1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -enable-if-conversion -dce -instcombine -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 6define i32 @foo(i32* nocapture %A, i32* nocapture %B, i32 %n) { 7; CHECK-LABEL: @foo( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: [[CMP26:%.*]] = icmp sgt i32 [[N:%.*]], 0 10; CHECK-NEXT: br i1 [[CMP26]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 11; CHECK: for.body.preheader: 12; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 13; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[TMP0]] to i64 14; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1 15; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0]], 3 16; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] 17; CHECK: vector.memcheck: 18; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[N]], -1 19; CHECK-NEXT: [[TMP4:%.*]] = zext i32 [[TMP3]] to i64 20; CHECK-NEXT: [[TMP5:%.*]] = add nuw nsw i64 [[TMP4]], 1 21; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i32, i32* [[A:%.*]], i64 [[TMP5]] 22; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr i32, i32* [[B:%.*]], i64 [[TMP5]] 23; CHECK-NEXT: [[BOUND0:%.*]] = icmp ugt i32* [[SCEVGEP4]], [[A]] 24; CHECK-NEXT: [[BOUND1:%.*]] = icmp ugt i32* [[SCEVGEP]], [[B]] 25; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] 26; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] 27; CHECK: vector.ph: 28; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP2]], 8589934588 29; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 30; CHECK: vector.body: 31; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 32; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDEX]] 33; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <4 x i32>* 34; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP7]], align 4, !alias.scope !0, !noalias !3 35; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDEX]] 36; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <4 x i32>* 37; CHECK-NEXT: [[WIDE_LOAD6:%.*]] = load <4 x i32>, <4 x i32>* [[TMP9]], align 4, !alias.scope !3 38; CHECK-NEXT: [[TMP10:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], [[WIDE_LOAD6]] 39; CHECK-NEXT: [[TMP11:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], <i32 19, i32 19, i32 19, i32 19> 40; CHECK-NEXT: [[TMP12:%.*]] = icmp slt <4 x i32> [[WIDE_LOAD6]], <i32 4, i32 4, i32 4, i32 4> 41; CHECK-NEXT: [[TMP13:%.*]] = select <4 x i1> [[TMP12]], <4 x i32> <i32 4, i32 4, i32 4, i32 4>, <4 x i32> <i32 5, i32 5, i32 5, i32 5> 42; CHECK-NEXT: [[TMP14:%.*]] = and <4 x i1> [[TMP11]], [[TMP10]] 43; CHECK-NEXT: [[TMP15:%.*]] = xor <4 x i1> [[TMP11]], <i1 true, i1 true, i1 true, i1 true> 44; CHECK-NEXT: [[TMP16:%.*]] = and <4 x i1> [[TMP10]], [[TMP15]] 45; CHECK-NEXT: [[PREDPHI:%.*]] = select <4 x i1> [[TMP14]], <4 x i32> <i32 3, i32 3, i32 3, i32 3>, <4 x i32> <i32 9, i32 9, i32 9, i32 9> 46; CHECK-NEXT: [[PREDPHI7:%.*]] = select <4 x i1> [[TMP16]], <4 x i32> [[TMP13]], <4 x i32> [[PREDPHI]] 47; CHECK-NEXT: [[TMP17:%.*]] = bitcast i32* [[TMP6]] to <4 x i32>* 48; CHECK-NEXT: store <4 x i32> [[PREDPHI7]], <4 x i32>* [[TMP17]], align 4, !alias.scope !0, !noalias !3 49; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 50; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 51; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP5:!llvm.loop !.*]] 52; CHECK: middle.block: 53; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]] 54; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]] 55; CHECK: scalar.ph: 56; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ], [ 0, [[VECTOR_MEMCHECK]] ] 57; CHECK-NEXT: br label [[FOR_BODY:%.*]] 58; CHECK: for.body: 59; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[IF_END14:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] 60; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[INDVARS_IV]] 61; CHECK-NEXT: [[TMP19:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 62; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV]] 63; CHECK-NEXT: [[TMP20:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4 64; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[TMP19]], [[TMP20]] 65; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_END14]] 66; CHECK: if.then: 67; CHECK-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[TMP19]], 19 68; CHECK-NEXT: br i1 [[CMP6]], label [[IF_END14]], label [[IF_ELSE:%.*]] 69; CHECK: if.else: 70; CHECK-NEXT: [[CMP10:%.*]] = icmp slt i32 [[TMP20]], 4 71; CHECK-NEXT: [[DOT:%.*]] = select i1 [[CMP10]], i32 4, i32 5 72; CHECK-NEXT: br label [[IF_END14]] 73; CHECK: if.end14: 74; CHECK-NEXT: [[X_0:%.*]] = phi i32 [ 9, [[FOR_BODY]] ], [ 3, [[IF_THEN]] ], [ [[DOT]], [[IF_ELSE]] ] 75; CHECK-NEXT: store i32 [[X_0]], i32* [[ARRAYIDX]], align 4 76; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 77; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 78; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] 79; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], [[LOOP7:!llvm.loop !.*]] 80; CHECK: for.end.loopexit: 81; CHECK-NEXT: br label [[FOR_END]] 82; CHECK: for.end: 83; CHECK-NEXT: ret i32 undef 84; 85entry: 86 %cmp26 = icmp sgt i32 %n, 0 87 br i1 %cmp26, label %for.body, label %for.end 88 89for.body: 90 %indvars.iv = phi i64 [ %indvars.iv.next, %if.end14 ], [ 0, %entry ] 91 %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv 92 %0 = load i32, i32* %arrayidx, align 4 93 %arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv 94 %1 = load i32, i32* %arrayidx2, align 4 95 %cmp3 = icmp sgt i32 %0, %1 96 br i1 %cmp3, label %if.then, label %if.end14 97 98if.then: 99 %cmp6 = icmp sgt i32 %0, 19 100 br i1 %cmp6, label %if.end14, label %if.else 101 102if.else: 103 %cmp10 = icmp slt i32 %1, 4 104 %. = select i1 %cmp10, i32 4, i32 5 105 br label %if.end14 106 107if.end14: 108 %x.0 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %., %if.else ] ; <------------- A PHI with 3 entries that we can still vectorize. 109 store i32 %x.0, i32* %arrayidx, align 4 110 %indvars.iv.next = add i64 %indvars.iv, 1 111 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 112 %exitcond = icmp eq i32 %lftr.wideiv, %n 113 br i1 %exitcond, label %for.end, label %for.body 114 115for.end: 116 ret i32 undef 117} 118 119