blob: 513d49c7acf5787791d1af009b14bdad032e74f5 [file] [log] [blame]
; Test negated floating-point absolute.
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Test f32.
declare float @llvm.fabs.f32(float %f)
define float @f1(float %f) {
; CHECK: f1:
; CHECK: lnebr %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: f2:
; CHECK: lndbr %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: f3:
; CHECK: lnxbr
; CHECK: dxbr
; CHECK: br %r14
%orig = load fp128 *%ptr
%abs = call fp128 @llvm.fabs.f128(fp128 %orig)
%negabs = fsub fp128 0xL00000000000000008000000000000000, %abs
%op2 = load fp128 *%ptr2
%res = fdiv fp128 %negabs, %op2
store fp128 %res, fp128 *%ptr
ret void