ARM32: Lower more integer intrinsics and test.

src/IceTargetLoweringARM32.h

 //===- subzero/src/IceTargetLoweringARM32.h - ARM32 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 154 matching lines @@
   // If no check is needed nothing is inserted.
   void div0Check(Type Ty, Operand *SrcLo, Operand *SrcHi);
   typedef void (TargetARM32::*ExtInstr)(Variable *, Variable *,
                                         CondARM32::Cond);
   typedef void (TargetARM32::*DivInstr)(Variable *, Variable *, Variable *,
                                         CondARM32::Cond);
   void lowerIDivRem(Variable *Dest, Variable *T, Variable *Src0R, Operand *Src1,
                     ExtInstr ExtFunc, DivInstr DivFunc,
                     const char *DivHelperName, bool IsRemainder);
 
+  void lowerCLZ(Variable *Dest, Variable *ValLo, Variable *ValHi);
+
   // The following are helpers that insert lowered ARM32 instructions
   // with minimal syntactic overhead, so that the lowering code can
   // look as close to assembly as practical.
 
   void _add(Variable *Dest, Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Add::create(Func, Dest, Src0, Src1, Pred));
   }
   void _adds(Variable *Dest, Variable *Src0, Operand *Src1,
              CondARM32::Cond Pred = CondARM32::AL) {
@@ skipping 32 matching lines @@
   void _br(CfgNode *Target, CondARM32::Cond Condition) {
     Context.insert(InstARM32Br::create(Func, Target, Condition));
   }
   void _br(InstARM32Label *Label, CondARM32::Cond Condition) {
     Context.insert(InstARM32Br::create(Func, Label, Condition));
   }
   void _cmp(Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Cmp::create(Func, Src0, Src1, Pred));
   }
+  void _clz(Variable *Dest, Variable *Src0,
+            CondARM32::Cond Pred = CondARM32::AL) {
+    Context.insert(InstARM32Clz::create(Func, Dest, Src0, Pred));
+  }
   void _eor(Variable *Dest, Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Eor::create(Func, Dest, Src0, Src1, Pred));
   }
   void _ldr(Variable *Dest, OperandARM32Mem *Addr,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Ldr::create(Func, Dest, Addr, Pred));
   }
   void _lsl(Variable *Dest, Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
@@ skipping 57 matching lines @@
   }
   void _push(const VarList &Sources) {
     Context.insert(InstARM32Push::create(Func, Sources));
   }
   void _pop(const VarList &Dests) {
     Context.insert(InstARM32Pop::create(Func, Dests));
     // Mark dests as modified.
     for (Variable *Dest : Dests)
       Context.insert(InstFakeDef::create(Func, Dest));
   }
+  void _rbit(Variable *Dest, Variable *Src0,
+             CondARM32::Cond Pred = CondARM32::AL) {
+    Context.insert(InstARM32Rbit::create(Func, Dest, Src0, Pred));
+  }
+  void _rev(Variable *Dest, Variable *Src0,
+            CondARM32::Cond Pred = CondARM32::AL) {
+    Context.insert(InstARM32Rev::create(Func, Dest, Src0, Pred));
+  }
   void _ret(Variable *LR, Variable *Src0 = nullptr) {
     Context.insert(InstARM32Ret::create(Func, LR, Src0));
   }
   void _rsb(Variable *Dest, Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Rsb::create(Func, Dest, Src0, Src1, Pred));
   }
   void _sbc(Variable *Dest, Variable *Src0, Operand *Src1,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Sbc::create(Func, Dest, Src0, Src1, Pred));
@@ skipping 40 matching lines @@
     Context.insert(
         InstARM32Umull::create(Func, DestLo, DestHi, Src0, Src1, Pred));
     // Model the modification to the second dest as a fake def.
     // Note that the def is not predicated.
     Context.insert(InstFakeDef::create(Func, DestHi, DestLo));
   }
   void _uxt(Variable *Dest, Variable *Src0,
             CondARM32::Cond Pred = CondARM32::AL) {
     Context.insert(InstARM32Uxt::create(Func, Dest, Src0, Pred));
   }
+  void _set_dest_nonkillable() {
+    Context.getLastInserted()->setDestNonKillable();

[John, 2015/07/08 21:49:21]

_set_dest_nonkillable is used in pretty much every target. Maybe define it in
TargetLowering?

[jvoung (off chromium), 2015/07/09 01:11:24]

Done.

+  }
 
   TargetARM32Features CPUFeatures;
   bool UsesFramePointer = false;
   bool NeedsStackAlignment = false;
   bool MaybeLeafFunc = true;
   size_t SpillAreaSizeBytes = 0;
   llvm::SmallBitVector TypeToRegisterSet[IceType_NUM];
   llvm::SmallBitVector ScratchRegs;
   llvm::SmallBitVector RegsUsed;
   VarList PhysicalRegisters[IceType_NUM];
@@ skipping 69 matching lines @@
 
 private:
   ~TargetHeaderARM32() = default;
 
   TargetARM32Features CPUFeatures;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGARM32_H