/* { dg-do compile } */ /* { dg-options "-O3 -march=z10 -mzarch --save-temps -mfunction-return-mem=thunk-extern -mindirect-branch-table" } */ int gl = 0; int __attribute__((noinline,noclone)) bar (int a) { return a + 2; } void __attribute__((noinline,noclone)) foo (int a) { int i; if (a == 42) return; for (i = 0; i < a; i++) gl += bar (i); } int main () { foo (3); if (gl != 9) __builtin_abort (); return 0; } /* With -march=z10 -mzarch the shrink wrapped returns use compare and swap relative to jump to the exit block instead of making use of the conditional return pattern. FIXME: Use compare and branch register for that!!!! */ /* 2 x foo, 1 x main /* { dg-final { scan-assembler-times "jg\t__s390_indirect_jump" 3 } } */ /* No thunks due to thunk-extern. */ /* { dg-final { scan-assembler-not "exrl" } } */ /* { dg-final { scan-assembler-not ".globl __s390_indirect_jump" } } */ /* { dg-final { scan-assembler-not "section\t.s390_indirect_jump" } } */ /* { dg-final { scan-assembler-not "section\t.s390_indirect_call" } } */ /* { dg-final { scan-assembler-not "section\t.s390_return_reg" } } */ /* { dg-final { scan-assembler "section\t.s390_return_mem" } } */