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| author | Vladimir Makarov <vmakarov@redhat.com> | 2018-12-18 21:20:16 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2018-12-18 21:20:16 +0000 |
| commit | 003cd04c4b2a601f232331a48d9fc3c908905a21 (patch) | |
| tree | dec7fd5197a2320ee8371a37e2237f351993b1b0 /gcc | |
| parent | dc5b05a07544bbab9e309a45ebcb350a37b69103 (diff) | |
| download | gcc-003cd04c4b2a601f232331a48d9fc3c908905a21.zip gcc-003cd04c4b2a601f232331a48d9fc3c908905a21.tar.gz gcc-003cd04c4b2a601f232331a48d9fc3c908905a21.tar.bz2 | |
re PR rtl-optimization/87759 (ICE in lra_assign, at lra-assigns.c:1624, or ICE: Maximum number of LRA assignment passes is achieved (30), or compile-time hog)
2018-12-18 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87759
* lra-assigns.c (lra_split_hard_reg_for): Recalculate
non_reload_pseudos.
2018-12-18 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87759
* gcc.target/i386/pr87759.c: New.
From-SVN: r267244
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/lra-assigns.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr87759.c | 39 |
4 files changed, 55 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a4051f7..e9f5baa 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-12-18 Vladimir Makarov <vmakarov@redhat.com> + + PR rtl-optimization/87759 + * lra-assigns.c (lra_split_hard_reg_for): Recalculate + non_reload_pseudos. + 2018-12-18 Jakub Jelinek <jakub@redhat.com> PR target/88464 diff --git a/gcc/lra-assigns.c b/gcc/lra-assigns.c index 6b9d3ae..c43feda 100644 --- a/gcc/lra-assigns.c +++ b/gcc/lra-assigns.c @@ -1758,6 +1758,10 @@ lra_split_hard_reg_for (void) "\n****** Splitting a hard reg after assignment #%d: ******\n\n", lra_assignment_iter); bitmap_initialize (&failed_reload_pseudos, ®_obstack); + bitmap_initialize (&non_reload_pseudos, ®_obstack); + bitmap_ior (&non_reload_pseudos, &lra_inheritance_pseudos, &lra_split_regs); + bitmap_ior_into (&non_reload_pseudos, &lra_subreg_reload_pseudos); + bitmap_ior_into (&non_reload_pseudos, &lra_optional_reload_pseudos); for (i = lra_constraint_new_regno_start; i < max_regno; i++) if (reg_renumber[i] < 0 && lra_reg_info[i].nrefs != 0 && (rclass = lra_get_allocno_class (i)) != NO_REGS @@ -1772,6 +1776,7 @@ lra_split_hard_reg_for (void) } bitmap_set_bit (&failed_reload_pseudos, i); } + bitmap_clear (&non_reload_pseudos); bitmap_initialize (&failed_reload_insns, ®_obstack); EXECUTE_IF_SET_IN_BITMAP (&failed_reload_pseudos, 0, u, bi) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e8a5868..d1eab57 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-12-18 Vladimir Makarov <vmakarov@redhat.com> + + PR rtl-optimization/87759 + * gcc.target/i386/pr87759.c: New. + 2018-12-18 Jakub Jelinek <jakub@redhat.com> PR target/88464 diff --git a/gcc/testsuite/gcc.target/i386/pr87759.c b/gcc/testsuite/gcc.target/i386/pr87759.c new file mode 100644 index 0000000..253d827 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr87759.c @@ -0,0 +1,39 @@ +/* PR rtl-optimization/87759 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -w -fschedule-insns -fselective-scheduling -ftrapv -fno-dce -fno-expensive-optimizations -fno-ipa-ra -fno-tree-dce -fno-tree-ter" } */ + +int cc; + +void +rc (__int128 *oi) +{ + __int128 qz = (__int128)2 << cc; + + if (qz != 0) + { + if (cc != 0) + { + __int128 zp = 1; + + for (;;) + { + unsigned __int128 *ar = &cc; + int y5; + + if (oi != 0) + { + y3: + zp = *oi + *ar; + } + + y5 = (cc + 1) == ((*ar /= *oi) << ((zp >>= 128) / cc)); + qz += !!y5 ? 1 : qz == (*ar ^ zp + 1); + ++*oi; + } + } + else + ++qz; + } + + goto y3; +} |