OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR target/46546 (ix86_pad_returns may leave BB_END (bb) pointing to deleted insn)

Browse Source 
PR target/46546
	* config/i386/i386.c (ix86_reorg): Call compute_bb_for_insn.

From-SVN: r166921
This commit is contained in:
Uros Bizjak 2010-11-19 00:46:13 +01:00 committed by Uros Bizjak
parent cd400280c4
commit 77841d7717
2 changed files with 13 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2010-11-19 Uros Bizjak <ubizjak@gmail.com>
PR target/46546
* config/i386/i386.c (ix86_reorg): Call compute_bb_for_insn.
2010-11-18 Richard Henderson <rth@redhat.com>
PR middle-end/46515

12
gcc/config/i386/i386.c
View File

@ -29633,8 +29633,8 @@ ix86_pad_returns (void)
&& ((JUMP_P (prev) && any_condjump_p (prev))
|| CALL_P (prev)))
replace = true;
/* Empty functions get branch mispredict even when the jump destination
is not visible to us. */
/* Empty functions get branch mispredict even when
the jump destination is not visible to us. */
if (!prev && !optimize_function_for_size_p (cfun))
replace = true;
}
@ -29752,8 +29752,8 @@ ix86_pad_short_function (void)
if (!insn)
insn = ret;
/* Two NOPs are counted as one instruction. */
insn_count = 2 * (4 - insn_count);
/* Two NOPs count as one instruction. */
insn_count = 2 * (4 - insn_count);
emit_insn_before (gen_nops (GEN_INT (insn_count)), insn);
}
}
@ -29765,6 +29765,10 @@ ix86_pad_short_function (void)
static void
ix86_reorg (void)
{
/* We are freeing block_for_insn in the toplev to keep compatibility
with old MDEP_REORGS that are not CFG based. Recompute it now. */
compute_bb_for_insn ();
if (optimize && optimize_function_for_speed_p (cfun))
{
if (TARGET_PAD_SHORT_FUNCTION)