Auto merge of #137278 - heiseish:101210-extra-codegen-tests, r=scottmcm

added some new test to check for result and options opt

Apologies for the delay. Finally have some time to get back into contributing.

## Context
- Added some tests to show optimization on result and options for 64 and 128 bits
- Relevant issue rust-lang/rust#101210

## Some newb questions from me
- [x] My local llvm IR has `nuw` in `result_nop_match_128` etc whereas [godbolt version](https://rust.godbolt.org/z/Td9zoT5zn) doesn't have. So I put optional there, but not sure if it's desirable (maybe I'm not using the compiled llvm in the repo). I ran the test with
```bash
./x test tests/codegen/try_question_mark_nop.rs
```
- [x] Unless I'm reading it wrongly, but `option_nop_match_128` and `option_nop_traits_128` look to be **not** optimized away?

Update:
Here's the test for future reference
```rust
// CHECK-LABEL: `@option_nop_match_128`
#[no_mangle]
pub fn option_nop_match_128(x: Option<i128>) -> Option<i128> {
    // CHECK: start:
    // CHECK-NEXT: %trunc = trunc nuw i128 %0 to i1
    // CHECK-NEXT: br i1 %trunc, label %bb3, label %bb4
    // CHECK: bb3:
    // CHECK-NEXT: %2 = getelementptr inbounds {{(nuw )?}}i8, ptr %_0, i64 16
    // CHECK-NEXT: store i128 %1, ptr %2, align 16
    // CHECK: bb4:
    // CHECK-NEXT: %storemerge = phi i128 [ 1, %bb3 ], [ 0, %start ]
    // CHECK-NEXT: store i128 %storemerge, ptr %_0, align 16
    // CHECK-NEXT: ret void
    match x {
        Some(x) => Some(x),
        None => None,
    }
}
```

r? `@scottmcm`

Author: bors