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1; Test double atomic exchange.2;3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s4 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]+]], %f09; CHECK: [[LABEL:\.[^:]*]]:10; CHECK: csg [[RI]], [[RO]], 0(%r2)11; CHECK: jl [[LABEL]]12; CHECK: ldgr %f0, [[RI]]13; CHECK: br %r1414 %res = atomicrmw xchg ptr %src, double %b seq_cst15 ret double %res16}17