Fix some errors introduced by rL370563 which were not exposed on my local machine.

1. zlib::compress accept &size_t but the param is an uint64_t.
2. Some systems don't have zlib installed. Don't use compression by default.

llvm-svn: 370564

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp
index d3b7c2b2c80..a894d10c9c7 100644
--- a/llvm/tools/llvm-profdata/llvm-profdata.cpp
+++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -637,7 +637,7 @@ static int merge_main(int argc, const char *argv[]) {
       cl::desc("Path to file containing the list of function symbols "
                "used to populate profile symbol list"));
   cl::opt<bool> CompressProfSymList(
-      "compress-prof-sym-list", cl::init(true), cl::Hidden,
+      "compress-prof-sym-list", cl::init(false), cl::Hidden,
       cl::desc("Compress profile symbol list before write it into profile. "));
 
   cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");