1 ; Test negated floating-point absolute on z14.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
6 declare float @llvm.fabs.f32(float %f)
7 define float @f1(float %f) {
9 ; CHECK: lndfr %f0, %f0
11 %abs = call float @llvm.fabs.f32(float %f)
12 %res = fsub float -0.0, %abs
17 declare double @llvm.fabs.f64(double %f)
18 define double @f2(double %f) {
20 ; CHECK: lndfr %f0, %f0
22 %abs = call double @llvm.fabs.f64(double %f)
23 %res = fsub double -0.0, %abs
27 ; Test f128. With the loads and stores, a pure negative-absolute would
28 ; probably be better implemented using an OI on the upper byte. Do some
29 ; extra processing so that using FPRs is unequivocally better.
30 declare fp128 @llvm.fabs.f128(fp128 %f)
31 define void @f3(fp128 *%ptr, fp128 *%ptr2) {
33 ; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r2)
34 ; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r3)
35 ; CHECK-DAG: wflnxb [[NEGREG1:%v[0-9]+]], [[REG1]]
36 ; CHECK: wfdxb [[RES:%v[0-9]+]], [[NEGREG1]], [[REG2]]
37 ; CHECK: vst [[RES]], 0(%r2)
39 %orig = load fp128, fp128 *%ptr
40 %abs = call fp128 @llvm.fabs.f128(fp128 %orig)
41 %negabs = fsub fp128 0xL00000000000000008000000000000000, %abs
42 %op2 = load fp128, fp128 *%ptr2
43 %res = fdiv fp128 %negabs, %op2
44 store fp128 %res, fp128 *%ptr