derek.holloway
7502bf64a4
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37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; Test 128-bit floating-point comparison. The tests assume a z10 implementation
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; of select, using conditional branches rather than LOCGR.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; There is no memory form of 128-bit comparison.
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define i64 @f1(i64 %a, i64 %b, ptr %ptr, float %f2) {
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; CHECK-LABEL: f1:
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; CHECK-DAG: lxebr %f0, %f0
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; CHECK-DAG: ld %f1, 0(%r4)
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; CHECK-DAG: ld %f3, 8(%r4)
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; CHECK: cxbr %f1, %f0
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; CHECK-NEXT: ber %r14
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%f2x = fpext float %f2 to fp128
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%f1 = load fp128, ptr %ptr
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%cond = fcmp oeq fp128 %f1, %f2x
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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; Check comparison with zero.
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define i64 @f2(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f2:
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; CHECK: ld %f0, 0(%r4)
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; CHECK: ld %f2, 8(%r4)
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; CHECK: ltxbr %f0, %f0
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; CHECK-NEXT: ber %r14
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%f = load fp128, ptr %ptr
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%cond = fcmp oeq fp128 %f, 0xL00000000000000000000000000000000
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%res = select i1 %cond, i64 %a, i64 %b
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ret i64 %res
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}
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