Apply suggestions from code review

Co-authored-by: Nikita Popov <github@npopov.com>

Author: tesuji

tests/assembly/issue-83585-small-pod-struct-equality.rs

@@ -12,7 +12,7 @@ type T2 = [T; 8];
 #[no_mangle]
 // CHECK-LABEL: foo1a
 // CHECK: cmp
-// CHECK-NEXT: set
+// CHECK-NEXT: sete
 // CHECK-NEXT: ret
 pub fn foo1a(a: T1, b: T1) -> bool {
     a == b
@@ -22,7 +22,7 @@ pub fn foo1a(a: T1, b: T1) -> bool {
 // CHECK-LABEL: foo1b
 // CHECK: mov
 // CHECK-NEXT: cmp
-// CHECK-NEXT: set
+// CHECK-NEXT: sete
 // CHECK-NEXT: ret
 pub fn foo1b(a: &T1, b: &T1) -> bool {
     a == b

tests/codegen/issues/issue-36010-some-box-is_some.rs

@@ -13,15 +13,15 @@ fn foo<T>(a: &mut T, b: T) -> bool {
 
 // CHECK-LABEL: @foo_u32
 // CHECK: store i32
-// CHECK-NEXT: ret i1
+// CHECK-NEXT: ret i1 true
 #[no_mangle]
 pub fn foo_u32(a: &mut u32, b: u32) -> bool {
     foo(a, b)
 }
 
 // CHECK-LABEL: @foo_box
 // CHECK: store ptr
-// CHECK-NEXT: ret i1
+// CHECK-NEXT: ret i1 true
 #[no_mangle]
 pub fn foo_box(a: &mut Box<u32>, b: Box<u32>) -> bool {
     foo(a, b)

tests/codegen/issues/issue-74938-array-split-at.rs

@@ -8,7 +8,7 @@ pub type T = u8;
 #[no_mangle]
 // CHECK-LABEL: @split_mutiple
 // CHECK-NOT: unreachable
-pub fn split_mutiple(slice: &[T]) -> (&[T], &[T]) {
+pub fn split_multiple(slice: &[T]) -> (&[T], &[T]) {
     let len = slice.len() / N;
     slice.split_at(len * N)
 }

tests/codegen/slice-pointer-nonnull-unwrap.rs

@@ -5,7 +5,7 @@
 use std::ptr::NonNull;
 
 // CHECK-LABEL: @slice_ptr_len_1
-// CHECK: {{.*}}:
+// CHECK-NEXT: {{.*}}:
 // CHECK-NEXT: ret i64 %ptr.1
 #[no_mangle]
 pub fn slice_ptr_len_1(ptr: *const [u8]) -> usize {