diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr19590.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr19590.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c b/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c new file mode 100644 index 000000000..1be1119da --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c @@ -0,0 +1,37 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-ivopts" } */ + +void vnum_test8(int *data) +{ + int i; + int stop = data[3]; + int m = data[4]; + int n = m; + for (i=1; i<stop; i++) { + int k = data[2]; + data[k] = 2; + data[0] = m - n; + k = data[1]; + m = m + k; + n = n + k; + } +} + +/* Using the SCEV analysis, this loop should be transformed to: + + | void vnum_result8(int *data) + |{ + | int i; + | int stop = data[3]; + | for (i=1; i<stop; i++) { + | int k = data[2]; + | data[k] = 2; + | data[0] = 0; + | } + |} + +*/ + +/* { dg-final { scan-tree-dump-times "= 0;" 1 "ivopts"} } */ +/* { dg-final { scan-tree-dump-times "= 2;" 1 "ivopts"} } */ +/* { dg-final { cleanup-tree-dump "ivopts" } } */ |