diff options
| author | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-03-08 09:47:28 +0000 |
|---|---|---|
| committer | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-03-08 09:47:28 +0000 |
| commit | a964683a51fa8f998342ebc0f96b6e9f06416c9d (patch) | |
| tree | 2049f3fc3ca464bc5ba32b5c28fce7018ba25366 /gcc/loop-unroll.c | |
| parent | f484a6fe8024ec85309fd29671aa84e76851ef77 (diff) | |
| download | gcc-a964683a51fa8f998342ebc0f96b6e9f06416c9d.tar.gz | |
* gcse.c (bypass_block, bypass_conditional_jumps): Do not create
irreducible loops.
* loop-unroll.c (unroll_loop_runtime_iterations): Update irreducible
loops info correctly.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@63980 138bc75d-0d04-0410-961f-82ee72b054a4
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 55899a97c49..e39bdbcbffb 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; } |