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cfg.c (force_nonfallthru_and_redirect): Handle redirecting to the exit block. 

* cfg.c (force_nonfallthru_and_redirect): Handle redirecting
        to the exit block.
        * Makefile.in (cfg.o): Depend on TM_P_H.

From-SVN: r45696
This commit is contained in:
Richard Henderson 2001-09-19 12:29:10 -07:00 committed by Richard Henderson
parent e2c9fb9bbc
commit 3d9339a9ca
3 changed files with 29 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2001-09-19 Richard Henderson <rth@redhat.com>
* cfg.c (force_nonfallthru_and_redirect): Handle redirecting
to the exit block.
* Makefile.in (cfg.o): Depend on TM_P_H.
2001-09-19 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.c (local_symbol_p): Split out from ...

2
gcc/Makefile.in
View File

@ -1490,7 +1490,7 @@ flow.o : flow.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) $(TREE_H) flags.h insn-config.h
function.h except.h $(EXPR_H) ssa.h $(GGC_H) $(TM_P_H)
cfg.o : cfg.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) flags.h insn-config.h \
$(BASIC_BLOCK_H) $(REGS_H) hard-reg-set.h output.h toplev.h $(RECOG_H) \
function.h except.h $(GGC_H)
function.h except.h $(GGC_H) $(TM_P_H)
cfganal.o : cfganal.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) \
$(BASIC_BLOCK_H) hard-reg-set.h $(GGC_H)
cfgbuild.o : cfgbuild.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) flags.h insn-config.h \

28
gcc/cfg.c
View File

@ -64,9 +64,16 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "function.h"
#include "except.h"
#include "toplev.h"
#include "tm_p.h"
#include "obstack.h"
/* Stubs in case we haven't got a return insn. */
#ifndef HAVE_return
#define HAVE_return 0
#define gen_return() NULL_RTX
#endif
/* The obstack on which the flow graph components are allocated. */
struct obstack flow_obstack;
@ -1249,7 +1256,6 @@ force_nonfallthru_and_redirect (e, target)
basic_block jump_block, new_bb = NULL;
rtx note;
edge new_edge;
rtx label;
if (e->flags & EDGE_ABNORMAL)
abort ();
@ -1290,10 +1296,20 @@ force_nonfallthru_and_redirect (e, target)
else
jump_block = e->src;
e->flags &= ~EDGE_FALLTHRU;
label = block_label (target);
emit_jump_insn_after (gen_jump (label), jump_block->end);
JUMP_LABEL (jump_block->end) = label;
LABEL_NUSES (label)++;
if (target == EXIT_BLOCK_PTR)
{
if (HAVE_return)
emit_jump_insn_after (gen_return (), jump_block->end);
else
abort ();
}
else
{
rtx label = block_label (target);
emit_jump_insn_after (gen_jump (label), jump_block->end);
JUMP_LABEL (jump_block->end) = label;
LABEL_NUSES (label)++;
}
emit_barrier_after (jump_block->end);
redirect_edge_succ_nodup (e, target);