| ; RUN: opt < %s -basicaa -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -loop-vectorize-with-block-frequency -dce -instcombine -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" |
| target triple = "x86_64-apple-macosx10.8.0" |
| |
| @b = common global [2048 x i32] zeroinitializer, align 16 |
| @c = common global [2048 x i32] zeroinitializer, align 16 |
| @a = common global [2048 x i32] zeroinitializer, align 16 |
| @G = common global [32 x [1024 x i32]] zeroinitializer, align 16 |
| @ub = common global [1024 x i32] zeroinitializer, align 16 |
| @uc = common global [1024 x i32] zeroinitializer, align 16 |
| @d = common global [2048 x i32] zeroinitializer, align 16 |
| @fa = common global [1024 x float] zeroinitializer, align 16 |
| @fb = common global [1024 x float] zeroinitializer, align 16 |
| @ic = common global [1024 x i32] zeroinitializer, align 16 |
| @da = common global [1024 x float] zeroinitializer, align 16 |
| @db = common global [1024 x float] zeroinitializer, align 16 |
| @dc = common global [1024 x float] zeroinitializer, align 16 |
| @dd = common global [1024 x float] zeroinitializer, align 16 |
| @dj = common global [1024 x i32] zeroinitializer, align 16 |
| |
| ; We can optimize this test without a tail. |
| ;CHECK-LABEL: @example1( |
| ;CHECK: load <4 x i32> |
| ;CHECK: add nsw <4 x i32> |
| ;CHECK: store <4 x i32> |
| ;CHECK: ret void |
| define void @example1() optsize { |
| br label %1 |
| |
| ; <label>:1 ; preds = %1, %0 |
| %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ] |
| %2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv |
| %3 = load i32, i32* %2, align 4 |
| %4 = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %indvars.iv |
| %5 = load i32, i32* %4, align 4 |
| %6 = add nsw i32 %5, %3 |
| %7 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv |
| store i32 %6, i32* %7, align 4 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, 256 |
| br i1 %exitcond, label %8, label %1 |
| |
| ; <label>:8 ; preds = %1 |
| ret void |
| } |
| |
| ; Can't vectorize in 'optsize' mode because we need a tail. |
| ;CHECK-LABEL: @example2( |
| ;CHECK-NOT: store <4 x i32> |
| ;CHECK: ret void |
| define void @example2(i32 %n, i32 %x) optsize { |
| %1 = icmp sgt i32 %n, 0 |
| br i1 %1, label %.lr.ph5, label %.preheader |
| |
| ..preheader_crit_edge: ; preds = %.lr.ph5 |
| %phitmp = sext i32 %n to i64 |
| br label %.preheader |
| |
| .preheader: ; preds = %..preheader_crit_edge, %0 |
| %i.0.lcssa = phi i64 [ %phitmp, %..preheader_crit_edge ], [ 0, %0 ] |
| %2 = icmp eq i32 %n, 0 |
| br i1 %2, label %._crit_edge, label %.lr.ph |
| |
| .lr.ph5: ; preds = %0, %.lr.ph5 |
| %indvars.iv6 = phi i64 [ %indvars.iv.next7, %.lr.ph5 ], [ 0, %0 ] |
| %3 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv6 |
| store i32 %x, i32* %3, align 4 |
| %indvars.iv.next7 = add i64 %indvars.iv6, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next7 to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %..preheader_crit_edge, label %.lr.ph5 |
| |
| .lr.ph: ; preds = %.preheader, %.lr.ph |
| %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %i.0.lcssa, %.preheader ] |
| %.02 = phi i32 [ %4, %.lr.ph ], [ %n, %.preheader ] |
| %4 = add nsw i32 %.02, -1 |
| %5 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv |
| %6 = load i32, i32* %5, align 4 |
| %7 = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %indvars.iv |
| %8 = load i32, i32* %7, align 4 |
| %9 = and i32 %8, %6 |
| %10 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv |
| store i32 %9, i32* %10, align 4 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %11 = icmp eq i32 %4, 0 |
| br i1 %11, label %._crit_edge, label %.lr.ph |
| |
| ._crit_edge: ; preds = %.lr.ph, %.preheader |
| ret void |
| } |
| |
| ; N is unknown, we need a tail. Can't vectorize. |
| ;CHECK-LABEL: @example3( |
| ;CHECK-NOT: <4 x i32> |
| ;CHECK: ret void |
| define void @example3(i32 %n, i32* noalias nocapture %p, i32* noalias nocapture %q) optsize { |
| %1 = icmp eq i32 %n, 0 |
| br i1 %1, label %._crit_edge, label %.lr.ph |
| |
| .lr.ph: ; preds = %0, %.lr.ph |
| %.05 = phi i32 [ %2, %.lr.ph ], [ %n, %0 ] |
| %.014 = phi i32* [ %5, %.lr.ph ], [ %p, %0 ] |
| %.023 = phi i32* [ %3, %.lr.ph ], [ %q, %0 ] |
| %2 = add nsw i32 %.05, -1 |
| %3 = getelementptr inbounds i32, i32* %.023, i64 1 |
| %4 = load i32, i32* %.023, align 16 |
| %5 = getelementptr inbounds i32, i32* %.014, i64 1 |
| store i32 %4, i32* %.014, align 16 |
| %6 = icmp eq i32 %2, 0 |
| br i1 %6, label %._crit_edge, label %.lr.ph |
| |
| ._crit_edge: ; preds = %.lr.ph, %0 |
| ret void |
| } |
| |
| ; We can't vectorize this one because we need a runtime ptr check. |
| ;CHECK-LABEL: @example23( |
| ;CHECK-NOT: <4 x i32> |
| ;CHECK: ret void |
| define void @example23(i16* nocapture %src, i32* nocapture %dst) optsize { |
| br label %1 |
| |
| ; <label>:1 ; preds = %1, %0 |
| %.04 = phi i16* [ %src, %0 ], [ %2, %1 ] |
| %.013 = phi i32* [ %dst, %0 ], [ %6, %1 ] |
| %i.02 = phi i32 [ 0, %0 ], [ %7, %1 ] |
| %2 = getelementptr inbounds i16, i16* %.04, i64 1 |
| %3 = load i16, i16* %.04, align 2 |
| %4 = zext i16 %3 to i32 |
| %5 = shl nuw nsw i32 %4, 7 |
| %6 = getelementptr inbounds i32, i32* %.013, i64 1 |
| store i32 %5, i32* %.013, align 4 |
| %7 = add nsw i32 %i.02, 1 |
| %exitcond = icmp eq i32 %7, 256 |
| br i1 %exitcond, label %8, label %1 |
| |
| ; <label>:8 ; preds = %1 |
| ret void |
| } |
| |
| |
| ; We CAN vectorize this example because the pointers are marked as noalias. |
| ;CHECK-LABEL: @example23b( |
| ;CHECK: <4 x i32> |
| ;CHECK: ret void |
| define void @example23b(i16* noalias nocapture %src, i32* noalias nocapture %dst) optsize { |
| br label %1 |
| |
| ; <label>:1 ; preds = %1, %0 |
| %.04 = phi i16* [ %src, %0 ], [ %2, %1 ] |
| %.013 = phi i32* [ %dst, %0 ], [ %6, %1 ] |
| %i.02 = phi i32 [ 0, %0 ], [ %7, %1 ] |
| %2 = getelementptr inbounds i16, i16* %.04, i64 1 |
| %3 = load i16, i16* %.04, align 2 |
| %4 = zext i16 %3 to i32 |
| %5 = shl nuw nsw i32 %4, 7 |
| %6 = getelementptr inbounds i32, i32* %.013, i64 1 |
| store i32 %5, i32* %.013, align 4 |
| %7 = add nsw i32 %i.02, 1 |
| %exitcond = icmp eq i32 %7, 256 |
| br i1 %exitcond, label %8, label %1 |
| |
| ; <label>:8 ; preds = %1 |
| ret void |
| } |
| |
| |