M-Labs/nac3
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Code Issues 98 Pull Requests 19 Releases Wiki Activity

core: Fix conversion from float to unsigned types

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These conversions also need to wraparound.
This commit is contained in:
David Mak 2023-11-03 15:34:07 +08:00
parent 7a5a2db842
commit 8ad09748d0
1 changed files with 64 additions and 19 deletions
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83
nac3core/src/toplevel/builtins.rs
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@ -650,13 +650,34 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
.build_int_truncate(arg.into_int_value(), ctx.ctx.i32_type(), "trunc") .build_int_truncate(arg.into_int_value(), ctx.ctx.i32_type(), "trunc")
.into() .into()
} else if ctx.unifier.unioned(arg_ty, float) { } else if ctx.unifier.unioned(arg_ty, float) {
ctx.builder let llvm_i32 = ctx.ctx.i32_type();
let llvm_i64 = ctx.ctx.i64_type();
let arg = arg.into_float_value();
let arg_gez = ctx.builder
.build_float_compare(FloatPredicate::OGE, arg, arg.get_type().const_zero(), "");
let to_int32 = ctx.builder
.build_float_to_signed_int(
arg,
llvm_i32,
""
);
let to_uint64 = ctx.builder
.build_float_to_unsigned_int( .build_float_to_unsigned_int(
arg.into_float_value(), arg,
ctx.ctx.i32_type(), llvm_i64,
"ftoi", ""
) );
.into()
let val = ctx.builder.build_select(
arg_gez,
ctx.builder.build_int_truncate(to_uint64, llvm_i32, ""),
to_int32,
"conv"
);
val.into()
} else { } else {
unreachable!(); unreachable!();
}; };
@ -703,13 +724,33 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
{ {
arg arg
} else if ctx.unifier.unioned(arg_ty, float) { } else if ctx.unifier.unioned(arg_ty, float) {
ctx.builder let llvm_i64 = ctx.ctx.i64_type();
let arg = arg.into_float_value();
let arg_gez = ctx.builder
.build_float_compare(FloatPredicate::OGE, arg, arg.get_type().const_zero(), "");
let to_int64 = ctx.builder
.build_float_to_signed_int(
arg,
llvm_i64,
""
);
let to_uint64 = ctx.builder
.build_float_to_unsigned_int( .build_float_to_unsigned_int(
arg.into_float_value(), arg,
ctx.ctx.i64_type(), llvm_i64,
"ftoi", ""
) );
.into()
let val = ctx.builder.build_select(
arg_gez,
to_uint64,
to_int64,
"conv"
);
val.into()
} else { } else {
unreachable!(); unreachable!();
}; };
@ -732,16 +773,20 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
resolver: None, resolver: None,
codegen_callback: Some(Arc::new(GenCall::new(Box::new( codegen_callback: Some(Arc::new(GenCall::new(Box::new(
|ctx, _, fun, args, generator| { |ctx, _, fun, args, generator| {
let int32 = ctx.primitives.int32; let PrimitiveStore {
let int64 = ctx.primitives.int64; int32,
let boolean = ctx.primitives.bool; int64,
let float = ctx.primitives.float; uint32,
uint64,
float,
bool: boolean,
..
} = ctx.primitives;
let arg_ty = fun.0.args[0].ty; let arg_ty = fun.0.args[0].ty;
let arg = args[0].1.clone().to_basic_value_enum(ctx, generator, arg_ty)?; let arg = args[0].1.clone().to_basic_value_enum(ctx, generator, arg_ty)?;
Ok( Ok(
if ctx.unifier.unioned(arg_ty, boolean) if [boolean, int32, int64].iter().any(|ty| ctx.unifier.unioned(arg_ty, *ty))
|| ctx.unifier.unioned(arg_ty, int32)
|| ctx.unifier.unioned(arg_ty, int64)
{ {
let arg = arg.into_int_value(); let arg = arg.into_int_value();
let val = ctx let val = ctx