diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-38.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-38.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-38.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-38.c new file mode 100644 index 00000000000..3108ec24851 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-38.c @@ -0,0 +1,48 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details" } */ + + +int main () +{ + int a = 3; + int b = 2; + int c = 11; + int d = -5; + + while (a) + { + b += 5; + a += b; + + for (d = -5; d < 0; d++) + { + /* Exercises the build_polynomial_evolution_in_loop function in the following context: + (add_to_evolution + loop_num = 2 + chrec_before = {3, +, 7, +, 5}_1 + to_add = {11, +, 12}_1 + res = {{3, +, 7, +, 5}_1, +, {11, +, 12}_1}_2 + ) + + This also exercises the chrec_apply function in the following context: + (chrec_apply + var = 2 + chrec = {0, +, {11, +, 12}_1}_2 + x = 5 + res = {55, +, 60}_1 + ) + */ + a += c; + } + c += 12; + } +} + +/* + b -> {2, +, 5}_1 + c -> {11, +, 12}_1 + d -> {-5, +, 1}_2 + a -> {{3, +, 62, +, 65}_1, +, {11, +, 12}_1}_2 +*/ + +/* FIXME. */ |