diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/recip-2.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/recip-2.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c b/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c new file mode 100644 index 000000000..be754145e --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/recip-2.c @@ -0,0 +1,35 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -funsafe-math-optimizations -fdump-tree-recip" } */ + +float u, v, w, x, y, z; + +void e(float a, float b, float c, float d, float e, float f) +{ + if (a < b) + { + a = a + b; + c = c + d; + } + + /* The PHI nodes for these divisions should be combined. */ + d = d / a; + e = e / a; + f = f / a; + + a = a / c; + b = b / c; + + /* This should not be left as a multiplication. */ + c = 1 / c; + + u = a; + v = b; + w = c; + x = d; + y = e; + z = f; +} + +/* { dg-final { scan-tree-dump-times " / " 2 "recip" } } */ +/* { dg-final { scan-tree-dump-times " \\* " 5 "recip" } } */ +/* { dg-final { cleanup-tree-dump "recip" } } */ |