stage2 now supports using stage1 as a backend for compiling zig code

 * move stage2.cpp code into zig0.cpp for simplicity
 * add -ftime-report and some more CLI options to stage2
 * stage2 compites the llvm cpu features string
 * classifyFileExt understands more file extensions
 * correction to generateBuiltinZigSource using the wrong allocator
   (thanks dbandstra!)
 * stage2 is now able to build hello.zig into hello.o using stage1 as a
   library however it fails linking due to missing compiler-rt
 * remove dead code
 * simplify zig0 builtin.zig source
 * fix not resolving builtin.zig source path causing duplicate imports
 * fix stage1.h not being valid C code
 * fix stage2.h not being valid C code

1 files changed, 1 insertions, 1 deletions

diff --git a/src/analyze.cpp b/src/analyze.cpp
index ea19d81995..6c6f198e7a 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -7987,7 +7987,7 @@ Error file_fetch(CodeGen *g, Buf *resolved_path, Buf *contents_buf) {
     size_t len;
     const char *contents = stage2_fetch_file(&g->stage1, buf_ptr(resolved_path), buf_len(resolved_path), &len);
     if (contents == nullptr)
-        return ErrorNoMem;
+        return ErrorFileNotFound;
     buf_init_from_mem(contents_buf, contents, len);
     return ErrorNone;
 }