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feat: match on a Union Layout and use index access to get the num layout

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rvcas 2021-12-01 16:25:24 -05:00
parent ba9d01773b
commit 0d74daf7d9
1 changed files with 14 additions and 10 deletions
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24
compiler/gen_llvm/src/llvm/build.rs
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@ -5274,17 +5274,21 @@ fn run_low_level<'a, 'ctx, 'env>(
let (string, _string_layout) = load_symbol_and_layout(scope, &args[0]);
// match on the return layout to figure out which zig builtin we need
let intrinsic = match layout {
Layout::Builtin(Builtin::Int(int_width)) => &bitcode::STR_TO_INT[*int_width],
Layout::Builtin(Builtin::Float(float_width)) => {
&bitcode::STR_TO_FLOAT[*float_width]
}
Layout::Builtin(Builtin::Decimal) => bitcode::STR_TO_DECIMAL,
_ => unreachable!(),
};
if let Layout::Union(UnionLayout::NonRecursive(union_layout)) = layout {
// match on the return layout to figure out which zig builtin we need
let intrinsic = match union_layout[1][0] {
Layout::Builtin(Builtin::Int(int_width)) => &bitcode::STR_TO_INT[int_width],
Layout::Builtin(Builtin::Float(float_width)) => {
&bitcode::STR_TO_FLOAT[float_width]
}
Layout::Builtin(Builtin::Decimal) => bitcode::STR_TO_DECIMAL,
_ => unreachable!(),
};
call_bitcode_fn(env, &[string], intrinsic)
call_bitcode_fn(env, &[string], intrinsic)
} else {
unreachable!()
}
}
StrFromInt => {
// Str.fromInt : Int -> Str