rust/tests/mir-opt/matches_reduce_branches.match_i8_i16.MatchBranchSimplification.diff

43 lines
825 B
Diff

- // MIR for `match_i8_i16` before MatchBranchSimplification
+ // MIR for `match_i8_i16` after MatchBranchSimplification
fn match_i8_i16(_1: EnumAi8) -> i16 {
debug i => _1;
let mut _0: i16;
let mut _2: i8;
+ let mut _3: i8;
bb0: {
_2 = discriminant(_1);
- switchInt(move _2) -> [255: bb3, 2: bb4, 253: bb2, otherwise: bb1];
- }
-
- bb1: {
- unreachable;
- }
-
- bb2: {
- _0 = const -3_i16;
- goto -> bb5;
- }
-
- bb3: {
- _0 = const -1_i16;
- goto -> bb5;
- }
-
- bb4: {
- _0 = const 2_i16;
- goto -> bb5;
- }
-
- bb5: {
+ StorageLive(_3);
+ _3 = move _2;
+ _0 = _3 as i16 (IntToInt);
+ StorageDead(_3);
return;
}
}