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