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author | Ben Cheng <bccheng@google.com> | 2014-05-17 17:03:43 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-05-17 17:12:35 -0700 |
commit | 8c493ead6366b552adee796de296936b78f34c5a (patch) | |
tree | 4936e52fb9b84edbcd9293bd321027413d1835bf /gcc-4.9/gcc/loop-init.c | |
parent | 9750bde7e561731ce8a07cdbd0165a688e74a696 (diff) | |
download | toolchain_gcc-8c493ead6366b552adee796de296936b78f34c5a.tar.gz toolchain_gcc-8c493ead6366b552adee796de296936b78f34c5a.tar.bz2 toolchain_gcc-8c493ead6366b552adee796de296936b78f34c5a.zip |
[4.9] Refresh GCC 4.9 to the 20140514 snapshot.
For critical bug fixes including devirtualization and codegen.
Change-Id: I8138d3dc408fc12db5eecb01d2753d39219712f2
Diffstat (limited to 'gcc-4.9/gcc/loop-init.c')
-rw-r--r-- | gcc-4.9/gcc/loop-init.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/gcc-4.9/gcc/loop-init.c b/gcc-4.9/gcc/loop-init.c index 2c2c269b8..4cc561c2e 100644 --- a/gcc-4.9/gcc/loop-init.c +++ b/gcc-4.9/gcc/loop-init.c @@ -94,20 +94,15 @@ loop_optimizer_init (unsigned flags) else { bool recorded_exits = loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS); + bool needs_fixup = loops_state_satisfies_p (LOOPS_NEED_FIXUP); gcc_assert (cfun->curr_properties & PROP_loops); /* Ensure that the dominators are computed, like flow_loops_find does. */ calculate_dominance_info (CDI_DOMINATORS); - if (loops_state_satisfies_p (LOOPS_NEED_FIXUP)) - { - loops_state_clear (~0U); - fix_loop_structure (NULL); - } - #ifdef ENABLE_CHECKING - else + if (!needs_fixup) verify_loop_structure (); #endif @@ -115,6 +110,14 @@ loop_optimizer_init (unsigned flags) if (recorded_exits) release_recorded_exits (); loops_state_clear (~0U); + + if (needs_fixup) + { + /* Apply LOOPS_MAY_HAVE_MULTIPLE_LATCHES early as fix_loop_structure + re-applies flags. */ + loops_state_set (flags & LOOPS_MAY_HAVE_MULTIPLE_LATCHES); + fix_loop_structure (NULL); + } } /* Apply flags to loops. */ |