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/* { dg-do compile } */
/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details" } */
int bar (void);
int foo ()
{
int a = -100;
int b = 2;
int c = 3;
int d = 4;
while (a)
{
a = a + b;
/* Exercises if-phi-nodes. */
if (bar ())
b = b + c;
c = c + d;
}
}
/* The analyzer has to detect the following evolution functions:
c -> {3, +, 4}_1
b -> {2, +, {[0, 3], +, [0, 4]}_1}_1
a -> {-100, +, {2, +, {[0, 3], +, [0, 4]}_1}_1}_1
*/
/* FIXME. */
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