415 lines
14 KiB
LLVM
415 lines
14 KiB
LLVM
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; RUN: opt -S -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 < %s 2>&1 | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
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@f = common global i32 0, align 4
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@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
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@c = common global i32 0, align 4
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@a = common global i32 0, align 4
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@b = common global i32 0, align 4
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@e = common global i32 0, align 4
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; It has a value that is used outside of the loop
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; and is not a recognized reduction variable "tmp17".
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; However, tmp17 is a non-header phi which is an allowed exit.
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; CHECK-LABEL: @test1(
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; CHECK: %vec.ind = phi <2 x i32>
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; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
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; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: %.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
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define i32 @test1() {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %tmp8, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
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%tmp18 = add nsw i32 %tmp8, 1
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%tmp19 = icmp slt i32 %tmp18, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i32 [ %tmp17, %bb16 ]
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ret i32 %.lcssa
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}
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; non-hdr phi depends on header phi.
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; CHECK-LABEL: @test2(
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; CHECK: %vec.ind = phi <2 x i32>
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; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
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; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> %vec.ind
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: %.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
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define i32 @test2() {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %tmp8, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ %tmp8, %bb10 ], [ 1, %.lr.ph.i ]
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%tmp18 = add nsw i32 %tmp8, 1
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%tmp19 = icmp slt i32 %tmp18, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i32 [ %tmp17, %bb16 ]
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ret i32 %.lcssa
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}
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; more than 2 incoming values for tmp17 phi that is used outside loop.
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; CHECK-LABEL: test3(
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; CHECK-LABEL: vector.body:
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; CHECK: %predphi = select <2 x i1> %{{.*}}, <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
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; CHECK: %predphi1 = select <2 x i1> %{{.*}}, <2 x i32> <i32 2, i32 2>, <2 x i32> %predphi
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi1, i32 1
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
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define i32 @test3(i32 %N) {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %tmp8, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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%cmp = icmp sgt i32 %tmp8, %N
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br i1 %cmp, label %bb12, label %bb16
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bb12:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ], [ 2, %bb12 ]
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%tmp18 = add nsw i32 %tmp8, 1
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%tmp19 = icmp slt i32 %tmp18, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i32 [ %tmp17, %bb16 ]
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ret i32 %.lcssa
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}
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; more than one incoming value for outside user: %.lcssa
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; CHECK-LABEL: test4(
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; CHECK-LABEL: vector.body:
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; CHECK: %predphi = select <2 x i1>
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
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; CHECK-LABEL: f1.exit.loopexit.loopexit:
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; CHECK: %tmp17.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
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; CHECK-NEXT: br label %f1.exit.loopexit
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: %.lcssa = phi i32 [ 2, %bb ], [ %tmp17.lcssa, %f1.exit.loopexit.loopexit ]
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define i32 @test4(i32 %N) {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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%icmp = icmp slt i32 %b.promoted, %N
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br i1 %icmp, label %f1.exit.loopexit, label %.lr.ph.i
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.lr.ph.i:
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%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %tmp8, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
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%tmp18 = add nsw i32 %tmp8, 1
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%tmp19 = icmp slt i32 %tmp18, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i32 [ %tmp17, %bb16 ], [ 2, %bb ]
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ret i32 %.lcssa
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}
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; non hdr phi that depends on reduction and is used outside the loop.
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; reduction phis are only allowed to have bump or reduction operations as the inside user, so we should
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; not vectorize this.
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; CHECK-LABEL: reduction_sum(
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; CHECK-NOT: <2 x i32>
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define i32 @reduction_sum(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
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entry:
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%c1 = icmp sgt i32 %n, 0
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br i1 %c1, label %header, label %._crit_edge
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header: ; preds = %0, %.lr.ph
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%indvars.iv = phi i64 [ %indvars.iv.next, %bb16 ], [ 0, %entry ]
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%sum.02 = phi i32 [ %c9, %bb16 ], [ 0, %entry ]
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%c2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%c3 = load i32, i32* %c2, align 4
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%c4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
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%c5 = load i32, i32* %c4, align 4
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%tmp2 = icmp sgt i32 %sum.02, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ %sum.02, %bb10 ], [ 1, %header ]
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%c6 = trunc i64 %indvars.iv to i32
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%c7 = add i32 %sum.02, %c6
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%c8 = add i32 %c7, %c3
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%c9 = add i32 %c8, %c5
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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 eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %._crit_edge, label %header
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._crit_edge: ; preds = %.lr.ph, %0
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%sum.0.lcssa = phi i32 [ 0, %entry ], [ %c9, %bb16 ]
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%nonhdr.lcssa = phi i32 [ 1, %entry], [ %tmp17, %bb16 ]
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ret i32 %sum.0.lcssa
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}
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; invalid cyclic dependency with header phi iv, which prevents iv from being
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; recognized as induction var.
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; cannot vectorize.
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; CHECK-LABEL: cyclic_dep_with_indvar(
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; CHECK-NOT: <2 x i32>
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define i32 @cyclic_dep_with_indvar() {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%iv = phi i32 [ %ivnext, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %iv, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 0, %bb10 ], [ %iv, %.lr.ph.i ]
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%ivnext = add nsw i32 %tmp17, 1
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%tmp19 = icmp slt i32 %ivnext, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i32 [ %tmp17, %bb16 ]
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ret i32 %.lcssa
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}
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; non-reduction phi 'tmp17' used outside loop has cyclic dependence with %x.05 phi
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; cannot vectorize.
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; CHECK-LABEL: not_valid_reduction(
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; CHECK-NOT: <2 x i32>
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define i32 @not_valid_reduction(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
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entry:
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%cmp4 = icmp sgt i32 %n, 0
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br i1 %cmp4, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %latch ], [ 0, %entry ]
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%x.05 = phi i32 [ %tmp17, %latch ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp0 = load i32, i32* %arrayidx, align 4
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%tmp2 = icmp sgt i64 %indvars.iv, 10
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%sub = sub nsw i32 %x.05, %tmp0
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 1, %bb10 ], [ %sub, %for.body ]
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br label %latch
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latch:
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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 eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%x.0.lcssa = phi i32 [ 0, %entry ], [ %tmp17 , %latch ]
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ret i32 %x.0.lcssa
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}
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; CHECK-LABEL: @outside_user_non_phi(
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; CHECK: %vec.ind = phi <2 x i32>
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; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
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; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
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; CHECK: [[TRUNC:%[a-zA-Z0-9.]+]] = trunc <2 x i32> %predphi to <2 x i8>
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i8> [[TRUNC]], i32 1
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: %.lcssa = phi i8 [ %tmp17.trunc, %bb16 ], [ [[E1]], %middle.block ]
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define i8 @outside_user_non_phi() {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
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%tmp2 = icmp sgt i32 %tmp8, 10
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br i1 %tmp2, label %bb16, label %bb10
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bb10:
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br label %bb16
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bb16:
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%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
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%tmp17.trunc = trunc i32 %tmp17 to i8
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%tmp18 = add nsw i32 %tmp8, 1
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%tmp19 = icmp slt i32 %tmp18, 4
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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f1.exit.loopexit:
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%.lcssa = phi i8 [ %tmp17.trunc, %bb16 ]
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ret i8 %.lcssa
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}
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; CHECK-LABEL: no_vectorize_reduction_with_outside_use(
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; CHECK-NOT: <2 x i32>
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define i32 @no_vectorize_reduction_with_outside_use(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
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entry:
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%cmp7 = icmp sgt i32 %n, 0
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br i1 %cmp7, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%result.08 = phi i32 [ %or, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
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%1 = load i32, i32* %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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%or = or i32 %add, %result.08
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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 eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%result.0.lcssa = phi i32 [ 0, %entry ], [ %1, %for.body ]
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ret i32 %result.0.lcssa
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}
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; vectorize c[i] = a[i] + b[i] loop where result of c[i] is used outside the
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; loop
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; CHECK-LABEL: sum_arrays_outside_use(
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; CHECK-LABEL: vector.memcheck:
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; CHECK: br i1 %memcheck.conflict, label %scalar.ph, label %vector.ph
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; CHECK-LABEL: vector.body:
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; CHECK: %wide.load = load <2 x i32>, <2 x i32>*
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; CHECK: %wide.load16 = load <2 x i32>, <2 x i32>*
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; CHECK: [[ADD:%[a-zA-Z0-9.]+]] = add nsw <2 x i32> %wide.load, %wide.load16
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; CHECK: store <2 x i32>
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; CHECK-LABEL: middle.block:
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; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 1
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; CHECK-LABEL: f1.exit.loopexit:
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; CHECK: %.lcssa = phi i32 [ %sum, %.lr.ph.i ], [ [[E1]], %middle.block ]
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define i32 @sum_arrays_outside_use(i32* %B, i32* %A, i32* %C, i32 %N) {
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bb:
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%b.promoted = load i32, i32* @b, align 4
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br label %.lr.ph.i
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.lr.ph.i:
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%iv = phi i32 [ %ivnext, %.lr.ph.i ], [ %b.promoted, %bb ]
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%indvars.iv = sext i32 %iv to i64
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%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
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%Bload = load i32, i32* %arrayidx2, align 4
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%Aload = load i32, i32* %arrayidx, align 4
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%sum = add nsw i32 %Bload, %Aload
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%arrayidx3 = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
|
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store i32 %sum, i32* %arrayidx3, align 4
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%ivnext = add nsw i32 %iv, 1
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%tmp19 = icmp slt i32 %ivnext, %N
|
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|
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br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
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|
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|
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|
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f1.exit.loopexit:
|
||
|
|
%.lcssa = phi i32 [ %sum, %.lr.ph.i ]
|
||
|
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ret i32 %.lcssa
|
||
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}
|
||
|
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|
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|
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@tab = common global [32 x i8] zeroinitializer, align 1
|
||
|
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|
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|
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; CHECK-LABEL: non_uniform_live_out()
|
||
|
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; CHECK-LABEL: vector.body:
|
||
|
|
; CHECK: %vec.ind = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next, %vector.body ]
|
||
|
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; CHECK: [[ADD:%[a-zA-Z0-9.]+]] = add <2 x i32> %vec.ind, <i32 7, i32 7>
|
||
|
|
; CHECK: [[EE:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 0
|
||
|
|
; CHECK: [[GEP:%[a-zA-Z0-9.]+]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[EE]]
|
||
|
|
; CHECK-NEXT: [[GEP2:%[a-zA-Z0-9.]+]] = getelementptr inbounds i8, i8* [[GEP]], i32 0
|
||
|
|
; CHECK-NEXT: [[BC:%[a-zA-Z0-9.]+]] = bitcast i8* [[GEP2]] to <2 x i8>*
|
||
|
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; CHECK-NEXT: %wide.load = load <2 x i8>, <2 x i8>* [[BC]]
|
||
|
|
; CHECK-NEXT: [[ADD2:%[a-zA-Z0-9.]+]] = add <2 x i8> %wide.load, <i8 1, i8 1>
|
||
|
|
; CHECK: store <2 x i8> [[ADD2]], <2 x i8>*
|
||
|
|
|
||
|
|
; CHECK-LABEL: middle.block:
|
||
|
|
; CHECK: [[ADDEE:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 1
|
||
|
|
|
||
|
|
; CHECK-LABEL: for.end:
|
||
|
|
; CHECK: %lcssa = phi i32 [ %i.09, %for.body ], [ [[ADDEE]], %middle.block ]
|
||
|
|
; CHECK: %arrayidx.out = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %lcssa
|
||
|
|
define i32 @non_uniform_live_out() {
|
||
|
|
entry:
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body: ; preds = %for.body, %entry
|
||
|
|
%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%i.09 = add i32 %i.08, 7
|
||
|
|
%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.09
|
||
|
|
%0 = load i8, i8* %arrayidx, align 1
|
||
|
|
%bump = add i8 %0, 1
|
||
|
|
store i8 %bump, i8* %arrayidx, align 1
|
||
|
|
%inc = add nsw i32 %i.08, 1
|
||
|
|
%exitcond = icmp eq i32 %i.08, 20000
|
||
|
|
br i1 %exitcond, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.end: ; preds = %for.body
|
||
|
|
%lcssa = phi i32 [%i.09, %for.body]
|
||
|
|
%arrayidx.out = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %lcssa
|
||
|
|
store i8 42, i8* %arrayidx.out, align 1
|
||
|
|
ret i32 0
|
||
|
|
}
|