| ; 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 | |
| ; CHECK: std {{[0-9]+}}, 0(3) | |
| ; CHECK: mr 3, 30 | |
| declare void @__once_call_impl() |