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-rw-r--r--gcc/defaults.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/defaults.h b/gcc/defaults.h
index 91962d4..2a7c567 100644
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -450,4 +450,11 @@ You Lose! You must define PREFERRED_DEBUGGING_TYPE!
#define FUNCTION_ARG_REG_LITTLE_ENDIAN 0
#endif
+/* Determine the register class for registers suitable to be the base
+ address register in a MEM. Allow the choice to be dependent upon
+ the mode of the memory access. */
+#ifndef MODE_BASE_REG_CLASS
+#define MODE_BASE_REG_CLASS(MODE) BASE_REG_CLASS
+#endif
+
#endif /* ! GCC_DEFAULTS_H */