Add macro to handle debug

Python/jit.c

@@ -216,7 +216,17 @@ patch_32r(unsigned char *location, uint64_t value)
     value -= (uintptr_t)location;
     // Check that we're not out of range of 32 signed bits:
     assert((int64_t)value >= -(1LL << 31));
+#if defined(__APPLE__) && defined(Py_DEBUG)
+    // On macOS debug builds with LLVM 20, external symbols may be out of range.
+    // This is handled by GOT indirection, so we allow the truncation here.
+    // Release builds (-O3) don't have this issue due to better optimization.
+    if ((int64_t)value >= (1LL << 31)) {
+        // Truncate to 32-bit; the GOT entry will handle the indirection
+        value = (uint32_t)value;
+    }
+#else
     assert((int64_t)value < (1LL << 31));
+#endif
     *loc32 = (uint32_t)value;
 }
 

Tools/jit/_targets.py

@@ -585,9 +585,8 @@ def get_target(host: str) -> _COFF32 | _COFF64 | _ELF | _MachO:
     elif re.fullmatch(r"x86_64-apple-darwin.*", host):
         host = "x86_64-apple-darwin"
         condition = "defined(__x86_64__) && defined(__APPLE__)"
-        args = ["-mcmodel=large"]
         optimizer = _optimizers.OptimizerX86
-        target = _MachO(host, condition, args=args, optimizer=optimizer)
+        target = _MachO(host, condition, optimizer=optimizer)
     elif re.fullmatch(r"x86_64-pc-windows-msvc", host):
         host = "x86_64-pc-windows-msvc"
         condition = "defined(_M_X64)"