diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr63209.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr63209.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr63209.c b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr63209.c new file mode 100644 index 0000000..9bcb587 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.c-torture/execute/pr63209.c @@ -0,0 +1,27 @@ +static int Sub(int a, int b) { + return b -a; +} + +static unsigned Select(unsigned a, unsigned b, unsigned c) { + const int pa_minus_pb = + Sub((a >> 8) & 0xff, (b >> 8) & 0xff) + + Sub((a >> 0) & 0xff, (b >> 0) & 0xff); + return (pa_minus_pb <= 0) ? a : b; +} + +__attribute__((noinline)) unsigned Predictor(unsigned left, const unsigned* const top) { + const unsigned pred = Select(top[1], left, top[0]); + return pred; +} + +int main(void) { + const unsigned top[2] = {0xff7a7a7a, 0xff7a7a7a}; + const unsigned left = 0xff7b7b7b; + const unsigned pred = Predictor(left, top /*+ 1*/); + if (pred == left) + return 0; + return 1; +} + + + |