Add a FIXME and two asserts for now in the ARMAsmParser when it sees .code 16 or

.code 32 if the TargetMachine's isThumb() boolean does not match.  The correct
fix is to switch ARM subtargets at that point and is tracked by rdar://8856789
which is bigger task.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123353 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 2 deletions

diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 2aabd02619..c8ffa267ac 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -1351,10 +1351,20 @@ bool ARMAsmParser::ParseDirectiveCode(SMLoc L) {
     return Error(Parser.getTok().getLoc(), "unexpected token in directive");
   Parser.Lex();
 
-  if (Val == 16)
+  // FIXME: We need to be able switch subtargets at this point so that
+  // MatchInstructionImpl() will work when it gets the AvailableFeatures which
+  // includes Feature_IsThumb or not to match the right instructions.  This is
+  // blocked on the FIXME in llvm-mc.cpp when creating the TargetMachine.
+  if (Val == 16){
+    assert(TM.getSubtarget<ARMSubtarget>().isThumb() &&
+	   "switching between arm/thumb not yet suppported via .code 16)");
     getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
-  else
+  }
+  else{
+    assert(!TM.getSubtarget<ARMSubtarget>().isThumb() &&
+           "switching between thumb/arm not yet suppported via .code 32)");
     getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
+   }
 
   return false;
 }