[SLP][NFC]Add a test with ordering of the operands of unordered loads

Author: alexey-bataev

llvm/test/Transforms/SLPVectorizer/RISCV/unordered-loads-operands.ll

@@ -0,0 +1,71 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S --passes=slp-vectorizer -mtriple=riscv64-unknown-linux-gnu -mattr=+v -slp-threshold=-1000 %s | FileCheck %s
+
+define void @test(ptr %mdct_forward_x) {
+; CHECK-LABEL: define void @test(
+; CHECK-SAME: ptr [[MDCT_FORWARD_X:%.*]]) #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    br label %[[FOR_COND:.*]]
+; CHECK:       [[FOR_COND]]:
+; CHECK-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[MDCT_FORWARD_X]], align 8
+; CHECK-NEXT:    [[ARRAYIDX2_I_I:%.*]] = getelementptr i8, ptr [[TMP0]], i64 32
+; CHECK-NEXT:    [[ADD_PTR_I:%.*]] = getelementptr i8, ptr [[TMP0]], i64 24
+; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <4 x ptr> poison, ptr [[TMP0]], i32 0
+; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <4 x ptr> [[TMP1]], <4 x ptr> poison, <4 x i32> zeroinitializer
+; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i8, <4 x ptr> [[TMP2]], <4 x i64> <i64 28, i64 36, i64 24, i64 28>
+; CHECK-NEXT:    [[TMP4:%.*]] = call <2 x float> @llvm.experimental.vp.strided.load.v2f32.p0.i64(ptr align 4 [[ARRAYIDX2_I_I]], i64 -8, <2 x i1> splat (i1 true), i32 2)
+; CHECK-NEXT:    [[TMP5:%.*]] = shufflevector <4 x ptr> [[TMP2]], <4 x ptr> poison, <2 x i32> zeroinitializer
+; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr i8, <2 x ptr> [[TMP5]], <2 x i64> <i64 48, i64 40>
+; CHECK-NEXT:    [[TMP7:%.*]] = call <2 x float> @llvm.masked.gather.v2f32.v2p0(<2 x ptr> [[TMP6]], i32 4, <2 x i1> splat (i1 true), <2 x float> poison)
+; CHECK-NEXT:    [[TMP8:%.*]] = call <4 x float> @llvm.masked.gather.v4f32.v4p0(<4 x ptr> [[TMP3]], i32 4, <4 x i1> splat (i1 true), <4 x float> poison)
+; CHECK-NEXT:    [[TMP9:%.*]] = shufflevector <2 x float> [[TMP7]], <2 x float> poison, <4 x i32> <i32 0, i32 1, i32 0, i32 0>
+; CHECK-NEXT:    [[TMP10:%.*]] = shufflevector <2 x float> [[TMP4]], <2 x float> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP11:%.*]] = shufflevector <4 x float> <float poison, float poison, float 0.000000e+00, float poison>, <4 x float> [[TMP10]], <4 x i32> <i32 poison, i32 poison, i32 2, i32 4>
+; CHECK-NEXT:    [[TMP12:%.*]] = call <4 x float> @llvm.vector.insert.v4f32.v2f32(<4 x float> [[TMP11]], <2 x float> [[TMP4]], i64 0)
+; CHECK-NEXT:    [[TMP13:%.*]] = fsub <4 x float> [[TMP9]], [[TMP12]]
+; CHECK-NEXT:    [[TMP14:%.*]] = fadd <4 x float> [[TMP9]], [[TMP12]]
+; CHECK-NEXT:    [[TMP15:%.*]] = shufflevector <4 x float> [[TMP13]], <4 x float> [[TMP14]], <4 x i32> <i32 0, i32 1, i32 6, i32 3>
+; CHECK-NEXT:    [[TMP16:%.*]] = fsub <4 x float> zeroinitializer, [[TMP8]]
+; CHECK-NEXT:    [[TMP17:%.*]] = fadd <4 x float> zeroinitializer, [[TMP8]]
+; CHECK-NEXT:    [[TMP18:%.*]] = shufflevector <4 x float> [[TMP16]], <4 x float> [[TMP17]], <4 x i32> <i32 0, i32 1, i32 6, i32 3>
+; CHECK-NEXT:    store float 0.000000e+00, ptr [[ADD_PTR_I]], align 4
+; CHECK-NEXT:    [[TMP19:%.*]] = fsub <4 x float> [[TMP15]], [[TMP18]]
+; CHECK-NEXT:    [[TMP20:%.*]] = fadd <4 x float> [[TMP15]], [[TMP18]]
+; CHECK-NEXT:    [[TMP21:%.*]] = shufflevector <4 x float> [[TMP19]], <4 x float> [[TMP20]], <4 x i32> <i32 0, i32 5, i32 2, i32 3>
+; CHECK-NEXT:    store <4 x float> [[TMP21]], ptr [[ARRAYIDX2_I_I]], align 4
+; CHECK-NEXT:    br label %[[FOR_COND]]
+;
+entry:
+  br label %for.cond
+
+for.cond:
+  %0 = load ptr, ptr %mdct_forward_x, align 8
+  %add.ptr.i = getelementptr i8, ptr %0, i64 24
+  %arrayidx.i.i = getelementptr i8, ptr %0, i64 48
+  %1 = load float, ptr %arrayidx.i.i, align 4
+  %add.i.i = fadd float %1, 0.000000e+00
+  %arrayidx2.i.i = getelementptr i8, ptr %0, i64 32
+  %2 = load float, ptr %arrayidx2.i.i, align 4
+  %sub.i.i = fsub float %1, %2
+  %3 = load float, ptr %add.ptr.i, align 4
+  %add4.i.i = fadd float %3, 0.000000e+00
+  %arrayidx5.i.i = getelementptr i8, ptr %0, i64 40
+  %4 = load float, ptr %arrayidx5.i.i, align 4
+  %sub7.i.i = fsub float %4, %3
+  %sub8.i.i = fsub float %add.i.i, %add4.i.i
+  store float %sub8.i.i, ptr %arrayidx5.i.i, align 4
+  %arrayidx10.i.i = getelementptr i8, ptr %0, i64 28
+  %5 = load float, ptr %arrayidx10.i.i, align 4
+  %sub11.i.i = fsub float 0.000000e+00, %5
+  %arrayidx12.i.i = getelementptr i8, ptr %0, i64 36
+  %6 = load float, ptr %arrayidx12.i.i, align 4
+  %sub13.i.i = fsub float 0.000000e+00, %6
+  store float 0.000000e+00, ptr %add.ptr.i, align 4
+  %sub15.i.i = fsub float %sub.i.i, %sub11.i.i
+  store float %sub15.i.i, ptr %arrayidx2.i.i, align 4
+  %add17.i.i = fadd float %sub7.i.i, %sub13.i.i
+  store float %add17.i.i, ptr %arrayidx12.i.i, align 4
+  %arrayidx20.i.i = getelementptr i8, ptr %0, i64 44
+  store float %sub15.i.i, ptr %arrayidx20.i.i, align 4
+  br label %for.cond
+}