From 38b91a4ffeaa9871ed4b947b1ddf460f8eb0772c Mon Sep 17 00:00:00 2001
From: "fschneider@chromium.org"
 <fschneider@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Wed, 26 Jan 2011 15:28:17 +0000
Subject: [PATCH] Fix issue 1076 by resetting labels of switch-clauses before
 use.

If we compile a function literal twice with the full code generator,
we must make sure that the labels embedded in the AST are reset.

BUG=1076

Review URL: http://codereview.chromium.org/6339014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6496 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/arm/full-codegen-arm.cc   | 2 ++
 src/ia32/full-codegen-ia32.cc | 2 ++
 src/x64/full-codegen-x64.cc   | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index f04b823141..47b0b28c3b 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -734,6 +734,8 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
   // Compile all the tests with branches to their bodies.
   for (int i = 0; i < clauses->length(); i++) {
     CaseClause* clause = clauses->at(i);
+    clause->body_target()->entry_label()->Unuse();
+
     // The default is not a test, but remember it as final fall through.
     if (clause->is_default()) {
       default_clause = clause;
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index aa0dafb838..8bcb49f2e1 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -764,6 +764,8 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
   // Compile all the tests with branches to their bodies.
   for (int i = 0; i < clauses->length(); i++) {
     CaseClause* clause = clauses->at(i);
+    clause->body_target()->entry_label()->Unuse();
+
     // The default is not a test, but remember it as final fall through.
     if (clause->is_default()) {
       default_clause = clause;
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 60efe03db7..8b7f3c2b2c 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -710,6 +710,8 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
   // Compile all the tests with branches to their bodies.
   for (int i = 0; i < clauses->length(); i++) {
     CaseClause* clause = clauses->at(i);
+    clause->body_target()->entry_label()->Unuse();
+
     // The default is not a test, but remember it as final fall through.
     if (clause->is_default()) {
       default_clause = clause;