Auto merge of #33317 - michaelwoerister:fix-partitioning-tests-race, r=alexcrichton

Fix a race condition caused by concurrently executed codegen unit tests.

This hopefully fixes issue #33315.

This short-term solution just makes sure that every test uses its own directory so they can't get into conflict with each other.

As a more long-term solution, I'd probably prefer to make the partitioning scheme specifiable via `-Ccodegen-units` (e.g. like `-Ccodegen-units=per-module`) so that we don't have to rely on `-Zincremental` in these test cases.

r? @alexcrichton

src/test/codegen-units/partitioning/extern-drop-glue.rs

@@ -9,7 +9,10 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/extern-drop-glue
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/extern-generic.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=eager -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/extern-generic
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/inlining-from-extern-crate.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/inlining-from-extern-crate
 
 #![crate_type="lib"]
 

src/test/codegen-units/partitioning/local-drop-glue.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-drop-glue
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/local-generic.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=eager -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/local-generic
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/local-inlining.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-inlining
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/local-transitive-inlining.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-transitive-inlining
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/methods-are-with-self-type.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/methods-are-with-self-type
 
 #![allow(dead_code)]
 

src/test/codegen-units/partitioning/regular-modules.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=eager -Z incremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/regular-modules
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/statics.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 // ignore-tidy-linelength
-// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp
+// We specify -Z incremental here because we want to test the partitioning for
+// incremental compilation
+// compile-flags:-Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/statics
 
 #![crate_type="lib"]