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re PR rtl-optimization/80903 (ICE: internal consistency failure (error: invalid rtl sharing found in the insn))

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PR rtl-optimization/80903
	* loop-doloop.c (add_test): Unshare sequence.

	* gcc.dg/pr80903.c: New test.

From-SVN: r248815
This commit is contained in:
Jakub Jelinek 2017-06-02 10:07:15 +02:00 • committed by Jakub Jelinek
parent aad16012aa
commit 74b4885d94
4 changed files with 43 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-06-02 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/80903
* loop-doloop.c (add_test): Unshare sequence.
2017-06-02 Bernd Edlinger <bernd.edlinger@hotmail.de>
* doc/invoke.texi: Document the -Wsizeof-pointer-div warning.

1
gcc/loop-doloop.c
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@ -367,6 +367,7 @@ add_test (rtx cond, edge *e, basic_block dest)
}
seq = get_insns ();
unshare_all_rtl_in_chain (seq);
end_sequence ();
/* There always is at least the jump insn in the sequence. */

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2017-06-02 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/80903
* gcc.dg/pr80903.c: New test.
PR fortran/80918
* gfortran.dg/gomp/pr80918.f90: New test.

34
gcc/testsuite/gcc.dg/pr80903.c Normal file
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@ -0,0 +1,34 @@
/* PR rtl-optimization/80903 */
/* { dg-do compile } */
/* { dg-options "-O3 -funroll-loops" } */
short int a;
void
foo (int x, short int y, short int z)
{
if (y != 0)
{
const short int b = 37;
y = 0;
while (y < b)
{
while (y < b)
{
lab:
++y;
}
for (y = 0; y < b - 1; ++y)
;
if (z != 0)
{
--a;
y *= a;
}
z = x;
}
x = 0;
}
goto lab;
}