[PowerPC] Attempt to fix test added in llvm#141263

Author: nico

llvm/test/CodeGen/PowerPC/atomic-compare-exchange-weak.ll

@@ -4,10 +4,10 @@
 ;  return atomic_compare_exchange_weak_explicit(cp, old, c, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
 ; }
 
-; RUN: llc < %s -ppc-asm-full-reg-names  -mtriple=powerpc-ibm-aix -mcpu=pwr8  -verify-machineinstrs |\ 
-;        FileCheck %s --check-prefix=CHECK
-; RUN: llc < %s -ppc-asm-full-reg-names  -mtriple=powerpc64-ibm-aix -mcpu=pwr8  -verify-machineinstrs |\
-;        FileCheck %s --check-prefix=CHECK64
+; RUN: llc < %s -ppc-asm-full-reg-names  -mtriple=powerpc-ibm-aix -mcpu=pwr8  -verify-machineinstrs \
+; RUN:   | FileCheck %s --check-prefix=CHECK
+; RUN: llc < %s -ppc-asm-full-reg-names  -mtriple=powerpc64-ibm-aix -mcpu=pwr8  -verify-machineinstrs \
+; RUN:   | FileCheck %s --check-prefix=CHECK64
 
 define i32 @foo(ptr noundef %cp, ptr noundef %old, i32 noundef %c)  {
 ; CHECK-LABEL: foo: