1; Test atomic double addition. Expect a compare-and-swap loop. 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: ld [[F:%f[0-9]+]], 0(%r2) 8; CHECK: [[L:\.L.+]]: 9; CHECK: lgdr [[RI:%r[0-9]+]], [[F]] 10; CHECK: adbr [[F]], %f0 11; CHECK: lgdr [[RO:%r[0-9]+]], [[F]] 12; CHECK: csg [[RI]], [[RO]], 0(%r2) 13; CHECK: ldgr [[F]], [[RI]] 14; CHECK: jl [[L]] 15; CHECK: ldr %f0, [[F]] 16; CHECK: br %r14 17 %res = atomicrmw fadd ptr %src, double %b seq_cst 18 ret double %res 19} 20