Cherry pick http://codereview.chromium.org/1791001
"Fix bug in the ARM full code generator for inlined count
operations. (on Android branch)."
Fix bug: 2628556
Change-Id: Ide81c4ba3191aa18e1350d51c1fc44698f364dd2
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 4896373..670de09 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1592,10 +1592,9 @@
// Inline smi case if we are in a loop.
Label stub_call, done;
+ int count_value = expr->op() == Token::INC ? 1 : -1;
if (loop_depth() > 0) {
- __ add(r0, r0, Operand(expr->op() == Token::INC
- ? Smi::FromInt(1)
- : Smi::FromInt(-1)));
+ __ add(r0, r0, Operand(Smi::FromInt(count_value)), SetCC);
__ b(vs, &stub_call);
// We could eliminate this smi check if we split the code at
// the first smi check before calling ToNumber.
@@ -1603,11 +1602,9 @@
__ b(eq, &done);
__ bind(&stub_call);
// Call stub. Undo operation first.
- __ sub(r0, r0, Operand(r1));
+ __ sub(r0, r0, Operand(Smi::FromInt(count_value)));
}
- __ mov(r1, Operand(expr->op() == Token::INC
- ? Smi::FromInt(1)
- : Smi::FromInt(-1)));
+ __ mov(r1, Operand(Smi::FromInt(count_value)));
GenericBinaryOpStub stub(Token::ADD, NO_OVERWRITE);
__ CallStub(&stub);
__ bind(&done);
