Message ID | n3598546-36or-40p2-732n-n66o71so81q@fhfr.qr |
---|---|
State | New |
Headers | show |
Series | tree-optimization/66502 - add testcase | expand |
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-98.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-98.c new file mode 100644 index 00000000000..3d286099b25 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-98.c @@ -0,0 +1,18 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-fre1-details" } */ + +int foo (int a, int s, unsigned int k) +{ + int i = a, j = a; + do + { + i += s; + j += j; + j -= a; + } + while (k--); + return j+i; +} + +/* We want the redundant PHI for j to disappear. */ +/* { dg-final { scan-tree-dump "Replaced redundant PHI node defining j" "fre1" } } */