S390: Initial impl of full-codegen

R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,joransiu@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1764153002

Cr-Commit-Position: refs/heads/master@{#34541}

BUILD.gn

@@ -1645,6 +1645,7 @@ source_set("v8_base") {
       "src/compiler/s390/instruction-scheduler-s390.cc",
       "src/compiler/s390/instruction-selector-s390.cc",
       "src/debug/s390/debug-s390.cc",
+      "src/full-codegen/s390/full-codegen-s390.cc",
       "src/ic/s390/access-compiler-s390.cc",
       "src/ic/s390/handler-compiler-s390.cc",
       "src/ic/s390/ic-compiler-s390.cc",

src/full-codegen/full-codegen.h

@@ -93,6 +93,12 @@ class FullCodeGenerator: public AstVisitor {
   static const int kCodeSizeMultiplier = 149;
 #elif V8_TARGET_ARCH_MIPS64
   static const int kCodeSizeMultiplier = 149;
+#elif V8_TARGET_ARCH_S390
+// TODO(joransiu): Copied PPC value. Check this is sensible for S390.
+  static const int kCodeSizeMultiplier = 200;
+#elif V8_TARGET_ARCH_S390X
+// TODO(joransiu): Copied PPC value. Check this is sensible for S390X.
+  static const int kCodeSizeMultiplier = 200;
 #else
 #error Unsupported target architecture.
 #endif

tools/gyp/v8.gyp

@@ -1565,6 +1565,7 @@
             '../../src/compiler/s390/instruction-scheduler-s390.cc',
             '../../src/compiler/s390/instruction-selector-s390.cc',
             '../../src/debug/s390/debug-s390.cc',
+            '../../src/full-codegen/s390/full-codegen-s390.cc',
             '../../src/ic/s390/access-compiler-s390.cc',
             '../../src/ic/s390/handler-compiler-s390.cc',
             '../../src/ic/s390/ic-compiler-s390.cc',