diff options
| author | Richard Biener <rguenther@suse.de> | 2014-02-25 08:57:42 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-02-25 08:57:42 +0000 |
| commit | 4094757e4be196c5a0f059e96ad149263c60555e (patch) | |
| tree | f8e6f541c9aa135dc1f98fca81a46054249d5156 /gcc/lto-wrapper.c | |
| parent | adbdb8c76e9757634a688b093f6567d67b8b2498 (diff) | |
| download | gcc-4094757e4be196c5a0f059e96ad149263c60555e.tar.gz | |
re PR lto/60319 (wrong code (that hangs) by LTO at -Os and above on x86_64-linux-gnu)
2014-02-25 Richard Biener <rguenther@suse.de>
PR lto/60319
* lto-opts.c (lto_write_options): Output non-explicit conservative
-fwrapv, -fno-trapv and -fno-strict-overflow.
* lto-wrapper.c (merge_and_complain): Handle merging those options.
(run_gcc): And pass them through.
From-SVN: r208112
Diffstat (limited to 'gcc/lto-wrapper.c')
| -rw-r--r-- | gcc/lto-wrapper.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/gcc/lto-wrapper.c b/gcc/lto-wrapper.c index 5798a81f958..b17945a2ffe 100644 --- a/gcc/lto-wrapper.c +++ b/gcc/lto-wrapper.c @@ -422,6 +422,8 @@ merge_and_complain (struct cl_decoded_option **decoded_options, append_option (decoded_options, decoded_options_count, foption); break; + case OPT_ftrapv: + case OPT_fstrict_overflow: case OPT_ffp_contract_: /* For selected options we can merge conservatively. */ for (j = 0; j < *decoded_options_count; ++j) @@ -429,11 +431,25 @@ merge_and_complain (struct cl_decoded_option **decoded_options, break; if (j == *decoded_options_count) append_option (decoded_options, decoded_options_count, foption); - /* FP_CONTRACT_OFF < FP_CONTRACT_ON < FP_CONTRACT_FAST. */ + /* FP_CONTRACT_OFF < FP_CONTRACT_ON < FP_CONTRACT_FAST, + -fno-trapv < -ftrapv, + -fno-strict-overflow < -fstrict-overflow */ else if (foption->value < (*decoded_options)[j].value) (*decoded_options)[j] = *foption; break; + case OPT_fwrapv: + /* For selected options we can merge conservatively. */ + for (j = 0; j < *decoded_options_count; ++j) + if ((*decoded_options)[j].opt_index == foption->opt_index) + break; + if (j == *decoded_options_count) + append_option (decoded_options, decoded_options_count, foption); + /* -fwrapv > -fno-wrapv. */ + else if (foption->value > (*decoded_options)[j].value) + (*decoded_options)[j] = *foption; + break; + case OPT_freg_struct_return: case OPT_fpcc_struct_return: for (j = 0; j < *decoded_options_count; ++j) @@ -591,6 +607,9 @@ run_gcc (unsigned argc, char *argv[]) case OPT_freg_struct_return: case OPT_fpcc_struct_return: case OPT_ffp_contract_: + case OPT_fwrapv: + case OPT_ftrapv: + case OPT_fstrict_overflow: break; default: |