/* { dg-do compile } */ /* { dg-options "-O1 -ftree-loop-ivcanon -funroll-loops -fdump-tree-ivcanon-details -fdump-tree-cunroll-details -fdump-tree-vars" } */ /* On 31-bit S/390 the function address will be stored (once) in the literal pool, so scan-assembler-times "foo" will return 1 even if the loop is fully unrolled. -msmall-exec avoids this by enabling a call instruction with immediate operand. */ /* { dg-options "-O1 -ftree-loop-ivcanon -funroll-loops -fdump-tree-ivcanon-details -fdump-tree-cunroll-details -fdump-tree-vars -msmall-exec" { target s390-*-* } } */ /* On Darwin, we call extern functions via a stub in PIC mode which is default and the stub is named after the function. To avoid this we use -static to go out of PIC mode. */ /* { dg-options "-O1 -ftree-loop-ivcanon -funroll-loops -fdump-tree-ivcanon-details -fdump-tree-cunroll-details -fdump-tree-vars -static" { target *-*-darwin* } } */ void xxx(void) { int x = 45; while (x >>= 1) foo (); } /* We should be able to find out that the loop iterates four times and unroll it completely. */ /* { dg-final { scan-tree-dump-times "Added canonical iv to loop 1, 4 iterations" 1 "ivcanon"} } */ /* { dg-final { scan-tree-dump-times "Unrolled loop 1 completely" 1 "cunroll"} } */ /* { dg-final { scan-tree-dump-times "foo" 5 "vars"} } */ /* { dg-final { scan-assembler-times "foo" 5} } */