diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/fold-plusmult-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/fold-plusmult-2.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fold-plusmult-2.c b/gcc/testsuite/gcc.dg/fold-plusmult-2.c new file mode 100644 index 000000000..fd5376220 --- /dev/null +++ b/gcc/testsuite/gcc.dg/fold-plusmult-2.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-fdump-tree-original" } */ + +int foo (int i) +{ + return 2 + i * 4; +} + +/* We do _not_ want the above to be canonicalized to (i * 2 + 1) * 2. */ + +int bar (int i) +{ + return 4 + i * 2; +} + +/* But eventually this to be canonicalized to (i + 2) * 2. */ + +/* { dg-final { scan-tree-dump "i \\\* 4 \\\+ 2" "original" } } */ +/* { dg-final { scan-tree-dump "\\\(i \\\+ 2\\\) \\\* 2" "original" } } */ +/* { dg-final { cleanup-tree-dump "original" } } */ |