commit f53c389dbd4b0ae66307e9bd4a72b36b3d284ec3
author Omar Zuniga <omarzl@hotmail.es> Wed Aug 25 07:09:23 2021 -0700
committer Copybara-Service <copybara-worker@google.com> Wed Aug 25 07:11:02 2021 -0700
tree 102bf9e3cf6afb00cf20f1e653d57db4f3852704
parent 2f2a437b9052aa158ee77d73063572683ff1b112

LLVM BC support

Using [rules_swift](https://github.com/bazelbuild/rules_swift) it is possible to generate LLVM IR BC files using `swift.emit_bc` feature, some days ago a [refactor](https://github.com/bazelbuild/rules_swift/commit/8cf36354655e6baa276fd7a5bae29b00ee5757c3#diff-535d0dbea9614c6905a30dfdb0e708df3b16fc68f8930d6aba519342509dc657R1948) to use `create_compilation_outputs` from `cc_common` was merged, it is giving us the following error since the bc extension is missing, this pr fixes it

```
Error in create_compilation_outputs: 'Somefile.swift.bc' has wrong extension. The list of possible extensions for 'objects' is: .o,.obj,.pic.o,.opb
```

Closes #13889.

PiperOrigin-RevId: 392889724

src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
index f9db2ac..7123014 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppFileTypes.java
@@ -34,6 +34,7 @@
   public static final FileType OBJCPP_SOURCE = FileType.of(".mm");
   public static final FileType CLIF_INPUT_PROTO = FileType.of(".ipb");
   public static final FileType CLIF_OUTPUT_PROTO = FileType.of(".opb");
+  public static final FileType BC_SOURCE = FileType.of(".bc");
 
   public static final FileTypeSet ALL_C_CLASS_SOURCE =
       FileTypeSet.of(

src/main/java/com/google/devtools/build/lib/rules/cpp/Link.java

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/Link.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/Link.java
index 37fabe1..6926f5b 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/Link.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/Link.java
@@ -64,7 +64,10 @@
   /** The set of object files */
   public static final FileTypeSet OBJECT_FILETYPES =
       FileTypeSet.of(
-          CppFileTypes.OBJECT_FILE, CppFileTypes.PIC_OBJECT_FILE, CppFileTypes.CLIF_OUTPUT_PROTO);
+          CppFileTypes.OBJECT_FILE,
+          CppFileTypes.PIC_OBJECT_FILE,
+          CppFileTypes.CLIF_OUTPUT_PROTO,
+          CppFileTypes.BC_SOURCE);
 
   /**
    * Whether a particular link target requires PIC code.