derek.holloway
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45 lines
1.6 KiB
LLVM
45 lines
1.6 KiB
LLVM
; Test f128 strict comparisons on z14.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | 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 %ptr1, ptr %ptr2) #0 {
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; CHECK-LABEL: f1:
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; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
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; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r5)
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; CHECK: wfcxb [[REG1]], [[REG2]]
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; CHECK-NEXT: locgrne %r2, %r3
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; CHECK: br %r14
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%f1 = load fp128, ptr %ptr1
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%f2 = load fp128, ptr %ptr2
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%cond = call i1 @llvm.experimental.constrained.fcmp.f128(
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fp128 %f1, fp128 %f2,
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metadata !"oeq",
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metadata !"fpexcept.strict") #0
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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 -- it is not worthwhile to copy to
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; FP pairs just so we can use LTXBR, so simply load up a zero.
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define i64 @f2(i64 %a, i64 %b, ptr %ptr) #0 {
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; CHECK-LABEL: f2:
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; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
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; CHECK-DAG: vzero [[REG2:%v[0-9]+]]
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; CHECK: wfcxb [[REG1]], [[REG2]]
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; CHECK-NEXT: locgrne %r2, %r3
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; CHECK: br %r14
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%f = load fp128, ptr %ptr
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%cond = call i1 @llvm.experimental.constrained.fcmp.f128(
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fp128 %f, fp128 0xL00000000000000000000000000000000,
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metadata !"oeq",
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metadata !"fpexcept.strict") #0
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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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attributes #0 = { strictfp }
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declare i1 @llvm.experimental.constrained.fcmp.f128(fp128, fp128, metadata, metadata)
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