vector-or-load.ll | Explore in Territory

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

; Use the same idoim as X86/or-load.ll @loadCombine_2consecutive to represent a
; sequence of operations that can be replaced by a single double-width load when
; using scalar types but whose logic does not apply to fixed length vectors.
define <8 x i16> @or-load-fixed-length-vector(ptr %p1) {
; CHECK-LABEL: @or-load-fixed-length-vector(
; CHECK-NEXT:    [[P2:%.*]] = getelementptr i8, ptr [[P1:%.*]], i32 1
; CHECK-NEXT:    [[L1:%.*]] = load <8 x i8>, ptr [[P1]], align 1
; CHECK-NEXT:    [[L2:%.*]] = load <8 x i8>, ptr [[P2]], align 1
; CHECK-NEXT:    [[E1:%.*]] = zext <8 x i8> [[L1]] to <8 x i16>
; CHECK-NEXT:    [[E2:%.*]] = zext <8 x i8> [[L2]] to <8 x i16>
; CHECK-NEXT:    [[S2:%.*]] = shl <8 x i16> [[E2]], <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
; CHECK-NEXT:    [[OR:%.*]] = or <8 x i16> [[E1]], [[S2]]
; CHECK-NEXT:    ret <8 x i16> [[OR]]
;
  %p2 = getelementptr i8, ptr %p1, i32 1
  %l1 = load <8 x i8>, ptr %p1, align 1
  %l2 = load <8 x i8>, ptr %p2, align 1
  %e1 = zext <8 x i8> %l1 to <8 x i16>
  %e2 = zext <8 x i8> %l2 to <8 x i16>
  %s2 = shl <8 x i16> %e2, <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
  %or = or <8 x i16> %e1, %s2
  ret <8 x i16> %or
}

; Use the same idoim as X86/or-load.ll @loadCombine_2consecutive to represent a
; sequence of operations that can be replaced by a single double-width load when
; using scalar types but whose logic does not apply to scalable length vectors.
define <vscale x 8 x i16> @or-load-scalable-vector(ptr %p1) {
; CHECK-LABEL: @or-load-scalable-vector(
; CHECK-NEXT:    [[P2:%.*]] = getelementptr i8, ptr [[P1:%.*]], i32 1
; CHECK-NEXT:    [[L1:%.*]] = load <vscale x 8 x i8>, ptr [[P1]], align 1
; CHECK-NEXT:    [[L2:%.*]] = load <vscale x 8 x i8>, ptr [[P2]], align 1
; CHECK-NEXT:    [[E1:%.*]] = zext <vscale x 8 x i8> [[L1]] to <vscale x 8 x i16>
; CHECK-NEXT:    [[E2:%.*]] = zext <vscale x 8 x i8> [[L2]] to <vscale x 8 x i16>
; CHECK-NEXT:    [[S2:%.*]] = shl <vscale x 8 x i16> [[E2]], shufflevector (<vscale x 8 x i16> insertelement (<vscale x 8 x i16> poison, i16 8, i64 0), <vscale x 8 x i16> poison, <vscale x 8 x i32> zeroinitializer)
; CHECK-NEXT:    [[OR:%.*]] = or <vscale x 8 x i16> [[E1]], [[S2]]
; CHECK-NEXT:    ret <vscale x 8 x i16> [[OR]]
;
  %p2 = getelementptr i8, ptr %p1, i32 1
  %l1 = load <vscale x 8 x i8>, ptr %p1, align 1
  %l2 = load <vscale x 8 x i8>, ptr %p2, align 1
  %e1 = zext <vscale x 8 x i8> %l1 to <vscale x 8 x i16>
  %e2 = zext <vscale x 8 x i8> %l2 to <vscale x 8 x i16>
  %s2 = shl <vscale x 8 x i16> %e2, splat (i16 8)
  %or = or <vscale x 8 x i16> %e1, %s2
  ret <vscale x 8 x i16> %or
}
llvm/llvm/test/Transforms/AggressiveInstCombine/vector-or-load.ll
