Thumb unconditional branch binary encoding. rdar://8754994

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121496 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Target/ARM/ARMAsmBackend.cpp b/lib/Target/ARM/ARMAsmBackend.cpp
index de05472f90..536d282d0a 100644
--- a/lib/Target/ARM/ARMAsmBackend.cpp
+++ b/lib/Target/ARM/ARMAsmBackend.cpp
@@ -200,6 +200,9 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
     uint32_t Binary = (Value - 4) >> 1;
     return ((Binary & 0x20) << 9) | ((Binary & 0x1f) << 3);
   }
+  case ARM::fixup_arm_thumb_br:
+    // Offset by 4 and don't encode the lower bit, which is always 0.
+    return ((Value - 4) >> 1) & 0x7ff;
   case ARM::fixup_arm_thumb_bcc:
     // Offset by 4 and don't encode the lower bit, which is always 0.
     return ((Value - 4) >> 1) & 0xff;
@@ -317,6 +320,7 @@ static unsigned getFixupKindNumBytes(unsigned Kind) {
   case ARM::fixup_arm_thumb_cp:
     return 1;
 
+  case ARM::fixup_arm_thumb_br:
   case ARM::fixup_arm_thumb_cb:
     return 2;