+2000-04-17 Richard Henderson <rth@cygnus.com>
+
+ * bb-reorder.c (fixup_reorder_chain): Don't look up new block again.
+ (reorder_basic_blocks): If no epilogue in rtl, force last block last.
+
2000-04-17 Mark Mitchell <mark@codesourcery.com>
* function.c (expand_function_start): Use hard_function_value to
(ASM_OUTPUT_ADDR_VEC_ELT, ASM_OUTPUT_ADDR_DIFF_ELT): Remove page check,
since vector in in the data CSECT.
(ASM_OUTPUT_REG_POP, ASM_OUTPUT_REG_PUSH): Restore to correct operation.
- * i370.md (Many patterns): Put the length in the XL directives.
+ * i370.md (Many patterns): Put the length in the XL directives.
(movdi): Put back STM and MVC in definition.
(floatsidf2): Correct TARGET_ELF_ABI pattern and add back the LE370
pattern using the TCA.
BASIC_BLOCK (nb->index)->local_set = 0;
nb->aux = xcalloc (1, sizeof (struct reorder_block_def));
- REORDER_BLOCK_INDEX (BASIC_BLOCK (n_basic_blocks - 1))
- = REORDER_BLOCK_INDEX (bbi) + 1;
+ REORDER_BLOCK_INDEX (nb) = REORDER_BLOCK_INDEX (bbi) + 1;
/* Relink to new block. */
nb->succ = bbi->succ;
nb->succ->src = nb;
REORDER_BLOCK_EFF_HEAD (bbi) = NEXT_INSN (prev_eff_end);
}
}
+
+ /* If we've not got epilogue in RTL, we must fallthru to the exit.
+ Force the last block to be at the end. */
+ /* ??? Some ABIs (e.g. MIPS) require the return insn to be at the
+ end of the function for stack unwinding purposes. */
+
+#ifndef HAVE_epilogue
+#define HAVE_epilogue 0
+#endif
+
+ if (! HAVE_epilogue)
+ {
+ basic_block last = BASIC_BLOCK (n_basic_blocks - 1);
+ REORDER_BLOCK_INDEX (last) = n_basic_blocks - 1;
+ REORDER_BLOCK_FLAGS (last) |= REORDER_BLOCK_VISITED;
+ }
make_reorder_chain (BASIC_BLOCK (0));