From b58a3a5f11394c03b15d05e4c4164a04d4bca27a Mon Sep 17 00:00:00 2001 From: vries Date: Fri, 21 Nov 2014 12:26:11 +0000 Subject: [PATCH] Add fgcse-sm test with scan-rtl-dump 2014-11-21 Tom de Vries * gcc.dg/store-motion-fgcse-sm.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@217916 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/testsuite/ChangeLog | 4 ++++ gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c | 32 ++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 26b2c25..1c6cb24 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2014-11-21 Tom de Vries + + * gcc.dg/store-motion-fgcse-sm.c: New test. + 2014-11-21 Evgeny Stupachenko PR target/60451 diff --git a/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c b/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c new file mode 100644 index 0000000..b331a24 --- /dev/null +++ b/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c @@ -0,0 +1,32 @@ +/* { dg-do run } */ +/* { dg-options "-O2 -ftree-pre -fno-tree-loop-im -fgcse-sm -fdump-rtl-store_motion" } */ + +/* tree-pre moves the *sum load out of the loop. ftree-loop-im moves the *sum + store out of the loop, so we disable it, to allow fgcse-sm to do it + instead. */ + +#include + +void __attribute__((noinline)) +f (unsigned int *__restrict__ a, unsigned int *__restrict__ sum, unsigned int n) +{ + unsigned int i; + for (i = 0; i < n; ++i) + *sum += a[i]; +} + +int +main () +{ + unsigned int a[] = { 1, 10, 100 }; + unsigned sum = 1000; + + f (a, &sum, 3); + if (sum != 1111) + abort (); + + return 0; +} + +/* Check that -fgcse-sm did something for f. */ +/* { dg-final { scan-rtl-dump "STORE_MOTION of f, .* basic blocks, 1 insns deleted, 1 insns created" "store_motion" } } */ -- 2.7.4