8297476: Increase InlineSmallCode default from 1000 to 2500 for RISC-V

Backport-of: 5e196b4b8e623107424e2fb54672790fd925fe73

Author: RealFYang

src/hotspot/share/compiler/compilerDefinitions.cpp

@@ -394,13 +394,7 @@ void CompilerConfig::set_compilation_policy_flags() {
   if (CompilerConfig::is_tiered() && CompilerConfig::is_c2_enabled()) {
 #ifdef COMPILER2
     // Some inlining tuning
-#ifdef X86
-    if (FLAG_IS_DEFAULT(InlineSmallCode)) {
-      FLAG_SET_DEFAULT(InlineSmallCode, 2500);
-    }
-#endif
-
-#if defined AARCH64
+#if defined(X86) || defined(AARCH64) || defined(RISCV64)
     if (FLAG_IS_DEFAULT(InlineSmallCode)) {
       FLAG_SET_DEFAULT(InlineSmallCode, 2500);
     }