44 lines
1.2 KiB
LLVM
44 lines
1.2 KiB
LLVM
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; Test 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: lpdfr %f0, %f0
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; CHECK: br %r14
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%res = call float @llvm.fabs.f32(float %f)
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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: lpdfr %f0, %f0
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; CHECK: br %r14
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%res = call double @llvm.fabs.f64(double %f)
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ret double %res
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}
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; Test f128. With the loads and stores, a pure absolute would probably
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; be better implemented using an NI on the upper byte. Do some extra
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; 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(fp128 *%ptr, fp128 *%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: wflpxb [[POSREG1:%v[0-9]+]], [[REG1]]
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; CHECK: wfdxb [[RES:%v[0-9]+]], [[POSREG1]], [[REG2]]
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; CHECK: vst [[RES]], 0(%r2)
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; CHECK: br %r14
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%orig = load fp128, fp128 *%ptr
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%abs = call fp128 @llvm.fabs.f128(fp128 %orig)
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%op2 = load fp128, fp128 *%ptr2
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%res = fdiv fp128 %abs, %op2
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store fp128 %res, fp128 *%ptr
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ret void
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}
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