[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605 Jakub Jelinek jakub at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED CC||jakub at gcc dot gnu.org Resolution|--- |FIXED --- Comment #6 from Jakub Jelinek jakub at gcc dot gnu.org --- Fixed.
[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605 --- Comment #5 from Jakub Jelinek jakub at gcc dot gnu.org --- Author: jakub Date: Mon Dec 30 08:48:25 2013 New Revision: 206242 URL: http://gcc.gnu.org/viewcvs?rev=206242root=gccview=rev Log: PR target/59605 * config/i386/i386.c (ix86_expand_set_or_movmem): Create jump_around_label only if it doesn't exist. * gcc.dg/pr59605.c: New test. Added: trunk/gcc/testsuite/gcc.dg/pr59605.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/testsuite/ChangeLog
[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added CC||hubicka at ucw dot cz Component|middle-end |target Target Milestone|--- |4.9.0 --- Comment #1 from H.J. Lu hjl.tools at gmail dot com --- It is caused by r203937.
[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605
H.J. Lu hjl.tools at gmail dot com changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2013-12-26
Ever confirmed|0 |1
--- Comment #2 from H.J. Lu hjl.tools at gmail dot com ---
ix86_expand_set_or_movmem has
rtx jump_around_label = NULL;
/* Misaligned move sequences handles both prologues and epilogues at once.
Default code generation results in smaller code for large alignments and
also avoids redundant job when sizes are known precisely. */
if (misaligned_prologue_used)
{
/* Misaligned move prologue handled small blocks by itself. */
expand_set_or_movmem_prologue_epilogue_by_misaligned_moves
(dst, src, destreg, srcreg,
move_mode, promoted_val, vec_promoted_val,
count_exp,
jump_around_label,
desired_align align
? MAX (desired_align, epilogue_size_needed) : epilogue_size_needed,
desired_align, align, min_size, dynamic_check, issetmem);
if (!issetmem)
src = change_address (src, BLKmode, srcreg);
...
else
{
rtx hot_label = gen_label_rtx ();
jump_around_label = gen_label_rtx ();
^
When jump_around_label != NULL, the previous jump_around_label
is lost.
emit_cmp_and_jump_insns (count_exp, GEN_INT (dynamic_check - 1),
LEU, 0, GET_MODE (count_exp), 1, hot_label);
predict_jump (REG_BR_PROB_BASE * 90 / 100);
if (issetmem)
set_storage_via_libcall (dst, count_exp, val_exp, false);
else
emit_block_move_via_libcall (dst, src, count_exp, false);
emit_jump (jump_around_label);
emit_label (hot_label);
}
[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605
--- Comment #3 from H.J. Lu hjl.tools at gmail dot com ---
Does this
---
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 0cf0a9d..07f9a86 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -24015,7 +24015,8 @@ ix86_expand_set_or_movmem (rtx dst, rtx src, rtx
count_exp, rtx val_exp,
else
{
rtx hot_label = gen_label_rtx ();
- jump_around_label = gen_label_rtx ();
+ if (jump_around_label == NULL_RTX)
+jump_around_label = gen_label_rtx ();
emit_cmp_and_jump_insns (count_exp, GEN_INT (dynamic_check - 1),
LEU, 0, GET_MODE (count_exp), 1, hot_label);
predict_jump (REG_BR_PROB_BASE * 90 / 100);
---
make any senses?
[Bug target/59605] [4.9 Regression] error: wrong number of branch edges after unconditional jump in bb 11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59605 --- Comment #4 from H.J. Lu hjl.tools at gmail dot com --- A patch is posted at http://gcc.gnu.org/ml/gcc-patches/2013-12/msg01907.html
