mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2025-12-28 00:53:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

cbe: fixup casting to/from 128 bit int types, as they may not have compiler support

Browse Source
This commit is contained in:
kcbanner 2022-12-09 01:58:04 -05:00
parent a43fdc1620
commit e6ef579609
1 changed files with 34 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/codegen/c.zig
View File

@ -3262,11 +3262,20 @@ fn airLoad(f: *Function, inst: Air.Inst.Index) !CValue {
try f.object.dg.renderTypeForBuiltinFnName(writer, field_ty);
try writer.writeAll("((");
try f.renderTypecast(writer, field_ty);
try writer.writeAll(")zig_shr_");
try writer.writeByte(')');
const cant_cast = host_ty.isInt() and host_ty.bitSize(target) > 64;
if (cant_cast) {
if (field_ty.bitSize(target) > 64) return f.fail("TODO: C backend: implement casting between types > 64 bits", .{});
try writer.writeAll("zig_lo_");
try f.object.dg.renderTypeForBuiltinFnName(writer, host_ty);
try writer.writeByte('(');
}
try writer.writeAll("zig_shr_");
try f.object.dg.renderTypeForBuiltinFnName(writer, host_ty);
try writer.writeByte('(');
try f.writeCValueDeref(writer, operand);
try writer.print(", {})", .{try f.fmtIntLiteral(bit_offset_ty, bit_offset_val)});
if (cant_cast) try writer.writeByte(')');
try f.object.dg.renderBuiltinInfo(writer, field_ty, .Bits);
try writer.writeByte(')');
} else {
@ -3539,15 +3548,26 @@ fn airStore(f: *Function, inst: Air.Inst.Index) !CValue {
try f.writeCValueDeref(writer, ptr_val);
try writer.print(", {x}), zig_shl_", .{try f.fmtIntLiteral(host_ty, mask_val)});
try f.object.dg.renderTypeForBuiltinFnName(writer, host_ty);
try writer.writeAll("((");
try f.renderTypecast(writer, host_ty);
try writer.writeByte(')');
try writer.writeByte('(');
const cant_cast = host_ty.isInt() and host_ty.bitSize(target) > 64;
if (cant_cast) {
if (src_ty.bitSize(target) > 64) return f.fail("TODO: C backend: implement casting between types > 64 bits", .{});
try writer.writeAll("zig_as_");
try f.object.dg.renderTypeForBuiltinFnName(writer, host_ty);
try writer.writeAll("(0, ");
} else {
try writer.writeByte('(');
try f.renderTypecast(writer, host_ty);
try writer.writeByte(')');
}
if (src_ty.isPtrAtRuntime()) {
try writer.writeByte('(');
try f.renderTypecast(writer, Type.usize);
try writer.writeByte(')');
}
try f.writeCValue(writer, src_val, .Other);
if (cant_cast) try writer.writeByte(')');
try writer.print(", {}))", .{try f.fmtIntLiteral(bit_offset_ty, bit_offset_val)});
} else {
try f.writeCValueDeref(writer, ptr_val);
@ -5236,13 +5256,22 @@ fn airStructFieldVal(f: *Function, inst: Air.Inst.Index) !CValue {
try f.object.dg.renderTypeForBuiltinFnName(writer, field_int_ty);
try writer.writeAll("((");
try f.renderTypecast(writer, field_int_ty);
try writer.writeAll(")zig_shr_");
try writer.writeByte(')');
const cant_cast = int_info.bits > 64;
if (cant_cast) {
if (field_int_ty.bitSize(target) > 64) return f.fail("TODO: C backend: implement casting between types > 64 bits", .{});
try writer.writeAll("zig_lo_");
try f.object.dg.renderTypeForBuiltinFnName(writer, struct_ty);
try writer.writeByte('(');
}
try writer.writeAll("zig_shr_");
try f.object.dg.renderTypeForBuiltinFnName(writer, struct_ty);
try writer.writeByte('(');
try f.writeCValue(writer, struct_byval, .Other);
try writer.writeAll(", ");
try f.object.dg.renderValue(writer, bit_offset_ty, bit_offset_val, .FunctionArgument);
try writer.writeByte(')');
if (cant_cast) try writer.writeByte(')');
try f.object.dg.renderBuiltinInfo(writer, field_int_ty, .Bits);
try writer.writeAll(");\n");
if (inst_ty.eql(field_int_ty, f.object.dg.module)) return temp_local;