Revert "Handle non-power-of-2 divisors in division-like operations", "A64 tweaks for division-like …

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index a37a562cc9c560c8163812620cf083004d754e19..29cfc5fccc256f4df97386f17f05218ab8be03d0 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -85,7 +85,6 @@ class LCodeGen;
   V(DebugBreak)                                 \
   V(DeclareGlobals)                             \
   V(Deoptimize)                                 \
-  V(DivByConstI)                                \
   V(DivByPowerOf2I)                             \
   V(DivI)                                       \
   V(DoubleToI)                                  \
@@ -136,7 +135,6 @@ class LCodeGen;
   V(MathPowHalf)                                \
   V(MathRound)                                  \
   V(MathSqrt)                                   \
-  V(ModByConstI)                                \
   V(ModByPowerOf2I)                             \
   V(ModI)                                       \
   V(MulI)                                       \
@@ -638,31 +636,6 @@ class LModByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LModByConstI V8_FINAL : public LTemplateInstruction<1, 1, 2> {
- public:
-  LModByConstI(LOperand* dividend,
-               int32_t divisor,
-               LOperand* temp1,
-               LOperand* temp2) {
-    inputs_[0] = dividend;
-    divisor_ = divisor;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
-  }
-
-  LOperand* dividend() { return inputs_[0]; }
-  int32_t divisor() const { return divisor_; }
-  LOperand* temp1() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ModByConstI, "mod-by-const-i")
-  DECLARE_HYDROGEN_ACCESSOR(Mod)
-
- private:
-  int32_t divisor_;
-};
-
-
 class LModI V8_FINAL : public LTemplateInstruction<1, 2, 1> {
  public:
   LModI(LOperand* left, LOperand* right, LOperand* temp) {
@@ -698,31 +671,6 @@ class LDivByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LDivByConstI V8_FINAL : public LTemplateInstruction<1, 1, 2> {
- public:
-  LDivByConstI(LOperand* dividend,
-               int32_t divisor,
-               LOperand* temp1,
-               LOperand* temp2) {
-    inputs_[0] = dividend;
-    divisor_ = divisor;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
-  }
-
-  LOperand* dividend() { return inputs_[0]; }
-  int32_t divisor() const { return divisor_; }
-  LOperand* temp1() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  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) {
@@ -761,22 +709,17 @@ class LFlooringDivByPowerOf2I V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LFlooringDivByConstI V8_FINAL : public LTemplateInstruction<1, 1, 2> {
+class LFlooringDivByConstI V8_FINAL : public LTemplateInstruction<1, 1, 1> {
  public:
-  LFlooringDivByConstI(LOperand* dividend,
-                       int32_t divisor,
-                       LOperand* temp1,
-                       LOperand* temp2) {
+  LFlooringDivByConstI(LOperand* dividend, int32_t divisor, LOperand* temp) {
     inputs_[0] = dividend;
     divisor_ = divisor;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
+    temps_[0] = temp;
   }
 
   LOperand* dividend() { return inputs_[0]; }
   int32_t divisor() const { return divisor_; }
-  LOperand* temp1() { return temps_[0]; }
-  LOperand* temp2() { return temps_[0]; }
+  LOperand* temp() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(FlooringDivByConstI, "flooring-div-by-const-i")
   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
@@ -2662,10 +2605,8 @@ 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);