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| author | Jakub Jelinek <jakub@redhat.com> | 2012-01-11 23:59:12 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-01-11 23:59:12 +0100 |
| commit | 319638ed5cd91621c8164eca42bd96bbd8139f02 (patch) | |
| tree | fbdc23d46078139f7cb8428d4b8b9ecfefb8f37b /gcc/expr.c | |
| parent | 11d8e1a4cbf1a47eb3fe0a673cff6b820ffdda2c (diff) | |
| download | gcc-319638ed5cd91621c8164eca42bd96bbd8139f02.zip gcc-319638ed5cd91621c8164eca42bd96bbd8139f02.tar.gz gcc-319638ed5cd91621c8164eca42bd96bbd8139f02.tar.bz2 | |
re PR bootstrap/51796 (internal compiler error: in distribute_notes, at combine.c:13285 for libgomp/alloc.c on m68k-linux)
PR bootstrap/51796
* combine.c (distribute_notes): If i3 is a noreturn call,
allow old_size to be equal to args_size and make sure the
noreturn call gets REG_ARGS_SIZE note.
* expr.c (fixup_args_size_notes): Put REG_ARGS_SIZE notes
on noreturn calls even when the delta is 0.
* gcc.dg/pr51796.c: New test.
From-SVN: r183111
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -1,7 +1,7 @@ /* Convert tree expression to rtl instructions, for GNU compiler. Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 - Free Software Foundation, Inc. + 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, + 2012 Free Software Foundation, Inc. This file is part of GCC. @@ -3642,9 +3642,11 @@ mem_autoinc_base (rtx mem) (1) One or more auto-inc style memory references (aka pushes), (2) One or more addition/subtraction with the SP as destination, (3) A single move insn with the SP as destination, - (4) A call_pop insn. + (4) A call_pop insn, + (5) Noreturn call insns if !ACCUMULATE_OUTGOING_ARGS. - Insns in the sequence that do not modify the SP are ignored. + Insns in the sequence that do not modify the SP are ignored, + except for noreturn calls. The return value is the amount of adjustment that can be trivially verified, via immediate operand or auto-inc. If the adjustment @@ -3789,7 +3791,12 @@ fixup_args_size_notes (rtx prev, rtx last, int end_args_size) this_delta = find_args_size_adjust (insn); if (this_delta == 0) - continue; + { + if (!CALL_P (insn) + || ACCUMULATE_OUTGOING_ARGS + || find_reg_note (insn, REG_NORETURN, NULL_RTX) == NULL_RTX) + continue; + } gcc_assert (!saw_unknown); if (this_delta == HOST_WIDE_INT_MIN) |