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| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2003-03-08 10:47:28 +0100 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2003-03-08 09:47:28 +0000 |
| commit | 72b8d451f1b0c3bef4b3afc688ada5d5175d97d0 (patch) | |
| tree | 2049f3fc3ca464bc5ba32b5c28fce7018ba25366 /gcc/loop-unroll.c | |
| parent | 612dc71803c6a8419ad07b13462dd15732d650b4 (diff) | |
| download | gcc-72b8d451f1b0c3bef4b3afc688ada5d5175d97d0.zip gcc-72b8d451f1b0c3bef4b3afc688ada5d5175d97d0.tar.gz gcc-72b8d451f1b0c3bef4b3afc688ada5d5175d97d0.tar.bz2 | |
gcse.c (bypass_block, [...]): Do not create irreducible loops.
* gcse.c (bypass_block, bypass_conditional_jumps): Do not create
irreducible loops.
* loop-unroll.c (unroll_loop_runtime_iterations): Update irreducible
loops info correctly.
From-SVN: r63980
Diffstat (limited to 'gcc/loop-unroll.c')
| -rw-r--r-- | gcc/loop-unroll.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c index 55899a9..e39bdbc 100644 --- a/gcc/loop-unroll.c +++ b/gcc/loop-unroll.c @@ -895,7 +895,8 @@ unroll_loop_runtime_iterations (loops, loop) swtch = loop_split_edge_with (swtch->pred, branch_code, loops); set_immediate_dominator (loops->cfg.dom, preheader, swtch); swtch->succ->probability = REG_BR_PROB_BASE - p; - e = make_edge (swtch, preheader, 0); + e = make_edge (swtch, preheader, + swtch->succ->flags & EDGE_IRREDUCIBLE_LOOP); e->probability = p; } } @@ -925,7 +926,8 @@ unroll_loop_runtime_iterations (loops, loop) swtch = loop_split_edge_with (swtch->succ, branch_code, loops); set_immediate_dominator (loops->cfg.dom, preheader, swtch); swtch->succ->probability = REG_BR_PROB_BASE - p; - e = make_edge (swtch, preheader, 0); + e = make_edge (swtch, preheader, + swtch->succ->flags & EDGE_IRREDUCIBLE_LOOP); e->probability = p; } |