Bug 1975645 - [riscv64] Part 1: Enable MacroAssembler::debugAssertCanonicalInt32 code generation. r=jandem

Differential Revision: https://phabricator.services.mozilla.com/D256068

Author: CSharperMantle

js/src/jit/MacroAssembler.cpp

@@ -8061,7 +8061,8 @@ void MacroAssembler::debugAssertCanonicalInt32(Register r) {
     branchPtr(Assembler::BelowOrEqual, r, ImmWord(UINT32_MAX), &ok);
     breakpoint();
     bind(&ok);
-#    elif defined(JS_CODEGEN_MIPS64) || defined(JS_CODEGEN_LOONG64)
+#    elif defined(JS_CODEGEN_MIPS64) || defined(JS_CODEGEN_LOONG64) || \
+        defined(JS_CODEGEN_RISCV64)
     Label ok;
     ScratchRegisterScope scratch(asMasm());
     move32SignExtendToPtr(r, scratch);