[SystemZ] Support execution hint instructions

This adds assembler support for the instructions provided by the
execution-hint facility (NIAI and BP(R)P).  This required adding
support for the new relocation types for 12-bit and 24-bit PC-
relative offsets used by the BP(R)P instructions.

llvm-svn: 288031

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/SystemZ/SystemZSubtarget.h b/llvm/lib/Target/SystemZ/SystemZSubtarget.h
index 8475e2edaf2..cdb61327a16 100644
--- a/llvm/lib/Target/SystemZ/SystemZSubtarget.h
+++ b/llvm/lib/Target/SystemZ/SystemZSubtarget.h
@@ -42,6 +42,7 @@ protected:
   bool HasFastSerialization;
   bool HasInterlockedAccess1;
   bool HasMiscellaneousExtensions;
+  bool HasExecutionHint;
   bool HasLoadAndTrap;
   bool HasTransactionalExecution;
   bool HasProcessorAssist;
@@ -114,6 +115,9 @@ public:
     return HasMiscellaneousExtensions;
   }
 
+  // Return true if the target has the execution-hint facility.
+  bool hasExecutionHint() const { return HasExecutionHint; }
+
   // Return true if the target has the load-and-trap facility.
   bool hasLoadAndTrap() const { return HasLoadAndTrap; }