From 02de68e16b0548f4ac9599cdd5dcd0b9703f02fb Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 8 Jul 2010 13:40:24 +0000 Subject: [PATCH] Add gcc.dg/pr44838.c. 2010-07-08 H.J. Lu PR rtl-optimization/44838 * gcc.dg/pr44838.c: New. From-SVN: r161953 --- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.dg/pr44838.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/pr44838.c diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index eb8d5f1bc21..ba1123922de 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-07-08 H.J. Lu + + PR rtl-optimization/44838 + * gcc.dg/pr44838.c: New. + 2010-07-08 Richard Guenther PR tree-optimization/44831 diff --git a/gcc/testsuite/gcc.dg/pr44838.c b/gcc/testsuite/gcc.dg/pr44838.c new file mode 100644 index 00000000000..61608ed0b71 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr44838.c @@ -0,0 +1,33 @@ +/* PR rtl-optimization/44838 */ +/* { dg-do run } */ +/* { dg-options "-O2 -funroll-loops" } */ + +extern void abort (); + +void +foo (int *a, int n) +{ + int *lasta = a + n; + for (; a != lasta; a++) + { + *a *= 2; + a[1] = a[-1] + a[-2]; + } +} + +int a[16]; +int ref[16] = { 0, 1, 4, 2, 10, 12, 24, 44, + 72, 136, 232, 416, 736, 1296, 2304, 2032 }; + +int +main () +{ + int i; + for (i = 0; i < 16; i++) + a[i] = i; + foo (a + 2, 16 - 3); + for (i = 0; i < 16; i++) + if (ref[i] != a[i]) + abort (); + return 0; +} -- 2.30.2