forked from OSchip/llvm-project
679 lines
26 KiB
LLVM
679 lines
26 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 -S | FileCheck %s
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; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 -instcombine -S | FileCheck %s --check-prefix=IND
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; RUN: opt < %s -loop-vectorize -force-vector-interleave=2 -force-vector-width=2 -instcombine -S | FileCheck %s --check-prefix=UNROLL
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; RUN: opt < %s -loop-vectorize -force-vector-interleave=2 -force-vector-width=2 -S | FileCheck %s --check-prefix=UNROLL-NO-IC
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; RUN: opt < %s -loop-vectorize -force-vector-interleave=2 -force-vector-width=4 -enable-interleaved-mem-accesses -instcombine -S | FileCheck %s --check-prefix=INTERLEAVE
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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"
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; Make sure that we can handle multiple integer induction variables.
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; CHECK-LABEL: @multi_int_induction(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %[[VAR:.*]] = trunc i64 %index to i32
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; CHECK: %offset.idx = add i32 190, %[[VAR]]
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define void @multi_int_induction(i32* %A, i32 %N) {
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for.body.lr.ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
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%count.09 = phi i32 [ 190, %for.body.lr.ph ], [ %inc, %for.body ]
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%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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store i32 %count.09, i32* %arrayidx2, align 4
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%inc = add nsw i32 %count.09, 1
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp ne i32 %lftr.wideiv, %N
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br i1 %exitcond, label %for.body, label %for.end
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for.end:
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ret void
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}
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; Make sure we remove unneeded vectorization of induction variables.
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; In order for instcombine to cleanup the vectorized induction variables that we
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; create in the loop vectorizer we need to perform some form of redundancy
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; elimination to get rid of multiple uses.
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; IND-LABEL: scalar_use
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; IND: br label %vector.body
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; IND: vector.body:
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; Vectorized induction variable.
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; IND-NOT: insertelement <2 x i64>
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; IND-NOT: shufflevector <2 x i64>
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; IND: br {{.*}}, label %vector.body
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define void @scalar_use(float* %a, float %b, i64 %offset, i64 %offset2, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
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%ind.sum = add i64 %iv, %offset
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%arr.idx = getelementptr inbounds float, float* %a, i64 %ind.sum
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%l1 = load float, float* %arr.idx, align 4
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%ind.sum2 = add i64 %iv, %offset2
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%arr.idx2 = getelementptr inbounds float, float* %a, i64 %ind.sum2
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%l2 = load float, float* %arr.idx2, align 4
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%m = fmul fast float %b, %l2
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%ad = fadd fast float %l1, %m
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store float %ad, float* %arr.idx, align 4
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond = icmp eq i64 %iv.next, %n
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br i1 %exitcond, label %loopexit, label %for.body
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loopexit:
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ret void
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}
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; Make sure we don't create a vector induction phi node that is unused.
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; Scalarize the step vectors instead.
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;
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; for (int i = 0; i < n; ++i)
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; sum += a[i];
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;
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; CHECK-LABEL: @scalarize_induction_variable_01(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %[[i0:.+]] = add i64 %index, 0
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; CHECK: %[[i1:.+]] = add i64 %index, 1
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; CHECK: getelementptr inbounds i64, i64* %a, i64 %[[i0]]
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; CHECK: getelementptr inbounds i64, i64* %a, i64 %[[i1]]
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;
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; UNROLL-NO-IC-LABEL: @scalarize_induction_variable_01(
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; UNROLL-NO-IC: vector.body:
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; UNROLL-NO-IC: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; UNROLL-NO-IC: %[[i0:.+]] = add i64 %index, 0
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; UNROLL-NO-IC: %[[i1:.+]] = add i64 %index, 1
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; UNROLL-NO-IC: %[[i2:.+]] = add i64 %index, 2
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; UNROLL-NO-IC: %[[i3:.+]] = add i64 %index, 3
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; UNROLL-NO-IC: getelementptr inbounds i64, i64* %a, i64 %[[i0]]
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; UNROLL-NO-IC: getelementptr inbounds i64, i64* %a, i64 %[[i1]]
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; UNROLL-NO-IC: getelementptr inbounds i64, i64* %a, i64 %[[i2]]
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; UNROLL-NO-IC: getelementptr inbounds i64, i64* %a, i64 %[[i3]]
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;
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; IND-LABEL: @scalarize_induction_variable_01(
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; IND: vector.body:
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; IND: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; IND-NOT: add i64 {{.*}}, 2
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; IND: getelementptr inbounds i64, i64* %a, i64 %index
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;
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; UNROLL-LABEL: @scalarize_induction_variable_01(
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; UNROLL: vector.body:
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; UNROLL: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; UNROLL-NOT: add i64 {{.*}}, 4
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; UNROLL: %[[g1:.+]] = getelementptr inbounds i64, i64* %a, i64 %index
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; UNROLL: getelementptr i64, i64* %[[g1]], i64 2
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define i64 @scalarize_induction_variable_01(i64 *%a, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
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%sum = phi i64 [ %2, %for.body ], [ 0, %entry ]
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%0 = getelementptr inbounds i64, i64* %a, i64 %i
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%1 = load i64, i64* %0, align 8
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%2 = add i64 %1, %sum
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%i.next = add nuw nsw i64 %i, 1
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%cond = icmp slt i64 %i.next, %n
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br i1 %cond, label %for.body, label %for.end
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for.end:
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%3 = phi i64 [ %2, %for.body ]
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ret i64 %3
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}
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; Make sure we scalarize the step vectors used for the pointer arithmetic. We
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; can't easily simplify vectorized step vectors.
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;
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; float s = 0;
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; for (int i ; 0; i < n; i += 8)
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; s += (a[i] + b[i] + 1.0f);
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;
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; CHECK-LABEL: @scalarize_induction_variable_02(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %offset.idx = shl i64 %index, 3
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; CHECK: %[[i0:.+]] = add i64 %offset.idx, 0
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; CHECK: %[[i1:.+]] = add i64 %offset.idx, 8
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; CHECK: getelementptr inbounds float, float* %a, i64 %[[i0]]
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; CHECK: getelementptr inbounds float, float* %a, i64 %[[i1]]
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; CHECK: getelementptr inbounds float, float* %b, i64 %[[i0]]
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; CHECK: getelementptr inbounds float, float* %b, i64 %[[i1]]
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;
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; UNROLL-NO-IC-LABEL: @scalarize_induction_variable_02(
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; UNROLL-NO-IC: vector.body:
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; UNROLL-NO-IC: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; UNROLL-NO-IC: %offset.idx = shl i64 %index, 3
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; UNROLL-NO-IC: %[[i0:.+]] = add i64 %offset.idx, 0
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; UNROLL-NO-IC: %[[i1:.+]] = add i64 %offset.idx, 8
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; UNROLL-NO-IC: %[[i2:.+]] = add i64 %offset.idx, 16
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; UNROLL-NO-IC: %[[i3:.+]] = add i64 %offset.idx, 24
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; UNROLL-NO-IC: getelementptr inbounds float, float* %a, i64 %[[i0]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %a, i64 %[[i1]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %a, i64 %[[i2]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %a, i64 %[[i3]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %b, i64 %[[i0]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %b, i64 %[[i1]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %b, i64 %[[i2]]
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; UNROLL-NO-IC: getelementptr inbounds float, float* %b, i64 %[[i3]]
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;
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; IND-LABEL: @scalarize_induction_variable_02(
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; IND: vector.body:
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; IND: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; IND: %[[i0:.+]] = shl i64 %index, 3
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; IND: %[[i1:.+]] = or i64 %[[i0]], 8
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; IND: getelementptr inbounds float, float* %a, i64 %[[i0]]
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; IND: getelementptr inbounds float, float* %a, i64 %[[i1]]
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;
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; UNROLL-LABEL: @scalarize_induction_variable_02(
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; UNROLL: vector.body:
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; UNROLL: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; UNROLL: %[[i0:.+]] = shl i64 %index, 3
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; UNROLL: %[[i1:.+]] = or i64 %[[i0]], 8
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; UNROLL: %[[i2:.+]] = or i64 %[[i0]], 16
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; UNROLL: %[[i3:.+]] = or i64 %[[i0]], 24
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; UNROLL: getelementptr inbounds float, float* %a, i64 %[[i0]]
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; UNROLL: getelementptr inbounds float, float* %a, i64 %[[i1]]
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; UNROLL: getelementptr inbounds float, float* %a, i64 %[[i2]]
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; UNROLL: getelementptr inbounds float, float* %a, i64 %[[i3]]
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define float @scalarize_induction_variable_02(float* %a, float* %b, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%s = phi float [ 0.0, %entry ], [ %6, %for.body ]
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%0 = getelementptr inbounds float, float* %a, i64 %i
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%1 = load float, float* %0, align 4
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%2 = getelementptr inbounds float, float* %b, i64 %i
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%3 = load float, float* %2, align 4
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%4 = fadd fast float %s, 1.0
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%5 = fadd fast float %4, %1
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%6 = fadd fast float %5, %3
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%i.next = add nuw nsw i64 %i, 8
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%cond = icmp slt i64 %i.next, %n
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br i1 %cond, label %for.body, label %for.end
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for.end:
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%s.lcssa = phi float [ %6, %for.body ]
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ret float %s.lcssa
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}
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; Make sure we scalarize the step vectors used for the pointer arithmetic. We
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; can't easily simplify vectorized step vectors. (Interleaved accesses.)
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;
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; for (int i = 0; i < n; ++i)
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; a[i].f ^= y;
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;
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; INTERLEAVE-LABEL: @scalarize_induction_variable_03(
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; INTERLEAVE: vector.body:
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; INTERLEAVE: %[[i0:.+]] = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; INTERLEAVE: %[[i1:.+]] = or i64 %[[i0]], 1
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; INTERLEAVE: %[[i2:.+]] = or i64 %[[i0]], 2
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; INTERLEAVE: %[[i3:.+]] = or i64 %[[i0]], 3
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; INTERLEAVE: %[[i4:.+]] = or i64 %[[i0]], 4
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; INTERLEAVE: %[[i5:.+]] = or i64 %[[i0]], 5
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; INTERLEAVE: %[[i6:.+]] = or i64 %[[i0]], 6
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; INTERLEAVE: %[[i7:.+]] = or i64 %[[i0]], 7
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i0]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i1]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i2]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i3]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i4]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i5]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i6]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i7]], i32 1
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%pair.i32 = type { i32, i32 }
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define void @scalarize_induction_variable_03(%pair.i32 *%p, i32 %y, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
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%f = getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %i, i32 1
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%0 = load i32, i32* %f, align 8
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%1 = xor i32 %0, %y
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store i32 %1, i32* %f, align 8
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%i.next = add nuw nsw i64 %i, 1
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%cond = icmp slt i64 %i.next, %n
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br i1 %cond, label %for.body, label %for.end
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for.end:
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ret void
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}
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; Make sure we scalarize the step vectors used for the pointer arithmetic. We
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; can't easily simplify vectorized step vectors. (Interleaved accesses.)
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;
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; for (int i = 0; i < n; ++i)
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; p[i].f = a[i * 4]
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;
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; INTERLEAVE-LABEL: @scalarize_induction_variable_04(
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; INTERLEAVE: vector.body:
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; INTERLEAVE: %[[i0:.+]] = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; INTERLEAVE: %[[i1:.+]] = or i64 %[[i0]], 1
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; INTERLEAVE: %[[i2:.+]] = or i64 %[[i0]], 2
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; INTERLEAVE: %[[i3:.+]] = or i64 %[[i0]], 3
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; INTERLEAVE: %[[i4:.+]] = or i64 %[[i0]], 4
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; INTERLEAVE: %[[i5:.+]] = or i64 %[[i0]], 5
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; INTERLEAVE: %[[i6:.+]] = or i64 %[[i0]], 6
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; INTERLEAVE: %[[i7:.+]] = or i64 %[[i0]], 7
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i0]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i1]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i2]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i3]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i4]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i5]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i6]], i32 1
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; INTERLEAVE: getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %[[i7]], i32 1
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define void @scalarize_induction_variable_04(i32* %a, %pair.i32* %p, i32 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ %i.next, %for.body ], [ 0, %entry]
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%0 = shl nsw i64 %i, 2
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%1 = getelementptr inbounds i32, i32* %a, i64 %0
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%2 = load i32, i32* %1, align 1
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%3 = getelementptr inbounds %pair.i32, %pair.i32* %p, i64 %i, i32 1
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store i32 %2, i32* %3, align 1
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%i.next = add nuw nsw i64 %i, 1
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%4 = trunc i64 %i.next to i32
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%cond = icmp eq i32 %4, %n
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br i1 %cond, label %for.end, label %for.body
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for.end:
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ret void
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}
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; Ensure we generate both a vector and a scalar induction variable. In this
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; test, the induction variable is used by an instruction that will be
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; vectorized (trunc) as well as an instruction that will remain in scalar form
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; (gepelementptr).
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;
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; CHECK-LABEL: @iv_vector_and_scalar_users(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %vec.ind = phi <2 x i64> [ <i64 0, i64 1>, %vector.ph ], [ %vec.ind.next, %vector.body ]
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; CHECK: %vec.ind1 = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next2, %vector.body ]
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; CHECK: %[[i0:.+]] = add i64 %index, 0
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; CHECK: %[[i1:.+]] = add i64 %index, 1
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; CHECK: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i0]], i32 1
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; CHECK: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i1]], i32 1
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; CHECK: %index.next = add i64 %index, 2
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; CHECK: %vec.ind.next = add <2 x i64> %vec.ind, <i64 2, i64 2>
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; CHECK: %vec.ind.next2 = add <2 x i32> %vec.ind1, <i32 2, i32 2>
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;
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; IND-LABEL: @iv_vector_and_scalar_users(
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; IND: vector.body:
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; IND: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; IND: %vec.ind1 = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next2, %vector.body ]
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; IND: %[[i1:.+]] = or i64 %index, 1
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; IND: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %index, i32 1
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; IND: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i1]], i32 1
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; IND: %index.next = add i64 %index, 2
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; IND: %vec.ind.next2 = add <2 x i32> %vec.ind1, <i32 2, i32 2>
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;
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; UNROLL-LABEL: @iv_vector_and_scalar_users(
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; UNROLL: vector.body:
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; UNROLL: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; UNROLL: %vec.ind2 = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next5, %vector.body ]
|
|
; UNROLL: %[[i1:.+]] = or i64 %index, 1
|
|
; UNROLL: %[[i2:.+]] = or i64 %index, 2
|
|
; UNROLL: %[[i3:.+]] = or i64 %index, 3
|
|
; UNROLL: %step.add3 = add <2 x i32> %vec.ind2, <i32 2, i32 2>
|
|
; UNROLL: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %index, i32 1
|
|
; UNROLL: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i1]], i32 1
|
|
; UNROLL: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i2]], i32 1
|
|
; UNROLL: getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %[[i3]], i32 1
|
|
; UNROLL: %index.next = add i64 %index, 4
|
|
; UNROLL: %vec.ind.next5 = add <2 x i32> %vec.ind2, <i32 4, i32 4>
|
|
|
|
%pair.i16 = type { i16, i16 }
|
|
define void @iv_vector_and_scalar_users(%pair.i16* %p, i32 %a, i32 %n) {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
|
|
%0 = trunc i64 %i to i32
|
|
%1 = add i32 %a, %0
|
|
%2 = trunc i32 %1 to i16
|
|
%3 = getelementptr inbounds %pair.i16, %pair.i16* %p, i64 %i, i32 1
|
|
store i16 %2, i16* %3, align 2
|
|
%i.next = add nuw nsw i64 %i, 1
|
|
%4 = trunc i64 %i.next to i32
|
|
%cond = icmp eq i32 %4, %n
|
|
br i1 %cond, label %for.end, label %for.body
|
|
|
|
for.end:
|
|
ret void
|
|
}
|
|
|
|
; Make sure that the loop exit count computation does not overflow for i8 and
|
|
; i16. The exit count of these loops is i8/i16 max + 1. If we don't cast the
|
|
; induction variable to a bigger type the exit count computation will overflow
|
|
; to 0.
|
|
; PR17532
|
|
|
|
; CHECK-LABEL: i8_loop
|
|
; CHECK: icmp eq i32 {{.*}}, 256
|
|
define i32 @i8_loop() nounwind readnone ssp uwtable {
|
|
br label %1
|
|
|
|
; <label>:1 ; preds = %1, %0
|
|
%a.0 = phi i32 [ 1, %0 ], [ %2, %1 ]
|
|
%b.0 = phi i8 [ 0, %0 ], [ %3, %1 ]
|
|
%2 = and i32 %a.0, 4
|
|
%3 = add i8 %b.0, -1
|
|
%4 = icmp eq i8 %3, 0
|
|
br i1 %4, label %5, label %1
|
|
|
|
; <label>:5 ; preds = %1
|
|
ret i32 %2
|
|
}
|
|
|
|
; CHECK-LABEL: i16_loop
|
|
; CHECK: icmp eq i32 {{.*}}, 65536
|
|
|
|
define i32 @i16_loop() nounwind readnone ssp uwtable {
|
|
br label %1
|
|
|
|
; <label>:1 ; preds = %1, %0
|
|
%a.0 = phi i32 [ 1, %0 ], [ %2, %1 ]
|
|
%b.0 = phi i16 [ 0, %0 ], [ %3, %1 ]
|
|
%2 = and i32 %a.0, 4
|
|
%3 = add i16 %b.0, -1
|
|
%4 = icmp eq i16 %3, 0
|
|
br i1 %4, label %5, label %1
|
|
|
|
; <label>:5 ; preds = %1
|
|
ret i32 %2
|
|
}
|
|
|
|
; This loop has a backedge taken count of i32_max. We need to check for this
|
|
; condition and branch directly to the scalar loop.
|
|
|
|
; CHECK-LABEL: max_i32_backedgetaken
|
|
; CHECK: br i1 true, label %scalar.ph, label %min.iters.checked
|
|
|
|
; CHECK: middle.block:
|
|
; CHECK: %[[v9:.+]] = extractelement <2 x i32> %bin.rdx, i32 0
|
|
; CHECK: scalar.ph:
|
|
; CHECK: %bc.resume.val = phi i32 [ 0, %middle.block ], [ 0, %[[v0:.+]] ]
|
|
; CHECK: %bc.merge.rdx = phi i32 [ 1, %[[v0:.+]] ], [ 1, %min.iters.checked ], [ %[[v9]], %middle.block ]
|
|
|
|
define i32 @max_i32_backedgetaken() nounwind readnone ssp uwtable {
|
|
|
|
br label %1
|
|
|
|
; <label>:1 ; preds = %1, %0
|
|
%a.0 = phi i32 [ 1, %0 ], [ %2, %1 ]
|
|
%b.0 = phi i32 [ 0, %0 ], [ %3, %1 ]
|
|
%2 = and i32 %a.0, 4
|
|
%3 = add i32 %b.0, -1
|
|
%4 = icmp eq i32 %3, 0
|
|
br i1 %4, label %5, label %1
|
|
|
|
; <label>:5 ; preds = %1
|
|
ret i32 %2
|
|
}
|
|
|
|
; When generating the overflow check we must sure that the induction start value
|
|
; is defined before the branch to the scalar preheader.
|
|
|
|
; CHECK-LABEL: testoverflowcheck
|
|
; CHECK: entry
|
|
; CHECK: %[[LOAD:.*]] = load i8
|
|
; CHECK: br
|
|
|
|
; CHECK: scalar.ph
|
|
; CHECK: phi i8 [ %{{.*}}, %middle.block ], [ %[[LOAD]], %entry ]
|
|
|
|
@e = global i8 1, align 1
|
|
@d = common global i32 0, align 4
|
|
@c = common global i32 0, align 4
|
|
define i32 @testoverflowcheck() {
|
|
entry:
|
|
%.pr.i = load i8, i8* @e, align 1
|
|
%0 = load i32, i32* @d, align 4
|
|
%c.promoted.i = load i32, i32* @c, align 4
|
|
br label %cond.end.i
|
|
|
|
cond.end.i:
|
|
%inc4.i = phi i8 [ %.pr.i, %entry ], [ %inc.i, %cond.end.i ]
|
|
%and3.i = phi i32 [ %c.promoted.i, %entry ], [ %and.i, %cond.end.i ]
|
|
%and.i = and i32 %0, %and3.i
|
|
%inc.i = add i8 %inc4.i, 1
|
|
%tobool.i = icmp eq i8 %inc.i, 0
|
|
br i1 %tobool.i, label %loopexit, label %cond.end.i
|
|
|
|
loopexit:
|
|
ret i32 %and.i
|
|
}
|
|
|
|
; The SCEV expression of %sphi is (zext i8 {%t,+,1}<%loop> to i32)
|
|
; In order to recognize %sphi as an induction PHI and vectorize this loop,
|
|
; we need to convert the SCEV expression into an AddRecExpr.
|
|
; The expression gets converted to {zext i8 %t to i32,+,1}.
|
|
|
|
; CHECK-LABEL: wrappingindvars1
|
|
; CHECK-LABEL: vector.scevcheck
|
|
; CHECK-LABEL: vector.ph
|
|
; CHECK: %[[START:.*]] = add <2 x i32> %{{.*}}, <i32 0, i32 1>
|
|
; CHECK-LABEL: vector.body
|
|
; CHECK: %[[PHI:.*]] = phi <2 x i32> [ %[[START]], %vector.ph ], [ %[[STEP:.*]], %vector.body ]
|
|
; CHECK: %[[STEP]] = add <2 x i32> %[[PHI]], <i32 2, i32 2>
|
|
define void @wrappingindvars1(i8 %t, i32 %len, i32 *%A) {
|
|
entry:
|
|
%st = zext i8 %t to i16
|
|
%ext = zext i8 %t to i32
|
|
%ecmp = icmp ult i16 %st, 42
|
|
br i1 %ecmp, label %loop, label %exit
|
|
|
|
loop:
|
|
|
|
%idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
|
|
%idx.b = phi i32 [ 0, %entry ], [ %idx.b.inc, %loop ]
|
|
%sphi = phi i32 [ %ext, %entry ], [%idx.inc.ext, %loop]
|
|
|
|
%ptr = getelementptr inbounds i32, i32* %A, i8 %idx
|
|
store i32 %sphi, i32* %ptr
|
|
|
|
%idx.inc = add i8 %idx, 1
|
|
%idx.inc.ext = zext i8 %idx.inc to i32
|
|
%idx.b.inc = add nuw nsw i32 %idx.b, 1
|
|
|
|
%c = icmp ult i32 %idx.b, %len
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; The SCEV expression of %sphi is (4 * (zext i8 {%t,+,1}<%loop> to i32))
|
|
; In order to recognize %sphi as an induction PHI and vectorize this loop,
|
|
; we need to convert the SCEV expression into an AddRecExpr.
|
|
; The expression gets converted to ({4 * (zext %t to i32),+,4}).
|
|
; CHECK-LABEL: wrappingindvars2
|
|
; CHECK-LABEL: vector.scevcheck
|
|
; CHECK-LABEL: vector.ph
|
|
; CHECK: %[[START:.*]] = add <2 x i32> %{{.*}}, <i32 0, i32 4>
|
|
; CHECK-LABEL: vector.body
|
|
; CHECK: %[[PHI:.*]] = phi <2 x i32> [ %[[START]], %vector.ph ], [ %[[STEP:.*]], %vector.body ]
|
|
; CHECK: %[[STEP]] = add <2 x i32> %[[PHI]], <i32 8, i32 8>
|
|
define void @wrappingindvars2(i8 %t, i32 %len, i32 *%A) {
|
|
|
|
entry:
|
|
%st = zext i8 %t to i16
|
|
%ext = zext i8 %t to i32
|
|
%ext.mul = mul i32 %ext, 4
|
|
|
|
%ecmp = icmp ult i16 %st, 42
|
|
br i1 %ecmp, label %loop, label %exit
|
|
|
|
loop:
|
|
|
|
%idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
|
|
%sphi = phi i32 [ %ext.mul, %entry ], [%mul, %loop]
|
|
%idx.b = phi i32 [ 0, %entry ], [ %idx.b.inc, %loop ]
|
|
|
|
%ptr = getelementptr inbounds i32, i32* %A, i8 %idx
|
|
store i32 %sphi, i32* %ptr
|
|
|
|
%idx.inc = add i8 %idx, 1
|
|
%idx.inc.ext = zext i8 %idx.inc to i32
|
|
%mul = mul i32 %idx.inc.ext, 4
|
|
%idx.b.inc = add nuw nsw i32 %idx.b, 1
|
|
|
|
%c = icmp ult i32 %idx.b, %len
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; Check that we generate vectorized IVs in the pre-header
|
|
; instead of widening the scalar IV inside the loop, when
|
|
; we know how to do that.
|
|
; IND-LABEL: veciv
|
|
; IND: vector.body:
|
|
; IND: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; IND: %vec.ind = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; IND: %index.next = add i32 %index, 2
|
|
; IND: %vec.ind.next = add <2 x i32> %vec.ind, <i32 2, i32 2>
|
|
; IND: %[[CMP:.*]] = icmp eq i32 %index.next
|
|
; IND: br i1 %[[CMP]]
|
|
; UNROLL-LABEL: veciv
|
|
; UNROLL: vector.body:
|
|
; UNROLL: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; UNROLL: %vec.ind = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; UNROLL: %step.add = add <2 x i32> %vec.ind, <i32 2, i32 2>
|
|
; UNROLL: %index.next = add i32 %index, 4
|
|
; UNROLL: %vec.ind.next = add <2 x i32> %vec.ind, <i32 4, i32 4>
|
|
; UNROLL: %[[CMP:.*]] = icmp eq i32 %index.next
|
|
; UNROLL: br i1 %[[CMP]]
|
|
define void @veciv(i32* nocapture %a, i32 %start, i32 %k) {
|
|
for.body.preheader:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %a, i32 %indvars.iv
|
|
store i32 %indvars.iv, i32* %arrayidx, align 4
|
|
%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
|
|
%exitcond = icmp eq i32 %indvars.iv.next, %k
|
|
br i1 %exitcond, label %exit, label %for.body
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; IND-LABEL: trunciv
|
|
; IND: vector.body:
|
|
; IND: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; IND: %[[VECIND:.*]] = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %[[STEPADD:.*]], %vector.body ]
|
|
; IND: %index.next = add i64 %index, 2
|
|
; IND: %[[STEPADD]] = add <2 x i32> %[[VECIND]], <i32 2, i32 2>
|
|
; IND: %[[CMP:.*]] = icmp eq i64 %index.next
|
|
; IND: br i1 %[[CMP]]
|
|
define void @trunciv(i32* nocapture %a, i32 %start, i64 %k) {
|
|
for.body.preheader:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
|
|
%trunc.iv = trunc i64 %indvars.iv to i32
|
|
%arrayidx = getelementptr inbounds i32, i32* %a, i32 %trunc.iv
|
|
store i32 %trunc.iv, i32* %arrayidx, align 4
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%exitcond = icmp eq i64 %indvars.iv.next, %k
|
|
br i1 %exitcond, label %exit, label %for.body
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: @nonprimary(
|
|
; CHECK: vector.ph:
|
|
; CHECK: %[[INSERT:.*]] = insertelement <2 x i32> undef, i32 %i, i32 0
|
|
; CHECK: %[[SPLAT:.*]] = shufflevector <2 x i32> %[[INSERT]], <2 x i32> undef, <2 x i32> zeroinitializer
|
|
; CHECK: %[[START:.*]] = add <2 x i32> %[[SPLAT]], <i32 0, i32 1>
|
|
; CHECK: vector.body:
|
|
; CHECK: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; CHECK: %vec.ind = phi <2 x i32> [ %[[START]], %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; CHECK: %offset.idx = add i32 %i, %index
|
|
; CHECK: %[[A1:.*]] = add i32 %offset.idx, 0
|
|
; CHECK: %[[A2:.*]] = add i32 %offset.idx, 1
|
|
; CHECK: %[[G1:.*]] = getelementptr inbounds i32, i32* %a, i32 %[[A1]]
|
|
; CHECK: %[[G2:.*]] = getelementptr inbounds i32, i32* %a, i32 %[[A2]]
|
|
; CHECK: %[[G3:.*]] = getelementptr i32, i32* %[[G1]], i32 0
|
|
; CHECK: %[[B1:.*]] = bitcast i32* %[[G3]] to <2 x i32>*
|
|
; CHECK: store <2 x i32> %vec.ind, <2 x i32>* %[[B1]]
|
|
; CHECK: %index.next = add i32 %index, 2
|
|
; CHECK: %vec.ind.next = add <2 x i32> %vec.ind, <i32 2, i32 2>
|
|
; CHECK: %[[CMP:.*]] = icmp eq i32 %index.next, %n.vec
|
|
; CHECK: br i1 %[[CMP]]
|
|
;
|
|
; IND-LABEL: @nonprimary(
|
|
; IND: vector.ph:
|
|
; IND: %[[INSERT:.*]] = insertelement <2 x i32> undef, i32 %i, i32 0
|
|
; IND: %[[SPLAT:.*]] = shufflevector <2 x i32> %[[INSERT]], <2 x i32> undef, <2 x i32> zeroinitializer
|
|
; IND: %[[START:.*]] = add <2 x i32> %[[SPLAT]], <i32 0, i32 1>
|
|
; IND: vector.body:
|
|
; IND: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; IND: %vec.ind = phi <2 x i32> [ %[[START]], %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; IND: %[[A1:.*]] = add i32 %index, %i
|
|
; IND: %[[S1:.*]] = sext i32 %[[A1]] to i64
|
|
; IND: %[[G1:.*]] = getelementptr inbounds i32, i32* %a, i64 %[[S1]]
|
|
; IND: %[[B1:.*]] = bitcast i32* %[[G1]] to <2 x i32>*
|
|
; IND: store <2 x i32> %vec.ind, <2 x i32>* %[[B1]]
|
|
; IND: %index.next = add i32 %index, 2
|
|
; IND: %vec.ind.next = add <2 x i32> %vec.ind, <i32 2, i32 2>
|
|
; IND: %[[CMP:.*]] = icmp eq i32 %index.next, %n.vec
|
|
; IND: br i1 %[[CMP]]
|
|
;
|
|
; UNROLL-LABEL: @nonprimary(
|
|
; UNROLL: vector.ph:
|
|
; UNROLL: %[[INSERT:.*]] = insertelement <2 x i32> undef, i32 %i, i32 0
|
|
; UNROLL: %[[SPLAT:.*]] = shufflevector <2 x i32> %[[INSERT]], <2 x i32> undef, <2 x i32> zeroinitializer
|
|
; UNROLL: %[[START:.*]] = add <2 x i32> %[[SPLAT]], <i32 0, i32 1>
|
|
; UNROLL: vector.body:
|
|
; UNROLL: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
|
|
; UNROLL: %vec.ind = phi <2 x i32> [ %[[START]], %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; UNROLL: %step.add = add <2 x i32> %vec.ind, <i32 2, i32 2>
|
|
; UNROLL: %[[A1:.*]] = add i32 %index, %i
|
|
; UNROLL: %[[S1:.*]] = sext i32 %[[A1]] to i64
|
|
; UNROLL: %[[G1:.*]] = getelementptr inbounds i32, i32* %a, i64 %[[S1]]
|
|
; UNROLL: %[[B1:.*]] = bitcast i32* %[[G1]] to <2 x i32>*
|
|
; UNROLL: store <2 x i32> %vec.ind, <2 x i32>* %[[B1]]
|
|
; UNROLL: %[[G2:.*]] = getelementptr i32, i32* %[[G1]], i64 2
|
|
; UNROLL: %[[B2:.*]] = bitcast i32* %[[G2]] to <2 x i32>*
|
|
; UNROLL: store <2 x i32> %step.add, <2 x i32>* %[[B2]]
|
|
; UNROLL: %index.next = add i32 %index, 4
|
|
; UNROLL: %vec.ind.next = add <2 x i32> %vec.ind, <i32 4, i32 4>
|
|
; UNROLL: %[[CMP:.*]] = icmp eq i32 %index.next, %n.vec
|
|
; UNROLL: br i1 %[[CMP]]
|
|
define void @nonprimary(i32* nocapture %a, i32 %start, i32 %i, i32 %k) {
|
|
for.body.preheader:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ %i, %for.body.preheader ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %a, i32 %indvars.iv
|
|
store i32 %indvars.iv, i32* %arrayidx, align 4
|
|
%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
|
|
%exitcond = icmp eq i32 %indvars.iv.next, %k
|
|
br i1 %exitcond, label %exit, label %for.body
|
|
|
|
exit:
|
|
ret void
|
|
}
|