Hi Guys,
I am applying the patch below to fix the REGNO_REG_CLASS macro for
the MCore backend so that it will not try to index beyond the end of
the regno_reg_class array. This was causing a segmentation fault
whilst building the MCore toolchain.
Cheers
Nick
gcc/ChangeLog
2011-04-27 Nick Clifton <ni...@redhat.com>
* config/mcore/mcore.h (REGNO_REG_CLASS): Do not index beyond the
end of the regno_reg_class array.
Index: gcc/config/mcore/mcore.h
===================================================================
--- gcc/config/mcore/mcore.h (revision 173012)
+++ gcc/config/mcore/mcore.h (working copy)
@@ -357,7 +357,7 @@
or could index an array. */
extern const enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];
-#define REGNO_REG_CLASS(REGNO) regno_reg_class[REGNO]
+#define REGNO_REG_CLASS(REGNO) ((REGNO) < FIRST_PSEUDO_REGISTER ?
regno_reg_class[REGNO] : NO_REGS)
/* When this hook returns true for MODE, the compiler allows
registers explicitly used in the rtl to be used as spill registers
