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re PR rtl-optimization/61278 (ICE with LTO (lto-wrapper failed) on x86_64-linux-gnu in 64-bit mode)

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ChangeLog:
2014-05-26  Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	PR rtl-optimization/61278
	* shrink-wrap.c (move_insn_for_shrink_wrap): Check df_live.

testsuite/ChangeLog:
2014-05-26  Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	* gcc.dg/lto/pr61278_0.c: New test.
	* gcc.dg/lto/pr61278_1.c: New test.

From-SVN: r210922
This commit is contained in:
Zhenqiang Chen 2014-05-26 06:40:57 +00:00 committed by Zhenqiang Chen
parent 88f32f0f92
commit d29d688acb
5 changed files with 60 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,4 +1,8 @@
ChangeLog:
2014-05-26 Zhenqiang Chen <zhenqiang.chen@linaro.org>
PR rtl-optimization/61278
* shrink-wrap.c (move_insn_for_shrink_wrap): Check df_live.
2014-05-26 Zhenqiang Chen <zhenqiang.chen@linaro.org>
PR rtl-optimization/61220

7
gcc/shrink-wrap.c
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@ -213,8 +213,15 @@ move_insn_for_shrink_wrap (basic_block bb, rtx insn,
if (EDGE_COUNT (bb->succs) == 1)
return false;
/* If DF_LIVE doesn't exist, i.e. at -O1, just give up. */
if (!df_live)
return false;
next_block = split_edge (live_edge);
/* We create a new basic block. Call df_grow_bb_info to make sure
all data structures are allocated. */
df_grow_bb_info (df_live);
bitmap_copy (df_get_live_in (next_block), df_get_live_out (bb));
df_set_bb_dirty (next_block);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-05-26 Zhenqiang Chen <zhenqiang.chen@linaro.org>
* gcc.dg/lto/pr61278_0.c: New test.
* gcc.dg/lto/pr61278_1.c: New test.
2014-05-26 Zhenqiang Chen <zhenqiang.chen@linaro.org>
* gcc.dg/pr61220.c: New test.

30
gcc/testsuite/gcc.dg/lto/pr61278_0.c Normal file
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@ -0,0 +1,30 @@
/* { dg-lto-do link } */
/* { dg-lto-options { { -flto -O0 } } } */
/* { dg-extra-ld-options " -flto -O1 " } */
static unsigned int
fn1 (int p1, int p2)
{
return 0;
}
char a, b, c;
char
foo (char *p)
{
int i;
for (b = 1 ; b > 0; b++)
{
for (i = 0; i < 2; i++)
;
for (a = 1; a > 0; a++)
{
char d[1] = { 0 };
if (*p)
break;
c ^= fn1 (fn1 (fn1 (0, 0), 0), 0);
}
}
return 0;
}

13
gcc/testsuite/gcc.dg/lto/pr61278_1.c Normal file
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@ -0,0 +1,13 @@
/* { dg-lto-do link } */
/* { dg-lto-options { { -flto -O1 } } } */
extern char foo (char *);
char d;
int
main ()
{
foo (&d);
return 0;
}