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wasm: implement @ceil, @floor and @trunc

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This commit is contained in:
Luuk de Gram 2022-06-11 16:14:52 +02:00
parent f05e09a0cf
commit 13123afedb
1 changed files with 31 additions and 3 deletions
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34
src/arch/wasm/CodeGen.zig
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@ -1446,6 +1446,9 @@ fn genInst(self: *Self, inst: Air.Inst.Index) !WValue {
.div_trunc,
=> self.airDiv(inst),
.div_floor => self.airDivFloor(inst),
.ceil => self.airCeilFloorTrunc(inst, .ceil),
.floor => self.airCeilFloorTrunc(inst, .floor),
.trunc_float => self.airCeilFloorTrunc(inst, .trunc),
.bit_and => self.airBinOp(inst, .@"and"),
.bit_or => self.airBinOp(inst, .@"or"),
.bool_and => self.airBinOp(inst, .@"and"),
@ -1606,10 +1609,7 @@ fn genInst(self: *Self, inst: Air.Inst.Index) !WValue {
.log2,
.log10,
.fabs,
.floor,
.ceil,
.round,
.trunc_float,
.cmpxchg_weak,
.cmpxchg_strong,
@ -4872,3 +4872,31 @@ fn signAbsValue(self: *Self, operand: WValue, ty: Type) InnerError!WValue {
try self.addLabel(.local_set, result.local);
return result;
}
fn airCeilFloorTrunc(self: *Self, inst: Air.Inst.Index, op: Op) InnerError!WValue {
if (self.liveness.isUnused(inst)) return WValue{ .none = {} };
const un_op = self.air.instructions.items(.data)[inst].un_op;
const ty = self.air.typeOfIndex(inst);
if (ty.zigTypeTag() == .Vector) {
return self.fail("TODO: Implement `@ceil` for vectors", .{});
}
const operand = try self.resolveInst(un_op);
try self.emitWValue(operand);
switch (ty.floatBits(self.target)) {
32, 64 => {
const opcode = buildOpcode(.{
.op = op,
.valtype1 = typeToValtype(ty, self.target),
});
try self.addTag(Mir.Inst.Tag.fromOpcode(opcode));
},
else => |bit_size| return self.fail("TODO: Implement `@ceil` for floats with bitsize {d}", .{bit_size}),
}
const result = try self.allocLocal(ty);
try self.addLabel(.local_set, result.local);
return result;
}