llvm/test/CodeGen/SystemZ/int-usub-12.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
; Test 128-bit subtraction on z13 and higher
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s

define zeroext i1 @f1(i128 %a, i128 %b, ptr %res) {
; CHECK-LABEL: f1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r3), 3
; CHECK-NEXT:    vl %v1, 0(%r2), 3
; CHECK-NEXT:    vscbiq %v2, %v1, %v0
; CHECK-NEXT:    vlgvg %r2, %v2, 1
; CHECK-NEXT:    vsq %v0, %v1, %v0
; CHECK-NEXT:    xilf %r2, 1
; CHECK-NEXT:    vst %v0, 0(%r4), 3
; CHECK-NEXT:    br %r14
  %t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
  %val = extractvalue {i128, i1} %t, 0
  %obit = extractvalue {i128, i1} %t, 1
  store i128 %val, ptr %res
  ret i1 %obit
}

define zeroext i1 @f2(i128 %a, i128 %b) {
; CHECK-LABEL: f2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r3), 3
; CHECK-NEXT:    vl %v1, 0(%r2), 3
; CHECK-NEXT:    vscbiq %v0, %v1, %v0
; CHECK-NEXT:    vlgvg %r2, %v0, 1
; CHECK-NEXT:    xilf %r2, 1
; CHECK-NEXT:    br %r14
  %t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
  %obit = extractvalue {i128, i1} %t, 1
  ret i1 %obit
}

define i128 @f3(i128 %a, i128 %b) {
; CHECK-LABEL: f3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vsq %v0, %v1, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
  %val = extractvalue {i128, i1} %t, 0
  ret i128 %val
}

define i128 @f4(i128 %a, i128 %b) {
; CHECK-LABEL: f4:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vscbiq %v2, %v1, %v0
; CHECK-NEXT:    vlgvf %r0, %v2, 3
; CHECK-NEXT:    vgbm %v2, 0
; CHECK-NEXT:    xilf %r0, 1
; CHECK-NEXT:    jl .LBB3_2
; CHECK-NEXT:  # %bb.1:
; CHECK-NEXT:    vsq %v2, %v1, %v0
; CHECK-NEXT:  .LBB3_2:
; CHECK-NEXT:    vst %v2, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %val = call i128 @llvm.usub.sat.i128(i128 %a, i128 %b)
  ret i128 %val
}

declare {i128, i1} @llvm.usub.with.overflow.i128(i128, i128) nounwind readnone
declare i128 @llvm.usub.sat.i128(i128, i128) nounwind readnone