38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
--- emit-rtl.c.orig Thu Sep 14 13:09:30 1995
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+++ emit-rtl.c Mon Mar 20 13:29:11 2000
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@@ -159,6 +159,10 @@
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rtx static_chain_incoming_rtx; /* (REG:Pmode STATIC_CHAIN_INCOMING_REGNUM) */
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rtx pic_offset_table_rtx; /* (REG:Pmode PIC_OFFSET_TABLE_REGNUM) */
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+/* This is used to implement __builtin_return_address for some machines.
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+ See for instance the MIPS port. */
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+rtx return_address_pointer_rtx; /* (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM) */
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+
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rtx virtual_incoming_args_rtx; /* (REG:Pmode VIRTUAL_INCOMING_ARGS_REGNUM) */
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rtx virtual_stack_vars_rtx; /* (REG:Pmode VIRTUAL_STACK_VARS_REGNUM) */
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rtx virtual_stack_dynamic_rtx; /* (REG:Pmode VIRTUAL_STACK_DYNAMIC_REGNUM) */
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@@ -345,6 +349,11 @@
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&& ! reload_in_progress)
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return arg_pointer_rtx;
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#endif
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+#ifdef RETURN_ADDRESS_POINTER_REGNUM
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+ if (return_address_pointer_rtx && regno == RETURN_ADDRESS_POINTER_REGNUM
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+ && mode == Pmode && ! reload_in_progress)
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+ return return_address_pointer_rtx;
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+#endif
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if (stack_pointer_rtx && regno == STACK_POINTER_REGNUM && mode == Pmode
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&& ! reload_in_progress)
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return stack_pointer_rtx;
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@@ -3391,6 +3400,11 @@
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arg_pointer_rtx = stack_pointer_rtx;
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else
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arg_pointer_rtx = gen_rtx (REG, Pmode, ARG_POINTER_REGNUM);
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+
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+#ifdef RETURN_ADDRESS_POINTER_REGNUM
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+ return_address_pointer_rtx = gen_rtx (REG, Pmode,
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+ RETURN_ADDRESS_POINTER_REGNUM);
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+#endif
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/* Create the virtual registers. Do so here since the following objects
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might reference them. */
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