1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 2; RUN: opt < %s -passes=loop-vectorize,dce,instcombine -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s 3 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 5 6@b = common global [2048 x i32] zeroinitializer, align 16 7@c = common global [2048 x i32] zeroinitializer, align 16 8@a = common global [2048 x i32] zeroinitializer, align 16 9 10define void @example1(i32 %n) nounwind uwtable ssp { 11; CHECK-LABEL: define void @example1( 12; CHECK-SAME: i32 [[N:%.*]]) #[[ATTR0:[0-9]+]] { 13; CHECK-NEXT: entry: 14; CHECK-NEXT: [[N4:%.*]] = shl i32 [[N]], 2 15; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N4]], -4 16; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[TMP0]] to i64 17; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] 18; CHECK: vector.ph: 19; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 20; CHECK: vector.body: 21; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 22; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds [2048 x i32], ptr @b, i64 0, i64 [[INDEX]] 23; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4 24; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [2048 x i32], ptr @c, i64 0, i64 [[INDEX]] 25; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <4 x i32>, ptr [[TMP3]], align 4 26; CHECK-NEXT: [[TMP4:%.*]] = add nsw <4 x i32> [[WIDE_LOAD1]], [[WIDE_LOAD]] 27; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [2048 x i32], ptr @a, i64 0, i64 [[INDEX]] 28; CHECK-NEXT: store <4 x i32> [[TMP4]], ptr [[TMP5]], align 4 29; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 30; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX]], [[TMP1]] 31; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] 32; CHECK: middle.block: 33; CHECK-NEXT: br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]] 34; CHECK: scalar.ph: 35; CHECK-NEXT: br label [[LOOP:%.*]] 36; CHECK: loop: 37; CHECK-NEXT: br i1 poison, label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP3:![0-9]+]] 38; CHECK: exit: 39; CHECK-NEXT: ret void 40; 41entry: 42 %n4 = shl i32 %n, 2 43 br label %loop 44 45loop: 46 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %loop ] 47 %gep1 = getelementptr inbounds [2048 x i32], ptr @b, i64 0, i64 %indvars.iv 48 %load1 = load i32, ptr %gep1, align 4 49 %gep2 = getelementptr inbounds [2048 x i32], ptr @c, i64 0, i64 %indvars.iv 50 %load2 = load i32, ptr %gep2, align 4 51 %add = add nsw i32 %load2, %load1 52 %gep3 = getelementptr inbounds [2048 x i32], ptr @a, i64 0, i64 %indvars.iv 53 store i32 %add, ptr %gep3, align 4 54 %indvars.iv.next = add i64 %indvars.iv, 1 55 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 56 %exitcond = icmp eq i32 %lftr.wideiv, %n4 57 br i1 %exitcond, label %exit, label %loop 58 59exit: 60 ret void 61} 62 63