| ; RUN: opt < %s -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -dce -instcombine -S | FileCheck %s |
| ; RUN: opt < %s -loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -dce -instcombine -S | FileCheck %s --check-prefix=UNROLL |
| |
| target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" |
| |
| ; CHECK-LABEL: @recurrence_1 |
| ; |
| ; void recurrence_1(int *a, int *b, int n) { |
| ; for(int i = 0; i < n; i++) |
| ; b[i] = a[i] + a[i - 1] |
| ; } |
| ; |
| ; CHECK: vector.ph: |
| ; CHECK: %vector.recur.init = insertelement <4 x i32> undef, i32 %pre_load, i32 3 |
| ; |
| ; CHECK: vector.body: |
| ; CHECK: %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ [[L1:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; CHECK: [[L1]] = load <4 x i32> |
| ; CHECK: {{.*}} = shufflevector <4 x i32> %vector.recur, <4 x i32> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; CHECK: middle.block: |
| ; CHECK: %vector.recur.extract = extractelement <4 x i32> [[L1]], i32 3 |
| ; |
| ; CHECK: scalar.ph: |
| ; CHECK: %scalar.recur.init = phi i32 [ %vector.recur.extract, %middle.block ], [ %pre_load, %vector.memcheck ], [ %pre_load, %min.iters.checked ], [ %pre_load, %for.preheader ] |
| ; |
| ; CHECK: scalar.body: |
| ; CHECK: %scalar.recur = phi i32 [ %scalar.recur.init, %scalar.ph ], [ {{.*}}, %scalar.body ] |
| ; |
| ; UNROLL: vector.body: |
| ; UNROLL: %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ [[L2:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; UNROLL: [[L1:%[a-zA-Z0-9.]+]] = load <4 x i32> |
| ; UNROLL: [[L2]] = load <4 x i32> |
| ; UNROLL: {{.*}} = shufflevector <4 x i32> %vector.recur, <4 x i32> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; UNROLL: {{.*}} = shufflevector <4 x i32> [[L1]], <4 x i32> [[L2]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; UNROLL: middle.block: |
| ; UNROLL: %vector.recur.extract = extractelement <4 x i32> [[L2]], i32 3 |
| ; |
| define void @recurrence_1(i32* nocapture readonly %a, i32* nocapture %b, i32 %n) { |
| entry: |
| br label %for.preheader |
| |
| for.preheader: |
| %arrayidx.phi.trans.insert = getelementptr inbounds i32, i32* %a, i64 0 |
| %pre_load = load i32, i32* %arrayidx.phi.trans.insert |
| br label %scalar.body |
| |
| scalar.body: |
| %0 = phi i32 [ %pre_load, %for.preheader ], [ %1, %scalar.body ] |
| %indvars.iv = phi i64 [ 0, %for.preheader ], [ %indvars.iv.next, %scalar.body ] |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %arrayidx32 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv.next |
| %1 = load i32, i32* %arrayidx32 |
| %arrayidx34 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %add35 = add i32 %1, %0 |
| store i32 %add35, i32* %arrayidx34 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.exit, label %scalar.body |
| |
| for.exit: |
| ret void |
| } |
| |
| ; CHECK-LABEL: @recurrence_2 |
| ; |
| ; int recurrence_2(int *a, int n) { |
| ; int minmax; |
| ; for (int i = 0; i < n; ++i) |
| ; minmax = min(minmax, max(a[i] - a[i-1], 0)); |
| ; return minmax; |
| ; } |
| ; |
| ; CHECK: vector.ph: |
| ; CHECK: %vector.recur.init = insertelement <4 x i32> undef, i32 %.pre, i32 3 |
| ; |
| ; CHECK: vector.body: |
| ; CHECK: %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ [[L1:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; CHECK: [[L1]] = load <4 x i32> |
| ; CHECK: {{.*}} = shufflevector <4 x i32> %vector.recur, <4 x i32> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; CHECK: middle.block: |
| ; CHECK: %vector.recur.extract = extractelement <4 x i32> [[L1]], i32 3 |
| ; |
| ; CHECK: scalar.ph: |
| ; CHECK: %scalar.recur.init = phi i32 [ %vector.recur.extract, %middle.block ], [ %.pre, %min.iters.checked ], [ %.pre, %for.preheader ] |
| ; |
| ; CHECK: scalar.body: |
| ; CHECK: %scalar.recur = phi i32 [ %scalar.recur.init, %scalar.ph ], [ {{.*}}, %scalar.body ] |
| ; |
| ; UNROLL: vector.body: |
| ; UNROLL: %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ [[L2:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; UNROLL: [[L1:%[a-zA-Z0-9.]+]] = load <4 x i32> |
| ; UNROLL: [[L2]] = load <4 x i32> |
| ; UNROLL: {{.*}} = shufflevector <4 x i32> %vector.recur, <4 x i32> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; UNROLL: {{.*}} = shufflevector <4 x i32> [[L1]], <4 x i32> [[L2]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; UNROLL: middle.block: |
| ; UNROLL: %vector.recur.extract = extractelement <4 x i32> [[L2]], i32 3 |
| ; |
| define i32 @recurrence_2(i32* nocapture readonly %a, i32 %n) { |
| entry: |
| %cmp27 = icmp sgt i32 %n, 0 |
| br i1 %cmp27, label %for.preheader, label %for.cond.cleanup |
| |
| for.preheader: |
| %arrayidx2.phi.trans.insert = getelementptr inbounds i32, i32* %a, i64 -1 |
| %.pre = load i32, i32* %arrayidx2.phi.trans.insert, align 4 |
| br label %scalar.body |
| |
| for.cond.cleanup.loopexit: |
| %minmax.0.cond.lcssa = phi i32 [ %minmax.0.cond, %scalar.body ] |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: |
| %minmax.0.lcssa = phi i32 [ undef, %entry ], [ %minmax.0.cond.lcssa, %for.cond.cleanup.loopexit ] |
| ret i32 %minmax.0.lcssa |
| |
| scalar.body: |
| %0 = phi i32 [ %.pre, %for.preheader ], [ %1, %scalar.body ] |
| %indvars.iv = phi i64 [ 0, %for.preheader ], [ %indvars.iv.next, %scalar.body ] |
| %minmax.028 = phi i32 [ undef, %for.preheader ], [ %minmax.0.cond, %scalar.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx, align 4 |
| %sub3 = sub nsw i32 %1, %0 |
| %cmp4 = icmp sgt i32 %sub3, 0 |
| %cond = select i1 %cmp4, i32 %sub3, i32 0 |
| %cmp5 = icmp slt i32 %minmax.028, %cond |
| %minmax.0.cond = select i1 %cmp5, i32 %minmax.028, i32 %cond |
| %indvars.iv.next = add nuw nsw 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.cond.cleanup.loopexit, label %scalar.body |
| } |
| |
| ; CHECK-LABEL: @recurrence_3 |
| ; |
| ; void recurrence_3(short *a, double *b, int n, float f, short p) { |
| ; b[0] = (double)a[0] - f * (double)p; |
| ; for (int i = 1; i < n; i++) |
| ; b[i] = (double)a[i] - f * (double)a[i - 1]; |
| ; } |
| ; |
| ; |
| ; CHECK: vector.ph: |
| ; CHECK: %vector.recur.init = insertelement <4 x i16> undef, i16 %0, i32 3 |
| ; |
| ; CHECK: vector.body: |
| ; CHECK: %vector.recur = phi <4 x i16> [ %vector.recur.init, %vector.ph ], [ [[L1:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; CHECK: [[L1]] = load <4 x i16> |
| ; CHECK: {{.*}} = shufflevector <4 x i16> %vector.recur, <4 x i16> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; CHECK: middle.block: |
| ; CHECK: %vector.recur.extract = extractelement <4 x i16> [[L1]], i32 3 |
| ; |
| ; CHECK: scalar.ph: |
| ; CHECK: %scalar.recur.init = phi i16 [ %vector.recur.extract, %middle.block ], [ %0, %vector.memcheck ], [ %0, %min.iters.checked ], [ %0, %for.preheader ] |
| ; |
| ; CHECK: scalar.body: |
| ; CHECK: %scalar.recur = phi i16 [ %scalar.recur.init, %scalar.ph ], [ {{.*}}, %scalar.body ] |
| ; |
| ; UNROLL: vector.body: |
| ; UNROLL: %vector.recur = phi <4 x i16> [ %vector.recur.init, %vector.ph ], [ [[L2:%[a-zA-Z0-9.]+]], %vector.body ] |
| ; UNROLL: [[L1:%[a-zA-Z0-9.]+]] = load <4 x i16> |
| ; UNROLL: [[L2]] = load <4 x i16> |
| ; UNROLL: {{.*}} = shufflevector <4 x i16> %vector.recur, <4 x i16> [[L1]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; UNROLL: {{.*}} = shufflevector <4 x i16> [[L1]], <4 x i16> [[L2]], <4 x i32> <i32 3, i32 4, i32 5, i32 6> |
| ; |
| ; UNROLL: middle.block: |
| ; UNROLL: %vector.recur.extract = extractelement <4 x i16> [[L2]], i32 3 |
| ; |
| define void @recurrence_3(i16* nocapture readonly %a, double* nocapture %b, i32 %n, float %f, i16 %p) { |
| entry: |
| %0 = load i16, i16* %a, align 2 |
| %conv = sitofp i16 %0 to double |
| %conv1 = fpext float %f to double |
| %conv2 = sitofp i16 %p to double |
| %mul = fmul fast double %conv2, %conv1 |
| %sub = fsub fast double %conv, %mul |
| store double %sub, double* %b, align 8 |
| %cmp25 = icmp sgt i32 %n, 1 |
| br i1 %cmp25, label %for.preheader, label %for.end |
| |
| for.preheader: |
| br label %scalar.body |
| |
| scalar.body: |
| %1 = phi i16 [ %0, %for.preheader ], [ %2, %scalar.body ] |
| %advars.iv = phi i64 [ %advars.iv.next, %scalar.body ], [ 1, %for.preheader ] |
| %arrayidx5 = getelementptr inbounds i16, i16* %a, i64 %advars.iv |
| %2 = load i16, i16* %arrayidx5, align 2 |
| %conv6 = sitofp i16 %2 to double |
| %conv11 = sitofp i16 %1 to double |
| %mul12 = fmul fast double %conv11, %conv1 |
| %sub13 = fsub fast double %conv6, %mul12 |
| %arrayidx15 = getelementptr inbounds double, double* %b, i64 %advars.iv |
| store double %sub13, double* %arrayidx15, align 8 |
| %advars.iv.next = add nuw nsw i64 %advars.iv, 1 |
| %lftr.wideiv = trunc i64 %advars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end.loopexit, label %scalar.body |
| |
| for.end.loopexit: |
| br label %for.end |
| |
| for.end: |
| ret void |
| } |
| |
| ; CHECK-LABEL: @PR26734 |
| ; |
| ; void PR26734(short *a, int *b, int *c, int d, short *e) { |
| ; for (; d != 21; d++) { |
| ; *b &= *c; |
| ; *e = *a - 6; |
| ; *c = *e; |
| ; } |
| ; } |
| ; |
| ; CHECK-NOT: vector.ph: |
| ; |
| define void @PR26734(i16* %a, i32* %b, i32* %c, i32 %d, i16* %e) { |
| entry: |
| %cmp4 = icmp eq i32 %d, 21 |
| br i1 %cmp4, label %entry.for.end_crit_edge, label %for.body.lr.ph |
| |
| entry.for.end_crit_edge: |
| %.pre = load i32, i32* %b, align 4 |
| br label %for.end |
| |
| for.body.lr.ph: |
| %0 = load i16, i16* %a, align 2 |
| %sub = add i16 %0, -6 |
| %conv2 = sext i16 %sub to i32 |
| %c.promoted = load i32, i32* %c, align 4 |
| %b.promoted = load i32, i32* %b, align 4 |
| br label %for.body |
| |
| for.body: |
| %inc7 = phi i32 [ %d, %for.body.lr.ph ], [ %inc, %for.body ] |
| %and6 = phi i32 [ %b.promoted, %for.body.lr.ph ], [ %and, %for.body ] |
| %conv25 = phi i32 [ %c.promoted, %for.body.lr.ph ], [ %conv2, %for.body ] |
| %and = and i32 %and6, %conv25 |
| %inc = add nsw i32 %inc7, 1 |
| %cmp = icmp eq i32 %inc, 21 |
| br i1 %cmp, label %for.cond.for.end_crit_edge, label %for.body |
| |
| for.cond.for.end_crit_edge: |
| %and.lcssa = phi i32 [ %and, %for.body ] |
| store i32 %conv2, i32* %c, align 4 |
| store i32 %and.lcssa, i32* %b, align 4 |
| store i16 %sub, i16* %e, align 2 |
| br label %for.end |
| |
| for.end: |
| ret void |
| } |
| |
| ; CHECK-LABEL: @PR27246 |
| ; |
| ; int PR27246() { |
| ; unsigned int e, n; |
| ; for (int i = 1; i < 49; ++i) { |
| ; for (int k = i; k > 1; --k) |
| ; e = k; |
| ; n = e; |
| ; } |
| ; return n; |
| ; } |
| ; |
| ; CHECK-NOT: vector.ph: |
| ; |
| define i32 @PR27246() { |
| entry: |
| br label %for.cond1.preheader |
| |
| for.cond1.preheader: |
| %i.016 = phi i32 [ 1, %entry ], [ %inc, %for.cond.cleanup3 ] |
| %e.015 = phi i32 [ undef, %entry ], [ %e.1.lcssa, %for.cond.cleanup3 ] |
| br label %for.cond1 |
| |
| for.cond.cleanup: |
| %e.1.lcssa.lcssa = phi i32 [ %e.1.lcssa, %for.cond.cleanup3 ] |
| ret i32 %e.1.lcssa.lcssa |
| |
| for.cond1: |
| %e.1 = phi i32 [ %k.0, %for.cond1 ], [ %e.015, %for.cond1.preheader ] |
| %k.0 = phi i32 [ %dec, %for.cond1 ], [ %i.016, %for.cond1.preheader ] |
| %cmp2 = icmp sgt i32 %k.0, 1 |
| %dec = add nsw i32 %k.0, -1 |
| br i1 %cmp2, label %for.cond1, label %for.cond.cleanup3 |
| |
| for.cond.cleanup3: |
| %e.1.lcssa = phi i32 [ %e.1, %for.cond1 ] |
| %inc = add nuw nsw i32 %i.016, 1 |
| %exitcond = icmp eq i32 %inc, 49 |
| br i1 %exitcond, label %for.cond.cleanup, label %for.cond1.preheader |
| } |