Rollup merge of #63621 - jgalenson:dndebug, r=alexcrichton

Modify librustc_llvm to pass -DNDEBUG while compiling.

Currently, librustc_llvm builds are not reproducible because the LLVM files it compiles use the debug version of llvm_unreachable, which uses __FILE__.  To fix this, we propagate NDEBUG from bootstrap if applicable and use it when compiling librustc_llvm.

r? @alexcrichton

1 files changed, 3 insertions, 0 deletions

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index 12eb2c882ad..96987d08159 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -790,6 +790,9 @@ pub fn build_codegen_backend(builder: &Builder<'_>,
             if builder.config.llvm_use_libcxx {
                 cargo.env("LLVM_USE_LIBCXX", "1");
             }
+            if builder.config.llvm_optimize && !builder.config.llvm_release_debuginfo {
+                cargo.env("LLVM_NDEBUG", "1");
+            }
         }
         _ => panic!("unknown backend: {}", backend),
     }