Rollup merge of rust-lang#101428 - JakobDegen:build-tests, r=oli-obk

Add mir building test directory

The first commit renames `mir-map.0` mir dumps to `built.after` dumps. I am happy to drop this commit if someone can explain the origin of the name.

The second commit moves a bunch of mir building tests into their own directory. I did my best to make sure that all of these tests are actually testing mir building, and not just incidentally using `built.after`

r? ``@oli-obk``

Author: notriddle

compiler/rustc_mir_transform/src/lib.rs

@@ -288,7 +288,7 @@ fn mir_const<'tcx>(
 
     let mut body = tcx.mir_built(def).steal();
 
-    rustc_middle::mir::dump_mir(tcx, None, "mir_map", &0, &body, |_, _| Ok(()));
+    pass_manager::dump_mir_for_phase_change(tcx, &body);
 
     pm::run_passes(
         tcx,

compiler/rustc_mir_transform/src/shim.rs

@@ -845,7 +845,7 @@ pub fn build_adt_ctor(tcx: TyCtxt<'_>, ctor_id: DefId) -> Body<'_> {
         span,
     );
 
-    rustc_middle::mir::dump_mir(tcx, None, "mir_map", &0, &body, |_, _| Ok(()));
+    crate::pass_manager::dump_mir_for_phase_change(tcx, &body);
 
     body
 }

src/test/mir-opt/enum_cast.bar.mir_map.0.mir renamed to src/test/mir-opt/building/enum_cast.bar.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `bar` 0 mir_map
+// MIR for `bar` after built
 
 fn bar(_1: Bar) -> usize {
     debug bar => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/enum_cast.boo.mir_map.0.mir renamed to src/test/mir-opt/building/enum_cast.boo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `boo` 0 mir_map
+// MIR for `boo` after built
 
 fn boo(_1: Boo) -> usize {
     debug boo => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/enum_cast.droppy.mir_map.0.mir renamed to src/test/mir-opt/building/enum_cast.droppy.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `droppy` 0 mir_map
+// MIR for `droppy` after built
 
 fn droppy() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/enum_cast.rs:+0:13: +0:13

src/test/mir-opt/enum_cast.foo.mir_map.0.mir renamed to src/test/mir-opt/building/enum_cast.foo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `foo` 0 mir_map
+// MIR for `foo` after built
 
 fn foo(_1: Foo) -> usize {
     debug foo => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/enum_cast.rs renamed to src/test/mir-opt/building/enum_cast.rs

@@ -1,6 +1,6 @@
-// EMIT_MIR enum_cast.foo.mir_map.0.mir
-// EMIT_MIR enum_cast.bar.mir_map.0.mir
-// EMIT_MIR enum_cast.boo.mir_map.0.mir
+// EMIT_MIR enum_cast.foo.built.after.mir
+// EMIT_MIR enum_cast.bar.built.after.mir
+// EMIT_MIR enum_cast.boo.built.after.mir
 
 enum Foo {
     A
@@ -27,7 +27,7 @@ fn boo(boo: Boo) -> usize {
     boo as usize
 }
 
-// EMIT_MIR enum_cast.droppy.mir_map.0.mir
+// EMIT_MIR enum_cast.droppy.built.after.mir
 enum Droppy {
     A, B, C
 }

src/test/mir-opt/issue-101867.rs renamed to src/test/mir-opt/building/issue-101867.rs

@@ -1,4 +1,4 @@
-// EMIT_MIR issue_101867.main.mir_map.0.mir
+// EMIT_MIR issue_101867.main.built.after.mir
 fn main() {
     let x: Option<u8> = Some(1);
     let Some(y) = x else {

src/test/mir-opt/issue-49232.rs renamed to src/test/mir-opt/building/issue-49232.rs

@@ -1,7 +1,7 @@
 // We must mark a variable whose initialization fails due to an
 // abort statement as StorageDead.
 
-// EMIT_MIR issue_49232.main.mir_map.0.mir
+// EMIT_MIR issue_49232.main.built.after.mir
 fn main() {
     loop {
         let beacon = {

src/test/mir-opt/issue_101867.main.mir_map.0.mir renamed to src/test/mir-opt/building/issue_101867.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 | User Type Annotations
 | 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<u8>) }, span: $DIR/issue-101867.rs:3:12: 3:22, inferred_ty: std::option::Option<u8>