diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 14 | ||||
| -rw-r--r-- | gcc/emit-rtl.c | 3 | ||||
| -rw-r--r-- | gcc/jump.c | 13 |
3 files changed, 25 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6fb94cd..72902da 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2011-08-03 Alan Modra <amodra@gmail.com> + + PR rtl-optimization/49941 + * jump.c (mark_jump_label): Comment. + (mark_jump_label_1): Set JUMP_LABEL for return jumps. + * emit-rtl.c (copy_rtx_if_shared_1, copy_insn_1): Leave RETURN shared. + (mark_used_flags): Don't mark RETURN. + 2011-08-03 Richard Guenther <rguenther@suse.de> PR tree-optimization/49938 @@ -176,10 +184,10 @@ boolean-typed operands for comparisons. 2011-08-02 Georg-Johann Lay <avr@gjlay.de> - + * config/avr/libgcc.S: Gather related function in the same input section. - (__mulqihi3, __mulqihi3, __divmodqi4, __divmodhi4, __udivmodsi4, + (__mulqihi3, __mulqihi3, __divmodqi4, __divmodhi4, __udivmodsi4, __divmodsi4): Use XCALL/XJMP instead of rcall/rjmp for external references. (__udivmodqi4, __divmodqi4, __udivmodhi4, __divmodhi4, @@ -21337,7 +21345,7 @@ to cselib_lookup. (add_uses): Likewise, also to cselib_subst_to_values. (add_stores): Likewise. - * sched-deps.c (add_insn_mem_dependence): Pass mode to + * sched-deps.c (add_insn_mem_dependence): Pass mode to cselib_subst_to_values. (sched_analyze_1, sched_analyze_2): Likewise. Adjusted. * gcse.c (do_local_cprop): Adjusted. diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index aa743d7..16a1c6c 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -2724,6 +2724,7 @@ repeat: case CODE_LABEL: case PC: case CC0: + case RETURN: case SCRATCH: /* SCRATCH must be shared because they represent distinct values. */ return; @@ -2843,6 +2844,7 @@ repeat: case CODE_LABEL: case PC: case CC0: + case RETURN: return; case DEBUG_INSN: @@ -5261,6 +5263,7 @@ copy_insn_1 (rtx orig) case CODE_LABEL: case PC: case CC0: + case RETURN: return orig; case CLOBBER: if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER) @@ -1,7 +1,7 @@ /* Optimize jump instructions, for GNU compiler. Copyright (C) 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997 - 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 - Free Software Foundation, Inc. + 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, + 2011 Free Software Foundation, Inc. This file is part of GCC. @@ -1039,6 +1039,7 @@ sets_cc0_p (const_rtx x) notes. If INSN is an INSN or a CALL_INSN or non-target operands of a JUMP_INSN, and there is at least one CODE_LABEL referenced in INSN, add a REG_LABEL_OPERAND note containing that label to INSN. + For returnjumps, the JUMP_LABEL will also be set as appropriate. Note that two labels separated by a loop-beginning note must be kept distinct if we have not yet done loop-optimization, @@ -1081,6 +1082,14 @@ mark_jump_label_1 (rtx x, rtx insn, bool in_mem, bool is_target) case CALL: return; + case RETURN: + if (is_target) + { + gcc_assert (JUMP_LABEL (insn) == NULL || JUMP_LABEL (insn) == x); + JUMP_LABEL (insn) = x; + } + return; + case MEM: in_mem = true; break; |