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spirv: lower ptrtoint & ignore dbg_inline instructions

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This commit is contained in:
Ali Chraghi 2023-05-15 22:04:42 +03:30
parent f8de4db873
commit 6fca3f8b72
2 changed files with 23 additions and 8 deletions
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27
src/codegen/spirv.zig
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@ -1724,6 +1724,7 @@ pub const DeclGen = struct {
.bitcast => try self.airBitcast(inst),
.intcast, .trunc => try self.airIntcast(inst),
.ptrtoint => try self.airPtrToInt(inst),
.int_to_float => try self.airIntToFloat(inst),
.float_to_int => try self.airFloatToInt(inst),
.not => try self.airNot(inst),
@ -1786,10 +1787,12 @@ pub const DeclGen = struct {
.call_never_tail => try self.airCall(inst, .never_tail),
.call_never_inline => try self.airCall(inst, .never_inline),
.dbg_var_ptr => return,
.dbg_var_val => return,
.dbg_block_begin => return,
.dbg_block_end => return,
.dbg_inline_begin => return,
.dbg_inline_end => return,
.dbg_var_ptr => return,
.dbg_var_val => return,
.dbg_block_begin => return,
.dbg_block_end => return,
// zig fmt: on
else => |tag| return self.todo("implement AIR tag {s}", .{@tagName(tag)}),
@ -2131,6 +2134,22 @@ pub const DeclGen = struct {
return result_id;
}
fn airPtrToInt(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;
const un_op = self.air.instructions.items(.data)[inst].un_op;
const operand_id = try self.resolve(un_op);
const result_type_id = try self.resolveTypeId(Type.usize);
const result_id = self.spv.allocId();
try self.func.body.emit(self.spv.gpa, .OpConvertPtrToU, .{
.id_result_type = result_type_id,
.id_result = result_id,
.pointer = operand_id,
});
return result_id;
}
fn airIntToFloat(self: *DeclGen, inst: Air.Inst.Index) !?IdRef {
if (self.liveness.isUnused(inst)) return null;

4
test/behavior/cast.zig
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@ -1285,14 +1285,10 @@ test "implicit cast *[0]T to E![]const u8" {
var global_array: [4]u8 = undefined;
test "cast from array reference to fn: comptime fn ptr" {
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
const f = @ptrCast(*align(1) const fn () callconv(.C) void, &global_array);
try expect(@ptrToInt(f) == @ptrToInt(&global_array));
}
test "cast from array reference to fn: runtime fn ptr" {
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
var f = @ptrCast(*align(1) const fn () callconv(.C) void, &global_array);
try expect(@ptrToInt(f) == @ptrToInt(&global_array));
}