Emit unwinding information for TurboFan code.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 8a03cc916c37438fa1d28623446fb0adbf7e3775..bdc75a5730f2037dfeaf379ce9c591aa2d447f9e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1050,6 +1050,7 @@ v8_source_set("v8_base") {
     "src/compiler/type-hints.h",
     "src/compiler/typer.cc",
     "src/compiler/typer.h",
+    "src/compiler/unwinding-info-writer.h",
     "src/compiler/value-numbering-reducer.cc",
     "src/compiler/value-numbering-reducer.h",
     "src/compiler/verifier.cc",
@@ -1569,6 +1570,7 @@ v8_source_set("v8_base") {
       "src/compiler/ia32/instruction-codes-ia32.h",
       "src/compiler/ia32/instruction-scheduler-ia32.cc",
       "src/compiler/ia32/instruction-selector-ia32.cc",
+      "src/compiler/ia32/unwinding-info-writer-ia32.h",
       "src/crankshaft/ia32/lithium-codegen-ia32.cc",
       "src/crankshaft/ia32/lithium-codegen-ia32.h",
       "src/crankshaft/ia32/lithium-gap-resolver-ia32.cc",
@@ -1607,6 +1609,8 @@ v8_source_set("v8_base") {
       "src/compiler/x64/instruction-codes-x64.h",
       "src/compiler/x64/instruction-scheduler-x64.cc",
       "src/compiler/x64/instruction-selector-x64.cc",
+      "src/compiler/x64/unwinding-info-writer-x64.cc",
+      "src/compiler/x64/unwinding-info-writer-x64.h",
       "src/crankshaft/x64/lithium-codegen-x64.cc",
       "src/crankshaft/x64/lithium-codegen-x64.h",
       "src/crankshaft/x64/lithium-gap-resolver-x64.cc",
@@ -1668,6 +1672,8 @@ v8_source_set("v8_base") {
       "src/compiler/arm/instruction-codes-arm.h",
       "src/compiler/arm/instruction-scheduler-arm.cc",
       "src/compiler/arm/instruction-selector-arm.cc",
+      "src/compiler/arm/unwinding-info-writer-arm.cc",
+      "src/compiler/arm/unwinding-info-writer-arm.h",
       "src/crankshaft/arm/lithium-arm.cc",
       "src/crankshaft/arm/lithium-arm.h",
       "src/crankshaft/arm/lithium-codegen-arm.cc",
@@ -1722,6 +1728,8 @@ v8_source_set("v8_base") {
       "src/compiler/arm64/instruction-codes-arm64.h",
       "src/compiler/arm64/instruction-scheduler-arm64.cc",
       "src/compiler/arm64/instruction-selector-arm64.cc",
+      "src/compiler/arm64/unwinding-info-writer-arm64.cc",
+      "src/compiler/arm64/unwinding-info-writer-arm64.h",
       "src/crankshaft/arm64/delayed-masm-arm64-inl.h",
       "src/crankshaft/arm64/delayed-masm-arm64.cc",
       "src/crankshaft/arm64/delayed-masm-arm64.h",
@@ -1747,6 +1755,7 @@ v8_source_set("v8_base") {
       "src/compiler/mips/instruction-codes-mips.h",
       "src/compiler/mips/instruction-scheduler-mips.cc",
       "src/compiler/mips/instruction-selector-mips.cc",
+      "src/compiler/mips/unwinding-info-writer-mips.h",
       "src/crankshaft/mips/lithium-codegen-mips.cc",
       "src/crankshaft/mips/lithium-codegen-mips.h",
       "src/crankshaft/mips/lithium-gap-resolver-mips.cc",
@@ -1789,6 +1798,7 @@ v8_source_set("v8_base") {
       "src/compiler/mips64/instruction-codes-mips64.h",
       "src/compiler/mips64/instruction-scheduler-mips64.cc",
       "src/compiler/mips64/instruction-selector-mips64.cc",
+      "src/compiler/mips64/unwinding-info-writer-mips64.h",
       "src/crankshaft/mips64/lithium-codegen-mips64.cc",
       "src/crankshaft/mips64/lithium-codegen-mips64.h",
       "src/crankshaft/mips64/lithium-gap-resolver-mips64.cc",
@@ -1831,6 +1841,7 @@ v8_source_set("v8_base") {
       "src/compiler/s390/instruction-codes-s390.h",
       "src/compiler/s390/instruction-scheduler-s390.cc",
       "src/compiler/s390/instruction-selector-s390.cc",
+      "src/compiler/s390/unwinding-info-writer-s390.h",
       "src/crankshaft/s390/lithium-codegen-s390.cc",
       "src/crankshaft/s390/lithium-codegen-s390.h",
       "src/crankshaft/s390/lithium-gap-resolver-s390.cc",