Reland "Handle non-power-of-2 divisors in division-like operations".

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index a304258dcc55c4513054b592a7b8b8457291617f..86cf2f293141cc8223b6555d0f03d8ade9c55dcb 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -86,6 +86,7 @@ class LCodeGen;
   V(DebugBreak)                                 \
   V(DeclareGlobals)                             \
   V(Deoptimize)                                 \
+  V(DivByConstI)                                \
   V(DivByPowerOf2I)                             \
   V(DivI)                                       \
   V(DoubleBits)                                 \
@@ -137,6 +138,7 @@ class LCodeGen;
   V(MathPowHalf)                                \
   V(MathRound)                                  \
   V(MathSqrt)                                   \
+  V(ModByConstI)                                \
   V(ModByPowerOf2I)                             \
   V(ModI)                                       \
   V(MulI)                                       \
@@ -638,6 +640,24 @@ class LModByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
+class LModByConstI V8_FINAL : public LTemplateInstruction<1, 1, 0> {
+ public:
+  LModByConstI(LOperand* dividend, int32_t divisor) {
+    inputs_[0] = dividend;
+    divisor_ = divisor;
+  }
+
+  LOperand* dividend() { return inputs_[0]; }
+  int32_t divisor() const { return divisor_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ModByConstI, "mod-by-const-i")
+  DECLARE_HYDROGEN_ACCESSOR(Mod)
+
+ private:
+  int32_t divisor_;
+};
+
+
 class LModI V8_FINAL : public LTemplateInstruction<1, 2, 2> {
  public:
   LModI(LOperand* left, LOperand* right, LOperand* temp, LOperand* temp2) {
@@ -675,6 +695,24 @@ class LDivByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
+class LDivByConstI V8_FINAL : public LTemplateInstruction<1, 1, 0> {
+ public:
+  LDivByConstI(LOperand* dividend, int32_t divisor) {
+    inputs_[0] = dividend;
+    divisor_ = divisor;
+  }
+
+  LOperand* dividend() { return inputs_[0]; }
+  int32_t divisor() const { return divisor_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DivByConstI, "div-by-const-i")
+  DECLARE_HYDROGEN_ACCESSOR(Div)
+
+ private:
+  int32_t divisor_;
+};
+
+
 class LDivI V8_FINAL : public LTemplateInstruction<1, 2, 1> {
  public:
   LDivI(LOperand* left, LOperand* right, LOperand* temp) {
@@ -713,20 +751,22 @@ class LFlooringDivByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LFlooringDivByConstI V8_FINAL : public LTemplateInstruction<1, 2, 1> {
+class LFlooringDivByConstI V8_FINAL : public LTemplateInstruction<1, 1, 0> {
  public:
-  LFlooringDivByConstI(LOperand* dividend, LOperand* divisor, LOperand* temp) {
+  LFlooringDivByConstI(LOperand* dividend, int32_t divisor) {
     inputs_[0] = dividend;
-    inputs_[1] = divisor;
-    temps_[0] = temp;
+    divisor_ = divisor;
   }
 
   LOperand* dividend() { return inputs_[0]; }
-  LOperand* divisor() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
+  int32_t divisor() const { return divisor_; }
+  LOperand* temp1() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(FlooringDivByConstI, "flooring-div-by-const-i")
   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
+
+ private:
+  int32_t divisor_;
 };
 
 
@@ -2711,8 +2751,10 @@ class LChunkBuilder V8_FINAL : public LChunkBuilderBase {
   LInstruction* DoMathPowHalf(HUnaryMathOperation* instr);
   LInstruction* DoMathClz32(HUnaryMathOperation* instr);
   LInstruction* DoDivByPowerOf2I(HDiv* instr);
+  LInstruction* DoDivByConstI(HDiv* instr);
   LInstruction* DoDivI(HBinaryOperation* instr);
   LInstruction* DoModByPowerOf2I(HMod* instr);
+  LInstruction* DoModByConstI(HMod* instr);
   LInstruction* DoModI(HMod* instr);
   LInstruction* DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr);
   LInstruction* DoFlooringDivByConstI(HMathFloorOfDiv* instr);