| ; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O2 -relocation-model=pic < %s | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-n32:64" |
| target triple = "powerpc64le-unknown-linux-gnu" |
| |
| ; Test back-to-back stores of TLS variables to ensure call sequences no |
| ; longer overlap. |
| |
| @__once_callable = external thread_local global ptr |
| @__once_call = external thread_local global ptr |
| |
| define i64 @call_once(i64 %flag, ptr %ptr) { |
| entry: |
| %var = alloca ptr, align 8 |
| store ptr %ptr, ptr %var, align 8 |
| store ptr %var, ptr @__once_callable, align 8 |
| store ptr @__once_call_impl, ptr @__once_call, align 8 |
| ret i64 %flag |
| } |
| |
| ; CHECK-LABEL: call_once: |
| ; CHECK: addi 3, {{[0-9]+}}, __once_callable@got@tlsgd@l |
| ; CHECK: bl __tls_get_addr(__once_callable@tlsgd) |
| ; CHECK-NEXT: nop |
| ; FIXME: We could check here for 'std {{[0-9]+}}, 0(3)', but that no longer |
| ; works because, with new scheduling freedom, we create a copy of R3 based on the |
| ; initial scheduling, but don't coalesce it again after we move the instructions |
| ; so that the copy is no longer necessary. |
| ; CHECK: addi 3, {{[0-9]+}}, __once_call@got@tlsgd@l |
| ; CHECK: bl __tls_get_addr(__once_call@tlsgd) |
| ; CHECK-NEXT: nop |
| ; FIXME: We don't really need the copy here either, we could move the store up. |
| ; CHECK: mr [[REG1:[0-9]+]], 3 |
| ; CHECK: std {{[0-9]+}}, 0([[REG1]]) |
| |
| declare void @__once_call_impl() |
