Dereference immutable borrows in GVN.
This commit is contained in:
Camille GILLOT
parent
73db12a223
commit
9b846d4637
@ -724,6 +724,14 @@ fn simplify_place_value(
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// Invariant: `value` holds the value up-to the `index`th projection excluded.
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let mut value = self.locals[place.local]?;
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for (index, proj) in place.projection.iter().enumerate() {
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if let Value::Projection(pointer, ProjectionElem::Deref) = *self.get(value)
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&& let Value::Address { place: mut pointee, kind, .. } = *self.get(pointer)
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&& let AddressKind::Ref(BorrowKind::Shared) = kind
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&& let Some(v) = self.simplify_place_value(&mut pointee, location)
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{
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value = v;
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place_ref = pointee.project_deeper(&place.projection[index..], self.tcx).as_ref();
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}
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if let Some(local) = self.try_as_local(value, location) {
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// Both `local` and `Place { local: place.local, projection: projection[..index] }`
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// hold the same value. Therefore, following place holds the value in the original
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@ -735,6 +743,14 @@ fn simplify_place_value(
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value = self.project(base, value, proj)?;
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}
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if let Value::Projection(pointer, ProjectionElem::Deref) = *self.get(value)
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&& let Value::Address { place: mut pointee, kind, .. } = *self.get(pointer)
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&& let AddressKind::Ref(BorrowKind::Shared) = kind
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&& let Some(v) = self.simplify_place_value(&mut pointee, location)
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{
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value = v;
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place_ref = pointee.project_deeper(&[], self.tcx).as_ref();
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}
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if let Some(new_local) = self.try_as_local(value, location) {
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place_ref = PlaceRef { local: new_local, projection: &[] };
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}
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@ -1,12 +1,12 @@
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Function name: issue_83601::main
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Raw bytes (21): 0x[01, 01, 01, 05, 09, 03, 01, 06, 01, 02, 1c, 05, 03, 09, 01, 1c, 02, 02, 05, 03, 02]
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Raw bytes (21): 0x[01, 01, 01, 05, 00, 03, 01, 06, 01, 02, 1c, 05, 03, 09, 01, 1c, 02, 02, 05, 03, 02]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 1
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- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
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- expression 0 operands: lhs = Counter(1), rhs = Zero
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Number of file 0 mappings: 3
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- Code(Counter(0)) at (prev + 6, 1) to (start + 2, 28)
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- Code(Counter(1)) at (prev + 3, 9) to (start + 1, 28)
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- Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 3, 2)
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= (c1 - c2)
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= (c1 - Zero)
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@ -77,22 +77,22 @@ Number of file 0 mappings: 1
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- Code(Counter(0)) at (prev + 167, 9) to (start + 2, 10)
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Function name: issue_84561::test3
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Raw bytes (436): 0x[01, 01, 41, 05, 09, 0d, 00, 15, 19, 12, 00, 15, 19, 21, 00, 1e, 00, 21, 00, 31, 00, 3d, 41, 2e, 45, 3d, 41, 42, 49, 45, 00, 3f, 51, 42, 49, 45, 00, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 92, 01, 55, 51, 00, 8f, 01, 5d, 92, 01, 55, 51, 00, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 82, 01, 65, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 00, fe, 01, 82, 02, 00, 69, 6d, 69, 6d, 82, 02, 00, 69, 6d, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, ee, 01, 00, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 33, 01, 08, 01, 03, 1c, 05, 04, 09, 01, 1c, 02, 02, 05, 04, 1f, 0d, 05, 05, 00, 1f, 06, 01, 05, 00, 1f, 15, 01, 09, 01, 1c, 12, 02, 05, 00, 1f, 0e, 01, 05, 00, 0f, 00, 00, 20, 00, 30, 21, 01, 05, 03, 0f, 00, 03, 20, 00, 30, 00, 00, 33, 00, 41, 00, 00, 4b, 00, 5a, 1e, 01, 05, 00, 0f, 00, 05, 09, 03, 10, 00, 05, 0d, 00, 1b, 00, 02, 0d, 00, 1c, 1a, 04, 09, 05, 06, 31, 06, 05, 03, 06, 22, 04, 05, 03, 06, 3d, 04, 09, 04, 06, 2e, 05, 08, 00, 0f, 45, 01, 09, 03, 0a, 2a, 05, 09, 03, 0a, 3f, 05, 08, 00, 0f, 51, 01, 09, 00, 13, 00, 03, 0d, 00, 1d, 3a, 03, 09, 00, 13, 00, 03, 0d, 00, 1d, 87, 01, 03, 05, 00, 0f, 8f, 01, 01, 0c, 00, 13, 5d, 01, 0d, 00, 13, 8a, 01, 02, 0d, 00, 13, 82, 01, 04, 05, 02, 13, 65, 03, 0d, 00, 13, 7e, 02, 0d, 00, 13, f3, 01, 03, 05, 00, 0f, 69, 01, 0c, 00, 13, 6d, 01, 0d, 03, 0e, 75, 04, 0d, 00, 13, fb, 01, 02, 0d, 00, 17, 82, 02, 01, 14, 00, 1b, 00, 01, 15, 00, 1b, fe, 01, 02, 15, 00, 1b, f6, 01, 04, 0d, 00, 13, 7d, 03, 09, 00, 19, ee, 01, 02, 05, 00, 0f, ea, 01, 03, 09, 00, 22, 00, 02, 05, 00, 0f, 00, 03, 09, 00, 2c, 00, 02, 01, 00, 02]
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Raw bytes (436): 0x[01, 01, 41, 05, 00, 0d, 00, 15, 00, 12, 00, 15, 00, 21, 00, 1e, 00, 21, 00, 31, 00, 3d, 00, 2e, 45, 3d, 00, 42, 49, 45, 00, 3f, 51, 42, 49, 45, 00, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 92, 01, 55, 51, 00, 8f, 01, 5d, 92, 01, 55, 51, 00, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 82, 01, 65, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 00, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 00, fe, 01, 82, 02, 00, 69, 6d, 69, 6d, 82, 02, 00, 69, 6d, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, ee, 01, 00, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 00, fe, 01, 82, 02, 00, 69, 6d, 33, 01, 08, 01, 03, 1c, 05, 04, 09, 01, 1c, 02, 02, 05, 04, 1f, 0d, 05, 05, 00, 1f, 06, 01, 05, 00, 1f, 15, 01, 09, 01, 1c, 12, 02, 05, 00, 1f, 0e, 01, 05, 00, 0f, 00, 00, 20, 00, 30, 21, 01, 05, 03, 0f, 00, 03, 20, 00, 30, 00, 00, 33, 00, 41, 00, 00, 4b, 00, 5a, 1e, 01, 05, 00, 0f, 00, 05, 09, 03, 10, 00, 05, 0d, 00, 1b, 00, 02, 0d, 00, 1c, 1a, 04, 09, 05, 06, 31, 06, 05, 03, 06, 22, 04, 05, 03, 06, 3d, 04, 09, 04, 06, 2e, 05, 08, 00, 0f, 45, 01, 09, 03, 0a, 2a, 05, 09, 03, 0a, 3f, 05, 08, 00, 0f, 51, 01, 09, 00, 13, 00, 03, 0d, 00, 1d, 3a, 03, 09, 00, 13, 00, 03, 0d, 00, 1d, 87, 01, 03, 05, 00, 0f, 8f, 01, 01, 0c, 00, 13, 5d, 01, 0d, 00, 13, 8a, 01, 02, 0d, 00, 13, 82, 01, 04, 05, 02, 13, 65, 03, 0d, 00, 13, 7e, 02, 0d, 00, 13, f3, 01, 03, 05, 00, 0f, 69, 01, 0c, 00, 13, 6d, 01, 0d, 03, 0e, 75, 04, 0d, 00, 13, fb, 01, 02, 0d, 00, 17, 82, 02, 01, 14, 00, 1b, 00, 01, 15, 00, 1b, fe, 01, 02, 15, 00, 1b, f6, 01, 04, 0d, 00, 13, 7d, 03, 09, 00, 19, ee, 01, 02, 05, 00, 0f, ea, 01, 03, 09, 00, 22, 00, 02, 05, 00, 0f, 00, 03, 09, 00, 2c, 00, 02, 01, 00, 02]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 65
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- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
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- expression 0 operands: lhs = Counter(1), rhs = Zero
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- expression 1 operands: lhs = Counter(3), rhs = Zero
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- expression 2 operands: lhs = Counter(5), rhs = Counter(6)
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- expression 2 operands: lhs = Counter(5), rhs = Zero
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- expression 3 operands: lhs = Expression(4, Sub), rhs = Zero
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- expression 4 operands: lhs = Counter(5), rhs = Counter(6)
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- expression 4 operands: lhs = Counter(5), rhs = Zero
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- expression 5 operands: lhs = Counter(8), rhs = Zero
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- expression 6 operands: lhs = Expression(7, Sub), rhs = Zero
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- expression 7 operands: lhs = Counter(8), rhs = Zero
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- expression 8 operands: lhs = Counter(12), rhs = Zero
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- expression 9 operands: lhs = Counter(15), rhs = Counter(16)
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- expression 9 operands: lhs = Counter(15), rhs = Zero
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- expression 10 operands: lhs = Expression(11, Sub), rhs = Counter(17)
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- expression 11 operands: lhs = Counter(15), rhs = Counter(16)
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- expression 11 operands: lhs = Counter(15), rhs = Zero
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- expression 12 operands: lhs = Expression(16, Sub), rhs = Counter(18)
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- expression 13 operands: lhs = Counter(17), rhs = Zero
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- expression 14 operands: lhs = Expression(15, Add), rhs = Counter(20)
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@ -150,15 +150,15 @@ Number of file 0 mappings: 51
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- Code(Counter(0)) at (prev + 8, 1) to (start + 3, 28)
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- Code(Counter(1)) at (prev + 4, 9) to (start + 1, 28)
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- Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 4, 31)
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= (c1 - c2)
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= (c1 - Zero)
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- Code(Counter(3)) at (prev + 5, 5) to (start + 0, 31)
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- Code(Expression(1, Sub)) at (prev + 1, 5) to (start + 0, 31)
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= (c3 - Zero)
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- Code(Counter(5)) at (prev + 1, 9) to (start + 1, 28)
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- Code(Expression(4, Sub)) at (prev + 2, 5) to (start + 0, 31)
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= (c5 - c6)
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= (c5 - Zero)
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- Code(Expression(3, Sub)) at (prev + 1, 5) to (start + 0, 15)
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= ((c5 - c6) - Zero)
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= ((c5 - Zero) - Zero)
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- Code(Zero) at (prev + 0, 32) to (start + 0, 48)
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- Code(Counter(8)) at (prev + 1, 5) to (start + 3, 15)
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- Code(Zero) at (prev + 3, 32) to (start + 0, 48)
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@ -176,10 +176,10 @@ Number of file 0 mappings: 51
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= (c12 - Zero)
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- Code(Counter(15)) at (prev + 4, 9) to (start + 4, 6)
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- Code(Expression(11, Sub)) at (prev + 5, 8) to (start + 0, 15)
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= (c15 - c16)
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= (c15 - Zero)
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- Code(Counter(17)) at (prev + 1, 9) to (start + 3, 10)
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- Code(Expression(10, Sub)) at (prev + 5, 9) to (start + 3, 10)
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= ((c15 - c16) - c17)
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= ((c15 - Zero) - c17)
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- Code(Expression(15, Add)) at (prev + 5, 8) to (start + 0, 15)
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= ((c17 - Zero) + c18)
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- Code(Counter(20)) at (prev + 1, 9) to (start + 0, 19)
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@ -18,7 +18,8 @@
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}
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bb2: {
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_0 = opaque::<u32>((*_3)) -> [return: bb3, unwind unreachable];
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- _0 = opaque::<u32>((*_3)) -> [return: bb3, unwind unreachable];
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+ _0 = opaque::<u32>(_1) -> [return: bb3, unwind unreachable];
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}
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bb3: {
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@ -18,7 +18,8 @@
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}
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bb2: {
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_0 = opaque::<u32>((*_3)) -> [return: bb3, unwind continue];
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- _0 = opaque::<u32>((*_3)) -> [return: bb3, unwind continue];
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+ _0 = opaque::<u32>(_1) -> [return: bb3, unwind continue];
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}
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bb3: {
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@ -730,7 +730,7 @@ fn borrowed(x: u32) {
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// CHECK: bb1: {
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// CHECK-NEXT: _0 = opaque::<u32>(_1)
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// CHECK: bb2: {
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// CHECK-NEXT: _0 = opaque::<u32>((*_3))
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// CHECK-NEXT: _0 = opaque::<u32>(_1)
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mir!(
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{
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let a = x;
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@ -111,8 +111,9 @@
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StorageLive(_7);
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StorageLive(_8);
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- StorageLive(_9);
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- StorageLive(_10);
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+ nop;
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+ nop;
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StorageLive(_10);
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StorageLive(_11);
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_11 = &(*_1);
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_10 = core::str::<impl str>::as_ptr(move _11) -> [return: bb3, unwind unreachable];
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@ -122,8 +123,9 @@
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StorageDead(_11);
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_9 = &_10;
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- StorageLive(_12);
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- StorageLive(_13);
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+ nop;
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+ nop;
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StorageLive(_13);
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StorageLive(_14);
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- _14 = &(*_4);
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+ _14 = &(*_1);
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@ -148,11 +150,12 @@
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StorageLive(_17);
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StorageLive(_18);
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- _18 = (*_15);
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+ _18 = (*_9);
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+ _18 = _10;
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StorageLive(_19);
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- _19 = (*_16);
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+ _19 = (*_12);
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_17 = Eq(move _18, move _19);
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- _17 = Eq(move _18, move _19);
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+ _19 = _13;
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+ _17 = Eq(_10, _13);
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switchInt(move _17) -> [0: bb6, otherwise: bb5];
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}
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@ -163,8 +166,10 @@
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StorageDead(_17);
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StorageDead(_16);
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StorageDead(_15);
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StorageDead(_13);
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StorageDead(_10);
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- StorageDead(_13);
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- StorageDead(_10);
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+ nop;
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+ nop;
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StorageDead(_8);
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StorageDead(_7);
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- StorageLive(_29);
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@ -213,8 +218,9 @@
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StorageLive(_33);
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StorageLive(_34);
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- StorageLive(_35);
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- StorageLive(_36);
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+ nop;
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+ nop;
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StorageLive(_36);
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StorageLive(_37);
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_37 = &(*_1);
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_36 = core::str::<impl str>::as_ptr(move _37) -> [return: bb8, unwind unreachable];
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@ -224,8 +230,9 @@
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StorageDead(_37);
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_35 = &_36;
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- StorageLive(_38);
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- StorageLive(_39);
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+ nop;
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+ nop;
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StorageLive(_39);
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StorageLive(_40);
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_40 = &(*_29);
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_39 = core::slice::<impl [u8]>::as_ptr(move _40) -> [return: bb9, unwind unreachable];
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@ -249,11 +256,12 @@
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StorageLive(_43);
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StorageLive(_44);
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- _44 = (*_41);
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+ _44 = (*_35);
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+ _44 = _36;
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StorageLive(_45);
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- _45 = (*_42);
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+ _45 = (*_38);
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_43 = Eq(move _44, move _45);
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- _43 = Eq(move _44, move _45);
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+ _45 = _39;
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+ _43 = Eq(_36, _39);
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switchInt(move _43) -> [0: bb11, otherwise: bb10];
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}
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@ -264,8 +272,10 @@
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StorageDead(_43);
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StorageDead(_42);
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StorageDead(_41);
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StorageDead(_39);
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StorageDead(_36);
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- StorageDead(_39);
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- StorageDead(_36);
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+ nop;
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+ nop;
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StorageDead(_34);
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StorageDead(_33);
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_0 = const ();
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@ -111,8 +111,9 @@
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StorageLive(_7);
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StorageLive(_8);
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- StorageLive(_9);
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- StorageLive(_10);
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+ nop;
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+ nop;
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StorageLive(_10);
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StorageLive(_11);
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_11 = &(*_1);
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_10 = core::str::<impl str>::as_ptr(move _11) -> [return: bb3, unwind continue];
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@ -122,8 +123,9 @@
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StorageDead(_11);
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_9 = &_10;
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- StorageLive(_12);
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- StorageLive(_13);
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+ nop;
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+ nop;
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StorageLive(_13);
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StorageLive(_14);
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- _14 = &(*_4);
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+ _14 = &(*_1);
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@ -148,11 +150,12 @@
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StorageLive(_17);
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StorageLive(_18);
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- _18 = (*_15);
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+ _18 = (*_9);
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+ _18 = _10;
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StorageLive(_19);
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- _19 = (*_16);
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+ _19 = (*_12);
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_17 = Eq(move _18, move _19);
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- _17 = Eq(move _18, move _19);
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+ _19 = _13;
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+ _17 = Eq(_10, _13);
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switchInt(move _17) -> [0: bb6, otherwise: bb5];
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}
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@ -163,8 +166,10 @@
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StorageDead(_17);
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StorageDead(_16);
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StorageDead(_15);
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StorageDead(_13);
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StorageDead(_10);
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- StorageDead(_13);
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- StorageDead(_10);
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+ nop;
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+ nop;
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StorageDead(_8);
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StorageDead(_7);
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- StorageLive(_29);
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@ -213,8 +218,9 @@
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StorageLive(_33);
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StorageLive(_34);
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- StorageLive(_35);
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- StorageLive(_36);
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+ nop;
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+ nop;
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StorageLive(_36);
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StorageLive(_37);
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_37 = &(*_1);
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_36 = core::str::<impl str>::as_ptr(move _37) -> [return: bb8, unwind continue];
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@ -224,8 +230,9 @@
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StorageDead(_37);
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_35 = &_36;
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- StorageLive(_38);
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- StorageLive(_39);
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+ nop;
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+ nop;
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StorageLive(_39);
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StorageLive(_40);
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_40 = &(*_29);
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_39 = core::slice::<impl [u8]>::as_ptr(move _40) -> [return: bb9, unwind continue];
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@ -249,11 +256,12 @@
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StorageLive(_43);
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StorageLive(_44);
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- _44 = (*_41);
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+ _44 = (*_35);
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+ _44 = _36;
|
||||
StorageLive(_45);
|
||||
- _45 = (*_42);
|
||||
+ _45 = (*_38);
|
||||
_43 = Eq(move _44, move _45);
|
||||
- _43 = Eq(move _44, move _45);
|
||||
+ _45 = _39;
|
||||
+ _43 = Eq(_36, _39);
|
||||
switchInt(move _43) -> [0: bb11, otherwise: bb10];
|
||||
}
|
||||
|
||||
@ -264,8 +272,10 @@
|
||||
StorageDead(_43);
|
||||
StorageDead(_42);
|
||||
StorageDead(_41);
|
||||
StorageDead(_39);
|
||||
StorageDead(_36);
|
||||
- StorageDead(_39);
|
||||
- StorageDead(_36);
|
||||
+ nop;
|
||||
+ nop;
|
||||
StorageDead(_34);
|
||||
StorageDead(_33);
|
||||
_0 = const ();
|
||||
|
||||
@ -17,7 +17,8 @@
|
||||
StorageLive(_3);
|
||||
_5 = const f::promoted[0];
|
||||
_3 = &(*_5);
|
||||
_2 = ((*_3).1: E);
|
||||
- _2 = ((*_3).1: E);
|
||||
+ _2 = ((*_5).1: E);
|
||||
StorageLive(_1);
|
||||
- _1 = ((_2 as A).1: u32);
|
||||
+ _1 = const 0_u32;
|
||||
|
||||
@ -17,7 +17,8 @@
|
||||
StorageLive(_3);
|
||||
_5 = const f::promoted[0];
|
||||
_3 = &(*_5);
|
||||
_2 = ((*_3).1: E);
|
||||
- _2 = ((*_3).1: E);
|
||||
+ _2 = ((*_5).1: E);
|
||||
StorageLive(_1);
|
||||
- _1 = ((_2 as A).1: u32);
|
||||
+ _1 = const 0_u32;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user