Don't include GCC backend if SKIP_CODEGEN_TESTS is not enabled

Author: GuillaumeGomez

src/ci/run.sh

@@ -126,8 +126,13 @@ else
 
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.verify-llvm-ir"
 
-  # Test the Cranelift backend in CI. Bootstrap knows which targets to run tests on.
-  RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=llvm,cranelift,gcc"
+  if [[ "${SKIP_CODEGEN_TESTS}" == "1" ]]; then
+    # Test the Cranelift backend in CI. Bootstrap knows which targets to run tests on.
+    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=llvm,cranelift"
+  else
+    # Test the Cranelift and GCC backends in CI. Bootstrap knows which targets to run tests on.
+    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=llvm,cranelift,gcc"
+  fi
 
   # We enable this for non-dist builders, since those aren't trying to produce
   # fresh binaries. We currently don't entirely support distributing a fresh