diff options
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index b3c55170927..fdb8995534a 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -7737,11 +7737,12 @@ loop_iv_add_mult_emit_before (const struct loop *loop, rtx b, rtx m, rtx a, update_reg_last_use (b, before_insn); update_reg_last_use (m, before_insn); - loop_insn_emit_before (loop, before_bb, before_insn, seq); - /* It is possible that the expansion created lots of new registers. - Iterate over the sequence we just created and record them all. */ + Iterate over the sequence we just created and record them all. We + must do this before inserting the sequence. */ loop_regs_update (loop, seq); + + loop_insn_emit_before (loop, before_bb, before_insn, seq); } @@ -7764,11 +7765,12 @@ loop_iv_add_mult_sink (const struct loop *loop, rtx b, rtx m, rtx a, rtx reg) update_reg_last_use (b, loop->sink); update_reg_last_use (m, loop->sink); - loop_insn_sink (loop, seq); - /* It is possible that the expansion created lots of new registers. - Iterate over the sequence we just created and record them all. */ + Iterate over the sequence we just created and record them all. We + must do this before inserting the sequence. */ loop_regs_update (loop, seq); + + loop_insn_sink (loop, seq); } @@ -7784,11 +7786,12 @@ loop_iv_add_mult_hoist (const struct loop *loop, rtx b, rtx m, rtx a, rtx reg) /* Use copy_rtx to prevent unexpected sharing of these rtx. */ seq = gen_add_mult (copy_rtx (b), copy_rtx (m), copy_rtx (a), reg); - loop_insn_hoist (loop, seq); - /* It is possible that the expansion created lots of new registers. - Iterate over the sequence we just created and record them all. */ + Iterate over the sequence we just created and record them all. We + must do this before inserting the sequence. */ loop_regs_update (loop, seq); + + loop_insn_hoist (loop, seq); } |
