Added CallInterfaceDescriptors to all code stubs.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index d9504c7592ea670deb7c65b221338d8d5f5fea03..27952f34014e5ec74602be20b3b0f6012e25dada 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -3797,10 +3797,11 @@ void LCodeGen::DoPower(LPower* instr) {
   Representation exponent_type = instr->hydrogen()->right()->representation();
   // Having marked this as a call, we can use any registers.
   // Just make sure that the input/output registers are the expected ones.
+  Register tagged_exponent = MathPowTaggedDescriptor::exponent();
   DCHECK(!instr->right()->IsDoubleRegister() ||
          ToDoubleRegister(instr->right()).is(xmm1));
   DCHECK(!instr->right()->IsRegister() ||
-         ToRegister(instr->right()).is(eax));
+         ToRegister(instr->right()).is(tagged_exponent));
   DCHECK(ToDoubleRegister(instr->left()).is(xmm2));
   DCHECK(ToDoubleRegister(instr->result()).is(xmm3));
 
@@ -3809,8 +3810,9 @@ void LCodeGen::DoPower(LPower* instr) {
     __ CallStub(&stub);
   } else if (exponent_type.IsTagged()) {
     Label no_deopt;
-    __ JumpIfSmi(eax, &no_deopt);
-    __ CmpObjectType(eax, HEAP_NUMBER_TYPE, ecx);
+    __ JumpIfSmi(tagged_exponent, &no_deopt);
+    DCHECK(!ecx.is(tagged_exponent));
+    __ CmpObjectType(tagged_exponent, HEAP_NUMBER_TYPE, ecx);
     DeoptimizeIf(not_equal, instr->environment());
     __ bind(&no_deopt);
     MathPowStub stub(isolate(), MathPowStub::TAGGED);