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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/postreload.c | |
| 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/postreload.c')
| -rw-r--r-- | gcc/postreload.c | 6 |
1 files changed, 6 insertions, 0 deletions
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) |