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.
47 lines
1.3 KiB
LLVM
47 lines
1.3 KiB
LLVM
; Test negated floating-point absolute 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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; Test f32.
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declare float @llvm.fabs.f32(float %f)
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define float @f1(float %f) {
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; CHECK-LABEL: f1:
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; CHECK: lndfr %f0, %f0
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; CHECK: br %r14
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%abs = call float @llvm.fabs.f32(float %f)
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%res = fneg float %abs
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ret float %res
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}
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; Test f64.
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declare double @llvm.fabs.f64(double %f)
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define double @f2(double %f) {
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; CHECK-LABEL: f2:
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; CHECK: lndfr %f0, %f0
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; CHECK: br %r14
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%abs = call double @llvm.fabs.f64(double %f)
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%res = fneg double %abs
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ret double %res
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}
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; Test f128. With the loads and stores, a pure negative-absolute would
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; probably be better implemented using an OI on the upper byte. Do some
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; extra processing so that using FPRs is unequivocally better.
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declare fp128 @llvm.fabs.f128(fp128 %f)
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define void @f3(ptr %ptr, ptr %ptr2) {
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; CHECK-LABEL: f3:
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; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r2)
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; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r3)
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; CHECK-DAG: wflnxb [[NEGREG1:%v[0-9]+]], [[REG1]]
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; CHECK: wfdxb [[RES:%v[0-9]+]], [[NEGREG1]], [[REG2]]
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; CHECK: vst [[RES]], 0(%r2)
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; CHECK: br %r14
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%orig = load fp128, ptr %ptr
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%abs = call fp128 @llvm.fabs.f128(fp128 %orig)
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%negabs = fneg fp128 %abs
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%op2 = load fp128, ptr %ptr2
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%res = fdiv fp128 %negabs, %op2
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store fp128 %res, ptr %ptr
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ret void
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}
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