TheRock/compiler/amd-llvm/llvm/test/CodeGen/SystemZ/int-mul-16.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
; Test high-part i128->i256 multiplications on z17.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z17 | FileCheck %s

; Multiply high signed.
define i128 @f1(i128 %a, i128 %b) {
; CHECK-LABEL: f1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vmhq %v0, %v1, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = sext i128 %a to i256
  %extb = sext i128 %b to i256
  %extres = mul i256 %exta, %extb
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply high unsigned.
define i128 @f2(i128 %a, i128 %b) {
; CHECK-LABEL: f2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vmlhq %v0, %v1, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = zext i128 %a to i256
  %extb = zext i128 %b to i256
  %extres = mul i256 %exta, %extb
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high signed.
define i128 @f3(i128 %a, i128 %b, i128 %add) {
; CHECK-LABEL: f3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r5), 3
; CHECK-NEXT:    vl %v1, 0(%r4), 3
; CHECK-NEXT:    vl %v2, 0(%r3), 3
; CHECK-NEXT:    vmahq %v0, %v2, %v1, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = sext i128 %a to i256
  %extb = sext i128 %b to i256
  %extadd = sext i128 %add to i256
  %extmul = mul i256 %exta, %extb
  %extres = add i256 %extmul, %extadd
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high unsigned.
define i128 @f4(i128 %a, i128 %b, i128 %add) {
; CHECK-LABEL: f4:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vl %v0, 0(%r5), 3
; CHECK-NEXT:    vl %v1, 0(%r4), 3
; CHECK-NEXT:    vl %v2, 0(%r3), 3
; CHECK-NEXT:    vmalhq %v0, %v2, %v1, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = zext i128 %a to i256
  %extb = zext i128 %b to i256
  %extadd = zext i128 %add to i256
  %extmul = mul i256 %exta, %extb
  %extres = add i256 %extmul, %extadd
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high signed with immediate operand to multiply.
define i128 @f5(i128 %a, i128 %add) {
; CHECK-LABEL: f5:
; CHECK:       # %bb.0:
; CHECK-NEXT:    larl %r1, .LCPI4_0
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vl %v2, 0(%r1), 3
; CHECK-NEXT:    vmahq %v0, %v1, %v2, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = sext i128 %a to i256
  %extadd = sext i128 %add to i256
  %extmul = mul i256 %exta, 12345
  %extres = add i256 %extmul, %extadd
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high unsigned with immediate operand to multiply.
define i128 @f6(i128 %a, i128 %add) {
; CHECK-LABEL: f6:
; CHECK:       # %bb.0:
; CHECK-NEXT:    larl %r1, .LCPI5_0
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vl %v2, 0(%r1), 3
; CHECK-NEXT:    vmalhq %v0, %v1, %v2, %v0
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = zext i128 %a to i256
  %extadd = zext i128 %add to i256
  %extmul = mul i256 %exta, 12345
  %extres = add i256 %extmul, %extadd
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high signed with immediate operand to addition.
define i128 @f7(i128 %a, i128 %b) {
; CHECK-LABEL: f7:
; CHECK:       # %bb.0:
; CHECK-NEXT:    larl %r1, .LCPI6_0
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vl %v2, 0(%r1), 3
; CHECK-NEXT:    vmahq %v0, %v1, %v0, %v2
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = sext i128 %a to i256
  %extb = sext i128 %b to i256
  %extmul = mul i256 %exta, %extb
  %extres = add i256 %extmul, 12345
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}

; Multiply-and-add high unsigned with immediate operand to addition.
define i128 @f8(i128 %a, i128 %b) {
; CHECK-LABEL: f8:
; CHECK:       # %bb.0:
; CHECK-NEXT:    larl %r1, .LCPI7_0
; CHECK-NEXT:    vl %v0, 0(%r4), 3
; CHECK-NEXT:    vl %v1, 0(%r3), 3
; CHECK-NEXT:    vl %v2, 0(%r1), 3
; CHECK-NEXT:    vmalhq %v0, %v1, %v0, %v2
; CHECK-NEXT:    vst %v0, 0(%r2), 3
; CHECK-NEXT:    br %r14
  %exta = zext i128 %a to i256
  %extb = zext i128 %b to i256
  %extmul = mul i256 %exta, %extb
  %extres = add i256 %extmul, 12345
  %shiftres = lshr i256 %extres, 128
  %res = trunc i256 %shiftres to i128
  ret i128 %res
}