diff --git a/tools/gyp/v8_base.arm.host.darwin-arm.mk b/tools/gyp/v8_base.arm.host.darwin-arm.mk
index 6054518..189f9f8 100644
--- a/tools/gyp/v8_base.arm.host.darwin-arm.mk
+++ b/tools/gyp/v8_base.arm.host.darwin-arm.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.arm.host.linux-arm.mk b/tools/gyp/v8_base.arm.host.linux-arm.mk
index 67dbb6e..b78c5f0 100644
--- a/tools/gyp/v8_base.arm.host.linux-arm.mk
+++ b/tools/gyp/v8_base.arm.host.linux-arm.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.arm.target.darwin-arm.mk b/tools/gyp/v8_base.arm.target.darwin-arm.mk
index e70d6cb..439c3ea 100644
--- a/tools/gyp/v8_base.arm.target.darwin-arm.mk
+++ b/tools/gyp/v8_base.arm.target.darwin-arm.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.arm.target.linux-arm.mk b/tools/gyp/v8_base.arm.target.linux-arm.mk
index e70d6cb..439c3ea 100644
--- a/tools/gyp/v8_base.arm.target.linux-arm.mk
+++ b/tools/gyp/v8_base.arm.target.linux-arm.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.ia32.host.darwin-x86.mk b/tools/gyp/v8_base.ia32.host.darwin-x86.mk
index 76caabb..862c6f0 100644
--- a/tools/gyp/v8_base.ia32.host.darwin-x86.mk
+++ b/tools/gyp/v8_base.ia32.host.darwin-x86.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.ia32.host.linux-x86.mk b/tools/gyp/v8_base.ia32.host.linux-x86.mk
index 0693c17..d43635b 100644
--- a/tools/gyp/v8_base.ia32.host.linux-x86.mk
+++ b/tools/gyp/v8_base.ia32.host.linux-x86.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.ia32.target.darwin-x86.mk b/tools/gyp/v8_base.ia32.target.darwin-x86.mk
index 77a5faf..5e34548 100644
--- a/tools/gyp/v8_base.ia32.target.darwin-x86.mk
+++ b/tools/gyp/v8_base.ia32.target.darwin-x86.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.ia32.target.linux-x86.mk b/tools/gyp/v8_base.ia32.target.linux-x86.mk
index 77a5faf..5e34548 100644
--- a/tools/gyp/v8_base.ia32.target.linux-x86.mk
+++ b/tools/gyp/v8_base.ia32.target.linux-x86.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.mipsel.host.darwin-mips.mk b/tools/gyp/v8_base.mipsel.host.darwin-mips.mk
index 6b6db0a..1de1d0a 100644
--- a/tools/gyp/v8_base.mipsel.host.darwin-mips.mk
+++ b/tools/gyp/v8_base.mipsel.host.darwin-mips.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.mipsel.host.linux-mips.mk b/tools/gyp/v8_base.mipsel.host.linux-mips.mk
index 6afc8ca..b885daf 100644
--- a/tools/gyp/v8_base.mipsel.host.linux-mips.mk
+++ b/tools/gyp/v8_base.mipsel.host.linux-mips.mk
@@ -52,6 +52,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -78,6 +79,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.mipsel.target.darwin-mips.mk b/tools/gyp/v8_base.mipsel.target.darwin-mips.mk
index 4b2f46c..9829b19 100644
--- a/tools/gyp/v8_base.mipsel.target.darwin-mips.mk
+++ b/tools/gyp/v8_base.mipsel.target.darwin-mips.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \
diff --git a/tools/gyp/v8_base.mipsel.target.linux-mips.mk b/tools/gyp/v8_base.mipsel.target.linux-mips.mk
index 4b2f46c..9829b19 100644
--- a/tools/gyp/v8_base.mipsel.target.linux-mips.mk
+++ b/tools/gyp/v8_base.mipsel.target.linux-mips.mk
@@ -53,6 +53,7 @@
 	v8/src/dateparser.cc \
 	v8/src/debug-agent.cc \
 	v8/src/debug.cc \
+	v8/src/defaults.cc \
 	v8/src/deoptimizer.cc \
 	v8/src/disassembler.cc \
 	v8/src/diy-fp.cc \
@@ -79,6 +80,7 @@
 	v8/src/hydrogen-bce.cc \
 	v8/src/hydrogen-bch.cc \
 	v8/src/hydrogen-canonicalize.cc \
+	v8/src/hydrogen-check-elimination.cc \
 	v8/src/hydrogen-dce.cc \
 	v8/src/hydrogen-dehoist.cc \
 	v8/src/hydrogen-deoptimizing-mark.cc \