| ; Test atomic double addition. Expect a compare-and-swap loop. | |
| ; | |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s | |
| define double @f1(ptr %src, double %b) { | |
| ; CHECK-LABEL: f1: | |
| ; CHECK: ld [[F:%f[0-9]+]], 0(%r2) | |
| ; CHECK: [[L:\.L.+]]: | |
| ; CHECK: lgdr [[RI:%r[0-9]+]], [[F]] | |
| ; CHECK: adbr [[F]], %f0 | |
| ; CHECK: lgdr [[RO:%r[0-9]+]], [[F]] | |
| ; CHECK: csg [[RI]], [[RO]], 0(%r2) | |
| ; CHECK: ldgr [[F]], [[RI]] | |
| ; CHECK: jl [[L]] | |
| ; CHECK: ldr %f0, [[F]] | |
| ; CHECK: br %r14 | |
| %res = atomicrmw fadd ptr %src, double %b seq_cst | |
| ret double %res | |
| } |