1 ; RUN: llc -march=ppc64 -mcpu=pwr7 -O2 -relocation-model=pic < %s | FileCheck %s 2 3 target datalayout = "e-m:e-i64:64-n32:64" 4 target triple = "powerpc64le-unknown-linux-gnu" 5 6 ; Test back-to-back stores of TLS variables to ensure call sequences no 7 ; longer overlap. 8 9 @__once_callable = external thread_local global i8** 10 @__once_call = external thread_local global void ()* 11 12 define i64 @call_once(i64 %flag, i8* %ptr) { 13 entry: 14 %var = alloca i8*, align 8 15 store i8* %ptr, i8** %var, align 8 16 store i8** %var, i8*** @__once_callable, align 8 17 store void ()* @__once_call_impl, void ()** @__once_call, align 8 18 ret i64 %flag 19 } 20 21 ; CHECK-LABEL: call_once: 22 ; CHECK: addi 3, {{[0-9]+}}, __once_callable@got@tlsgd@l 23 ; CHECK: bl __tls_get_addr(__once_callable@tlsgd) 24 ; CHECK-NEXT: nop 25 ; FIXME: We could check here for 'std {{[0-9]+}}, 0(3)', but that no longer 26 ; works because, with new scheduling freedom, we create a copy of R3 based on the 27 ; initial scheduling, but don't coalesce it again after we move the instructions 28 ; so that the copy is no longer necessary. 29 ; CHECK: addi 3, {{[0-9]+}}, __once_call@got@tlsgd@l 30 ; CHECK: bl __tls_get_addr(__once_call@tlsgd) 31 ; CHECK-NEXT: nop 32 ; FIXME: We don't really need the copy here either, we could move the store up. 33 ; CHECK: mr [[REG1:[0-9]+]], 3 34 ; CHECK: std {{[0-9]+}}, 0([[REG1]]) 35 36 declare void @__once_call_impl() 37
