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rust/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff

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[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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- // MIR for `main` before ConstDebugInfo
+ // MIR for `main` after ConstDebugInfo
fn main() -> () {
bless mir opt tests
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let mut _0: (); // return place in scope 0 at $DIR/const_debuginfo.rs:+0:11: +0:11
let _1: u8; // in scope 0 at $DIR/const_debuginfo.rs:+1:9: +1:10
let mut _5: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:15: +4:20
let mut _6: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:15: +4:16
let mut _7: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:19: +4:20
let mut _8: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:23: +4:24
Simplify construction of replacement map.
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let mut _12: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:13: +13:16
let mut _13: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:19: +13:22
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 1 {
bless mir opt tests
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- debug x => _1; // in scope 1 at $DIR/const_debuginfo.rs:+1:9: +1:10
+ debug x => const 1_u8; // in scope 1 at $DIR/const_debuginfo.rs:+1:9: +1:10
let _2: u8; // in scope 1 at $DIR/const_debuginfo.rs:+2:9: +2:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 2 {
bless mir opt tests
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- debug y => _2; // in scope 2 at $DIR/const_debuginfo.rs:+2:9: +2:10
+ debug y => const 2_u8; // in scope 2 at $DIR/const_debuginfo.rs:+2:9: +2:10
let _3: u8; // in scope 2 at $DIR/const_debuginfo.rs:+3:9: +3:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 3 {
bless mir opt tests
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- debug z => _3; // in scope 3 at $DIR/const_debuginfo.rs:+3:9: +3:10
+ debug z => const 3_u8; // in scope 3 at $DIR/const_debuginfo.rs:+3:9: +3:10
let _4: u8; // in scope 3 at $DIR/const_debuginfo.rs:+4:9: +4:12
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 4 {
bless mir opt tests
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- debug sum => _4; // in scope 4 at $DIR/const_debuginfo.rs:+4:9: +4:12
+ debug sum => const 6_u8; // in scope 4 at $DIR/const_debuginfo.rs:+4:9: +4:12
let _9: &str; // in scope 4 at $DIR/const_debuginfo.rs:+6:9: +6:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 5 {
bless mir opt tests
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- debug s => _9; // in scope 5 at $DIR/const_debuginfo.rs:+6:9: +6:10
+ debug s => const "hello, world!"; // in scope 5 at $DIR/const_debuginfo.rs:+6:9: +6:10
Simplify construction of replacement map.
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let _14: bool; // in scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
let _15: bool; // in scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
let _16: u32; // in scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 6 {
Simplify construction of replacement map.
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debug f => (bool, bool, u32){ .0 => _14, .1 => _15, .2 => _16, }; // in scope 6 at $DIR/const_debuginfo.rs:+8:9: +8:10
let _10: std::option::Option<u16>; // in scope 6 at $DIR/const_debuginfo.rs:+10:9: +10:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 7 {
Simplify construction of replacement map.
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debug o => _10; // in scope 7 at $DIR/const_debuginfo.rs:+10:9: +10:10
let _17: u32; // in scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _18: u32; // in scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 8 {
Simplify construction of replacement map.
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debug p => Point{ .0 => _17, .1 => _18, }; // in scope 8 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _11: u32; // in scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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scope 9 {
Simplify construction of replacement map.
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- debug a => _11; // in scope 9 at $DIR/const_debuginfo.rs:+13:9: +13:10
bless mir opt tests
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+ debug a => const 64_u32; // in scope 9 at $DIR/const_debuginfo.rs:+13:9: +13:10
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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}
}
}
}
}
}
}
}
}
bb0: {
bless mir opt tests
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_1 = const 1_u8; // scope 0 at $DIR/const_debuginfo.rs:+1:13: +1:16
_2 = const 2_u8; // scope 1 at $DIR/const_debuginfo.rs:+2:13: +2:16
_3 = const 3_u8; // scope 2 at $DIR/const_debuginfo.rs:+3:13: +3:16
StorageLive(_4); // scope 3 at $DIR/const_debuginfo.rs:+4:9: +4:12
StorageLive(_5); // scope 3 at $DIR/const_debuginfo.rs:+4:15: +4:20
_5 = const 3_u8; // scope 3 at $DIR/const_debuginfo.rs:+4:15: +4:20
_4 = const 6_u8; // scope 3 at $DIR/const_debuginfo.rs:+4:15: +4:24
StorageDead(_5); // scope 3 at $DIR/const_debuginfo.rs:+4:23: +4:24
StorageLive(_9); // scope 4 at $DIR/const_debuginfo.rs:+6:9: +6:10
_9 = const "hello, world!"; // scope 4 at $DIR/const_debuginfo.rs:+6:13: +6:28
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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// mir::Constant
// + span: $DIR/const_debuginfo.rs:14:13: 14:28
bless mir-opt
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// + literal: Const { ty: &str, val: Value(Slice(..)) }
Simplify construction of replacement map.
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StorageLive(_14); // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
StorageLive(_15); // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
StorageLive(_16); // scope 5 at $DIR/const_debuginfo.rs:+8:9: +8:10
_14 = const true; // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
_15 = const false; // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
_16 = const 123_u32; // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
StorageLive(_10); // scope 6 at $DIR/const_debuginfo.rs:+10:9: +10:10
_10 = Option::<u16>::Some(const 99_u16); // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
_17 = const 32_u32; // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
_18 = const 32_u32; // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
StorageLive(_11); // scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
_11 = const 64_u32; // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:22
StorageDead(_11); // scope 8 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_10); // scope 6 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_14); // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_15); // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_16); // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
bless mir opt tests
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StorageDead(_9); // scope 4 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_4); // scope 3 at $DIR/const_debuginfo.rs:+14:1: +14:2
return; // scope 0 at $DIR/const_debuginfo.rs:+14:2: +14:2
[mir-opt] Allow debuginfo to be generated for a constant or a Place Prior to this commit, debuginfo was always generated by mapping a name to a Place. This has the side-effect that `SimplifyLocals` cannot remove locals that are only used for debuginfo because their other uses have been const-propagated. To allow these locals to be removed, we now allow debuginfo to point to a constant value. The `ConstProp` pass detects when debuginfo points to a local with a known constant value and replaces it with the value. This allows the later `SimplifyLocals` pass to remove the local.
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}
}
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