ARM target does not use printAliasInstr machinery which

forces having special checks in ArmInstPrinter::printInstruction. This
patch addresses this issue.

Not all special checks could be removed: either they involve elaborated
conditions under which the alias is emitted (e.g. ldm/stm on sp may be
pop/push but only if the number of registers is >= 2) or the number
of registers is multivalued (like happens again with ldm/stm) and they
do not match the InstAlias pattern which assumes single-valued operands
in the pattern.

Patch by: Roger Ferrer Ibanez

Differential Revision: http://reviews.llvm.org/D20237

llvm-svn: 271667

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.h b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.h
index f550b68cae3..9d80eed84dc 100644
--- a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.h
+++ b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.h
@@ -30,6 +30,12 @@ public:
   // Autogenerated by tblgen.
   void printInstruction(const MCInst *MI, const MCSubtargetInfo &STI,
                         raw_ostream &O);
+  virtual bool printAliasInstr(const MCInst *MI, const MCSubtargetInfo &STI,
+                               raw_ostream &O);
+  virtual void printCustomAliasOperand(const MCInst *MI, unsigned OpIdx,
+                                       unsigned PrintMethodIdx,
+                                       const MCSubtargetInfo &STI,
+                                       raw_ostream &O);
   static const char *getRegisterName(unsigned RegNo);
 
   void printOperand(const MCInst *MI, unsigned OpNo, const MCSubtargetInfo &STI,