1; RUN: opt < %s -scev-aa -loop-vectorize -print-alias-sets -S -o - 2>&1 | FileCheck %s 2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 3target triple = "x86_64-unknown-linux-gnu" 4 5; PR25281 6; Just check that we don't crash on this test. 7; CHECK-LABEL: @foo 8define void @foo(float** noalias nocapture readonly %in, i32* noalias nocapture readonly %isCompressed, float* noalias nocapture readonly %out) { 9entry_block: 10 %tmp = getelementptr float*, float** %in, i32 0 11 %in_0 = load float*, float** %tmp, !alias.scope !0 12 %tmp1 = getelementptr i32, i32* %isCompressed, i32 0 13 %isCompressed_0 = load i32, i32* %tmp1, !alias.scope !1 14 %tmp2 = getelementptr float*, float** %in, i32 1 15 %in_1 = load float*, float** %tmp2, !alias.scope !2 16 %tmp3 = getelementptr i32, i32* %isCompressed, i32 1 17 %isCompressed_1 = load i32, i32* %tmp3, !alias.scope !3 18 br label %for_each_frames 19 20for_each_frames: 21 %frameIndex = phi i32 [ 0, %entry_block ], [ %nextFrameIndex, %for_each_frames_end ] 22 %nextFrameIndex = add nuw nsw i32 %frameIndex, 2 23 br label %for_each_channel 24 25for_each_channel: 26 %channelIndex = phi i32 [ 0, %for_each_frames ], [ %nextChannelIndex, %for_each_channel ] 27 %nextChannelIndex = add nuw nsw i32 %channelIndex, 1 28 %tmp4 = add i32 %frameIndex, %channelIndex 29 %tmp5 = xor i32 %isCompressed_0, 1 30 %tmp6 = mul i32 %frameIndex, %tmp5 31 %offset0 = add i32 %tmp6, %channelIndex 32 %tmp7 = getelementptr float, float* %in_0, i32 %offset0 33 %in_0_index = load float, float* %tmp7, align 4, !alias.scope !4 34 %tmp8 = xor i32 %isCompressed_1, 1 35 %tmp9 = mul i32 %frameIndex, %tmp8 36 %offset1 = add i32 %tmp9, %channelIndex 37 %tmp10 = getelementptr float, float* %in_1, i32 %offset1 38 %in_1_index = load float, float* %tmp10, align 4, !alias.scope !5 39 %tmp11 = fadd float %in_0_index, %in_1_index 40 %tmp12 = getelementptr float, float* %out, i32 %tmp4 41 store float %tmp11, float* %tmp12, align 4, !alias.noalias !6 42 %tmp13 = icmp eq i32 %nextChannelIndex, 2 43 br i1 %tmp13, label %for_each_frames_end, label %for_each_channel 44 45for_each_frames_end: 46 %tmp14 = icmp eq i32 %nextFrameIndex, 512 47 br i1 %tmp14, label %return, label %for_each_frames 48 49return: 50 ret void 51} 52 53!0 = distinct !{!0} 54!1 = distinct !{!1, !0} 55!2 = distinct !{!2, !0} 56!3 = distinct !{!3, !0} 57!4 = distinct !{!4, !0} 58!5 = distinct !{!5, !0} 59!6 = !{!2, !3, !4, !5, !1} 60