29 lines
1 KiB
LLVM
29 lines
1 KiB
LLVM
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; Test long double atomic exchange.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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define void @f1(ptr align 16 %ret, ptr align 16 %src, ptr align 16 %b) {
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; CHECK-LABEL: f1:
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; CHECK: lg %r1, 8(%r4)
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; CHECK-NEXT: lg %r0, 0(%r4)
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; CHECK-NEXT: lg %r4, 8(%r3)
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; CHECK-NEXT: lg %r5, 0(%r3)
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; CHECK-NEXT:.LBB0_1: # %atomicrmw.start
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: lgr %r12, %r5
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; CHECK-NEXT: lgr %r13, %r4
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; CHECK-NEXT: cdsg %r12, %r0, 0(%r3)
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; CHECK-NEXT: lgr %r4, %r13
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; CHECK-NEXT: lgr %r5, %r12
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; CHECK-NEXT: jl .LBB0_1
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; CHECK-NEXT:# %bb.2: # %atomicrmw.end
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; CHECK-NEXT: stg %r5, 0(%r2)
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; CHECK-NEXT: stg %r4, 8(%r2)
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; CHECK-NEXT: lmg %r12, %r15, 96(%r15)
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; CHECK-NEXT: br %r14
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%val = load fp128, ptr %b, align 16
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%res = atomicrmw xchg ptr %src, fp128 %val seq_cst
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store fp128 %res, ptr %ret, align 16
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ret void
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}
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