Auto merge of #70297 - nnethercote:clean-up-debugging-options, r=michaelwoerister

Clean up debugging options

I found various sub-optimal things when I was looking at option handling.

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

@@ -1,9 +1,9 @@
 // ignore-tidy-linelength
 
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
 // We specify opt-level=0 because `drop_in_place` is `Internal` when optimizing
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/extern-drop-glue
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/extern-drop-glue
 // compile-flags:-Zinline-in-all-cgus -Copt-level=0
 
 #![allow(dead_code)]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=eager -Zincremental=tmp/partitioning-tests/extern-generic -Zshare-generics=y
+// compile-flags:-Zprint-mono-items=eager -Cincremental=tmp/partitioning-tests/extern-generic -Zshare-generics=y
 
 #![allow(dead_code)]
 #![crate_type="lib"]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/inlining-from-extern-crate
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/inlining-from-extern-crate
 // compile-flags:-Zinline-in-all-cgus
 
 #![crate_type="lib"]

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

@@ -1,8 +1,8 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
 // We specify opt-level=0 because `drop_in_place` is `Internal` when optimizing
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/local-drop-glue
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/local-drop-glue
 // compile-flags:-Zinline-in-all-cgus -Copt-level=0
 
 #![allow(dead_code)]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=eager -Zincremental=tmp/partitioning-tests/local-generic
+// compile-flags:-Zprint-mono-items=eager -Cincremental=tmp/partitioning-tests/local-generic
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/local-inlining-but-not-all.rs

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/local-inlining-but-not-all
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/local-inlining-but-not-all
 // compile-flags:-Zinline-in-all-cgus=no
 
 #![allow(dead_code)]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/local-inlining
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/local-inlining
 // compile-flags:-Zinline-in-all-cgus
 
 #![allow(dead_code)]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/local-transitive-inlining
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/local-transitive-inlining
 // compile-flags:-Zinline-in-all-cgus
 
 #![allow(dead_code)]

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

@@ -4,9 +4,9 @@
 // ignore-test
 
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/methods-are-with-self-type
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/methods-are-with-self-type
 
 #![allow(dead_code)]
 #![feature(start)]

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

@@ -1,7 +1,7 @@
 // ignore-tidy-linelength
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=eager -Zincremental=tmp/partitioning-tests/regular-modules
+// compile-flags:-Zprint-mono-items=eager -Cincremental=tmp/partitioning-tests/regular-modules
 
 #![allow(dead_code)]
 #![crate_type="lib"]

src/test/codegen-units/partitioning/shared-generics.rs

@@ -2,7 +2,7 @@
 // no-prefer-dynamic
 // NOTE: We always compile this test with -Copt-level=0 because higher opt-levels
 //       prevent drop-glue from participating in share-generics.
-// compile-flags:-Zprint-mono-items=eager -Zshare-generics=yes -Zincremental=tmp/partitioning-tests/shared-generics-exe -Copt-level=0
+// compile-flags:-Zprint-mono-items=eager -Zshare-generics=yes -Cincremental=tmp/partitioning-tests/shared-generics-exe -Copt-level=0
 
 #![crate_type="rlib"]
 

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

@@ -1,6 +1,6 @@
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/statics
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/statics
 
 #![crate_type="rlib"]
 

src/test/codegen-units/partitioning/vtable-through-const.rs

@@ -1,8 +1,8 @@
 // ignore-tidy-linelength
 
-// We specify -Z incremental here because we want to test the partitioning for
+// We specify -C incremental here because we want to test the partitioning for
 // incremental compilation
-// compile-flags:-Zprint-mono-items=lazy -Zincremental=tmp/partitioning-tests/vtable-through-const
+// compile-flags:-Zprint-mono-items=lazy -Cincremental=tmp/partitioning-tests/vtable-through-const
 // compile-flags:-Zinline-in-all-cgus
 
 // This test case makes sure, that references made through constants are