Home | History | Annotate | Download | only in ARM
      1 ; RUN: opt -loop-vectorize -mtriple=thumbv7s-apple-ios6.0.0 -S < %s | FileCheck %s
      2 
      3 target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
      4 
      5 @kernel = global [512 x float] zeroinitializer, align 4
      6 @kernel2 = global [512 x float] zeroinitializer, align 4
      7 @kernel3 = global [512 x float] zeroinitializer, align 4
      8 @kernel4 = global [512 x float] zeroinitializer, align 4
      9 @src_data = global [1536 x float] zeroinitializer, align 4
     10 @r_ = global i8 0, align 4
     11 @g_ = global i8 0, align 4
     12 @b_ = global i8 0, align 4
     13 
     14 ; We don't want to vectorize most loops containing gathers because they are
     15 ; expensive. This function represents a point where vectorization starts to
     16 ; become beneficial.
     17 ; Make sure we are conservative and don't vectorize it.
     18 ; CHECK-NOT: <2 x float>
     19 ; CHECK-NOT: <4 x float>
     20 
     21 define void @_Z4testmm(i32 %size, i32 %offset) {
     22 entry:
     23   %cmp53 = icmp eq i32 %size, 0
     24   br i1 %cmp53, label %for.end, label %for.body.lr.ph
     25 
     26 for.body.lr.ph:
     27   br label %for.body
     28 
     29 for.body:
     30   %r.057 = phi float [ 0.000000e+00, %for.body.lr.ph ], [ %add10, %for.body ]
     31   %g.056 = phi float [ 0.000000e+00, %for.body.lr.ph ], [ %add20, %for.body ]
     32   %v.055 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
     33   %b.054 = phi float [ 0.000000e+00, %for.body.lr.ph ], [ %add30, %for.body ]
     34   %add = add i32 %v.055, %offset
     35   %mul = mul i32 %add, 3
     36   %arrayidx = getelementptr inbounds [1536 x float], [1536 x float]* @src_data, i32 0, i32 %mul
     37   %0 = load float, float* %arrayidx, align 4
     38   %arrayidx2 = getelementptr inbounds [512 x float], [512 x float]* @kernel, i32 0, i32 %v.055
     39   %1 = load float, float* %arrayidx2, align 4
     40   %mul3 = fmul fast float %0, %1
     41   %arrayidx4 = getelementptr inbounds [512 x float], [512 x float]* @kernel2, i32 0, i32 %v.055
     42   %2 = load float, float* %arrayidx4, align 4
     43   %mul5 = fmul fast float %mul3, %2
     44   %arrayidx6 = getelementptr inbounds [512 x float], [512 x float]* @kernel3, i32 0, i32 %v.055
     45   %3 = load float, float* %arrayidx6, align 4
     46   %mul7 = fmul fast float %mul5, %3
     47   %arrayidx8 = getelementptr inbounds [512 x float], [512 x float]* @kernel4, i32 0, i32 %v.055
     48   %4 = load float, float* %arrayidx8, align 4
     49   %mul9 = fmul fast float %mul7, %4
     50   %add10 = fadd fast float %r.057, %mul9
     51   %arrayidx.sum = add i32 %mul, 1
     52   %arrayidx11 = getelementptr inbounds [1536 x float], [1536 x float]* @src_data, i32 0, i32 %arrayidx.sum
     53   %5 = load float, float* %arrayidx11, align 4
     54   %mul13 = fmul fast float %1, %5
     55   %mul15 = fmul fast float %2, %mul13
     56   %mul17 = fmul fast float %3, %mul15
     57   %mul19 = fmul fast float %4, %mul17
     58   %add20 = fadd fast float %g.056, %mul19
     59   %arrayidx.sum52 = add i32 %mul, 2
     60   %arrayidx21 = getelementptr inbounds [1536 x float], [1536 x float]* @src_data, i32 0, i32 %arrayidx.sum52
     61   %6 = load float, float* %arrayidx21, align 4
     62   %mul23 = fmul fast float %1, %6
     63   %mul25 = fmul fast float %2, %mul23
     64   %mul27 = fmul fast float %3, %mul25
     65   %mul29 = fmul fast float %4, %mul27
     66   %add30 = fadd fast float %b.054, %mul29
     67   %inc = add i32 %v.055, 1
     68   %exitcond = icmp ne i32 %inc, %size
     69   br i1 %exitcond, label %for.body, label %for.cond.for.end_crit_edge
     70 
     71 for.cond.for.end_crit_edge:
     72   %add30.lcssa = phi float [ %add30, %for.body ]
     73   %add20.lcssa = phi float [ %add20, %for.body ]
     74   %add10.lcssa = phi float [ %add10, %for.body ]
     75   %phitmp = fptoui float %add10.lcssa to i8
     76   %phitmp60 = fptoui float %add20.lcssa to i8
     77   %phitmp61 = fptoui float %add30.lcssa to i8
     78   br label %for.end
     79 
     80 for.end:
     81   %r.0.lcssa = phi i8 [ %phitmp, %for.cond.for.end_crit_edge ], [ 0, %entry ]
     82   %g.0.lcssa = phi i8 [ %phitmp60, %for.cond.for.end_crit_edge ], [ 0, %entry ]
     83   %b.0.lcssa = phi i8 [ %phitmp61, %for.cond.for.end_crit_edge ], [ 0, %entry ]
     84   store i8 %r.0.lcssa, i8* @r_, align 4
     85   store i8 %g.0.lcssa, i8* @g_, align 4
     86   store i8 %b.0.lcssa, i8* @b_, align 4
     87   ret void
     88 }
     89