1; Test double atomic exchange. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5define double @f1(ptr %src, double %b) { 6; CHECK-LABEL: f1: 7; CHECK: lg [[RI:%r[0-9]+]], 0(%r2) 8; CHECK: lgdr [[RO:%r[0-9]+]], %f0 9; CHECK: [[LABEL:\.[^:]*]]: 10; CHECK: csg [[RI]], [[RO]], 0(%r2) 11; CHECK: jl [[LABEL]] 12; CHECK: ldgr %f0, [[RI]] 13; CHECK: br %r14 14 %res = atomicrmw xchg ptr %src, double %b seq_cst 15 ret double %res 16} 17