| ; Test strict 128-bit floating-point subtraction. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| declare fp128 @llvm.experimental.constrained.fsub.f128(fp128, fp128, metadata, metadata) |
| |
| ; There is no memory form of 128-bit subtraction. |
| define void @f1(fp128 *%ptr, float %f2) strictfp { |
| ; CHECK-LABEL: f1: |
| ; CHECK-DAG: lxebr %f0, %f0 |
| ; CHECK-DAG: ld %f1, 0(%r2) |
| ; CHECK-DAG: ld %f3, 8(%r2) |
| ; CHECK: sxbr %f1, %f0 |
| ; CHECK: std %f1, 0(%r2) |
| ; CHECK: std %f3, 8(%r2) |
| ; CHECK: br %r14 |
| %f1 = load fp128, fp128 *%ptr |
| %f2x = fpext float %f2 to fp128 |
| %sum = call fp128 @llvm.experimental.constrained.fsub.f128( |
| fp128 %f1, fp128 %f2x, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") strictfp |
| store fp128 %sum, fp128 *%ptr |
| ret void |
| } |
