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Fix rotate_left and rotate_right with 128bit shift amount

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Fixes #1114
This commit is contained in:
bjorn3 2021-04-16 14:02:57 +02:00
parent 944308089f
commit 6d6c574289
2 changed files with 11 additions and 0 deletions
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1
example/std_example.rs
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@ -84,6 +84,7 @@ fn main() {
assert_eq!(houndred_i128 as f64, 100.0);
assert_eq!(houndred_f32 as i128, 100);
assert_eq!(houndred_f64 as i128, 100);
assert_eq!(1u128.rotate_left(2), 4);
// Test signed 128bit comparing
let max = usize::MAX as i128;

10
src/intrinsics/mod.rs
View File

@ -632,11 +632,21 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
};
rotate_left, <T>(v x, v y) {
let layout = fx.layout_of(T);
let y = if fx.bcx.func.dfg.value_type(y) == types::I128 {
fx.bcx.ins().ireduce(types::I64, y)
} else {
y
};
let res = fx.bcx.ins().rotl(x, y);
ret.write_cvalue(fx, CValue::by_val(res, layout));
};
rotate_right, <T>(v x, v y) {
let layout = fx.layout_of(T);
let y = if fx.bcx.func.dfg.value_type(y) == types::I128 {
fx.bcx.ins().ireduce(types::I64, y)
} else {
y
};
let res = fx.bcx.ins().rotr(x, y);
ret.write_cvalue(fx, CValue::by_val(res, layout));
};