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| author | Eric Botcazou <ebotcazou@adacore.com> | 2011-10-16 13:14:34 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2011-10-16 13:14:34 +0000 |
| commit | bd8c998f35b97b8b855ed9bbe09ed03b237c953c (patch) | |
| tree | f9185be4c5f47e914f4a4470e7ebd7f58c9b2e33 | |
| parent | 71c92d177874fee7e5da738a30523edb83cf29c9 (diff) | |
| download | gcc-bd8c998f35b97b8b855ed9bbe09ed03b237c953c.zip gcc-bd8c998f35b97b8b855ed9bbe09ed03b237c953c.tar.gz gcc-bd8c998f35b97b8b855ed9bbe09ed03b237c953c.tar.bz2 | |
re PR rtl-optimization/50615 (ICE: in distribute_notes, at combine.c:13282 with -O --param max-cse-insns=1)
PR rtl-optimization/50615
* combine.c (distribute_notes) <REG_ARGS_SIZE>: Skip if I3 is a no-op.
From-SVN: r180058
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 15 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vla-23.c | 17 |
4 files changed, 34 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8c5017d..766f12d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-10-16 Eric Botcazou <ebotcazou@adacore.com> + + PR rtl-optimization/50615 + * combine.c (distribute_notes) <REG_ARGS_SIZE>: Skip if I3 is a no-op. + 2011-10-16 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/50596 diff --git a/gcc/combine.c b/gcc/combine.c index 6c3b17c..2941114 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -13274,13 +13274,14 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2, rtx elim_i2, break; case REG_ARGS_SIZE: - { - /* ??? How to distribute between i3-i1. Assume i3 contains the - entire adjustment. Assert i3 contains at least some adjust. */ - int old_size, args_size = INTVAL (XEXP (note, 0)); - old_size = fixup_args_size_notes (PREV_INSN (i3), i3, args_size); - gcc_assert (old_size != args_size); - } + /* ??? How to distribute between i3-i1. Assume i3 contains the + entire adjustment. Assert i3 contains at least some adjust. */ + if (!noop_move_p (i3)) + { + int old_size, args_size = INTVAL (XEXP (note, 0)); + old_size = fixup_args_size_notes (PREV_INSN (i3), i3, args_size); + gcc_assert (old_size != args_size); + } break; case REG_NORETURN: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 653453a..d10e82b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2011-10-16 Eric Botcazou <ebotcazou@adacore.com> + + * gcc.dg/vla-23.c: New test. + 2011-10-16 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/50596 diff --git a/gcc/testsuite/gcc.dg/vla-23.c b/gcc/testsuite/gcc.dg/vla-23.c new file mode 100644 index 0000000..47be412 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vla-23.c @@ -0,0 +1,17 @@ +/* PR rtl-optimization/50615 */ +/* Testcase by Zdenek Sojka <zsojka@seznam.cz> */ + +/* { dg-do compile } */ +/* { dg-options "-O --param max-cse-insns=1" } */ + +int +foo (int a) +{ + if (!a) + return 1; + + { + int s[a]; + return 0; + } +} |