Replace STATIC_CHECK with STATIC_ASSERT.

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index b8f9759a8450e87266a0d164351daef0629db7e3..31ef347d1a883e9b8e0a45c2e37096fb45c2902b 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -1449,8 +1449,8 @@ void RegExpExecStub::Generate(MacroAssembler* masm) {
   // (5b) Is subject external?  If yes, go to (8).
   __ testb(rbx, Immediate(kStringRepresentationMask));
   // The underlying external string is never a short external string.
-  STATIC_CHECK(ExternalString::kMaxShortLength < ConsString::kMinLength);
-  STATIC_CHECK(ExternalString::kMaxShortLength < SlicedString::kMinLength);
+  STATIC_ASSERT(ExternalString::kMaxShortLength < ConsString::kMinLength);
+  STATIC_ASSERT(ExternalString::kMaxShortLength < SlicedString::kMinLength);
   __ j(not_zero, &external_string);  // Go to (8)
 
   // (6) One byte sequential.  Load regexp code for one byte.
@@ -3423,7 +3423,7 @@ void SubStringStub::Generate(MacroAssembler* masm) {
 
   // Handle external string.
   // Rule out short external strings.
-  STATIC_CHECK(kShortExternalStringTag != 0);
+  STATIC_ASSERT(kShortExternalStringTag != 0);
   __ testb(rbx, Immediate(kShortExternalStringMask));
   __ j(not_zero, &runtime);
   __ movp(rdi, FieldOperand(rdi, ExternalString::kResourceDataOffset));