File: fp-strict-sub-04.ll

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llvm-toolchain-16 1%3A16.0.6-15~deb12u1
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; Test strict 128-bit floating-point subtraction on z14.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s

declare fp128 @llvm.experimental.constrained.fsub.f128(fp128, fp128, metadata, metadata)

define void @f1(ptr %ptr1, ptr %ptr2) strictfp {
; CHECK-LABEL: f1:
; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r2)
; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r3)
; CHECK: wfsxb [[RES:%v[0-9]+]], [[REG1]], [[REG2]]
; CHECK: vst [[RES]], 0(%r2)
; CHECK: br %r14
  %f1 = load fp128, ptr %ptr1
  %f2 = load fp128, ptr %ptr2
  %sum = call fp128 @llvm.experimental.constrained.fsub.f128(
                        fp128 %f1, fp128 %f2,
                        metadata !"round.dynamic",
                        metadata !"fpexcept.strict") strictfp
  store fp128 %sum, ptr %ptr1
  ret void
}