diff options
| author | Maciej W. Rozycki <macro@linux-mips.org> | 2020-12-05 18:26:24 +0000 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@linux-mips.org> | 2020-12-05 18:26:24 +0000 |
| commit | a2bd4e52cf710924107b08daaf3d09d7798c8022 (patch) | |
| tree | 81b3e6a6362ec4d8f335f321493c0e1daad39c08 /gcc | |
| parent | 94f336768e199bc268c30446a63b49a53b02f648 (diff) | |
| download | gcc-a2bd4e52cf710924107b08daaf3d09d7798c8022.zip gcc-a2bd4e52cf710924107b08daaf3d09d7798c8022.tar.gz gcc-a2bd4e52cf710924107b08daaf3d09d7798c8022.tar.bz2 | |
loop-iv: Add missing calls to `onlyjump_p'
Ignore jumps that have side effects in loop processing as pasting the
body of a loop multiple times within is semantically equivalent to jump
deletion (between the iterations unrolled) even if we do not physically
delete the jump RTL insn.
gcc/
* loop-iv.c (simplify_using_initial_values): Only process jumps
that match `onlyjump_p'.
(check_simple_exit): Likewise.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/loop-iv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index 9f266e2..9d401d2 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -1936,7 +1936,7 @@ simplify_using_initial_values (class loop *loop, enum rtx_code op, rtx *expr) while (1) { insn = BB_END (e->src); - if (any_condjump_p (insn)) + if (any_condjump_p (insn) && onlyjump_p (insn)) { rtx cond = get_condition (BB_END (e->src), NULL, false, true); @@ -2887,7 +2887,7 @@ check_simple_exit (class loop *loop, edge e, class niter_desc *desc) return; /* It must end in a simple conditional jump. */ - if (!any_condjump_p (BB_END (exit_bb))) + if (!any_condjump_p (BB_END (exit_bb)) || !onlyjump_p (BB_END (exit_bb))) return; ein = EDGE_SUCC (exit_bb, 0); |