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Cast rhs to lhs type for shl and shr

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This commit is contained in:
bjorn3 2019-08-14 15:18:05 +02:00
parent b4e55cdedd
commit 9505d60a24
2 changed files with 16 additions and 2 deletions
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2
example/std_example.rs
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@ -48,6 +48,8 @@ fn main() {
assert_eq!(0xFEDCBA987654321123456789ABCDEFu128 as i128 >> 64, 0xFEDCBA98765432i128);
assert_eq!(353985398u128 * 932490u128, 330087843781020u128);
let _a = 1u32 << 2u8;
unsafe {
test_simd();
}

16
src/num.rs
View file

@ -129,8 +129,20 @@ pub fn trans_int_binop<'a, 'tcx: 'a>(
BinOp::BitXor => b.bxor(lhs, rhs),
BinOp::BitAnd => b.band(lhs, rhs),
BinOp::BitOr => b.bor(lhs, rhs),
BinOp::Shl => b.ishl(lhs, rhs),
BinOp::Shr => if signed { b.sshr(lhs, rhs) } else { b.ushr(lhs, rhs) },
BinOp::Shl => {
let lhs_ty = fx.bcx.func.dfg.value_type(lhs);
let rhs = clif_intcast(fx, rhs, lhs_ty, false);
fx.bcx.ins().ishl(lhs, rhs)
}
BinOp::Shr => {
let lhs_ty = fx.bcx.func.dfg.value_type(lhs);
let rhs = clif_intcast(fx, rhs, lhs_ty, false);
if signed {
fx.bcx.ins().sshr(lhs, rhs)
} else {
fx.bcx.ins().ushr(lhs, rhs)
}
}
// Compare binops handles by `codegen_binop`.
_ => unreachable!("{:?}({:?}, {:?})", bin_op, in_lhs.layout().ty, in_rhs.layout().ty),
};