| /* { dg-do compile { target powerpc*-*-* } } */ |
| /* { dg-options "-O2" } */ |
| /* { dg-final { scan-assembler {#before\M.*\mmflr\M} } } */ |
| |
| /* This tests if shrink-wrapping for separate components works. |
| |
| r20 (a callee-saved register) is forced live at the start, so that we |
| get it saved in a prologue at the start of the function. |
| The link register only needs to be saved if x is non-zero; without |
| separate shrink-wrapping it would however be saved in the one prologue. |
| The test tests if the mflr insn ends up behind the prologue. */ |
| |
| void g(void); |
| |
| void f(int x) |
| { |
| register int r20 asm("20") = x; |
| asm("#before" : : "r"(r20)); |
| if (x) |
| g(); |
| asm(""); // no tailcall of g |
| } |
