[CSKY] Fix .bss directive compling error created by --save-temps

.bss without symbol and num following can't be compiled in CSKY target, which is consistent to GCC behavior.
So when --save-temps generates .bss, we should UsesELFSectionDirectiveForBSS to avoid such error.

diff --git a/llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCAsmInfo.cpp b/llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCAsmInfo.cpp
index 543f2e3..e8576d3 100644 (file)
--- a/llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCAsmInfo.cpp
+++ b/llvm/lib/Target/CSKY/MCTargetDesc/CSKYMCAsmInfo.cpp
@@ -23,5 +23,8 @@ CSKYMCAsmInfo::CSKYMCAsmInfo(const Triple &TargetTriple) {
   SupportsDebugInformation = true;
   CommentString = "#";
 
+  // Uses '.section' before '.bss' directive
+  UsesELFSectionDirectiveForBSS = true;
+
   ExceptionsType = ExceptionHandling::DwarfCFI;
 }