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stage1: Allow comparison with comptime-known vectors

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Since comptime_{int,float} vectors are not allowed (thanks $DEITY) we
can use the element type infos to determine the minimum operand size.
This commit is contained in:
LemonBoy 2020-09-28 17:16:57 +02:00
parent 56b52dd0a3
commit cbbcf60968
2 changed files with 12 additions and 10 deletions
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14
src/ir.cpp
View File

@ -16715,16 +16715,12 @@ static IrInstGen *ir_analyze_bin_op_cmp_numeric(IrAnalyze *ira, IrInst *source_i
}
ZigType *dest_float_type = nullptr;
uint32_t op1_bits;
if (instr_is_comptime(op1)) {
if (instr_is_comptime(op1) && result_type->id != ZigTypeIdVector) {
ZigValue *op1_val = ir_resolve_const(ira, op1, UndefOk);
if (op1_val == nullptr)
return ira->codegen->invalid_inst_gen;
if (op1_val->special == ConstValSpecialUndef)
return ir_const_undef(ira, source_instr, ira->codegen->builtin_types.entry_bool);
if (result_type->id == ZigTypeIdVector) {
ir_add_error(ira, &op1->base, buf_sprintf("compiler bug: TODO: support comptime vector here"));
return ira->codegen->invalid_inst_gen;
}
bool is_unsigned;
if (op1_is_float) {
BigInt bigint = {};
@ -16750,6 +16746,7 @@ static IrInstGen *ir_analyze_bin_op_cmp_numeric(IrAnalyze *ira, IrInst *source_i
op1_bits += 1;
}
} else if (op1_is_float) {
ir_assert(op1_scalar_type->id == ZigTypeIdFloat, source_instr);
dest_float_type = op1_scalar_type;
} else {
ir_assert(op1_scalar_type->id == ZigTypeIdInt, source_instr);
@ -16759,16 +16756,12 @@ static IrInstGen *ir_analyze_bin_op_cmp_numeric(IrAnalyze *ira, IrInst *source_i
}
}
uint32_t op2_bits;
if (instr_is_comptime(op2)) {
if (instr_is_comptime(op2) && result_type->id != ZigTypeIdVector) {
ZigValue *op2_val = ir_resolve_const(ira, op2, UndefOk);
if (op2_val == nullptr)
return ira->codegen->invalid_inst_gen;
if (op2_val->special == ConstValSpecialUndef)
return ir_const_undef(ira, source_instr, ira->codegen->builtin_types.entry_bool);
if (result_type->id == ZigTypeIdVector) {
ir_add_error(ira, &op2->base, buf_sprintf("compiler bug: TODO: support comptime vector here"));
return ira->codegen->invalid_inst_gen;
}
bool is_unsigned;
if (op2_is_float) {
BigInt bigint = {};
@ -16794,6 +16787,7 @@ static IrInstGen *ir_analyze_bin_op_cmp_numeric(IrAnalyze *ira, IrInst *source_i
op2_bits += 1;
}
} else if (op2_is_float) {
ir_assert(op2_scalar_type->id == ZigTypeIdFloat, source_instr);
dest_float_type = op2_scalar_type;
} else {
ir_assert(op2_scalar_type->id == ZigTypeIdInt, source_instr);

8
test/stage1/behavior/vector.zig
View File

@ -274,6 +274,14 @@ test "vector comparison operators" {
expectEqual(@splat(4, true), v1 != v3);
expectEqual(@splat(4, false), v1 != v2);
}
{
// Comptime-known LHS/RHS
var v1: @Vector(4, u32) = [_]u32{ 2, 1, 2, 1 };
const v2 = @splat(4, @as(u32, 2));
const v3: @Vector(4, bool) = [_]bool{ true, false, true, false };
expectEqual(v3, v1 == v2);
expectEqual(v3, v2 == v1);
}
}
};
S.doTheTest();