Fix narrow_icmp_imm (#1343)

2020-01-21 15:20:44 +01:00
parent 175b9641e0
commit ae6ba1e58c
2 changed files with 56 additions and 1 deletions
--- a/cranelift/codegen/src/legalizer/mod.rs
+++ b/cranelift/codegen/src/legalizer/mod.rs
@@ -702,7 +702,7 @@ fn narrow_icmp_imm(

    let imm_low = pos
        .ins()
-        .iconst(ty_half, imm & (1u128 << (ty_half.bits() - 1)) as i64);
+        .iconst(ty_half, imm & ((1u128 << ty_half.bits()) - 1) as i64);
    let imm_high = pos
        .ins()
        .iconst(ty_half, imm.wrapping_shr(ty_half.bits().into()));