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| author | Jakub Jelinek <jakub@redhat.com> | 2020-04-07 00:27:10 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2020-04-07 00:27:10 +0200 |
| commit | 8662d0593438ecd498ab7591ad0d2810886eb6da (patch) | |
| tree | d872bb10743b0bcf082839852c8a36a7342f1141 /libgo/go/net/hook_unix.go | |
| parent | e0fd9ce257c9033d885d9393bc4dc07da1eab16e (diff) | |
| download | gcc-8662d0593438ecd498ab7591ad0d2810886eb6da.zip gcc-8662d0593438ecd498ab7591ad0d2810886eb6da.tar.gz gcc-8662d0593438ecd498ab7591ad0d2810886eb6da.tar.bz2 | |
cselib: Fix endless cselib loop on (plus:P (reg) (const_int 0))
getopt.c hangs the compiler on h8300-elf with -O2 -g, because the
IL contains addition of constant 0, the first PLUS operand is determined
to have the SP_DERIVED_VALUE_P and the new code in cselib recurses
indefinitely on seeing SP_DERIVED_VALUE_P with locs of
(plus:P SP_DERIVED_VALUE_P (const_int 0)).
Fixed by making sure cselib_subst_to_values canonicalizes it, hashing
already hashes it the same too.
2020-04-06 Jakub Jelinek <jakub@redhat.com>
* cselib.c (cselib_subst_to_values): For SP_DERIVED_VALUE_P
+ const0_rtx return the SP_DERIVED_VALUE_P.
Diffstat (limited to 'libgo/go/net/hook_unix.go')
0 files changed, 0 insertions, 0 deletions