| ; RUN: llc -mtriple armv7a--none-eabi < %s | FileCheck %s |
| ; RUN: llc -mtriple armv7a--none-eabi < %s -enable-ipra | FileCheck %s |
| |
| ; Other targets disable callee-saved registers for internal functions when |
| ; using IPRA, but that isn't profitable for ARM because the PUSH/POP |
| ; instructions can more efficiently save registers than using individual |
| ; LDR/STRs in the caller. |
| |
| define internal void @callee() norecurse { |
| ; CHECK-LABEL: callee: |
| entry: |
| ; CHECK: push {r4, lr} |
| ; CHECK: pop {r4, pc} |
| tail call void asm sideeffect "", "~{r4}"() |
| ret void |
| } |
| |
| define void @caller() { |
| entry: |
| call void @callee() |
| ret void |
| } |
