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Auto merge of #109983 - tmiasko:inline-try, r=bjorn3

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Inline try_from and try_into

To avoid link time dependency between core and compiler-builtins, when using opt-level that implicitly enables -Zshare-generics.

While compiler-builtins should be compiled with -Zshare-generics disabled, the -Zbuild-std does not ensure this at the moment.

r? `@bjorn3`
This commit is contained in:
bors 2023-04-07 17:06:24 +00:00
parent 94524020ea 7ddc245b14
commit da636956dd
5 changed files with 300 additions and 184 deletions
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2
library/core/src/convert/mod.rs
View file

@ -764,6 +764,7 @@ impl<T, U> const TryInto<U> for T
{
type Error = U::Error;
#[inline]
fn try_into(self) -> Result<U, U::Error> {
U::try_from(self)
}
@ -779,6 +780,7 @@ impl<T, U> const TryFrom<U> for T
{
type Error = Infallible;
#[inline]
fn try_from(value: U) -> Result<Self, Self::Error> {
Ok(U::into(value))
}

123
tests/mir-opt/inline/unchecked_shifts.unchecked_shl_unsigned_smaller.Inline.diff
View file

@ -14,36 +14,45 @@
+ let mut _6: std::option::Option<u16>; // in scope 1 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ let mut _7: std::result::Result<u16, std::num::TryFromIntError>; // in scope 1 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ scope 2 {
+ scope 3 (inlined Result::<u16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ debug self => _7; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ let mut _8: isize; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ let _9: u16; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 4 {
+ debug x => _9; // in scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 3 (inlined <u32 as TryInto<u16>>::try_into) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ debug self => _4; // in scope 3 at $SRC_DIR/core/src/convert/mod.rs:LL:COL
+ scope 4 (inlined convert::num::<impl TryFrom<u32> for u16>::try_from) { // at $SRC_DIR/core/src/convert/mod.rs:LL:COL
+ debug u => _4; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _8: bool; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _9: u32; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _10: u16; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+ scope 5 {
+ scope 6 {
+ debug x => const TryFromIntError(()); // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ scope 5 (inlined Result::<u16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ debug self => _7; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ let mut _11: isize; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ let _12: u16; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 6 {
+ debug x => _12; // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ scope 7 {
+ scope 8 {
+ debug x => const TryFromIntError(()); // in scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ }
+ }
+ scope 7 (inlined #[track_caller] Option::<u16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ debug self => _6; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _10: &std::option::Option<u16>; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _11: isize; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 8 {
+ debug val => _5; // in scope 8 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 9 (inlined #[track_caller] Option::<u16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ debug self => _6; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _13: &std::option::Option<u16>; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _14: isize; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 10 {
+ debug val => _5; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+ scope 9 {
+ scope 11 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 12 {
+ scope 13 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
+ scope 11 {
+ scope 13 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 14 {
+ scope 15 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
+ }
+ }
+ }
+ }
+ scope 10 (inlined Option::<u16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ debug self => _10; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 12 (inlined Option::<u16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ debug self => _13; // in scope 12 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+ }
+ }
@ -55,58 +64,78 @@
StorageLive(_4); // scope 0 at $DIR/unchecked_shifts.rs:+1:21: +1:22
_4 = _2; // scope 0 at $DIR/unchecked_shifts.rs:+1:21: +1:22
- _0 = core::num::<impl u16>::unchecked_shl(move _3, move _4) -> bb1; // scope 0 at $DIR/unchecked_shifts.rs:+1:5: +1:23
- // mir::Constant
- // + span: $DIR/unchecked_shifts.rs:11:7: 11:20
- // + literal: Const { ty: unsafe fn(u16, u32) -> u16 {core::num::<impl u16>::unchecked_shl}, val: Value(<ZST>) }
+ StorageLive(_5); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageLive(_6); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageLive(_7); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _7 = <u32 as TryInto<u16>>::try_into(_4) -> bb1; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
// mir::Constant
- // + span: $DIR/unchecked_shifts.rs:11:7: 11:20
- // + literal: Const { ty: unsafe fn(u16, u32) -> u16 {core::num::<impl u16>::unchecked_shl}, val: Value(<ZST>) }
+ // + span: $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ // + literal: Const { ty: fn(u32) -> Result<u16, <u32 as TryInto<u16>>::Error> {<u32 as TryInto<u16>>::try_into}, val: Value(<ZST>) }
+ StorageLive(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageLive(_9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _9 = const 65535_u32; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _8 = Gt(_4, move _9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageDead(_9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ switchInt(move _8) -> [0: bb4, otherwise: bb3]; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb1: {
+ StorageLive(_9); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _8 = discriminant(_7); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ switchInt(move _8) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageDead(_12); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageLive(_13); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _14 = discriminant(_6); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ switchInt(move _14) -> [1: bb9, otherwise: bb7]; // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+
+ bb2: {
+ StorageDead(_9); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageLive(_10); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _11 = discriminant(_6); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ switchInt(move _11) -> [1: bb7, otherwise: bb5]; // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+
+ bb3: {
+ StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageDead(_4); // scope 0 at $DIR/unchecked_shifts.rs:+1:22: +1:23
StorageDead(_3); // scope 0 at $DIR/unchecked_shifts.rs:+1:22: +1:23
return; // scope 0 at $DIR/unchecked_shifts.rs:+2:2: +2:2
+ }
+
+ bb3: {
+ _7 = Result::<u16, TryFromIntError>::Err(const TryFromIntError(())); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ // mir::Constant
+ // + span: no-location
+ // + literal: Const { ty: TryFromIntError, val: Value(<ZST>) }
+ goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+
+ bb4: {
+ _6 = Option::<u16>::None; // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb2; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageLive(_10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _10 = _4 as u16 (IntToInt); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _7 = Result::<u16, TryFromIntError>::Ok(move _10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageDead(_10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+
+ bb5: {
+ unreachable; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageDead(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageLive(_12); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _11 = discriminant(_7); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ switchInt(move _11) -> [0: bb8, 1: bb6, otherwise: bb7]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb6: {
+ _9 = move ((_7 as Ok).0: u16); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<u16>::Some(move _9); // scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb2; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<u16>::None; // scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb1; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb7: {
+ _5 = move ((_6 as Some).0: u16); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ StorageDead(_10); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ unreachable; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb8: {
+ _12 = move ((_7 as Ok).0: u16); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<u16>::Some(move _12); // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb1; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb9: {
+ _5 = move ((_6 as Some).0: u16); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ StorageDead(_13); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ StorageDead(_6); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _0 = unchecked_shl::<u16>(_3, move _5) -> [return: bb3, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ _0 = unchecked_shl::<u16>(_3, move _5) -> [return: bb2, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ // mir::Constant
+ // + span: $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
+ // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(u16, u16) -> u16 {unchecked_shl::<u16>}, val: Value(<ZST>) }

118
tests/mir-opt/inline/unchecked_shifts.unchecked_shl_unsigned_smaller.PreCodegen.after.mir
View file

@ -11,36 +11,45 @@ fn unchecked_shl_unsigned_smaller(_1: u16, _2: u32) -> u16 {
let mut _4: std::option::Option<u16>; // in scope 1 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
let mut _5: std::result::Result<u16, std::num::TryFromIntError>; // in scope 1 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
scope 2 {
scope 3 (inlined Result::<u16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
debug self => _5; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
let mut _6: isize; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
let _7: u16; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
scope 4 {
debug x => _7; // in scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
scope 3 (inlined <u32 as TryInto<u16>>::try_into) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
debug self => _2; // in scope 3 at $SRC_DIR/core/src/convert/mod.rs:LL:COL
scope 4 (inlined convert::num::<impl TryFrom<u32> for u16>::try_from) { // at $SRC_DIR/core/src/convert/mod.rs:LL:COL
debug u => _2; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _6: bool; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _7: u32; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _8: u16; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
scope 5 {
scope 6 {
debug x => const TryFromIntError(()); // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
}
scope 5 (inlined Result::<u16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
debug self => _5; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
let mut _9: isize; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
let _10: u16; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
scope 6 {
debug x => _10; // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
}
scope 7 {
scope 8 {
debug x => const TryFromIntError(()); // in scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
}
}
}
scope 7 (inlined #[track_caller] Option::<u16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
debug self => _4; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _8: &std::option::Option<u16>; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _9: isize; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
scope 8 {
debug val => _3; // in scope 8 at $SRC_DIR/core/src/option.rs:LL:COL
scope 9 (inlined #[track_caller] Option::<u16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
debug self => _4; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _11: &std::option::Option<u16>; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _12: isize; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
scope 10 {
debug val => _3; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
}
scope 9 {
scope 11 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
scope 12 {
scope 13 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
scope 11 {
scope 13 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
scope 14 {
scope 15 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
}
}
}
}
scope 10 (inlined Option::<u16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
debug self => _8; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
scope 12 (inlined Option::<u16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
debug self => _11; // in scope 12 at $SRC_DIR/core/src/option.rs:LL:COL
}
}
}
@ -50,51 +59,70 @@ fn unchecked_shl_unsigned_smaller(_1: u16, _2: u32) -> u16 {
StorageLive(_3); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageLive(_4); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageLive(_5); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_5 = <u32 as TryInto<u16>>::try_into(_2) -> bb1; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
// mir::Constant
// + span: $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
// + literal: Const { ty: fn(u32) -> Result<u16, <u32 as TryInto<u16>>::Error> {<u32 as TryInto<u16>>::try_into}, val: Value(<ZST>) }
StorageLive(_6); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageLive(_7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_7 = const 65535_u32; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_6 = Gt(_2, move _7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageDead(_7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
switchInt(move _6) -> [0: bb4, otherwise: bb3]; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb1: {
StorageLive(_7); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_6 = discriminant(_5); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
switchInt(move _6) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
StorageDead(_10); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageLive(_11); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_12 = discriminant(_4); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
switchInt(move _12) -> [1: bb9, otherwise: bb7]; // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
}
bb2: {
StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageLive(_8); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_9 = discriminant(_4); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
switchInt(move _9) -> [1: bb7, otherwise: bb5]; // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
}
bb3: {
StorageDead(_3); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
return; // scope 0 at $DIR/unchecked_shifts.rs:+2:2: +2:2
}
bb3: {
_5 = Result::<u16, TryFromIntError>::Err(const TryFromIntError(())); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
// mir::Constant
// + span: no-location
// + literal: Const { ty: TryFromIntError, val: Value(<ZST>) }
goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb4: {
_4 = Option::<u16>::None; // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb2; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
StorageLive(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_8 = _2 as u16 (IntToInt); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_5 = Result::<u16, TryFromIntError>::Ok(move _8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageDead(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb5: {
unreachable; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
StorageDead(_6); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageLive(_10); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_9 = discriminant(_5); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
switchInt(move _9) -> [0: bb8, 1: bb6, otherwise: bb7]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb6: {
_7 = move ((_5 as Ok).0: u16); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<u16>::Some(move _7); // scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb2; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<u16>::None; // scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb1; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb7: {
_3 = move ((_4 as Some).0: u16); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
StorageDead(_8); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
unreachable; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb8: {
_10 = move ((_5 as Ok).0: u16); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<u16>::Some(move _10); // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb1; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb9: {
_3 = move ((_4 as Some).0: u16); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
StorageDead(_11); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
StorageDead(_4); // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_0 = unchecked_shl::<u16>(_1, move _3) -> [return: bb3, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
_0 = unchecked_shl::<u16>(_1, move _3) -> [return: bb2, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
// mir::Constant
// + span: $SRC_DIR/core/src/num/uint_macros.rs:LL:COL
// + literal: Const { ty: unsafe extern "rust-intrinsic" fn(u16, u16) -> u16 {unchecked_shl::<u16>}, val: Value(<ZST>) }

123
tests/mir-opt/inline/unchecked_shifts.unchecked_shr_signed_smaller.Inline.diff
View file

@ -14,36 +14,45 @@
+ let mut _6: std::option::Option<i16>; // in scope 1 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ let mut _7: std::result::Result<i16, std::num::TryFromIntError>; // in scope 1 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ scope 2 {
+ scope 3 (inlined Result::<i16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ debug self => _7; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ let mut _8: isize; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ let _9: i16; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 4 {
+ debug x => _9; // in scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 3 (inlined <u32 as TryInto<i16>>::try_into) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ debug self => _4; // in scope 3 at $SRC_DIR/core/src/convert/mod.rs:LL:COL
+ scope 4 (inlined convert::num::<impl TryFrom<u32> for i16>::try_from) { // at $SRC_DIR/core/src/convert/mod.rs:LL:COL
+ debug u => _4; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _8: bool; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _9: u32; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ let mut _10: i16; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+ scope 5 {
+ scope 6 {
+ debug x => const TryFromIntError(()); // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ scope 5 (inlined Result::<i16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ debug self => _7; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ let mut _11: isize; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ let _12: i16; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ scope 6 {
+ debug x => _12; // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ scope 7 {
+ scope 8 {
+ debug x => const TryFromIntError(()); // in scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+ }
+ }
+ scope 7 (inlined #[track_caller] Option::<i16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ debug self => _6; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _10: &std::option::Option<i16>; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _11: isize; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 8 {
+ debug val => _5; // in scope 8 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 9 (inlined #[track_caller] Option::<i16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ debug self => _6; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _13: &std::option::Option<i16>; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ let mut _14: isize; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 10 {
+ debug val => _5; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+ scope 9 {
+ scope 11 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 12 {
+ scope 13 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
+ scope 11 {
+ scope 13 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 14 {
+ scope 15 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
+ }
+ }
+ }
+ }
+ scope 10 (inlined Option::<i16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ debug self => _10; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
+ scope 12 (inlined Option::<i16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
+ debug self => _13; // in scope 12 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+ }
+ }
@ -55,58 +64,78 @@
StorageLive(_4); // scope 0 at $DIR/unchecked_shifts.rs:+1:21: +1:22
_4 = _2; // scope 0 at $DIR/unchecked_shifts.rs:+1:21: +1:22
- _0 = core::num::<impl i16>::unchecked_shr(move _3, move _4) -> bb1; // scope 0 at $DIR/unchecked_shifts.rs:+1:5: +1:23
- // mir::Constant
- // + span: $DIR/unchecked_shifts.rs:17:7: 17:20
- // + literal: Const { ty: unsafe fn(i16, u32) -> i16 {core::num::<impl i16>::unchecked_shr}, val: Value(<ZST>) }
+ StorageLive(_5); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageLive(_6); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageLive(_7); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _7 = <u32 as TryInto<i16>>::try_into(_4) -> bb1; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
// mir::Constant
- // + span: $DIR/unchecked_shifts.rs:17:7: 17:20
- // + literal: Const { ty: unsafe fn(i16, u32) -> i16 {core::num::<impl i16>::unchecked_shr}, val: Value(<ZST>) }
+ // + span: $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ // + literal: Const { ty: fn(u32) -> Result<i16, <u32 as TryInto<i16>>::Error> {<u32 as TryInto<i16>>::try_into}, val: Value(<ZST>) }
+ StorageLive(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageLive(_9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _9 = const 32767_u32; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _8 = Gt(_4, move _9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageDead(_9); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ switchInt(move _8) -> [0: bb4, otherwise: bb3]; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb1: {
+ StorageLive(_9); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _8 = discriminant(_7); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ switchInt(move _8) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageDead(_12); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageLive(_13); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _14 = discriminant(_6); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ switchInt(move _14) -> [1: bb9, otherwise: bb7]; // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+
+ bb2: {
+ StorageDead(_9); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageLive(_10); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _11 = discriminant(_6); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ switchInt(move _11) -> [1: bb7, otherwise: bb5]; // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ }
+
+ bb3: {
+ StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageDead(_4); // scope 0 at $DIR/unchecked_shifts.rs:+1:22: +1:23
StorageDead(_3); // scope 0 at $DIR/unchecked_shifts.rs:+1:22: +1:23
return; // scope 0 at $DIR/unchecked_shifts.rs:+2:2: +2:2
+ }
+
+ bb3: {
+ _7 = Result::<i16, TryFromIntError>::Err(const TryFromIntError(())); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ // mir::Constant
+ // + span: no-location
+ // + literal: Const { ty: TryFromIntError, val: Value(<ZST>) }
+ goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+
+ bb4: {
+ _6 = Option::<i16>::None; // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb2; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageLive(_10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _10 = _4 as i16 (IntToInt); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ _7 = Result::<i16, TryFromIntError>::Ok(move _10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageDead(_10); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ }
+
+ bb5: {
+ unreachable; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ StorageDead(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
+ StorageLive(_12); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _11 = discriminant(_7); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ switchInt(move _11) -> [0: bb8, 1: bb6, otherwise: bb7]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb6: {
+ _9 = move ((_7 as Ok).0: i16); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<i16>::Some(move _9); // scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb2; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<i16>::None; // scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb1; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb7: {
+ _5 = move ((_6 as Some).0: i16); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
+ StorageDead(_10); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ unreachable; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb8: {
+ _12 = move ((_7 as Ok).0: i16); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ _6 = Option::<i16>::Some(move _12); // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
+ goto -> bb1; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
+ }
+
+ bb9: {
+ _5 = move ((_6 as Some).0: i16); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
+ StorageDead(_13); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ StorageDead(_6); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _0 = unchecked_shr::<i16>(_3, move _5) -> [return: bb3, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ _0 = unchecked_shr::<i16>(_3, move _5) -> [return: bb2, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ // mir::Constant
+ // + span: $SRC_DIR/core/src/num/int_macros.rs:LL:COL
+ // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(i16, i16) -> i16 {unchecked_shr::<i16>}, val: Value(<ZST>) }

118
tests/mir-opt/inline/unchecked_shifts.unchecked_shr_signed_smaller.PreCodegen.after.mir
View file

@ -11,36 +11,45 @@ fn unchecked_shr_signed_smaller(_1: i16, _2: u32) -> i16 {
let mut _4: std::option::Option<i16>; // in scope 1 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
let mut _5: std::result::Result<i16, std::num::TryFromIntError>; // in scope 1 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
scope 2 {
scope 3 (inlined Result::<i16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
debug self => _5; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
let mut _6: isize; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
let _7: i16; // in scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
scope 4 {
debug x => _7; // in scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
scope 3 (inlined <u32 as TryInto<i16>>::try_into) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
debug self => _2; // in scope 3 at $SRC_DIR/core/src/convert/mod.rs:LL:COL
scope 4 (inlined convert::num::<impl TryFrom<u32> for i16>::try_from) { // at $SRC_DIR/core/src/convert/mod.rs:LL:COL
debug u => _2; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _6: bool; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _7: u32; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
let mut _8: i16; // in scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
scope 5 {
scope 6 {
debug x => const TryFromIntError(()); // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
}
scope 5 (inlined Result::<i16, TryFromIntError>::ok) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
debug self => _5; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
let mut _9: isize; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
let _10: i16; // in scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
scope 6 {
debug x => _10; // in scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
}
scope 7 {
scope 8 {
debug x => const TryFromIntError(()); // in scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
}
}
}
scope 7 (inlined #[track_caller] Option::<i16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
debug self => _4; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _8: &std::option::Option<i16>; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _9: isize; // in scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
scope 8 {
debug val => _3; // in scope 8 at $SRC_DIR/core/src/option.rs:LL:COL
scope 9 (inlined #[track_caller] Option::<i16>::unwrap_unchecked) { // at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
debug self => _4; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _11: &std::option::Option<i16>; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
let mut _12: isize; // in scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
scope 10 {
debug val => _3; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
}
scope 9 {
scope 11 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
scope 12 {
scope 13 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
scope 11 {
scope 13 (inlined unreachable_unchecked) { // at $SRC_DIR/core/src/option.rs:LL:COL
scope 14 {
scope 15 (inlined unreachable_unchecked::runtime) { // at $SRC_DIR/core/src/intrinsics.rs:LL:COL
}
}
}
}
scope 10 (inlined Option::<i16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
debug self => _8; // in scope 10 at $SRC_DIR/core/src/option.rs:LL:COL
scope 12 (inlined Option::<i16>::is_some) { // at $SRC_DIR/core/src/option.rs:LL:COL
debug self => _11; // in scope 12 at $SRC_DIR/core/src/option.rs:LL:COL
}
}
}
@ -50,51 +59,70 @@ fn unchecked_shr_signed_smaller(_1: i16, _2: u32) -> i16 {
StorageLive(_3); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageLive(_4); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageLive(_5); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_5 = <u32 as TryInto<i16>>::try_into(_2) -> bb1; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
// mir::Constant
// + span: $SRC_DIR/core/src/num/int_macros.rs:LL:COL
// + literal: Const { ty: fn(u32) -> Result<i16, <u32 as TryInto<i16>>::Error> {<u32 as TryInto<i16>>::try_into}, val: Value(<ZST>) }
StorageLive(_6); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageLive(_7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_7 = const 32767_u32; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_6 = Gt(_2, move _7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageDead(_7); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
switchInt(move _6) -> [0: bb4, otherwise: bb3]; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb1: {
StorageLive(_7); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_6 = discriminant(_5); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
switchInt(move _6) -> [0: bb6, 1: bb4, otherwise: bb5]; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
StorageDead(_10); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageLive(_11); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_12 = discriminant(_4); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
switchInt(move _12) -> [1: bb9, otherwise: bb7]; // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
}
bb2: {
StorageDead(_7); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageDead(_5); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageLive(_8); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_9 = discriminant(_4); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
switchInt(move _9) -> [1: bb7, otherwise: bb5]; // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
}
bb3: {
StorageDead(_3); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
return; // scope 0 at $DIR/unchecked_shifts.rs:+2:2: +2:2
}
bb3: {
_5 = Result::<i16, TryFromIntError>::Err(const TryFromIntError(())); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
// mir::Constant
// + span: no-location
// + literal: Const { ty: TryFromIntError, val: Value(<ZST>) }
goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb4: {
_4 = Option::<i16>::None; // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb2; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
StorageLive(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_8 = _2 as i16 (IntToInt); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
_5 = Result::<i16, TryFromIntError>::Ok(move _8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageDead(_8); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
goto -> bb5; // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
}
bb5: {
unreachable; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
StorageDead(_6); // scope 4 at $SRC_DIR/core/src/convert/num.rs:LL:COL
StorageLive(_10); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_9 = discriminant(_5); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
switchInt(move _9) -> [0: bb8, 1: bb6, otherwise: bb7]; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb6: {
_7 = move ((_5 as Ok).0: i16); // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<i16>::Some(move _7); // scope 4 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb2; // scope 3 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<i16>::None; // scope 8 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb1; // scope 7 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb7: {
_3 = move ((_4 as Some).0: i16); // scope 7 at $SRC_DIR/core/src/option.rs:LL:COL
StorageDead(_8); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
unreachable; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb8: {
_10 = move ((_5 as Ok).0: i16); // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
_4 = Option::<i16>::Some(move _10); // scope 6 at $SRC_DIR/core/src/result.rs:LL:COL
goto -> bb1; // scope 5 at $SRC_DIR/core/src/result.rs:LL:COL
}
bb9: {
_3 = move ((_4 as Some).0: i16); // scope 9 at $SRC_DIR/core/src/option.rs:LL:COL
StorageDead(_11); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
StorageDead(_4); // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_0 = unchecked_shr::<i16>(_1, move _3) -> [return: bb3, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
_0 = unchecked_shr::<i16>(_1, move _3) -> [return: bb2, unwind unreachable]; // scope 2 at $SRC_DIR/core/src/num/int_macros.rs:LL:COL
// mir::Constant
// + span: $SRC_DIR/core/src/num/int_macros.rs:LL:COL
// + literal: Const { ty: unsafe extern "rust-intrinsic" fn(i16, i16) -> i16 {unchecked_shr::<i16>}, val: Value(<ZST>) }