| ; Test negated floating-point absolute on z14. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s |
| |
| ; Test f32. |
| declare float @llvm.fabs.f32(float %f) |
| define float @f1(float %f) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: lndfr %f0, %f0 |
| ; CHECK: br %r14 |
| %abs = call float @llvm.fabs.f32(float %f) |
| %res = fsub float -0.0, %abs |
| ret float %res |
| } |
| |
| ; Test f64. |
| declare double @llvm.fabs.f64(double %f) |
| define double @f2(double %f) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: lndfr %f0, %f0 |
| ; CHECK: br %r14 |
| %abs = call double @llvm.fabs.f64(double %f) |
| %res = fsub double -0.0, %abs |
| ret double %res |
| } |
| |
| ; Test f128. With the loads and stores, a pure negative-absolute would |
| ; probably be better implemented using an OI on the upper byte. Do some |
| ; extra processing so that using FPRs is unequivocally better. |
| declare fp128 @llvm.fabs.f128(fp128 %f) |
| define void @f3(fp128 *%ptr, fp128 *%ptr2) { |
| ; CHECK-LABEL: f3: |
| ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r2) |
| ; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r3) |
| ; CHECK-DAG: wflnxb [[NEGREG1:%v[0-9]+]], [[REG1]] |
| ; CHECK: wfdxb [[RES:%v[0-9]+]], [[NEGREG1]], [[REG2]] |
| ; CHECK: vst [[RES]], 0(%r2) |
| ; CHECK: br %r14 |
| %orig = load fp128, fp128 *%ptr |
| %abs = call fp128 @llvm.fabs.f128(fp128 %orig) |
| %negabs = fsub fp128 0xL00000000000000008000000000000000, %abs |
| %op2 = load fp128, fp128 *%ptr2 |
| %res = fdiv fp128 %negabs, %op2 |
| store fp128 %res, fp128 *%ptr |
| ret void |
| } |