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Sign extend constant handling.

This commit is contained in:
Ben Vanik 2014-01-05 02:24:16 -08:00
parent d2a74f9211
commit 81c59c7912
1 changed files with 36 additions and 1 deletions
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37
src/alloy/hir/value.cc
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@ -78,7 +78,42 @@ void Value::ZeroExtend(TypeName target_type) {
}
void Value::SignExtend(TypeName target_type) {
// TODO(benvanik): big matrix.
switch (type) {
case INT8_TYPE:
type = target_type;
switch (target_type) {
case INT16_TYPE:
constant.i16 = constant.i8;
break;
case INT32_TYPE:
constant.i32 = constant.i8;
break;
case INT64_TYPE:
constant.i64 = constant.i8;
break;
}
return;
case INT16_TYPE:
type = target_type;
switch (target_type) {
case INT32_TYPE:
constant.i32 = constant.i16;
break;
case INT64_TYPE:
constant.i64 = constant.i16;
break;
}
return;
case INT32_TYPE:
type = target_type;
switch (target_type) {
case INT64_TYPE:
constant.i64 = constant.i32;
break;
}
return;
}
// Unsupported types.
XEASSERTALWAYS();
}