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| author | Mikael Pettersson <mikpe@it.uu.se> | 2011-01-27 05:25:49 +0100 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2011-01-26 21:25:49 -0700 |
| commit | 3b8ff89fa6f454d7b8ae81e3aaf45fa67a866ed2 (patch) | |
| tree | 45ee964249b55af1bfcdd3579663480715ec0f6b /gcc | |
| parent | 434b897293cc5fc065a5ecb1536171520887adc4 (diff) | |
| download | gcc-3b8ff89fa6f454d7b8ae81e3aaf45fa67a866ed2.zip gcc-3b8ff89fa6f454d7b8ae81e3aaf45fa67a866ed2.tar.gz gcc-3b8ff89fa6f454d7b8ae81e3aaf45fa67a866ed2.tar.bz2 | |
re PR rtl-optimization/46856 (internal compiler error in final_scan_insn breaks m68k-linux bootstrap)
PR rtl-optimization/46856
* postreload.c (reload_combine_recognize_const_pattern): Do not
separate cc0 setter and user on cc0 targets.
PR rtl-optimization/46856
* gcc.c-torture/compile/pr46856.c: New test.
From-SVN: r169321
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/postreload.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr46856.c | 26 |
4 files changed, 43 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c0389d4..207e618 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-01-26 Mikael Pettersson <mikpe@it.uu.se> + + PR rtl-optimization/46856 + * postreload.c (reload_combine_recognize_const_pattern): Do not + separate cc0 setter and user on cc0 targets. + 2011-01-26 Nicola Pero <nicola.pero@meta-innovation.com> PR c/43082 diff --git a/gcc/postreload.c b/gcc/postreload.c index 15c22e2..1cb42f6 100644 --- a/gcc/postreload.c +++ b/gcc/postreload.c @@ -1009,6 +1009,12 @@ reload_combine_recognize_const_pattern (rtx insn) && reg_state[clobbered_regno].real_store_ruid >= use_ruid) break; +#ifdef HAVE_cc0 + /* Do not separate cc0 setter and cc0 user on HAVE_cc0 targets. */ + if (must_move_add && sets_cc0_p (PATTERN (use_insn))) + break; +#endif + gcc_assert (reg_state[regno].store_ruid <= use_ruid); /* Avoid moving a use of ADDREG past a point where it is stored. */ if (reg_state[REGNO (addreg)].store_ruid > use_ruid) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 6835c19..4414684 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-01-26 Mikael Pettersson <mikpe@it.uu.se> + + PR rtl-optimization/46856 + * gcc.c-torture/compile/pr46856.c: New test. + 2011-01-26 Nicola Pero <nicola.pero@meta-innovation.com> Andrew Pinski <pinskia@gmail.com> diff --git a/gcc/testsuite/gcc.c-torture/compile/pr46856.c b/gcc/testsuite/gcc.c-torture/compile/pr46856.c new file mode 100644 index 0000000..2ec5e8b --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr46856.c @@ -0,0 +1,26 @@ +struct data { + int prio; + signed char status; +}; + +struct base { + unsigned _num; + struct data vec[10]; +}; + +static struct data *ix(struct base *base, unsigned i) +{ + return &base->vec[i]; +} + +struct heap { + struct base base; +}; + +struct heap *heap; + +void increase_insn_priority (int *fld, int amount) +{ + if (ix(heap ? &heap->base : 0, *fld)->status > 0) + ix(heap ? &heap->base : 0, *fld)->prio += amount; +} |