motiejus/zig
1
Fork 0
Code Releases Activity

stage2: optimize size of optional slices

Browse Source
This commit is contained in:
Veikka Tuominen
2022-10-24 14:41:22 +03:00
parent 9db293492b
commit dd437ae399
5 changed files with 45 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/codegen/llvm.zig
View File

@@ -6316,18 +6316,24 @@ pub const FuncGen = struct {
const operand_ty = self.air.typeOf(un_op);
const optional_ty = if (operand_is_ptr) operand_ty.childType() else operand_ty;
const optional_llvm_ty = try self.dg.lowerType(optional_ty);
var buf: Type.Payload.ElemType = undefined;
const payload_ty = optional_ty.optionalChild(&buf);
if (optional_ty.optionalReprIsPayload()) {
const loaded = if (operand_is_ptr)
self.builder.buildLoad(optional_llvm_ty, operand, "")
else
operand;
if (payload_ty.isSlice()) {
const slice_ptr = self.builder.buildExtractValue(loaded, 0, "");
var slice_buf: Type.SlicePtrFieldTypeBuffer = undefined;
const ptr_ty = try self.dg.lowerType(payload_ty.slicePtrFieldType(&slice_buf));
return self.builder.buildICmp(pred, slice_ptr, ptr_ty.constNull(), "");
}
return self.builder.buildICmp(pred, loaded, optional_llvm_ty.constNull(), "");
}
comptime assert(optional_layout_version == 3);
var buf: Type.Payload.ElemType = undefined;
const payload_ty = optional_ty.optionalChild(&buf);
if (!payload_ty.hasRuntimeBitsIgnoreComptime()) {
const loaded = if (operand_is_ptr)
self.builder.buildLoad(optional_llvm_ty, operand, "")