParentPtrDecl(ptr_val, decl);
},
.int_i64 => {
const int = ptr_val.castTag(.int_i64).?.data;
const llvm_usize = try dg.llvmType(Type.usize);
const llvm_int = llvm_usize.constInt(@bitCast(u64, int), .False);
return ParentPtr{
.llvm_ptr = llvm_int.constIntToPtr(try dg.llvmType(base_ty)),
.ty = base_ty,
};
},
.int_u64 => {
const int = ptr_val.castTag(.int_u64).?.data;
const llvm_usize = try dg.llvmType(Type.usize);
const llvm_int = llvm_usize.constInt(int, .False);
return ParentPtr{
.llvm_ptr = llvm_int.constIntToPtr(try dg.llvmType(base_ty)),
.ty = base_ty,
};
},
.field_ptr => {
const field_ptr = ptr_val.castTag(.field_ptr).?.data;
const parent = try dg.lowerParentPtr(field_ptr.container_ptr);
const parent = try dg.lowerParentPtr(field_ptr.container_ptr, base_ty);
const field_index = @intCast(u32, field_ptr.field_index);
const llvm_u32 = dg.context.intType(32);
const target = dg.module.getTarget();
@ -2753,7 +2771,7 @@ pub const DeclGen = struct {
},
.elem_ptr => {
const elem_ptr = ptr_val.castTag(.elem_ptr).?.data;
const parent = try dg.lowerParentPtr(elem_ptr.array_ptr);
const parent = try dg.lowerParentPtr(elem_ptr.array_ptr, base_ty);
const llvm_usize = try dg.llvmType(Type.usize);
const indices: [2]*const llvm.Value = .{
llvm_usize.constInt(0, .False),
@ -2766,7 +2784,7 @@ pub const DeclGen = struct {
},
.opt_payload_ptr => {
const opt_payload_ptr = ptr_val.castTag(.opt_payload_ptr).?.data;
const parent = try dg.lowerParentPtr(opt_payload_ptr);
const parent = try dg.lowerParentPtr(opt_payload_ptr, base_ty);
var buf: Type.Payload.ElemType = undefined;
const payload_ty = parent.ty.optionalChild(&buf);
if (!payload_ty.hasRuntimeBits() or parent.ty.isPtrLikeOptional()) {
@ -2790,7 +2808,7 @@ pub const DeclGen = struct {
},
.eu_payload_ptr => {
const eu_payload_ptr = ptr_val.castTag(.eu_payload_ptr).?.data;
const parent = try dg.lowerParentPtr(eu_payload_ptr);
const parent = try dg.lowerParentPtr(eu_payload_ptr, base_ty);
const payload_ty = parent.ty.errorUnionPayload();
if (!payload_ty.hasRuntimeBits()) {
// In this case, we represent pointer to error union the same as pointer