Fixed flooring division by a power of 2, once again...

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 800f67b7172f2eac7ae2f5354e01c4d3b6bc06bf..249c22f77bf3176b3e23583f3c29f1c02c274681 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -1469,20 +1469,22 @@ void LCodeGen::DoFlooringDivByPowerOf2I(LFlooringDivByPowerOf2I* instr) {
     DeoptimizeIf(eq, instr->environment());
   }
 
-  // If the negation could not overflow, simply shifting is OK.
-  if (!instr->hydrogen()->CheckFlag(HValue::kLeftCanBeMinInt)) {
-    __ mov(result, Operand(dividend, ASR, shift));
+  // Dividing by -1 is basically negation, unless we overflow.
+  if (divisor == -1) {
+    if (instr->hydrogen()->CheckFlag(HValue::kLeftCanBeMinInt)) {
+      DeoptimizeIf(vs, instr->environment());
+    }
     return;
   }
 
-  // Dividing by -1 is basically negation, unless we overflow.
-  if (divisor == -1) {
-    DeoptimizeIf(vs, instr->environment());
+  // If the negation could not overflow, simply shifting is OK.
+  if (!instr->hydrogen()->CheckFlag(HValue::kLeftCanBeMinInt)) {
+    __ mov(result, Operand(result, ASR, shift));
     return;
   }
 
   __ mov(result, Operand(kMinInt / divisor), LeaveCC, vs);
-  __ mov(result, Operand(dividend, ASR, shift), LeaveCC, vc);
+  __ mov(result, Operand(result, ASR, shift), LeaveCC, vc);
 }