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Merge pull request #20438 from pavelverigo/stage2-wasm-default-signextend

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stage2-wasm: store signed integers with extended sign bit + minor changes
This commit is contained in:
Luuk de Gram
2024-07-02 17:58:01 +02:00
committed by GitHub
parent 02b3d5b58a 1a951b49af
commit 1905137d0b
4 changed files with 251 additions and 411 deletions
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src/arch/wasm/CodeGen.zig
+197 -389
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@@ -11,10 +11,8 @@ const log = std.log.scoped(.codegen);
const codegen = @import("../../codegen.zig");
const Zcu = @import("../../Zcu.zig");
/// Deprecated.
const Module = Zcu;
const InternPool = @import("../../InternPool.zig");
const Decl = Module.Decl;
const Decl = Zcu.Decl;
const Type = @import("../../type.zig").Type;
const Value = @import("../../Value.zig");
const Compilation = @import("../../Compilation.zig");
@@ -674,7 +672,7 @@ local_index: u32 = 0,
/// Used to track which argument is being referenced in `airArg`.
arg_index: u32 = 0,
/// If codegen fails, an error messages will be allocated and saved in `err_msg`
err_msg: *Module.ErrorMsg,
err_msg: *Zcu.ErrorMsg,
/// List of all locals' types generated throughout this declaration
/// used to emit locals count at start of 'code' section.
locals: std.ArrayListUnmanaged(u8),
@@ -768,7 +766,7 @@ pub fn deinit(func: *CodeGen) void {
fn fail(func: *CodeGen, comptime fmt: []const u8, args: anytype) InnerError {
const mod = func.bin_file.base.comp.module.?;
const src_loc = func.decl.navSrcLoc(mod).upgrade(mod);
func.err_msg = try Module.ErrorMsg.create(func.gpa, src_loc, fmt, args);
func.err_msg = try Zcu.ErrorMsg.create(func.gpa, src_loc, fmt, args);
return error.CodegenFail;
}
@@ -992,7 +990,7 @@ fn addExtraAssumeCapacity(func: *CodeGen, extra: anytype) error{OutOfMemory}!u32
}
/// Using a given `Type`, returns the corresponding type
fn typeToValtype(ty: Type, mod: *Module) wasm.Valtype {
fn typeToValtype(ty: Type, mod: *Zcu) wasm.Valtype {
const target = mod.getTarget();
const ip = &mod.intern_pool;
return switch (ty.zigTypeTag(mod)) {
@@ -1032,14 +1030,14 @@ fn typeToValtype(ty: Type, mod: *Module) wasm.Valtype {
}
/// Using a given `Type`, returns the byte representation of its wasm value type
fn genValtype(ty: Type, mod: *Module) u8 {
fn genValtype(ty: Type, mod: *Zcu) u8 {
return wasm.valtype(typeToValtype(ty, mod));
}
/// Using a given `Type`, returns the corresponding wasm value type
/// Differently from `genValtype` this also allows `void` to create a block
/// with no return type
fn genBlockType(ty: Type, mod: *Module) u8 {
fn genBlockType(ty: Type, mod: *Zcu) u8 {
return switch (ty.ip_index) {
.void_type, .noreturn_type => wasm.block_empty,
else => genValtype(ty, mod),
@@ -1149,7 +1147,7 @@ fn genFunctype(
cc: std.builtin.CallingConvention,
params: []const InternPool.Index,
return_type: Type,
mod: *Module,
mod: *Zcu,
) !wasm.Type {
var temp_params = std.ArrayList(wasm.Valtype).init(gpa);
defer temp_params.deinit();
@@ -1204,7 +1202,7 @@ fn genFunctype(
pub fn generate(
bin_file: *link.File,
src_loc: Module.SrcLoc,
src_loc: Zcu.SrcLoc,
func_index: InternPool.Index,
air: Air,
liveness: Liveness,
@@ -1405,7 +1403,7 @@ fn resolveCallingConventionValues(func: *CodeGen, fn_ty: Type) InnerError!CallWV
return result;
}
fn firstParamSRet(cc: std.builtin.CallingConvention, return_type: Type, mod: *Module) bool {
fn firstParamSRet(cc: std.builtin.CallingConvention, return_type: Type, mod: *Zcu) bool {
switch (cc) {
.Unspecified, .Inline => return isByRef(return_type, mod),
.C => {
@@ -1713,7 +1711,7 @@ fn arch(func: *const CodeGen) std.Target.Cpu.Arch {
/// For a given `Type`, will return true when the type will be passed
/// by reference, rather than by value
fn isByRef(ty: Type, mod: *Module) bool {
fn isByRef(ty: Type, mod: *Zcu) bool {
const ip = &mod.intern_pool;
const target = mod.getTarget();
switch (ty.zigTypeTag(mod)) {
@@ -1785,7 +1783,7 @@ const SimdStoreStrategy = enum {
/// This means when a given type is 128 bits and either the simd128 or relaxed-simd
/// features are enabled, the function will return `.direct`. This would allow to store
/// it using a instruction, rather than an unrolled version.
fn determineSimdStoreStrategy(ty: Type, mod: *Module) SimdStoreStrategy {
fn determineSimdStoreStrategy(ty: Type, mod: *Zcu) SimdStoreStrategy {
std.debug.assert(ty.zigTypeTag(mod) == .Vector);
if (ty.bitSize(mod) != 128) return .unrolled;
const hasFeature = std.Target.wasm.featureSetHas;
@@ -2325,14 +2323,19 @@ fn airStore(func: *CodeGen, inst: Air.Inst.Index, safety: bool) InnerError!void
WValue{ .imm32 = @as(u32, @truncate(mask)) }
else
WValue{ .imm64 = mask };
const wrap_mask_val = if (ptr_info.packed_offset.host_size <= 4)
WValue{ .imm32 = @truncate(~@as(u64, 0) >> @intCast(64 - ty.bitSize(mod))) }
else
WValue{ .imm64 = ~@as(u64, 0) >> @intCast(64 - ty.bitSize(mod)) };
try func.emitWValue(lhs);
const loaded = try func.load(lhs, int_elem_ty, 0);
const anded = try func.binOp(loaded, mask_val, int_elem_ty, .@"and");
const extended_value = try func.intcast(rhs, ty, int_elem_ty);
const masked_value = try func.binOp(extended_value, wrap_mask_val, int_elem_ty, .@"and");
const shifted_value = if (ptr_info.packed_offset.bit_offset > 0) shifted: {
break :shifted try func.binOp(extended_value, shift_val, int_elem_ty, .shl);
} else extended_value;
break :shifted try func.binOp(masked_value, shift_val, int_elem_ty, .shl);
} else masked_value;
const result = try func.binOp(anded, shifted_value, int_elem_ty, .@"or");
// lhs is still on the stack
try func.store(.stack, result, int_elem_ty, lhs.offset());
@@ -2515,7 +2518,7 @@ fn load(func: *CodeGen, operand: WValue, ty: Type, offset: u32) InnerError!WValu
.valtype1 = typeToValtype(ty, mod),
.width = abi_size * 8,
.op = .load,
.signedness = .unsigned,
.signedness = if (ty.isSignedInt(mod)) .signed else .unsigned,
});
try func.addMemArg(
@@ -2800,10 +2803,7 @@ fn airAbs(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
switch (wasm_bits) {
32 => {
try func.emitWValue(operand);
if (wasm_bits != int_bits) {
try func.addImm32(wasm_bits - int_bits);
try func.addTag(.i32_shl);
}
try func.addImm32(31);
try func.addTag(.i32_shr_s);
@@ -2815,15 +2815,10 @@ fn airAbs(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
try func.addTag(.i32_xor);
try func.emitWValue(tmp);
try func.addTag(.i32_sub);
_ = try func.wrapOperand(.stack, ty);
},
64 => {
try func.emitWValue(operand);
if (wasm_bits != int_bits) {
try func.addImm64(wasm_bits - int_bits);
try func.addTag(.i64_shl);
}
try func.addImm64(63);
try func.addTag(.i64_shr_s);
@@ -2835,8 +2830,6 @@ fn airAbs(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
try func.addTag(.i64_xor);
try func.emitWValue(tmp);
try func.addTag(.i64_sub);
_ = try func.wrapOperand(.stack, ty);
},
128 => {
const mask = try func.allocStack(Type.u128);
@@ -2844,10 +2837,6 @@ fn airAbs(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
try func.emitWValue(mask);
_ = try func.load(operand, Type.u64, 8);
if (int_bits != 128) {
try func.addImm64(128 - int_bits);
try func.addTag(.i64_shl);
}
try func.addImm64(63);
try func.addTag(.i64_shr_s);
@@ -2860,9 +2849,8 @@ fn airAbs(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const a = try func.binOpBigInt(operand, mask, Type.u128, .xor);
const b = try func.binOpBigInt(a, mask, Type.u128, .sub);
const result = try func.wrapOperand(b, ty);
func.finishAir(inst, result, &.{ty_op.operand});
func.finishAir(inst, b, &.{ty_op.operand});
return;
},
else => unreachable,
@@ -3058,14 +3046,28 @@ fn wrapOperand(func: *CodeGen, operand: WValue, ty: Type) InnerError!WValue {
switch (wasm_bits) {
32 => {
try func.emitWValue(operand);
try func.addImm32((@as(u32, 1) << @intCast(int_bits)) - 1);
try func.addTag(.i32_and);
if (ty.isSignedInt(mod)) {
try func.addImm32(32 - int_bits);
try func.addTag(.i32_shl);
try func.addImm32(32 - int_bits);
try func.addTag(.i32_shr_s);
} else {
try func.addImm32(~@as(u32, 0) >> @intCast(32 - int_bits));
try func.addTag(.i32_and);
}
return .stack;
},
64 => {
try func.emitWValue(operand);
try func.addImm64((@as(u64, 1) << @intCast(int_bits)) - 1);
try func.addTag(.i64_and);
if (ty.isSignedInt(mod)) {
try func.addImm64(64 - int_bits);
try func.addTag(.i64_shl);
try func.addImm64(64 - int_bits);
try func.addTag(.i64_shr_s);
} else {
try func.addImm64(~@as(u64, 0) >> @intCast(64 - int_bits));
try func.addTag(.i64_and);
}
return .stack;
},
128 => {
@@ -3078,8 +3080,15 @@ fn wrapOperand(func: *CodeGen, operand: WValue, ty: Type) InnerError!WValue {
try func.emitWValue(result);
_ = try func.load(operand, Type.u64, 8);
try func.addImm64((@as(u64, 1) << @intCast(int_bits - 64)) - 1);
try func.addTag(.i64_and);
if (ty.isSignedInt(mod)) {
try func.addImm64(128 - int_bits);
try func.addTag(.i64_shl);
try func.addImm64(128 - int_bits);
try func.addTag(.i64_shr_s);
} else {
try func.addImm64(~@as(u64, 0) >> @intCast(128 - int_bits));
try func.addTag(.i64_and);
}
try func.store(.stack, .stack, Type.u64, result.offset() + 8);
return result;
@@ -3201,22 +3210,6 @@ fn lowerDeclRefValue(func: *CodeGen, decl_index: InternPool.DeclIndex, offset: u
} else return WValue{ .memory_offset = .{ .pointer = target_sym_index, .offset = offset } };
}
/// Converts a signed integer to its 2's complement form and returns
/// an unsigned integer instead.
/// Asserts bitsize <= 64
fn toTwosComplement(value: anytype, bits: u7) std.meta.Int(.unsigned, @typeInfo(@TypeOf(value)).Int.bits) {
const T = @TypeOf(value);
comptime assert(@typeInfo(T) == .Int);
comptime assert(@typeInfo(T).Int.signedness == .signed);
assert(bits <= 64);
const WantedT = std.meta.Int(.unsigned, @typeInfo(T).Int.bits);
if (value >= 0) return @as(WantedT, @bitCast(value));
const max_value = @as(u64, @intCast((@as(u65, 1) << bits) - 1));
const flipped = @as(T, @intCast((~-@as(i65, value)) + 1));
const result = @as(WantedT, @bitCast(flipped)) & max_value;
return @as(WantedT, @intCast(result));
}
/// Asserts that `isByRef` returns `false` for `ty`.
fn lowerConstant(func: *CodeGen, val: Value, ty: Type) InnerError!WValue {
const mod = func.bin_file.base.comp.module.?;
@@ -3268,18 +3261,12 @@ fn lowerConstant(func: *CodeGen, val: Value, ty: Type) InnerError!WValue {
const int_info = ty.intInfo(mod);
switch (int_info.signedness) {
.signed => switch (int_info.bits) {
0...32 => return WValue{ .imm32 = @as(u32, @intCast(toTwosComplement(
val.toSignedInt(mod),
@as(u6, @intCast(int_info.bits)),
))) },
33...64 => return WValue{ .imm64 = toTwosComplement(
val.toSignedInt(mod),
@as(u7, @intCast(int_info.bits)),
) },
0...32 => return WValue{ .imm32 = @bitCast(@as(i32, @intCast(val.toSignedInt(mod)))) },
33...64 => return WValue{ .imm64 = @bitCast(val.toSignedInt(mod)) },
else => unreachable,
},
.unsigned => switch (int_info.bits) {
0...32 => return WValue{ .imm32 = @as(u32, @intCast(val.toUnsignedInt(mod))) },
0...32 => return WValue{ .imm32 = @intCast(val.toUnsignedInt(mod)) },
33...64 => return WValue{ .imm64 = val.toUnsignedInt(mod) },
else => unreachable,
},
@@ -3447,7 +3434,7 @@ fn valueAsI32(func: *const CodeGen, val: Value, ty: Type) i32 {
assert(ptr.base_addr == .int);
return @intCast(ptr.byte_offset);
},
.err => |err| @as(i32, @bitCast(@as(Module.ErrorInt, @intCast(mod.global_error_set.getIndex(err.name).?)))),
.err => |err| @as(i32, @bitCast(@as(Zcu.ErrorInt, @intCast(mod.global_error_set.getIndex(err.name).?)))),
else => unreachable,
},
}
@@ -3458,11 +3445,11 @@ fn valueAsI32(func: *const CodeGen, val: Value, ty: Type) i32 {
};
}
fn intIndexAsI32(ip: *const InternPool, int: InternPool.Index, mod: *Module) i32 {
fn intIndexAsI32(ip: *const InternPool, int: InternPool.Index, mod: *Zcu) i32 {
return intStorageAsI32(ip.indexToKey(int).int.storage, mod);
}
fn intStorageAsI32(storage: InternPool.Key.Int.Storage, mod: *Module) i32 {
fn intStorageAsI32(storage: InternPool.Key.Int.Storage, mod: *Zcu) i32 {
return switch (storage) {
.i64 => |x| @as(i32, @intCast(x)),
.u64 => |x| @as(i32, @bitCast(@as(u32, @intCast(x)))),
@@ -3618,29 +3605,11 @@ fn cmp(func: *CodeGen, lhs: WValue, rhs: WValue, ty: Type, op: std.math.CompareO
// incase of an actual integer, we emit the correct signedness
break :blk ty.intInfo(mod).signedness;
};
const extend_sign = blk: {
// do we need to extend the sign bit?
if (signedness != .signed) break :blk false;
if (op == .eq or op == .neq) break :blk false;
const int_bits = ty.intInfo(mod).bits;
const wasm_bits = toWasmBits(int_bits) orelse unreachable;
break :blk (wasm_bits != int_bits);
};
const lhs_wasm = if (extend_sign)
try func.signExtendInt(lhs, ty)
else
lhs;
const rhs_wasm = if (extend_sign)
try func.signExtendInt(rhs, ty)
else
rhs;
// ensure that when we compare pointers, we emit
// the true pointer of a stack value, rather than the stack pointer.
try func.lowerToStack(lhs_wasm);
try func.lowerToStack(rhs_wasm);
try func.lowerToStack(lhs);
try func.lowerToStack(rhs);
const opcode: wasm.Opcode = buildOpcode(.{
.valtype1 = typeToValtype(ty, mod),
@@ -3760,32 +3729,49 @@ fn airNot(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
try func.addLabel(.local_set, not_tmp.local.value);
break :result not_tmp;
} else {
const operand_bits = operand_ty.intInfo(mod).bits;
const wasm_bits = toWasmBits(operand_bits) orelse {
return func.fail("TODO: Implement binary NOT for integer with bitsize '{d}'", .{operand_bits});
const int_info = operand_ty.intInfo(mod);
const wasm_bits = toWasmBits(int_info.bits) orelse {
return func.fail("TODO: Implement binary NOT for {}", .{operand_ty.fmt(mod)});
};
switch (wasm_bits) {
32 => {
const bin_op = try func.binOp(operand, .{ .imm32 = ~@as(u32, 0) }, operand_ty, .xor);
break :result try (try func.wrapOperand(bin_op, operand_ty)).toLocal(func, operand_ty);
try func.emitWValue(operand);
try func.addImm32(switch (int_info.signedness) {
.unsigned => ~@as(u32, 0) >> @intCast(32 - int_info.bits),
.signed => ~@as(u32, 0),
});
try func.addTag(.i32_xor);
break :result try @as(WValue, .stack).toLocal(func, operand_ty);
},
64 => {
const bin_op = try func.binOp(operand, .{ .imm64 = ~@as(u64, 0) }, operand_ty, .xor);
break :result try (try func.wrapOperand(bin_op, operand_ty)).toLocal(func, operand_ty);
try func.emitWValue(operand);
try func.addImm64(switch (int_info.signedness) {
.unsigned => ~@as(u64, 0) >> @intCast(64 - int_info.bits),
.signed => ~@as(u64, 0),
});
try func.addTag(.i64_xor);
break :result try @as(WValue, .stack).toLocal(func, operand_ty);
},
128 => {
const result_ptr = try func.allocStack(operand_ty);
try func.emitWValue(result_ptr);
const msb = try func.load(operand, Type.u64, 0);
const msb_xor = try func.binOp(msb, .{ .imm64 = ~@as(u64, 0) }, Type.u64, .xor);
try func.store(.{ .stack = {} }, msb_xor, Type.u64, 0 + result_ptr.offset());
const ptr = try func.allocStack(operand_ty);
try func.emitWValue(result_ptr);
const lsb = try func.load(operand, Type.u64, 8);
const lsb_xor = try func.binOp(lsb, .{ .imm64 = ~@as(u64, 0) }, Type.u64, .xor);
try func.store(result_ptr, lsb_xor, Type.u64, 8 + result_ptr.offset());
break :result result_ptr;
try func.emitWValue(ptr);
_ = try func.load(operand, Type.u64, 0);
try func.addImm64(~@as(u64, 0));
try func.addTag(.i64_xor);
try func.store(.stack, .stack, Type.u64, ptr.offset());
try func.emitWValue(ptr);
_ = try func.load(operand, Type.u64, 8);
try func.addImm64(switch (int_info.signedness) {
.unsigned => ~@as(u64, 0) >> @intCast(128 - int_info.bits),
.signed => ~@as(u64, 0),
});
try func.addTag(.i64_xor);
try func.store(.stack, .stack, Type.u64, ptr.offset() + 8);
break :result ptr;
},
else => unreachable,
}
@@ -3812,25 +3798,44 @@ fn airUnreachable(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
}
fn airBitcast(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const mod = func.bin_file.base.comp.module.?;
const ty_op = func.air.instructions.items(.data)[@intFromEnum(inst)].ty_op;
const operand = try func.resolveInst(ty_op.operand);
const wanted_ty = func.typeOfIndex(inst);
const given_ty = func.typeOf(ty_op.operand);
const bit_size = given_ty.bitSize(mod);
const needs_wrapping = (given_ty.isSignedInt(mod) != wanted_ty.isSignedInt(mod)) and
bit_size != 32 and bit_size != 64 and bit_size != 128;
const result = result: {
const operand = try func.resolveInst(ty_op.operand);
const wanted_ty = func.typeOfIndex(inst);
const given_ty = func.typeOf(ty_op.operand);
if (given_ty.isAnyFloat() or wanted_ty.isAnyFloat()) {
const bitcast_result = try func.bitcast(wanted_ty, given_ty, operand);
break :result try bitcast_result.toLocal(func, wanted_ty);
}
const mod = func.bin_file.base.comp.module.?;
if (isByRef(given_ty, mod) and !isByRef(wanted_ty, mod)) {
const loaded_memory = try func.load(operand, wanted_ty, 0);
break :result try loaded_memory.toLocal(func, wanted_ty);
if (needs_wrapping) {
break :result try (try func.wrapOperand(loaded_memory, wanted_ty)).toLocal(func, wanted_ty);
} else {
break :result try loaded_memory.toLocal(func, wanted_ty);
}
}
if (!isByRef(given_ty, mod) and isByRef(wanted_ty, mod)) {
const stack_memory = try func.allocStack(wanted_ty);
try func.store(stack_memory, operand, given_ty, 0);
break :result stack_memory;
if (needs_wrapping) {
break :result try (try func.wrapOperand(stack_memory, wanted_ty)).toLocal(func, wanted_ty);
} else {
break :result stack_memory;
}
}
if (needs_wrapping) {
break :result try (try func.wrapOperand(operand, wanted_ty)).toLocal(func, wanted_ty);
}
break :result func.reuseOperand(ty_op.operand, operand);
};
func.finishAir(inst, result, &.{ty_op.operand});
@@ -4355,7 +4360,7 @@ fn airIntcast(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const op_bits = toWasmBits(@as(u16, @intCast(operand_ty.bitSize(mod)))).?;
const wanted_bits = toWasmBits(@as(u16, @intCast(ty.bitSize(mod)))).?;
const result = if (op_bits == wanted_bits and !ty.isSignedInt(mod))
const result = if (op_bits == wanted_bits)
func.reuseOperand(ty_op.operand, operand)
else
try (try func.intcast(operand, operand_ty, ty)).toLocal(func, ty);
@@ -4377,37 +4382,17 @@ fn intcast(func: *CodeGen, operand: WValue, given: Type, wanted: Type) InnerErro
const op_bits = toWasmBits(given_bitsize).?;
const wanted_bits = toWasmBits(wanted_bitsize).?;
if (op_bits == wanted_bits) {
if (given.isSignedInt(mod)) {
if (given_bitsize < wanted_bitsize) {
// signed integers are stored as two's complement,
// when we upcast from a smaller integer to larger
// integers, we must get its absolute value similar to
// i64_extend_i32_s instruction.
return func.signExtendInt(operand, given);
}
return func.wrapOperand(operand, wanted);
}
return operand;
}
if (op_bits > 32 and op_bits <= 64 and wanted_bits == 32) {
if (op_bits == 64 and wanted_bits == 32) {
try func.emitWValue(operand);
try func.addTag(.i32_wrap_i64);
if (given.isSignedInt(mod) and wanted_bitsize < 32)
return func.wrapOperand(.{ .stack = {} }, wanted)
else
return WValue{ .stack = {} };
} else if (op_bits == 32 and wanted_bits > 32 and wanted_bits <= 64) {
const operand32 = if (given_bitsize < 32 and wanted.isSignedInt(mod))
try func.signExtendInt(operand, given)
else
operand;
try func.emitWValue(operand32);
return .stack;
} else if (op_bits == 32 and wanted_bits == 64) {
try func.emitWValue(operand);
try func.addTag(if (wanted.isSignedInt(mod)) .i64_extend_i32_s else .i64_extend_i32_u);
if (given.isSignedInt(mod) and wanted_bitsize < 64)
return func.wrapOperand(.{ .stack = {} }, wanted)
else
return WValue{ .stack = {} };
return .stack;
} else if (wanted_bits == 128) {
// for 128bit integers we store the integer in the virtual stack, rather than a local
const stack_ptr = try func.allocStack(wanted);
@@ -4416,17 +4401,18 @@ fn intcast(func: *CodeGen, operand: WValue, given: Type, wanted: Type) InnerErro
// for 32 bit integers, we first coerce the value into a 64 bit integer before storing it
// meaning less store operations are required.
const lhs = if (op_bits == 32) blk: {
break :blk try func.intcast(operand, given, if (wanted.isSignedInt(mod)) Type.i64 else Type.u64);
const sign_ty = if (wanted.isSignedInt(mod)) Type.i64 else Type.u64;
break :blk try (try func.intcast(operand, given, sign_ty)).toLocal(func, sign_ty);
} else operand;
// store msb first
try func.store(.{ .stack = {} }, lhs, Type.u64, 0 + stack_ptr.offset());
try func.store(.stack, lhs, Type.u64, 0 + stack_ptr.offset());
// For signed integers we shift msb by 63 (64bit integer - 1 sign bit) and store remaining value
if (wanted.isSignedInt(mod)) {
try func.emitWValue(stack_ptr);
const shr = try func.binOp(lhs, .{ .imm64 = 63 }, Type.i64, .shr);
try func.store(.{ .stack = {} }, shr, Type.u64, 8 + stack_ptr.offset());
try func.store(.stack, shr, Type.u64, 8 + stack_ptr.offset());
} else {
// Ensure memory of lsb is zero'd
try func.store(stack_ptr, .{ .imm64 = 0 }, Type.u64, 8);
@@ -5823,25 +5809,34 @@ fn airPopcount(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
};
switch (wasm_bits) {
32 => {
try func.emitWValue(operand);
if (op_ty.isSignedInt(mod) and bits != wasm_bits) {
_ = try func.wrapOperand(.stack, try mod.intType(.unsigned, bits));
}
try func.addTag(.i32_popcnt);
},
64 => {
try func.emitWValue(operand);
if (op_ty.isSignedInt(mod) and bits != wasm_bits) {
_ = try func.wrapOperand(.stack, try mod.intType(.unsigned, bits));
}
try func.addTag(.i64_popcnt);
try func.addTag(.i32_wrap_i64);
try func.emitWValue(operand);
},
128 => {
_ = try func.load(operand, Type.u64, 0);
try func.addTag(.i64_popcnt);
_ = try func.load(operand, Type.u64, 8);
if (op_ty.isSignedInt(mod) and bits != wasm_bits) {
_ = try func.wrapOperand(.stack, try mod.intType(.unsigned, bits - 64));
}
try func.addTag(.i64_popcnt);
try func.addTag(.i64_add);
try func.addTag(.i32_wrap_i64);
},
else => {
try func.emitWValue(operand);
switch (wasm_bits) {
32 => try func.addTag(.i32_popcnt),
64 => {
try func.addTag(.i64_popcnt);
try func.addTag(.i32_wrap_i64);
},
else => unreachable,
}
},
else => unreachable,
}
const result = try func.allocLocal(result_ty);
@@ -5877,7 +5872,7 @@ fn airBitReverse(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const reversed = if (bits == 32)
intrin_ret
else
try func.binOp(intrin_ret, .{ .imm32 = 32 - bits }, Type.u32, .shr);
try func.binOp(intrin_ret, .{ .imm32 = 32 - bits }, ty, .shr);
const result = try reversed.toLocal(func, ty);
func.finishAir(inst, result, &.{ty_op.operand});
},
@@ -5891,7 +5886,7 @@ fn airBitReverse(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const reversed = if (bits == 64)
intrin_ret
else
try func.binOp(intrin_ret, .{ .imm64 = 64 - bits }, Type.u64, .shr);
try func.binOp(intrin_ret, .{ .imm64 = 64 - bits }, ty, .shr);
const result = try reversed.toLocal(func, ty);
func.finishAir(inst, result, &.{ty_op.operand});
},
@@ -5928,7 +5923,11 @@ fn airBitReverse(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
defer tmp.free(func);
try func.addLabel(.local_tee, tmp.local.value);
try func.emitWValue(.{ .imm64 = 128 - bits });
try func.addTag(.i64_shr_u);
if (ty.isSignedInt(mod)) {
try func.addTag(.i64_shr_s);
} else {
try func.addTag(.i64_shr_u);
}
try func.store(.stack, .stack, Type.u64, result.offset() + 8);
try func.addLabel(.local_get, tmp.local.value);
try func.emitWValue(.{ .imm64 = bits - 64 });
@@ -5996,8 +5995,8 @@ fn airAddSubWithOverflow(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerErro
const ty_pl = func.air.instructions.items(.data)[@intFromEnum(inst)].ty_pl;
const extra = func.air.extraData(Air.Bin, ty_pl.payload).data;
const lhs_op = try func.resolveInst(extra.lhs);
const rhs_op = try func.resolveInst(extra.rhs);
const lhs = try func.resolveInst(extra.lhs);
const rhs = try func.resolveInst(extra.rhs);
const lhs_ty = func.typeOf(extra.lhs);
const mod = func.bin_file.base.comp.module.?;
@@ -6012,7 +6011,7 @@ fn airAddSubWithOverflow(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerErro
};
if (wasm_bits == 128) {
const result = try func.addSubWithOverflowBigInt(lhs_op, rhs_op, lhs_ty, func.typeOfIndex(inst), op);
const result = try func.addSubWithOverflowBigInt(lhs, rhs, lhs_ty, func.typeOfIndex(inst), op);
return func.finishAir(inst, result, &.{ extra.lhs, extra.rhs });
}
@@ -6022,24 +6021,6 @@ fn airAddSubWithOverflow(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerErro
else => unreachable,
};
// for signed integers, we first apply signed shifts by the difference in bits
// to get the signed value, as we store it internally as 2's complement.
var lhs = if (wasm_bits != int_info.bits and is_signed) blk: {
break :blk try (try func.signExtendInt(lhs_op, lhs_ty)).toLocal(func, lhs_ty);
} else lhs_op;
var rhs = if (wasm_bits != int_info.bits and is_signed) blk: {
break :blk try (try func.signExtendInt(rhs_op, lhs_ty)).toLocal(func, lhs_ty);
} else rhs_op;
// in this case, we performed a signExtendInt which created a temporary local
// so let's free this so it can be re-used instead.
// In the other case we do not want to free it, because that would free the
// resolved instructions which may be referenced by other instructions.
defer if (wasm_bits != int_info.bits and is_signed) {
lhs.free(func);
rhs.free(func);
};
const bin_op = try (try func.binOp(lhs, rhs, lhs_ty, op)).toLocal(func, lhs_ty);
var result = if (wasm_bits != int_info.bits) blk: {
break :blk try (try func.wrapOperand(bin_op, lhs_ty)).toLocal(func, lhs_ty);
@@ -6053,8 +6034,7 @@ fn airAddSubWithOverflow(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerErro
const lt = try func.cmp(bin_op, lhs, lhs_ty, .lt);
break :blk try func.binOp(cmp_zero, lt, Type.u32, .xor);
}
const abs = try func.signExtendInt(bin_op, lhs_ty);
break :blk try func.cmp(abs, bin_op, lhs_ty, .neq);
break :blk try func.cmp(bin_op, bin_op, lhs_ty, .neq);
} else if (wasm_bits == int_info.bits)
try func.cmp(bin_op, lhs, lhs_ty, cmp_op)
else
@@ -6150,7 +6130,6 @@ fn airShlWithOverflow(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
}
const int_info = lhs_ty.intInfo(mod);
const is_signed = int_info.signedness == .signed;
const wasm_bits = toWasmBits(int_info.bits) orelse {
return func.fail("TODO: Implement shl_with_overflow for integer bitsize: {d}", .{int_info.bits});
};
@@ -6170,13 +6149,7 @@ fn airShlWithOverflow(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
} else shl;
defer result.free(func); // it's a no-op to free the same local twice (when wasm_bits == int_info.bits)
const overflow_bit = if (wasm_bits != int_info.bits and is_signed) blk: {
// emit lhs to stack to we can keep 'wrapped' on the stack also
try func.emitWValue(lhs);
const abs = try func.signExtendInt(shl, lhs_ty);
const wrapped = try func.wrapBinOp(abs, rhs_final, lhs_ty, .shr);
break :blk try func.cmp(.{ .stack = {} }, wrapped, lhs_ty, .neq);
} else blk: {
const overflow_bit = blk: {
try func.emitWValue(lhs);
const shr = try func.binOp(result, rhs_final, lhs_ty, .shr);
break :blk try func.cmp(.{ .stack = {} }, shr, lhs_ty, .neq);
@@ -6245,10 +6218,8 @@ fn airMulWithOverflow(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
break :blk down_cast;
}
} else if (int_info.signedness == .signed and wasm_bits == 32) blk: {
const lhs_abs = try func.signExtendInt(lhs, lhs_ty);
const rhs_abs = try func.signExtendInt(rhs, lhs_ty);
const bin_op = try (try func.binOp(lhs_abs, rhs_abs, lhs_ty, .mul)).toLocal(func, lhs_ty);
const mul_abs = try func.signExtendInt(bin_op, lhs_ty);
const bin_op = try (try func.binOp(lhs, rhs, lhs_ty, .mul)).toLocal(func, lhs_ty);
const mul_abs = try func.wrapOperand(bin_op, lhs_ty);
_ = try func.cmp(mul_abs, bin_op, lhs_ty, .neq);
try func.addLabel(.local_set, overflow_bit.local.value);
break :blk try func.wrapOperand(bin_op, lhs_ty);
@@ -6697,6 +6668,9 @@ fn airByteSwap(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
return func.fail("TODO: @byteSwap for vectors", .{});
}
const int_info = ty.intInfo(mod);
const wasm_bits = toWasmBits(int_info.bits) orelse {
return func.fail("TODO: @byteSwap for integers with bitsize {d}", .{int_info.bits});
};
// bytes are no-op
if (int_info.bits == 8) {
@@ -6704,73 +6678,34 @@ fn airByteSwap(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
}
const result = result: {
switch (int_info.bits) {
16 => {
const shl_res = try func.binOp(operand, .{ .imm32 = 8 }, ty, .shl);
const lhs = try func.binOp(shl_res, .{ .imm32 = 0xFF00 }, ty, .@"and");
const shr_res = try func.binOp(operand, .{ .imm32 = 8 }, ty, .shr);
const res = if (int_info.signedness == .signed) blk: {
break :blk try func.wrapOperand(shr_res, Type.u8);
} else shr_res;
break :result try (try func.binOp(lhs, res, ty, .@"or")).toLocal(func, ty);
},
24 => {
var msb = try (try func.wrapOperand(operand, Type.u16)).toLocal(func, Type.u16);
defer msb.free(func);
const shl_res = try func.binOp(msb, .{ .imm32 = 8 }, Type.u16, .shl);
const lhs = try func.binOp(shl_res, .{ .imm32 = 0xFF0000 }, Type.u16, .@"and");
const shr_res = try func.binOp(msb, .{ .imm32 = 8 }, ty, .shr);
const res = if (int_info.signedness == .signed) blk: {
break :blk try func.wrapOperand(shr_res, Type.u8);
} else shr_res;
const lhs_tmp = try func.binOp(lhs, res, ty, .@"or");
const lhs_result = try func.binOp(lhs_tmp, .{ .imm32 = 8 }, ty, .shr);
const rhs_wrap = try func.wrapOperand(msb, Type.u8);
const rhs_result = try func.binOp(rhs_wrap, .{ .imm32 = 16 }, ty, .shl);
const lsb = try func.wrapBinOp(operand, .{ .imm32 = 16 }, Type.u8, .shr);
const tmp = try func.binOp(lhs_result, rhs_result, ty, .@"or");
break :result try (try func.binOp(tmp, lsb, ty, .@"or")).toLocal(func, ty);
},
switch (wasm_bits) {
32 => {
const shl_tmp = try func.binOp(operand, .{ .imm32 = 8 }, Type.u32, .shl);
const lhs = try func.binOp(shl_tmp, .{ .imm32 = 0xFF00FF00 }, Type.u32, .@"and");
const shr_tmp = try func.binOp(operand, .{ .imm32 = 8 }, Type.u32, .shr);
const rhs = try func.binOp(shr_tmp, .{ .imm32 = 0x00FF00FF }, Type.u32, .@"and");
var tmp_or = try (try func.binOp(lhs, rhs, Type.u32, .@"or")).toLocal(func, Type.u32);
const intrin_ret = try func.callIntrinsic(
"__bswapsi2",
&.{.u32_type},
Type.u32,
&.{operand},
);
const swapped = if (int_info.bits == 32)
intrin_ret
else
try func.binOp(intrin_ret, .{ .imm32 = 32 - int_info.bits }, ty, .shr);
const shl = try func.binOp(tmp_or, .{ .imm32 = 16 }, Type.u32, .shl);
const shr = try func.binOp(tmp_or, .{ .imm32 = 16 }, Type.u32, .shr);
tmp_or.free(func);
break :result try (try func.binOp(shl, shr, Type.u32, .@"or")).toLocal(func, Type.u32);
break :result try swapped.toLocal(func, ty);
},
64 => {
const shl_tmp_1 = try func.binOp(operand, .{ .imm64 = 8 }, Type.u64, .shl);
const lhs_1 = try func.binOp(shl_tmp_1, .{ .imm64 = 0xFF00FF00FF00FF00 }, Type.u64, .@"and");
const intrin_ret = try func.callIntrinsic(
"__bswapdi2",
&.{.u64_type},
Type.u64,
&.{operand},
);
const swapped = if (int_info.bits == 64)
intrin_ret
else
try func.binOp(intrin_ret, .{ .imm64 = 64 - int_info.bits }, ty, .shr);
const shr_tmp_1 = try func.binOp(operand, .{ .imm64 = 8 }, Type.u64, .shr);
const rhs_1 = try func.binOp(shr_tmp_1, .{ .imm64 = 0x00FF00FF00FF00FF }, Type.u64, .@"and");
var tmp_or_1 = try (try func.binOp(lhs_1, rhs_1, Type.u64, .@"or")).toLocal(func, Type.u64);
const shl_tmp_2 = try func.binOp(tmp_or_1, .{ .imm64 = 16 }, Type.u64, .shl);
const lhs_2 = try func.binOp(shl_tmp_2, .{ .imm64 = 0xFFFF0000FFFF0000 }, Type.u64, .@"and");
const shr_tmp_2 = try func.binOp(tmp_or_1, .{ .imm64 = 16 }, Type.u64, .shr);
tmp_or_1.free(func);
const rhs_2 = try func.binOp(shr_tmp_2, .{ .imm64 = 0x0000FFFF0000FFFF }, Type.u64, .@"and");
var tmp_or_2 = try (try func.binOp(lhs_2, rhs_2, Type.u64, .@"or")).toLocal(func, Type.u64);
const shl = try func.binOp(tmp_or_2, .{ .imm64 = 32 }, Type.u64, .shl);
const shr = try func.binOp(tmp_or_2, .{ .imm64 = 32 }, Type.u64, .shr);
tmp_or_2.free(func);
break :result try (try func.binOp(shl, shr, Type.u64, .@"or")).toLocal(func, Type.u64);
break :result try swapped.toLocal(func, ty);
},
else => return func.fail("TODO: @byteSwap for integers with bitsize {d}", .{int_info.bits}),
}
@@ -6779,32 +6714,24 @@ fn airByteSwap(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
}
fn airDiv(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const mod = func.bin_file.base.comp.module.?;
const bin_op = func.air.instructions.items(.data)[@intFromEnum(inst)].bin_op;
const ty = func.typeOfIndex(inst);
const lhs = try func.resolveInst(bin_op.lhs);
const rhs = try func.resolveInst(bin_op.rhs);
const result = if (ty.isSignedInt(mod))
try func.divSigned(lhs, rhs, ty)
else
try (try func.binOp(lhs, rhs, ty, .div)).toLocal(func, ty);
const result = try (try func.binOp(lhs, rhs, ty, .div)).toLocal(func, ty);
func.finishAir(inst, result, &.{ bin_op.lhs, bin_op.rhs });
}
fn airDivTrunc(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const mod = func.bin_file.base.comp.module.?;
const bin_op = func.air.instructions.items(.data)[@intFromEnum(inst)].bin_op;
const ty = func.typeOfIndex(inst);
const lhs = try func.resolveInst(bin_op.lhs);
const rhs = try func.resolveInst(bin_op.rhs);
const div_result = if (ty.isSignedInt(mod))
try func.divSigned(lhs, rhs, ty)
else
try (try func.binOp(lhs, rhs, ty, .div)).toLocal(func, ty);
const div_result = try (try func.binOp(lhs, rhs, ty, .div)).toLocal(func, ty);
if (ty.isAnyFloat()) {
const trunc_result = try (try func.floatOp(.trunc, ty, &.{div_result})).toLocal(func, ty);
@@ -6834,16 +6761,6 @@ fn airDivFloor(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
return func.fail("TODO: `@divFloor` for signed integers larger than 64 bits ({d} bits requested)", .{int_bits});
}
const lhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(lhs, ty)).toLocal(func, ty)
else
lhs;
const rhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(rhs, ty)).toLocal(func, ty)
else
rhs;
const zero = switch (wasm_bits) {
32 => WValue{ .imm32 = 0 },
64 => WValue{ .imm64 = 0 },
@@ -6852,7 +6769,7 @@ fn airDivFloor(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
// tee leaves the value on the stack and stores it in a local.
const quotient = try func.allocLocal(ty);
_ = try func.binOp(lhs_wasm, rhs_wasm, ty, .div);
_ = try func.binOp(lhs, rhs, ty, .div);
try func.addLabel(.local_tee, quotient.local.value);
// select takes a 32 bit value as the condition, so in the 64 bit case we use eqz to narrow
@@ -6864,7 +6781,7 @@ fn airDivFloor(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
}
// 0 if the signs of rhs_wasm and lhs_wasm are the same, 1 otherwise.
_ = try func.binOp(lhs_wasm, rhs_wasm, ty, .xor);
_ = try func.binOp(lhs, rhs, ty, .xor);
_ = try func.cmp(.stack, zero, ty, .lt);
switch (wasm_bits) {
@@ -6879,7 +6796,7 @@ fn airDivFloor(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
else => unreachable,
}
_ = try func.binOp(lhs_wasm, rhs_wasm, ty, .rem);
_ = try func.binOp(lhs, rhs, ty, .rem);
if (wasm_bits == 64) {
try func.addTag(.i64_eqz);
@@ -6929,68 +6846,14 @@ fn airDivFloor(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
func.finishAir(inst, result, &.{ bin_op.lhs, bin_op.rhs });
}
fn divSigned(func: *CodeGen, lhs: WValue, rhs: WValue, ty: Type) InnerError!WValue {
const mod = func.bin_file.base.comp.module.?;
const int_bits = ty.intInfo(mod).bits;
const wasm_bits = toWasmBits(int_bits) orelse {
return func.fail("TODO: Implement signed division for integers with bitsize '{d}'", .{int_bits});
};
if (wasm_bits == 128) {
return func.fail("TODO: Implement signed division for 128-bit integerrs", .{});
}
if (wasm_bits != int_bits) {
// Leave both values on the stack
_ = try func.signExtendInt(lhs, ty);
_ = try func.signExtendInt(rhs, ty);
} else {
try func.emitWValue(lhs);
try func.emitWValue(rhs);
}
switch (wasm_bits) {
32 => try func.addTag(.i32_div_s),
64 => try func.addTag(.i64_div_s),
else => unreachable,
}
_ = try func.wrapOperand(.stack, ty);
const result = try func.allocLocal(ty);
try func.addLabel(.local_set, result.local.value);
return result;
}
fn airRem(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
const bin_op = func.air.instructions.items(.data)[@intFromEnum(inst)].bin_op;
const mod = func.bin_file.base.comp.module.?;
const ty = func.typeOfIndex(inst);
const lhs = try func.resolveInst(bin_op.lhs);
const rhs = try func.resolveInst(bin_op.rhs);
const result = if (ty.isSignedInt(mod)) result: {
const int_bits = ty.intInfo(mod).bits;
const wasm_bits = toWasmBits(int_bits) orelse {
return func.fail("TODO: `@rem` for signed integers larger than 128 bits ({d} bits requested)", .{int_bits});
};
if (wasm_bits > 64) {
return func.fail("TODO: `@rem` for signed integers larger than 64 bits ({d} bits requested)", .{int_bits});
}
const lhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(lhs, ty)).toLocal(func, ty)
else
lhs;
const rhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(rhs, ty)).toLocal(func, ty)
else
rhs;
_ = try func.binOp(lhs_wasm, rhs_wasm, ty, .rem);
break :result try func.wrapOperand(.stack, ty);
} else try func.binOp(lhs, rhs, ty, .rem);
const result = try func.binOp(lhs, rhs, ty, .rem);
const return_local = try result.toLocal(func, ty);
func.finishAir(inst, return_local, &.{ bin_op.lhs, bin_op.rhs });
@@ -7022,19 +6885,9 @@ fn airMod(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
return func.fail("TODO: `@mod` for signed integers larger than 64 bits ({d} bits requested)", .{int_bits});
}
const lhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(lhs, ty)).toLocal(func, ty)
else
lhs;
const rhs_wasm = if (wasm_bits != int_bits)
try (try func.signExtendInt(rhs, ty)).toLocal(func, ty)
else
rhs;
_ = try func.binOp(lhs_wasm, rhs_wasm, ty, .rem);
_ = try func.binOp(.stack, rhs_wasm, ty, .add);
_ = try func.binOp(.stack, rhs_wasm, ty, .rem);
_ = try func.binOp(lhs, rhs, ty, .rem);
_ = try func.binOp(.stack, rhs, ty, .add);
_ = try func.binOp(.stack, rhs, ty, .rem);
} else {
return func.fail("TODO: implement `@mod` on floating point types for {}", .{func.target.cpu.arch});
}
@@ -7044,42 +6897,6 @@ fn airMod(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
func.finishAir(inst, result, &.{ bin_op.lhs, bin_op.rhs });
}
/// Sign extends an N bit signed integer and pushes the result to the stack.
/// The result will be sign extended to 32 bits if N <= 32 or 64 bits if N <= 64.
/// Support for integers wider than 64 bits has not yet been implemented.
fn signExtendInt(func: *CodeGen, operand: WValue, ty: Type) InnerError!WValue {
const mod = func.bin_file.base.comp.module.?;
const int_bits = ty.intInfo(mod).bits;
const wasm_bits = toWasmBits(int_bits) orelse {
return func.fail("TODO: signExtendInt for signed integers larger than '{d}' bits", .{int_bits});
};
const shift_val = switch (wasm_bits) {
32 => WValue{ .imm32 = wasm_bits - int_bits },
64 => WValue{ .imm64 = wasm_bits - int_bits },
else => return func.fail("TODO: signExtendInt for i128", .{}),
};
try func.emitWValue(operand);
switch (wasm_bits) {
32 => {
try func.emitWValue(shift_val);
try func.addTag(.i32_shl);
try func.emitWValue(shift_val);
try func.addTag(.i32_shr_s);
},
64 => {
try func.emitWValue(shift_val);
try func.addTag(.i64_shl);
try func.emitWValue(shift_val);
try func.addTag(.i64_shr_s);
},
else => unreachable,
}
return WValue{ .stack = {} };
}
fn airSatBinOp(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerError!void {
assert(op == .add or op == .sub);
const bin_op = func.air.instructions.items(.data)[@intFromEnum(inst)].bin_op;
@@ -7131,20 +6948,13 @@ fn airSatBinOp(func: *CodeGen, inst: Air.Inst.Index, op: Op) InnerError!void {
return func.finishAir(inst, result, &.{ bin_op.lhs, bin_op.rhs });
}
fn signedSat(func: *CodeGen, lhs_operand: WValue, rhs_operand: WValue, ty: Type, op: Op) InnerError!WValue {
fn signedSat(func: *CodeGen, lhs: WValue, rhs: WValue, ty: Type, op: Op) InnerError!WValue {
const mod = func.bin_file.base.comp.module.?;
const int_info = ty.intInfo(mod);
const wasm_bits = toWasmBits(int_info.bits).?;
const is_wasm_bits = wasm_bits == int_info.bits;
const ext_ty = if (!is_wasm_bits) try mod.intType(int_info.signedness, wasm_bits) else ty;
var lhs = if (!is_wasm_bits) lhs: {
break :lhs try (try func.signExtendInt(lhs_operand, ty)).toLocal(func, ext_ty);
} else lhs_operand;
var rhs = if (!is_wasm_bits) rhs: {
break :rhs try (try func.signExtendInt(rhs_operand, ty)).toLocal(func, ext_ty);
} else rhs_operand;
const max_val: u64 = @as(u64, @intCast((@as(u65, 1) << @as(u7, @intCast(int_info.bits - 1))) - 1));
const min_val: i64 = (-@as(i64, @intCast(@as(u63, @intCast(max_val))))) - 1;
const max_wvalue = switch (wasm_bits) {
@@ -7161,8 +6971,6 @@ fn signedSat(func: *CodeGen, lhs_operand: WValue, rhs_operand: WValue, ty: Type,
var bin_result = try (try func.binOp(lhs, rhs, ext_ty, op)).toLocal(func, ext_ty);
if (!is_wasm_bits) {
defer bin_result.free(func); // not returned in this branch
defer lhs.free(func); // uses temporary local for absvalue
defer rhs.free(func); // uses temporary local for absvalue
try func.emitWValue(bin_result);
try func.emitWValue(max_wvalue);
_ = try func.cmp(bin_result, max_wvalue, ext_ty, .lt);
@@ -7547,7 +7355,7 @@ fn airErrorSetHasValue(func: *CodeGen, inst: Air.Inst.Index) InnerError!void {
var lowest: ?u32 = null;
var highest: ?u32 = null;
for (0..names.len) |name_index| {
const err_int: Module.ErrorInt = @intCast(mod.global_error_set.getIndex(names.get(ip)[name_index]).?);
const err_int: Zcu.ErrorInt = @intCast(mod.global_error_set.getIndex(names.get(ip)[name_index]).?);
if (lowest) |*l| {
if (err_int < l.*) {
l.* = err_int;
src/arch/wasm/Emit.zig
+2 -4
View File
@@ -6,8 +6,6 @@ const std = @import("std");
const Mir = @import("Mir.zig");
const link = @import("../../link.zig");
const Zcu = @import("../../Zcu.zig");
/// Deprecated.
const Module = Zcu;
const InternPool = @import("../../InternPool.zig");
const codegen = @import("../../codegen.zig");
const leb128 = std.leb;
@@ -18,7 +16,7 @@ mir: Mir,
bin_file: *link.File.Wasm,
/// Possible error message. When set, the value is allocated and
/// must be freed manually.
error_msg: ?*Module.ErrorMsg = null,
error_msg: ?*Zcu.ErrorMsg = null,
/// The binary representation that will be emit by this module.
code: *std.ArrayList(u8),
/// List of allocated locals.
@@ -259,7 +257,7 @@ fn fail(emit: *Emit, comptime format: []const u8, args: anytype) InnerError {
const comp = emit.bin_file.base.comp;
const zcu = comp.module.?;
const gpa = comp.gpa;
emit.error_msg = try Module.ErrorMsg.create(gpa, zcu.declPtr(emit.decl_index).navSrcLoc(zcu).upgrade(zcu), format, args);
emit.error_msg = try Zcu.ErrorMsg.create(gpa, zcu.declPtr(emit.decl_index).navSrcLoc(zcu).upgrade(zcu), format, args);
return error.EmitFail;
}
src/arch/wasm/abi.zig
+2 -4
View File
@@ -10,8 +10,6 @@ const assert = std.debug.assert;
const Type = @import("../../type.zig").Type;
const Zcu = @import("../../Zcu.zig");
/// Deprecated.
const Module = Zcu;
/// Defines how to pass a type as part of a function signature,
/// both for parameters as well as return values.
@@ -24,7 +22,7 @@ const direct: [2]Class = .{ .direct, .none };
/// Classifies a given Zig type to determine how they must be passed
/// or returned as value within a wasm function.
/// When all elements result in `.none`, no value must be passed in or returned.
pub fn classifyType(ty: Type, mod: *Module) [2]Class {
pub fn classifyType(ty: Type, mod: *Zcu) [2]Class {
const ip = &mod.intern_pool;
const target = mod.getTarget();
if (!ty.hasRuntimeBitsIgnoreComptime(mod)) return none;
@@ -102,7 +100,7 @@ pub fn classifyType(ty: Type, mod: *Module) [2]Class {
/// Returns the scalar type a given type can represent.
/// Asserts given type can be represented as scalar, such as
/// a struct with a single scalar field.
pub fn scalarType(ty: Type, mod: *Module) Type {
pub fn scalarType(ty: Type, mod: *Zcu) Type {
const ip = &mod.intern_pool;
switch (ty.zigTypeTag(mod)) {
.Struct => {
test/behavior/math.zig
+50 -14
View File
@@ -393,9 +393,39 @@ fn comptimeAdd(comptime a: comptime_int, comptime b: comptime_int) comptime_int
return a + b;
}
fn not(comptime T: type, a: T) T {
return ~a;
}
test "binary not" {
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
try expect(not(u0, 0) == 0);
try expect(not(u1, 0) == 1);
try expect(not(u1, 1) == 0);
try expect(not(u5, 0b01001) == 0b10110);
try expect(not(u5, 0b10110) == 0b01001);
try expect(not(u16, 0b10101010_10101010) == 0b01010101_01010101);
try expect(not(u16, 0b01010101_01010101) == 0b10101010_10101010);
try expect(not(u32, 0xAAAA_3333) == 0x5555_CCCC);
try expect(not(u32, 0x5555_CCCC) == 0xAAAA_3333);
try expect(not(u35, 0x4_1111_FFFF) == 0x3_EEEE_0000);
try expect(not(u35, 0x3_EEEE_0000) == 0x4_1111_FFFF);
try expect(not(u48, 0x4567_89AB_CDEF) == 0xBA98_7654_3210);
try expect(not(u48, 0xBA98_7654_3210) == 0x4567_89AB_CDEF);
try expect(not(u64, 0x0123_4567_89AB_CDEF) == 0xFEDC_BA98_7654_3210);
try expect(not(u64, 0xFEDC_BA98_7654_3210) == 0x0123_4567_89AB_CDEF);
try expect(not(i0, 0) == 0);
try expect(not(i1, 0) == -1);
try expect(not(i1, -1) == 0);
try expect(not(i5, -2) == 1);
try expect(not(i5, 3) == -4);
try expect(not(i32, 0) == -1);
try expect(not(i32, -2147483648) == 2147483647);
try expect(not(i64, -1) == 0);
try expect(not(i64, 0) == -1);
try expect(comptime x: {
break :x ~@as(u16, 0b1010101010101010) == 0b0101010101010101;
});
@@ -405,34 +435,40 @@ test "binary not" {
try expect(comptime x: {
break :x ~@as(u0, 0) == 0;
});
try testBinaryNot(0b1010101010101010);
}
fn testBinaryNot(x: u16) !void {
try expect(~x == 0b0101010101010101);
}
test "binary not 128-bit" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
test "binary not big int <= 128 bits" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
try expect(not(u65, 1) == 0x1_FFFFFFFF_FFFFFFFE);
try expect(not(u65, 0x1_FFFFFFFF_FFFFFFFE) == 1);
try expect(not(u96, 0x01234567_89ABCDEF_00000001) == 0xFEDCBA98_76543210_FFFFFFFE);
try expect(not(u96, 0xFEDCBA98_76543210_FFFFFFFE) == 0x01234567_89ABCDEF_00000001);
try expect(not(u128, 0xAAAAAAAA_AAAAAAAA_AAAAAAAA_AAAAAAAA) == 0x55555555_55555555_55555555_55555555);
try expect(not(u128, 0x55555555_55555555_55555555_55555555) == 0xAAAAAAAA_AAAAAAAA_AAAAAAAA_AAAAAAAA);
try expect(not(i65, -1) == 0);
try expect(not(i65, 0) == -1);
try expect(not(i65, -18446744073709551616) == 18446744073709551615);
try expect(not(i65, 18446744073709551615) == -18446744073709551616);
try expect(not(i128, -1) == 0);
try expect(not(i128, 0) == -1);
try expect(not(i128, -200) == 199);
try expect(not(i128, 199) == -200);
try expect(comptime x: {
break :x ~@as(u128, 0x55555555_55555555_55555555_55555555) == 0xaaaaaaaa_aaaaaaaa_aaaaaaaa_aaaaaaaa;
});
try expect(comptime x: {
break :x ~@as(i128, 0x55555555_55555555_55555555_55555555) == @as(i128, @bitCast(@as(u128, 0xaaaaaaaa_aaaaaaaa_aaaaaaaa_aaaaaaaa)));
});
try testBinaryNot128(u128, 0xaaaaaaaa_aaaaaaaa_aaaaaaaa_aaaaaaaa);
try testBinaryNot128(i128, @as(i128, @bitCast(@as(u128, 0xaaaaaaaa_aaaaaaaa_aaaaaaaa_aaaaaaaa))));
}
fn testBinaryNot128(comptime Type: type, x: Type) !void {
try expect(~x == @as(Type, 0x55555555_55555555_55555555_55555555));
}
test "division" {