ARM: .end_data_region mismatch in Thumb2.

32-bit offset jump tables just use real branch instructions and so aren't
marked as data regions. We were still emitting the .end_data_region
marker though, which assert()ed.

rdar://11499158

llvm-svn: 157221

1 files changed, 5 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
index e781498f1df..2a70a376f33 100644
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -1036,8 +1036,11 @@ void ARMAsmPrinter::EmitJump2Table(const MachineInstr *MI) {
                                    OutContext);
     OutStreamer.EmitValue(Expr, OffsetWidth);
   }
-  // Mark the end of jump table data-in-code region.
-  OutStreamer.EmitDataRegion(MCDR_DataRegionEnd);
+  // Mark the end of jump table data-in-code region. 32-bit offsets use
+  // actual branch instructions here, so we don't mark those as a data-region
+  // at all.
+  if (OffsetWidth != 4)
+    OutStreamer.EmitDataRegion(MCDR_DataRegionEnd);
 }
 
 void ARMAsmPrinter::PrintDebugValueComment(const MachineInstr *MI,