Revert "Use std::bitset for SubtargetFeatures"

This reverts commit r233055.

It still causes buildbot failures (gcc running out of memory on several platforms, and a self-host failure on arm), although less than the previous time.

llvm-svn: 233068

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
index 4d1bec33401..e48cabbf7ee 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
@@ -51,10 +51,10 @@ public:
   ~ARMMCCodeEmitter() {}
 
   bool isThumb(const MCSubtargetInfo &STI) const {
-    return STI.getFeatureBits()[ARM::ModeThumb];
+    return (STI.getFeatureBits() & ARM::ModeThumb) != 0;
   }
   bool isThumb2(const MCSubtargetInfo &STI) const {
-    return isThumb(STI) && STI.getFeatureBits()[ARM::FeatureThumb2];
+    return isThumb(STI) && (STI.getFeatureBits() & ARM::FeatureThumb2) != 0;
   }
   bool isTargetMachO(const MCSubtargetInfo &STI) const {
     Triple TT(STI.getTargetTriple());