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re PR tree-optimization/24627 (xntp miscompiled)

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PR 24627
	* tree-ssa-dce.c (pass_dce, pass_dce_loop, pass_cd_dce): Use
	TODO_update_ssa instead of TODO_update_ssa_no_phi.

testsuite/

	PR 24627
	* gcc.dg/tree-ssa/pr24627.c: New test.

From-SVN: r106502
This commit is contained in:
Diego Novillo 2005-11-04 19:56:28 +00:00 committed by Diego Novillo
parent 47ae9e4ca3
commit 8b1062b24b
4 changed files with 80 additions and 3 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2005-11-03 Diego Novillo <dnovillo@redhat.com>
PR 24627
* tree-ssa-dce.c (pass_dce, pass_dce_loop, pass_cd_dce): Use
TODO_update_ssa instead of TODO_update_ssa_no_phi.
2005-11-04 Sebastian Pop <pop@cri.ensmp.fr>
PR/18595

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2005-11-04 Diego Novillo <dnovillo@redhat.com>
PR 24627
* gcc.dg/tree-ssa/pr24627.c: New test.
2005-11-04 Paul Brook <paul@codesourcery.com>
* gcc.dg/tls/opt-10.c: New test.

66
gcc/testsuite/gcc.dg/tree-ssa/pr24627.c Normal file
View File

@ -0,0 +1,66 @@
/* { dg-do run } */
/* { dg-options "-O" } */
extern void abort (void);
typedef unsigned int u_int32;
typedef struct {
union {u_int32 Xl_ui;} Ul_i;
union {u_int32 Xl_uf;} Ul_f;
} l_fp;
void
dolfptoa (short ndec)
{
l_fp work, ftmp;
work.Ul_i.Xl_ui = 0;
work.Ul_f.Xl_uf = 0x535f3d8;
while (ndec > 0)
{
u_int32 lo_tmp;
u_int32 hi_tmp;
ndec--;
work.Ul_i.Xl_ui = 0;
work.Ul_i.Xl_ui <<= 1;
if ((work.Ul_f.Xl_uf) & 0x80000000)
(work.Ul_i.Xl_ui) |= 0x1;
(work.Ul_f.Xl_uf) <<= 1;
ftmp = work;
(work.Ul_i.Xl_ui) <<= 1;
if ((work.Ul_f.Xl_uf) & 0x80000000)
(work.Ul_i.Xl_ui) |= 0x1;
(work.Ul_f.Xl_uf) <<= 1;
(work.Ul_i.Xl_ui) <<= 1;
if ((work.Ul_f.Xl_uf) & 0x80000000)
(work.Ul_i.Xl_ui) |= 0x1;
(work.Ul_f.Xl_uf) <<= 1;
lo_tmp = ((work.Ul_f.Xl_uf) & 0xffff) + ((ftmp.Ul_f.Xl_uf) & 0xffff);
hi_tmp = (((work.Ul_f.Xl_uf) >> 16) & 0xffff)
+ (((ftmp.Ul_f.Xl_uf) >> 16) & 0xffff);
if (lo_tmp & 0x10000)
hi_tmp++;
(work.Ul_f.Xl_uf) = ((hi_tmp & 0xffff) << 16) | (lo_tmp & 0xffff);
(work.Ul_i.Xl_ui) += (ftmp.Ul_i.Xl_ui);
if (hi_tmp & 0x10000)
(work.Ul_i.Xl_ui)++;
if (!(work.Ul_i.Xl_ui < 10))
abort ();
}
}
int main()
{
dolfptoa(6);
return 0;
}

6
gcc/tree-ssa-dce.c
View File

@ -977,7 +977,7 @@ struct tree_opt_pass pass_dce =
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func
| TODO_update_ssa_no_phi
| TODO_update_ssa
| TODO_cleanup_cfg
| TODO_ggc_collect
| TODO_verify_ssa, /* todo_flags_finish */
@ -998,7 +998,7 @@ struct tree_opt_pass pass_dce_loop =
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func
| TODO_update_ssa_no_phi
| TODO_update_ssa
| TODO_cleanup_cfg
| TODO_verify_ssa, /* todo_flags_finish */
0 /* letter */
@ -1018,7 +1018,7 @@ struct tree_opt_pass pass_cd_dce =
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func
| TODO_update_ssa_no_phi
| TODO_update_ssa
| TODO_cleanup_cfg
| TODO_ggc_collect
| TODO_verify_ssa