diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-9.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-9.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-9.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-9.c new file mode 100644 index 000000000..cb5750227 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-9.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-trapping-math -fdump-tree-ifcombine" } */ + +void f (); +enum Sign { NEG=-1, ZERO, POS }; + +static inline enum Sign sign (double x) +{ + if (x > 0) return POS; + if (x < 0) return NEG; + return ZERO; +} +void g (double x) +{ + if (sign (x) == NEG) f(); +} + +/* The above should be optimized to x < 0 by ifcombine. + The transformation would also be legal with -ftrapping-math. */ + +/* { dg-final { scan-tree-dump "optimizing.* < " "ifcombine" } } */ +/* { dg-final { cleanup-tree-dump "ifcombine" } } */ |