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Allow booleans to be assigned to a 1-bit bit field value

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gingerBill
2019-05-09 13:04:15 +01:00
parent a66612e8ae
commit 71a733e3b5
4 changed files with 28 additions and 9 deletions
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src/ir.cpp
+10 -7
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@@ -3377,6 +3377,7 @@ void ir_addr_store(irProcedure *proc, irAddr const &addr, irValue *value) {
}
irValue *ptr = ir_emit_conv(proc, bytes, alloc_type_pointer(int_type));
irValue *sv = ir_emit_load(proc, ptr, 1);
// NOTE(bill): Zero out the lower bits that need to be stored to
sv = ir_emit_arith(proc, Token_Shr, sv, ir_const_int(size_in_bits), int_type);
@@ -3393,23 +3394,25 @@ void ir_addr_store(irProcedure *proc, irAddr const &addr, irValue *value) {
{
irValue *shift_amount = ir_const_int(bit_inset);
irValue *ptr = ir_emit_conv(proc, bytes, alloc_type_pointer(t_u8));
irValue *v = ir_emit_conv(proc, value, t_u8);
v = ir_emit_arith(proc, Token_Shl, v, shift_amount, int_type);
v = ir_emit_arith(proc, Token_Shl, v, shift_amount, t_u8);
irValue *sv = ir_emit_load(proc, bytes, 1);
// NOTE(bill): Zero out the upper bits that need to be stored to
sv = ir_emit_arith(proc, Token_Shl, sv, ir_const_int(bit_inset), int_type);
sv = ir_emit_arith(proc, Token_Shr, sv, ir_const_int(bit_inset), int_type);
sv = ir_emit_arith(proc, Token_Shl, sv, ir_const_int(8-bit_inset), t_u8);
sv = ir_emit_arith(proc, Token_Shr, sv, ir_const_int(8-bit_inset), t_u8);
v = ir_emit_arith(proc, Token_Or, sv, v, int_type);
ir_emit_store(proc, bytes, v, true);
v = ir_emit_arith(proc, Token_Or, sv, v, t_u8);
ir_emit_store(proc, ptr, v, true);
}
// Remaining bytes
if (bit_inset+size_in_bits > 8) {
irValue *shift_amount = ir_const_int(bit_inset);
irValue *ptr = ir_emit_conv(proc, ir_emit_ptr_offset(proc, bytes, v_one), alloc_type_pointer(int_type));
irValue *v = ir_emit_arith(proc, Token_Shr, value, shift_amount, int_type);
irValue *v = ir_emit_conv(proc, value, int_type);
v = ir_emit_arith(proc, Token_Shr, v, ir_const_int(8-bit_inset), int_type);
irValue *sv = ir_emit_load(proc, ptr, 1);
// NOTE(bill): Zero out the lower bits that need to be stored to