Use named temporaries for directional labels.

Directional labels can show up in symbol tables (and we have a llvm-mc test for
that). Given that, we need to make sure they are named.

With that out of the way, use setUseNamesOnTempLabels in llvm-mc so that it
too benefits from the memory saving.

llvm-svn: 239914

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index ef728f3095e..6ecdb2eaa6d 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -500,6 +500,9 @@ int main(int argc, char **argv) {
   } else {
     assert(FileType == OFT_ObjectFile && "Invalid file type!");
 
+    // Don't waste memory on names of temp labels.
+    Ctx.setUseNamesOnTempLabels(false);
+
     if (!Out->os().supportsSeeking()) {
       BOS = make_unique<buffer_ostream>(Out->os());
       OS = BOS.get();