diff -pNur qtscript-everywhere-src-5.15.11/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h qtscript-everywhere-src-5.15.11_1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h
--- qtscript-everywhere-src-5.15.11/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h	2022-06-15 17:21:05.000000000 +0000
+++ qtscript-everywhere-src-5.15.11_1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h	2024-06-04 09:23:59.188158418 +0000
@@ -397,6 +397,11 @@
 #endif
 #endif /* __mips__ */
 
+/* CPU(LOONGARCH64) */
+#if defined(__loongarch64__) || defined(__loongarch64)
+#define WTF_CPU_LOONGARCH64 1
+#endif
+
 /* CPU(RISCV64) - RISC-V 64-bit */
 #if defined(__riscv) && __riscv_xlen == 64
 #define WTF_CPU_RISCV64 1
@@ -958,7 +963,7 @@
 #endif
 
 #if !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32) && !defined(WTF_USE_JSVALUE32_64)
-#if (CPU(X86_64) && !CPU(X32) && (OS(UNIX) || OS(WINDOWS) || OS(SOLARIS) || OS(HPUX))) || (CPU(IA64) && !CPU(IA64_32)) || CPU(ALPHA) || CPU(AIX64) || CPU(SPARC64) || CPU(MIPS64) || CPU(AARCH64) || CPU(RISCV64)
+#if (CPU(X86_64) && !CPU(X32) && (OS(UNIX) || OS(WINDOWS) || OS(SOLARIS) || OS(HPUX))) || (CPU(IA64) && !CPU(IA64_32)) || CPU(ALPHA) || CPU(AIX64) || CPU(SPARC64) || CPU(MIPS64) || CPU(LOONGARCH64) || CPU(AARCH64) || CPU(RISCV64)
 #define WTF_USE_JSVALUE64 1
 #elif CPU(ARM) || CPU(PPC64) || CPU(RISCV32)
 #define WTF_USE_JSVALUE32 1