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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2013-07-24 20:12:49 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2013-07-24 21:12:49 +0100 |
| commit | ce4a94223ea08c13ba644b2f8c2dde8a2b1511fb (patch) | |
| tree | c672dee8f414becb468719cea9403139841a25d1 | |
| parent | f1e18725591f12da43d0bb1a6ff93de9ee08b059 (diff) | |
| download | gcc-ce4a94223ea08c13ba644b2f8c2dde8a2b1511fb.zip gcc-ce4a94223ea08c13ba644b2f8c2dde8a2b1511fb.tar.gz gcc-ce4a94223ea08c13ba644b2f8c2dde8a2b1511fb.tar.bz2 | |
re PR rtl-optimization/57968 (MODE_EXIT switches inserted too early)
PR rtl-optimization/57968
* mode-switching.c (create_pre_exit): Allow instructions that
don't set a return register to need a non-exit mode.
From-SVN: r201225
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/mode-switching.c | 15 |
2 files changed, 15 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 11a4830..0277054 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-07-24 Joern Rennecke <joern.rennecke@embecosm.com> + + PR rtl-optimization/57968 + * mode-switching.c (create_pre_exit): Allow instructions that + don't set a return register to need a non-exit mode. + 2013-07-24 Bill Schmidt <wschmidt@vnet.linux.ibm.com> Anton Blanchard <anton@au1.ibm.com> diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c index 70a77d0..8ea8ca3 100644 --- a/gcc/mode-switching.c +++ b/gcc/mode-switching.c @@ -330,12 +330,10 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes) break; } if (!targetm.calls.function_value_regno_p (copy_start)) - { - last_insn = return_copy; - continue; - } - copy_num - = hard_regno_nregs[copy_start][GET_MODE (copy_reg)]; + copy_num = 0; + else + copy_num + = hard_regno_nregs[copy_start][GET_MODE (copy_reg)]; /* If the return register is not likely spilled, - as is the case for floating point on SH4 - then it might @@ -372,6 +370,11 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes) forced_late_switch = 1; break; } + if (copy_num == 0) + { + last_insn = return_copy; + continue; + } if (copy_start >= ret_start && copy_start + copy_num <= ret_end) |