rust/tests/mir-opt/lower_intrinsics.size_of.LowerIntrinsics.diff

- // MIR for `size_of` before LowerIntrinsics
+ // MIR for `size_of` after LowerIntrinsics
  
  fn size_of() -> usize {
      let mut _0: usize;                   // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:24: +0:29
  
      bb0: {
-         _0 = std::intrinsics::size_of::<T>() -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37
-                                          // mir::Constant
-                                          // + span: $DIR/lower_intrinsics.rs:16:5: 16:35
-                                          // + literal: Const { ty: extern "rust-intrinsic" fn() -> usize {std::intrinsics::size_of::<T>}, val: Value(<ZST>) }
+         _0 = SizeOf(T);                  // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37
+         goto -> bb1;                     // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37
      }
  
      bb1: {
          return;                          // scope 0 at $DIR/lower_intrinsics.rs:+2:2: +2:2
      }
  }
Lower intrinsics calls: forget, size_of, unreachable, wrapping_* This allows constant propagation to evaluate `size_of` and `wrapping_*`, and unreachable propagation to propagate a call to `unreachable`. The lowering is performed as a MIR optimization, rather than during MIR building to preserve the special status of intrinsics with respect to unsafety checks and promotion. 2020-11-14 00:00:00 +00:00			- // MIR for `size_of` before LowerIntrinsics
			+ // MIR for `size_of` after LowerIntrinsics

			`fn size_of() -> usize {`
bless mir opt tests 2022-07-27 18:47:42 +00:00			`let mut _0: usize; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:24: +0:29`
Lower intrinsics calls: forget, size_of, unreachable, wrapping_* This allows constant propagation to evaluate `size_of` and `wrapping_*`, and unreachable propagation to propagate a call to `unreachable`. The lowering is performed as a MIR optimization, rather than during MIR building to preserve the special status of intrinsics with respect to unsafety checks and promotion. 2020-11-14 00:00:00 +00:00
			`bb0: {`
bless mir opt tests 2022-07-27 18:47:42 +00:00			`- _0 = std::intrinsics::size_of::<T>() -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37`
Lower intrinsics calls: forget, size_of, unreachable, wrapping_* This allows constant propagation to evaluate `size_of` and `wrapping_*`, and unreachable propagation to propagate a call to `unreachable`. The lowering is performed as a MIR optimization, rather than during MIR building to preserve the special status of intrinsics with respect to unsafety checks and promotion. 2020-11-14 00:00:00 +00:00			`- // mir::Constant`
Simplify MIR opt tests This commit removes many cases of MIR opt tests emitting `.diff`s for more than one pass. These tests cannot be `unit-test`s, and so they are easy to break, and they also provide little value due to having excessively strong opinions over how a piece of code should be optimized. Where reasonable, we instead add separate test files that only emit the `PreCodegen.after` MIR for code where we want to track what the result of the net result of the optimization pipeline's output is. 2022-08-21 04:47:53 +00:00			`- // + span: $DIR/lower_intrinsics.rs:16:5: 16:35`
tweak names and output and bless 2022-07-06 14:14:46 +00:00			`- // + literal: Const { ty: extern "rust-intrinsic" fn() -> usize {std::intrinsics::size_of::<T>}, val: Value(<ZST>) }`
bless mir opt tests 2022-07-27 18:47:42 +00:00			`+ _0 = SizeOf(T); // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37`
			`+ goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:37`
Lower intrinsics calls: forget, size_of, unreachable, wrapping_* This allows constant propagation to evaluate `size_of` and `wrapping_*`, and unreachable propagation to propagate a call to `unreachable`. The lowering is performed as a MIR optimization, rather than during MIR building to preserve the special status of intrinsics with respect to unsafety checks and promotion. 2020-11-14 00:00:00 +00:00			`}`

			`bb1: {`
bless mir opt tests 2022-07-27 18:47:42 +00:00			`return; // scope 0 at $DIR/lower_intrinsics.rs:+2:2: +2:2`
Lower intrinsics calls: forget, size_of, unreachable, wrapping_* This allows constant propagation to evaluate `size_of` and `wrapping_*`, and unreachable propagation to propagate a call to `unreachable`. The lowering is performed as a MIR optimization, rather than during MIR building to preserve the special status of intrinsics with respect to unsafety checks and promotion. 2020-11-14 00:00:00 +00:00			`}`
			`}`