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+; 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
+}