Subzero, MIPS32: Stacksave/Stackrestore implementation

src/IceTargetLoweringMIPS32.h

 //===- subzero/src/IceTargetLoweringMIPS32.h - MIPS32 lowering ---*- C++-*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 347 matching lines @@
       auto *Instr = Context.insert<InstMIPS32Mov>(Dest, Src0, Src1);
       if (Instr->getDestHi() != nullptr) {
         // If DestHi is available, then Dest must be a Variable64On32. We add a
         // fake-def for Instr.DestHi here.
         assert(llvm::isa<Variable64On32>(Dest));
         Context.insert<InstFakeDef>(Instr->getDestHi());
       }
     }
   }
 
+  void _mov_redefined(Variable *Dest, Operand *Src0, Operand *Src1 = nullptr) {
+    if (llvm::isa<ConstantRelocatable>(Src0)) {
+      Context.insert<InstMIPS32La>(Dest, Src0);
+    } else {
+        auto *Instr = Context.insert<InstMIPS32Mov>(Dest, Src0, Src1);
+        Instr->setDestRedefined();
+        if (Instr->getDestHi() != nullptr) {
+          // If Instr is multi-dest, then Dest must be a Variable64On32. We add a

[jaydeep.patil, 2016/10/27 09:59:39]

Reflow comment to 80-col

[Jim Stichnoth, 2016/10/27 14:03:38]

Actually this needs a "make -f Makefile.standalone format" because the entire
block is indented 2 spaces too many.

+          // fake-def for Instr.DestHi here.
+          assert(llvm::isa<Variable64On32>(Dest));
+          Context.insert<InstFakeDef>(Instr->getDestHi());
+        }
+    }
+  }
+
   void _mov_d(Variable *Dest, Variable *Src) {
     Context.insert<InstMIPS32Mov_d>(Dest, Src);
   }
 
   void _mov_s(Variable *Dest, Variable *Src) {
     Context.insert<InstMIPS32Mov_s>(Dest, Src);
   }
 
   void _movf(Variable *Dest, Variable *Src0, Operand *FCC) {
     Context.insert<InstMIPS32Movf>(Dest, Src0, FCC)->setDestRedefined();
@@ skipping 504 matching lines @@
   explicit TargetHeaderMIPS32(GlobalContext *Ctx);
 
 private:
   ~TargetHeaderMIPS32() = default;
 };
 
 } // end of namespace MIPS32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGMIPS32_H