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author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-01 22:22:57 +0000 |
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committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-01 22:22:57 +0000 |
commit | 9e169c4bf36a38689550c059570c57efbf00a6fb (patch) | |
tree | 95e6800f7ac2a49ff7f799d96f04172320e70ac0 /gcc/testsuite/gcc.dg/ipa/pure-const-2.c | |
parent | 6170dfb6edfb7b19f8ae5209b8f948fe0076a4ad (diff) | |
download | gcc-vect256.tar.gz |
Merged trunk at revision 161680 into branch.vect256
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/vect256@161681 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/ipa/pure-const-2.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/ipa/pure-const-2.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/ipa/pure-const-2.c b/gcc/testsuite/gcc.dg/ipa/pure-const-2.c new file mode 100644 index 00000000000..51d779776bc --- /dev/null +++ b/gcc/testsuite/gcc.dg/ipa/pure-const-2.c @@ -0,0 +1,28 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -fdump-tree-local-pure-const1 -fdump-tree-optimized" } */ +static __attribute__ ((noinline, noclone)) +int i_am_pure(char *c, int n) +{ + char *d=__builtin_alloca (n); + int i; + int sum; + for (i=0;i<n;i++) + d[i] = c[i]; + for (i=0;i<n;i++) + d[i] *= c[n-i]; + for (i=0;i<n;i++) + sum+=d[i]; + if (sum) + __builtin_unreachable (); + return sum; +} +char array[11]; +int +main(void) +{ + i_am_pure (array,5); + i_am_pure (array,11); + return 0; +} +/* { dg-final { scan-tree-dump "found to be pure: i_am_pure" "local-pure-const1"} } */ +/* { dg-final { scan-tree-dump-not "i_am_pure" "optimized"} } */ |