Auto merge of #112346 - saethlin:no-comment, r=oli-obk

Remove comments from mir-opt MIR dumps

See https://rust-lang.zulipchat.com/#narrow/stream/189540-t-compiler.2Fwg-mir-opt/topic/Line.20numbers.20in.20mir-opt.20tests/near/363849874

In https://github.com/rust-lang/rust/pull/99780 there is mention that "there has been a zulip conversation about disabling line numbers with mixed opinions" which to me means that some people opposed this. I can't find the referenced conversation so... here we go.

The current situation is quite chaotic. It's not hard to find MIR diffs which contain

* Absolute line numbers
* Relative line numbers
* Substituted line numbers (LL)
For example: https://github.com/rust-lang/rust/blob/408bbd040613f6776e0a7d05d582c81f4ddc189a/tests/mir-opt/inline/inline_shims.drop.Inline.diff#L10-L17

And sometimes adding a comment at the top of a mir-opt test generates a diff in the test because a line number changed: https://github.com/rust-lang/rust/pull/98112/files#diff-b8cf4bcce95078e6a3faf075e9abf6864872fb28a64d95c04f04513b9e3bbd81

And irrelevant changes to the standard library can generate diffs in mir-opt tests: https://github.com/rust-lang/rust/pull/110694/files#diff-bf96b0e7c67b8b272814536888fd9428c314991e155beae1f0a2a67f0ac47b2c
https://github.com/rust-lang/rust/commit/769886cc35ce08b76839f4cf72b8af1161c432e1

I think we should, specifically in mir-opt tests, completely remove the comments, or insert placeholders for all line and column numbers.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 7c6668b1c5d..8c744d5d3c4 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -2044,7 +2044,6 @@ impl<'test> TestCx<'test> {
                     &zdump_arg,
                     "-Zvalidate-mir",
                     "-Zdump-mir-exclude-pass-number",
-                    "-Zmir-pretty-relative-line-numbers=yes",
                 ]);
                 if let Some(pass) = &self.props.mir_unit_test {
                     rustc.args(&["-Zmir-opt-level=0", &format!("-Zmir-enable-passes=+{}", pass)]);