a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; Test 128-bit floating-point strict comparison. The tests assume a z10
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; implementation 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) #0 {
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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 = call i1 @llvm.experimental.constrained.fcmp.f128(
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fp128 %f1, fp128 %f2x,
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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.
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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: 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 = 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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