llvm/test/Transforms/InstCombine/insertelement.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

define <4 x i32> @insert_known_idx(<4 x i32> %x) {
; CHECK-LABEL: @insert_known_idx(
; CHECK-NEXT:    [[V1:%.*]] = and <4 x i32> [[X:%.*]], <i32 poison, i32 7, i32 7, i32 7>
; CHECK-NEXT:    [[V2:%.*]] = insertelement <4 x i32> [[V1]], i32 6, i64 0
; CHECK-NEXT:    ret <4 x i32> [[V2]]
;
  %v1 = and <4 x i32> %x, <i32 7, i32 7, i32 7, i32 7>
  %v2 = insertelement <4 x i32> %v1, i32 6, i32 0
  %v3 = and <4 x i32> %v2, <i32 7, i32 7, i32 7, i32 7>
  ret <4 x i32> %v3
}

define <4 x i32> @insert_unknown_idx(<4 x i32> %x, i32 %idx) {
; CHECK-LABEL: @insert_unknown_idx(
; CHECK-NEXT:    [[V1:%.*]] = and <4 x i32> [[X:%.*]], splat (i32 7)
; CHECK-NEXT:    [[V2:%.*]] = insertelement <4 x i32> [[V1]], i32 6, i32 [[IDX:%.*]]
; CHECK-NEXT:    ret <4 x i32> [[V2]]
;
  %v1 = and <4 x i32> %x, <i32 7, i32 7, i32 7, i32 7>
  %v2 = insertelement <4 x i32> %v1, i32 6, i32 %idx
  %v3 = and <4 x i32> %v2, <i32 7, i32 7, i32 7, i32 7>
  ret <4 x i32> %v3
}

define <2 x i8> @insert_known_any_idx(<2 x i8> %xx, i8 %yy, i32 %idx) {
; CHECK-LABEL: @insert_known_any_idx(
; CHECK-NEXT:    ret <2 x i8> splat (i8 16)
;
  %x = or <2 x i8> %xx, <i8 16, i8 16>
  %y = or i8 %yy, 16

  %ins = insertelement <2 x i8> %x, i8 %y, i32 %idx
  %r = and <2 x i8> %ins, <i8 16, i8 16>
  ret <2 x i8> %r
}

define <2 x i8> @insert_known_any_idx_fail1(<2 x i8> %xx, i8 %yy, i32 %idx) {
; CHECK-LABEL: @insert_known_any_idx_fail1(
; CHECK-NEXT:    [[X:%.*]] = or <2 x i8> [[XX:%.*]], <i8 17, i8 33>
; CHECK-NEXT:    [[Y:%.*]] = or i8 [[YY:%.*]], 16
; CHECK-NEXT:    [[INS:%.*]] = insertelement <2 x i8> [[X]], i8 [[Y]], i32 [[IDX:%.*]]
; CHECK-NEXT:    [[R:%.*]] = and <2 x i8> [[INS]], splat (i8 16)
; CHECK-NEXT:    ret <2 x i8> [[R]]
;
  %x = or <2 x i8> %xx, <i8 17, i8 33>
  %y = or i8 %yy, 16

  %ins = insertelement <2 x i8> %x, i8 %y, i32 %idx
  %r = and <2 x i8> %ins, <i8 16, i8 16>
  ret <2 x i8> %r
}


define <2 x i8> @insert_known_any_idx_fail2(<2 x i8> %xx, i8 %yy, i32 %idx) {
; CHECK-LABEL: @insert_known_any_idx_fail2(
; CHECK-NEXT:    [[X:%.*]] = or <2 x i8> [[XX:%.*]], <i8 17, i8 31>
; CHECK-NEXT:    [[Y:%.*]] = or i8 [[YY:%.*]], 15
; CHECK-NEXT:    [[INS:%.*]] = insertelement <2 x i8> [[X]], i8 [[Y]], i32 [[IDX:%.*]]
; CHECK-NEXT:    [[R:%.*]] = and <2 x i8> [[INS]], splat (i8 16)
; CHECK-NEXT:    ret <2 x i8> [[R]]
;
  %x = or <2 x i8> %xx, <i8 17, i8 31>
  %y = or i8 %yy, 15

  %ins = insertelement <2 x i8> %x, i8 %y, i32 %idx
  %r = and <2 x i8> %ins, <i8 16, i8 16>
  ret <2 x i8> %r
}