| ; Test atomic float subtraction. Expect a compare-and-swap loop. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| define float @f1(ptr %src, float %b) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: le [[F:%f[0-9]+]], 0(%r2) |
| ; CHECK: [[L:\.L.+]]: |
| ; CHECK: lgdr [[RI:%r[0-9]+]], [[F]] |
| ; CHECK: sebr [[F]], %f0 |
| ; CHECK: lgdr [[RO:%r[0-9]+]], [[F]] |
| ; CHECK: srlg [[RO]], [[RO]], 32 |
| ; CHECK: srlg [[RI]], [[RI]], 32 |
| ; CHECK: cs [[RI]], [[RO]], 0(%r2) |
| ; CHECK: sllg [[RI]], [[RI]], 32 |
| ; CHECK: ldgr [[F]], [[RI]] |
| ; CHECK: jl [[L]] |
| ; CHECK: ler %f0, [[F]] |
| ; CHECK: br %r14 |
| %res = atomicrmw fsub ptr %src, float %b seq_cst |
| ret float %res |
| } |
