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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S %s | FileCheck %s3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1-p:16:16:16:16"5 6declare void @init(ptr nocapture nofree)7 8 9; Test where offset relative to alloca is negative and we shouldn't10; treat predicated loads as being always dereferenceable.11define i8 @test_negative_off(i16 %len, ptr %test_base) {12; CHECK-LABEL: @test_negative_off(13; CHECK-NEXT: entry:14; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [64638 x i8], align 115; CHECK-NEXT: call void @init(ptr [[ALLOCA]])16; CHECK-NEXT: br label [[VECTOR_PH:%.*]]17; CHECK: vector.ph:18; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]19; CHECK: vector.body:20; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE2:%.*]] ]21; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i8> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP18:%.*]], [[PRED_LOAD_CONTINUE2]] ]22; CHECK-NEXT: [[DOTCAST:%.*]] = trunc i32 [[INDEX]] to i1623; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i16 -1000, [[DOTCAST]]24; CHECK-NEXT: [[TMP0:%.*]] = add i16 [[OFFSET_IDX]], 025; CHECK-NEXT: [[TMP1:%.*]] = add i16 [[OFFSET_IDX]], 126; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i1, ptr [[TEST_BASE:%.*]], i16 [[TMP0]]27; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i1, ptr [[TEST_BASE]], i16 [[TMP1]]28; CHECK-NEXT: [[TMP4:%.*]] = load i1, ptr [[TMP2]], align 129; CHECK-NEXT: [[TMP5:%.*]] = load i1, ptr [[TMP3]], align 130; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x i1> poison, i1 [[TMP4]], i32 031; CHECK-NEXT: [[TMP7:%.*]] = insertelement <2 x i1> [[TMP6]], i1 [[TMP5]], i32 132; CHECK-NEXT: br i1 [[TMP4]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]]33; CHECK: pred.load.if:34; CHECK-NEXT: [[TMP9:%.*]] = getelementptr i8, ptr [[ALLOCA]], i16 [[TMP0]]35; CHECK-NEXT: [[TMP10:%.*]] = load i8, ptr [[TMP9]], align 136; CHECK-NEXT: [[TMP11:%.*]] = insertelement <2 x i8> poison, i8 [[TMP10]], i32 037; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]]38; CHECK: pred.load.continue:39; CHECK-NEXT: [[TMP12:%.*]] = phi <2 x i8> [ poison, [[VECTOR_BODY]] ], [ [[TMP11]], [[PRED_LOAD_IF]] ]40; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2]]41; CHECK: pred.load.if1:42; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[ALLOCA]], i16 [[TMP1]]43; CHECK-NEXT: [[TMP15:%.*]] = load i8, ptr [[TMP14]], align 144; CHECK-NEXT: [[TMP16:%.*]] = insertelement <2 x i8> [[TMP12]], i8 [[TMP15]], i32 145; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE2]]46; CHECK: pred.load.continue2:47; CHECK-NEXT: [[TMP17:%.*]] = phi <2 x i8> [ [[TMP12]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP16]], [[PRED_LOAD_IF1]] ]48; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP7]], <2 x i8> [[TMP17]], <2 x i8> zeroinitializer49; CHECK-NEXT: [[TMP18]] = add <2 x i8> [[VEC_PHI]], [[PREDPHI]]50; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 251; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1252; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]53; CHECK: middle.block:54; CHECK-NEXT: [[TMP20:%.*]] = call i8 @llvm.vector.reduce.add.v2i8(<2 x i8> [[TMP18]])55; CHECK-NEXT: br label [[LATCH:%.*]]56; CHECK: loop_exit:57; CHECK-NEXT: ret i8 [[TMP20]]58;59entry:60 %alloca = alloca [64638 x i8]61 call void @init(ptr %alloca)62 br label %loop63loop:64 %iv = phi i16 [ -1000, %entry ], [ %iv.next, %latch ]65 %accum = phi i8 [ 0, %entry ], [ %accum.next, %latch ]66 %iv.next = add i16 %iv, 167 %test_addr = getelementptr inbounds i1, ptr %test_base, i16 %iv68 %earlycnd = load i1, ptr %test_addr69 br i1 %earlycnd, label %pred, label %latch70pred:71 %addr = getelementptr i8, ptr %alloca, i16 %iv72 %val = load i8, ptr %addr73 br label %latch74latch:75 %val.phi = phi i8 [ 0, %loop ], [ %val, %pred ]76 %accum.next = add i8 %accum, %val.phi77 %exit = icmp ugt i16 %iv, -99078 br i1 %exit, label %loop_exit, label %loop79loop_exit:80 ret i8 %accum.next81}82