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re PR rtl-optimization/9745 ([powerpc] miscompiles libmcrypt (alias problem during loop))

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PR optimization/9745
* loop.c (loop_iv_add_mult_emit_before): Call loop_regs_update before
loop_insn_emit_before.
(loop_iv_add_mult_sink, loop_iv_add_mult_hoist): Likewise.

From-SVN: r69220
This commit is contained in:
James E Wilson 2003-07-10 23:44:40 -07:00 • committed by Jim Wilson
parent c3c3593270
commit ac8354b1da
2 changed files with 19 additions and 9 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-07-10 James E Wilson <wilson@tuliptree.org>
PR optimization/9745
* loop.c (loop_iv_add_mult_emit_before): Call loop_regs_update before
loop_insn_emit_before.
(loop_iv_add_mult_sink, loop_iv_add_mult_hoist): Likewise.
2003-07-10 Zack Weinberg <zack@codesourcery.com>
* cppcharset.c: Fix comment.

21
gcc/loop.c
View file

@ -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);
}