[PATCH] [sparc] Only support the 'm' inline assembly memory constraint. NFC.

[Daniel Sanders]

Hi venkatra,

SPARC doesn't seem to support any additional constraints. Therefore remove
the target hook.

No functional change intended. Depends on D8173.

http://reviews.llvm.org/D8214

Files:
  lib/Target/Sparc/SparcISelLowering.h

Index: lib/Target/Sparc/SparcISelLowering.h
===================================================================
--- lib/Target/Sparc/SparcISelLowering.h
+++ lib/Target/Sparc/SparcISelLowering.h
@@ -85,12 +85,6 @@
                                  const std::string &Constraint,
                                  MVT VT) const override;
 
-    unsigned getInlineAsmMemConstraint(
-        const std::string ConstraintCode) const override {
-      // FIXME: Map different constraints differently.
-      return InlineAsm::Constraint_m;
-    }
-
     bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const override;
     MVT getScalarShiftAmountTy(EVT LHSTy) const override { return MVT::i32; }

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