From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c (limited to 'gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c') diff --git a/gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c new file mode 100644 index 000000000..2c1282d9d --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-3.c @@ -0,0 +1,23 @@ +/* Prefetching used to prefer nonsensical unroll factor of 5 in this testcase. */ + +/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ +/* { dg-require-effective-target ilp32 } */ +/* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -msse2 -mfpmath=sse -fdump-tree-aprefetch-details" } */ + +#define N 1000000 + +double a[N]; + +double test(void) +{ + unsigned i; + double sum = 0; + + for (i = 0; i < N; i += 2) + sum += (a[i] * a[i+1]); + + return sum; +} + +/* { dg-final { scan-tree-dump-times "unroll factor 4" 1 "aprefetch" } } */ +/* { dg-final { cleanup-tree-dump "aprefetch" } } */ -- cgit v1.2.3