; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5 ; RUN: opt < %s -passes=loop-vectorize,dce,instcombine -force-vector-interleave=1 -force-vector-width=4 -enable-if-conversion -S | FileCheck %s target 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" ; This is the loop in this example: ; ;int function0(int *a, int *b, int start, int end) { ; ; for (int i=start; i b[i]) <------ notice the IF inside the loop. ; k = k * 5 + 3; ; ; a[i] = k; <---- K is a phi node that becomes vector-select. ; } ;} define i32 @function0(ptr nocapture %a, ptr nocapture %b, i32 %start, i32 %end) nounwind uwtable ssp { ; CHECK-LABEL: define i32 @function0( ; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr captures(none) [[B:%.*]], i32 [[START:%.*]], i32 [[END:%.*]]) #[[ATTR0:[0-9]+]] { ; CHECK-NEXT: [[ENTRY:.*:]] ; CHECK-NEXT: [[CMP16:%.*]] = icmp slt i32 [[START]], [[END]] ; CHECK-NEXT: br i1 [[CMP16]], label %[[FOR_BODY_LR_PH:.*]], label %[[FOR_END:.*]] ; CHECK: [[FOR_BODY_LR_PH]]: ; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[START]] to i64 ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[START]], -1 ; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[END]], [[TMP1]] ; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = add nuw nsw i64 [[TMP3]], 1 ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP2]], 3 ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_MEMCHECK:.*]] ; CHECK: [[VECTOR_MEMCHECK]]: ; CHECK-NEXT: [[TMP5:%.*]] = shl nsw i64 [[TMP0]], 2 ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP5]] ; CHECK-NEXT: [[TMP6:%.*]] = xor i32 [[START]], -1 ; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[END]], [[TMP6]] ; CHECK-NEXT: [[TMP8:%.*]] = zext i32 [[TMP7]] to i64 ; CHECK-NEXT: [[TMP9:%.*]] = add nsw i64 [[TMP0]], [[TMP8]] ; CHECK-NEXT: [[TMP10:%.*]] = shl nsw i64 [[TMP9]], 2 ; CHECK-NEXT: [[TMP11:%.*]] = add nsw i64 [[TMP10]], 4 ; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP11]] ; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[B]], i64 [[TMP5]] ; CHECK-NEXT: [[SCEVGEP3:%.*]] = getelementptr i8, ptr [[B]], i64 [[TMP11]] ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[SCEVGEP]], [[SCEVGEP3]] ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[SCEVGEP2]], [[SCEVGEP1]] ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] ; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label %[[SCALAR_PH]], label %[[VECTOR_PH:.*]] ; CHECK: [[VECTOR_PH]]: ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP4]], 8589934588 ; CHECK-NEXT: [[TMP12:%.*]] = add nsw i64 [[N_VEC]], [[TMP0]] ; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] ; CHECK: [[VECTOR_BODY]]: ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ] ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 [[INDEX]], [[TMP0]] ; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[OFFSET_IDX]] ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP13]], align 4, !alias.scope [[META0:![0-9]+]], !noalias [[META3:![0-9]+]] ; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[OFFSET_IDX]] ; CHECK-NEXT: [[WIDE_LOAD4:%.*]] = load <4 x i32>, ptr [[TMP14]], align 4, !alias.scope [[META3]] ; CHECK-NEXT: [[DOTNOT:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], [[WIDE_LOAD4]] ; CHECK-NEXT: [[TMP15:%.*]] = mul <4 x i32> [[WIDE_LOAD]], splat (i32 5) ; CHECK-NEXT: [[TMP16:%.*]] = add <4 x i32> [[TMP15]], splat (i32 3) ; CHECK-NEXT: [[PREDPHI:%.*]] = select <4 x i1> [[DOTNOT]], <4 x i32> [[TMP16]], <4 x i32> [[WIDE_LOAD]] ; CHECK-NEXT: store <4 x i32> [[PREDPHI]], ptr [[TMP13]], align 4, !alias.scope [[META0]], !noalias [[META3]] ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 ; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] ; CHECK-NEXT: br i1 [[TMP17]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]] ; CHECK: [[MIDDLE_BLOCK]]: ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP4]], [[N_VEC]] ; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_END_LOOPEXIT:.*]], label %[[SCALAR_PH]] ; CHECK: [[SCALAR_PH]]: ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[TMP12]], %[[MIDDLE_BLOCK]] ], [ [[TMP0]], %[[FOR_BODY_LR_PH]] ], [ [[TMP0]], %[[VECTOR_MEMCHECK]] ] ; CHECK-NEXT: br label %[[FOR_BODY:.*]] ; CHECK: [[FOR_BODY]]: ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[IF_END:.*]] ] ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]] ; CHECK-NEXT: [[TMP18:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 ; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[INDVARS_IV]] ; CHECK-NEXT: [[TMP19:%.*]] = load i32, ptr [[ARRAYIDX4]], align 4 ; CHECK-NEXT: [[CMP5:%.*]] = icmp sgt i32 [[TMP18]], [[TMP19]] ; CHECK-NEXT: br i1 [[CMP5]], label %[[IF_THEN:.*]], label %[[IF_END]] ; CHECK: [[IF_THEN]]: ; CHECK-NEXT: [[MUL:%.*]] = mul i32 [[TMP18]], 5 ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[MUL]], 3 ; CHECK-NEXT: br label %[[IF_END]] ; CHECK: [[IF_END]]: ; CHECK-NEXT: [[K_0:%.*]] = phi i32 [ [[ADD]], %[[IF_THEN]] ], [ [[TMP18]], %[[FOR_BODY]] ] ; CHECK-NEXT: store i32 [[K_0]], ptr [[ARRAYIDX]], align 4 ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 ; CHECK-NEXT: [[TMP20:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[END]], [[TMP20]] ; CHECK-NEXT: br i1 [[CMP]], label %[[FOR_BODY]], label %[[FOR_END_LOOPEXIT]], !llvm.loop [[LOOP8:![0-9]+]] ; CHECK: [[FOR_END_LOOPEXIT]]: ; CHECK-NEXT: br label %[[FOR_END]] ; CHECK: [[FOR_END]]: ; CHECK-NEXT: ret i32 undef ; entry: %cmp16 = icmp slt i32 %start, %end br i1 %cmp16, label %for.body.lr.ph, label %for.end for.body.lr.ph: %0 = sext i32 %start to i64 br label %for.body for.body: %indvars.iv = phi i64 [ %0, %for.body.lr.ph ], [ %indvars.iv.next, %if.end ] %arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv %1 = load i32, ptr %arrayidx, align 4 %arrayidx4 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv %2 = load i32, ptr %arrayidx4, align 4 %cmp5 = icmp sgt i32 %1, %2 br i1 %cmp5, label %if.then, label %if.end if.then: %mul = mul i32 %1, 5 %add = add i32 %mul, 3 br label %if.end if.end: %k.0 = phi i32 [ %add, %if.then ], [ %1, %for.body ] store i32 %k.0, ptr %arrayidx, align 4 %indvars.iv.next = add i64 %indvars.iv, 1 %3 = trunc i64 %indvars.iv.next to i32 %cmp = icmp slt i32 %3, %end br i1 %cmp, label %for.body, label %for.end for.end: ret i32 undef } ; int func(int *A, int n) { ; unsigned sum = 0; ; for (int i = 0; i < n; ++i) ; if (A[i] > 30) ; sum += A[i] + 2; ; ; return sum; ; } define i32 @reduction_func(ptr nocapture %A, i32 %n) nounwind uwtable readonly ssp { ; CHECK-LABEL: define i32 @reduction_func( ; CHECK-SAME: ptr captures(none) [[A:%.*]], i32 [[N:%.*]]) #[[ATTR1:[0-9]+]] { ; CHECK-NEXT: [[ENTRY:.*]]: ; CHECK-NEXT: [[CMP10:%.*]] = icmp sgt i32 [[N]], 0 ; CHECK-NEXT: br i1 [[CMP10]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_END:.*]] ; CHECK: [[FOR_BODY_PREHEADER]]: ; CHECK-NEXT: [[TMP0:%.*]] = zext nneg i32 [[N]] to i64 ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], 4 ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]] ; CHECK: [[VECTOR_PH]]: ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP0]], 2147483644 ; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] ; CHECK: [[VECTOR_BODY]]: ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ] ; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[PREDPHI:%.*]], %[[VECTOR_BODY]] ] ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDEX]] ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP1]], align 4 ; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], splat (i32 30) ; CHECK-NEXT: [[TMP3:%.*]] = add <4 x i32> [[VEC_PHI]], splat (i32 2) ; CHECK-NEXT: [[TMP4:%.*]] = add <4 x i32> [[TMP3]], [[WIDE_LOAD]] ; CHECK-NEXT: [[PREDPHI]] = select <4 x i1> [[TMP2]], <4 x i32> [[TMP4]], <4 x i32> [[VEC_PHI]] ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] ; CHECK-NEXT: br i1 [[TMP5]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]] ; CHECK: [[MIDDLE_BLOCK]]: ; CHECK-NEXT: [[TMP6:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PREDPHI]]) ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[TMP0]] ; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_END_LOOPEXIT:.*]], label %[[SCALAR_PH]] ; CHECK: [[SCALAR_PH]]: ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ] ; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP6]], %[[MIDDLE_BLOCK]] ], [ 0, %[[FOR_BODY_PREHEADER]] ] ; CHECK-NEXT: br label %[[FOR_BODY:.*]] ; CHECK: [[FOR_BODY]]: ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], %[[FOR_INC:.*]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ] ; CHECK-NEXT: [[SUM_011:%.*]] = phi i32 [ [[SUM_1:%.*]], %[[FOR_INC]] ], [ [[BC_MERGE_RDX]], %[[SCALAR_PH]] ] ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]] ; CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP7]], 30 ; CHECK-NEXT: br i1 [[CMP1]], label %[[IF_THEN:.*]], label %[[FOR_INC]] ; CHECK: [[IF_THEN]]: ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[SUM_011]], 2 ; CHECK-NEXT: [[ADD4:%.*]] = add i32 [[ADD]], [[TMP7]] ; CHECK-NEXT: br label %[[FOR_INC]] ; CHECK: [[FOR_INC]]: ; CHECK-NEXT: [[SUM_1]] = phi i32 [ [[ADD4]], %[[IF_THEN]] ], [ [[SUM_011]], %[[FOR_BODY]] ] ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[N]], [[LFTR_WIDEIV]] ; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END_LOOPEXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]] ; CHECK: [[FOR_END_LOOPEXIT]]: ; CHECK-NEXT: [[SUM_1_LCSSA:%.*]] = phi i32 [ [[SUM_1]], %[[FOR_INC]] ], [ [[TMP6]], %[[MIDDLE_BLOCK]] ] ; CHECK-NEXT: br label %[[FOR_END]] ; CHECK: [[FOR_END]]: ; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[SUM_1_LCSSA]], %[[FOR_END_LOOPEXIT]] ] ; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]] ; entry: %cmp10 = icmp sgt i32 %n, 0 br i1 %cmp10, label %for.body, label %for.end for.body: ; preds = %entry, %for.inc %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] %sum.011 = phi i32 [ %sum.1, %for.inc ], [ 0, %entry ] %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv %0 = load i32, ptr %arrayidx, align 4 %cmp1 = icmp sgt i32 %0, 30 br i1 %cmp1, label %if.then, label %for.inc if.then: ; preds = %for.body %add = add i32 %sum.011, 2 %add4 = add i32 %add, %0 br label %for.inc for.inc: ; preds = %for.body, %if.then %sum.1 = phi i32 [ %add4, %if.then ], [ %sum.011, %for.body ] %indvars.iv.next = add i64 %indvars.iv, 1 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 %exitcond = icmp eq i32 %lftr.wideiv, %n br i1 %exitcond, label %for.end, label %for.body for.end: ; preds = %for.inc, %entry %sum.0.lcssa = phi i32 [ 0, %entry ], [ %sum.1, %for.inc ] ret i32 %sum.0.lcssa } @a = common global [1 x ptr] zeroinitializer, align 8 @c = common global ptr null, align 8 ; We use to if convert this loop. This is not safe because there is a trapping ; constant expression. ; PR16729 ; Handle PHI with single incoming value having a full mask. ; PR34523 define void @PR34523() { ; CHECK-LABEL: define void @PR34523() { ; CHECK-NEXT: [[BB1:.*:]] ; CHECK-NEXT: br i1 true, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]] ; CHECK: [[VECTOR_PH]]: ; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] ; CHECK: [[VECTOR_BODY]]: ; CHECK-NEXT: br i1 poison, label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]] ; CHECK: [[MIDDLE_BLOCK]]: ; CHECK-NEXT: br i1 poison, label %[[BB5:.*]], label %[[SCALAR_PH]] ; CHECK: [[SCALAR_PH]]: ; CHECK-NEXT: br label %[[BB2:.*]] ; CHECK: [[BB2]]: ; CHECK-NEXT: [[I:%.*]] = phi i16 [ undef, %[[SCALAR_PH]] ], [ [[_TMP2:%.*]], %[[BB4:.*]] ] ; CHECK-NEXT: br label %[[BB3:.*]] ; CHECK: [[BB3]]: ; CHECK-NEXT: br label %[[BB4]] ; CHECK: [[BB4]]: ; CHECK-NEXT: [[_TMP2]] = add i16 [[I]], 1 ; CHECK-NEXT: [[_TMP3:%.*]] = icmp slt i16 [[_TMP2]], 2 ; CHECK-NEXT: br i1 [[_TMP3]], label %[[BB2]], label %[[BB5]], !llvm.loop [[LOOP12:![0-9]+]] ; CHECK: [[BB5]]: ; CHECK-NEXT: unreachable ; bb1: br label %bb2 bb2: ; preds = %bb4, %bb1 %i = phi i16 [ undef, %bb1 ], [ %_tmp2, %bb4 ] br label %bb3 bb3: ; preds = %bb2 %_tmp1 = phi ptr [ undef, %bb2 ] br label %bb4 bb4: ; preds = %bb3 %_tmp2 = add i16 %i, 1 %_tmp3 = icmp slt i16 %_tmp2, 2 br i1 %_tmp3, label %bb2, label %bb5 bb5: ; preds = %bb4 unreachable }