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1; Test incrementing up to a maximum value. Expect a compare-and-swap loop.2;3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s4 5define i64 @f1(ptr %src, i64 %b) {6; CHECK-LABEL: f1:7; CHECK: lgr [[SRC:%r[0-9]+]], %r28; CHECK: lg [[RI:%r[0-9]+]], 0(%r2)9; CHECK: j [[L2:\.L.+]]10; CHECK: [[L1:\.L.+]]:11; CHECK: csg [[RI]], [[RO:%r[0-9]+]], 0([[SRC]])12; CHECK: je [[L3:\.L.+]]13; CHECK: [[L2]]:14; CHECK: lghi [[RO]], 015; CHECK: clgrjhe [[RI]], %r3, [[L1]]16; CHECK: la [[RO]], 1([[RI]])17; CHECK: j [[L1]]18; CHECK: [[L3]]:19; CHECK: br %r1420 %res = atomicrmw uinc_wrap ptr %src, i64 %b seq_cst21 ret i64 %res22}23