1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 ; Test that the reverse is eliminated if the output and all the inputs
5 ; of the instruction are calls to reverse.
6 define <vscale x 4 x i32> @binop_reverse(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
7 ; CHECK-LABEL: @binop_reverse(
8 ; CHECK-NEXT: [[ADD1:%.*]] = add <vscale x 4 x i32> [[A:%.*]], [[B:%.*]]
9 ; CHECK-NEXT: ret <vscale x 4 x i32> [[ADD1]]
11 %reva = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
12 %revb = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
13 %add = add <vscale x 4 x i32> %reva, %revb
14 %revadd = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %add)
15 ret <vscale x 4 x i32> %revadd
18 define <vscale x 4 x i32> @binop_reverse_splat_RHS(<vscale x 4 x i32> %a, i32 %b) {
19 ; CHECK-LABEL: @binop_reverse_splat_RHS(
20 ; CHECK-NEXT: [[SPLAT_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
21 ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[SPLAT_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
22 ; CHECK-NEXT: [[UDIV1:%.*]] = udiv <vscale x 4 x i32> [[A:%.*]], [[SPLAT]]
23 ; CHECK-NEXT: ret <vscale x 4 x i32> [[UDIV1]]
25 %reva = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
26 %splat_insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
27 %splat = shufflevector <vscale x 4 x i32> %splat_insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
28 %udiv = udiv <vscale x 4 x i32> %reva, %splat
29 %revadd = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %udiv)
30 ret <vscale x 4 x i32> %revadd
33 define <vscale x 4 x i32> @binop_reverse_splat_LHS(<vscale x 4 x i32> %a, i32 %b) {
34 ; CHECK-LABEL: @binop_reverse_splat_LHS(
35 ; CHECK-NEXT: [[SPLAT_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
36 ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[SPLAT_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
37 ; CHECK-NEXT: [[UDIV1:%.*]] = udiv <vscale x 4 x i32> [[SPLAT]], [[A:%.*]]
38 ; CHECK-NEXT: ret <vscale x 4 x i32> [[UDIV1]]
40 %reva = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
41 %splat_insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
42 %splat = shufflevector <vscale x 4 x i32> %splat_insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
43 %udiv = udiv <vscale x 4 x i32> %splat, %reva
44 %revadd = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %udiv)
45 ret <vscale x 4 x i32> %revadd
48 define <vscale x 4 x float> @unop_reverse(<vscale x 4 x float> %a) {
49 ; CHECK-LABEL: @unop_reverse(
50 ; CHECK-NEXT: [[NEG1:%.*]] = fneg fast <vscale x 4 x float> [[A:%.*]]
51 ; CHECK-NEXT: ret <vscale x 4 x float> [[NEG1]]
53 %reva = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
54 %neg = fneg fast <vscale x 4 x float> %reva
55 %revneg = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %neg)
56 ret <vscale x 4 x float> %revneg
59 declare <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float>)
60 declare <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32>)