Fix compile error for max with inline const (#5840)

test/test_renderer_failures.py

@@ -2,7 +2,7 @@ import unittest
 from typing import List, cast
 import numpy as np
 from tinygrad.codegen.uops import UOp, UOps
-from tinygrad.device import Buffer, CompileError, Device
+from tinygrad.device import Buffer, Device
 from tinygrad.dtype import PtrDType, DType, dtypes
 from tinygrad.engine.realize import CompiledRunner
 from tinygrad.helpers import dedup, flatten
@@ -36,12 +36,8 @@ class TestCStyleFailures(unittest.TestCase):
     alu = ld.alu(BinaryOps.MAX, UOp.const(dtypes.int, dtypes.min(dtypes.int)))
     store = UOp.store(a, idx, alu)
     # CLANG doesn't use the max function
-    if Device.DEFAULT in ["CLANG"]:
-      ret = _test_uop_result([Tensor([1])], [store])[0]
-      assert ret[0] == 1
-    # call to 'max' is ambiguous
-    else:
-      with self.assertRaises(CompileError): _test_uop_result([Tensor([1])], [store])
+    ret = _test_uop_result([Tensor([1])], [store])[0]
+    self.assertEqual(ret[0], 1)
 
 if __name__ == '__main__':
   unittest.main()

tinygrad/renderer/cstyle.py

@@ -137,6 +137,7 @@ class CStyleLanguage(Renderer):
         elif uop is UOps.ALU:
           # remove parens if ALU types are the same. TODO: can do more here
           if args in {BinaryOps.ADD,BinaryOps.MUL,BinaryOps.XOR}: operands = [strip_parens(r[v]) if v.arg == args else r[v]for v in src]
+          elif args is BinaryOps.MAX: operands = [self.render_cast(r[v], cast(DType, v.dtype)) if v.op is UOps.CONST else r[v] for v in src]
           else: operands = [r[v] for v in src]
           val = self.code_for_op[args](*operands, dtype)
           assert child_count[u] != 0, f"childless ALU op found {u}"