125 lines · plain
1; RUN: opt < %s -S -passes=loop-unroll -mcpu=nehalem | FileCheck %s2; RUN: opt < %s -S -passes=loop-unroll -unroll-runtime=0 | FileCheck -check-prefix=CHECK-NOUNRL %s3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6define void @foo(ptr noalias nocapture readnone %ip, double %alpha, ptr noalias nocapture %a, ptr noalias nocapture readonly %b) #0 {7entry:8 br label %vector.body9 10vector.body: ; preds = %vector.body, %entry11 %index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]12 %0 = getelementptr inbounds double, ptr %b, i64 %index13 %wide.load = load <2 x double>, ptr %0, align 814 %.sum9 = or i64 %index, 215 %1 = getelementptr double, ptr %b, i64 %.sum916 %wide.load8 = load <2 x double>, ptr %1, align 817 %2 = fadd <2 x double> %wide.load, <double 1.000000e+00, double 1.000000e+00>18 %3 = fadd <2 x double> %wide.load8, <double 1.000000e+00, double 1.000000e+00>19 %4 = getelementptr inbounds double, ptr %a, i64 %index20 store <2 x double> %2, ptr %4, align 821 %.sum10 = or i64 %index, 222 %5 = getelementptr double, ptr %a, i64 %.sum1023 store <2 x double> %3, ptr %5, align 824 %index.next = add i64 %index, 425 %6 = icmp eq i64 %index.next, 160026 br i1 %6, label %for.end, label %vector.body27 28; FIXME: We should probably unroll this loop by a factor of 2, but the cost29; model needs to be fixed to account for instructions likely to be folded30; as part of an addressing mode.31; CHECK-LABEL: @foo32; CHECK-NOUNRL-LABEL: @foo33 34for.end: ; preds = %vector.body35 ret void36}37 38define void @bar(ptr noalias nocapture readnone %ip, double %alpha, ptr noalias nocapture %a, ptr noalias nocapture readonly %b) #0 {39entry:40 br label %vector.body41 42vector.body: ; preds = %vector.body, %entry43 %index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ]44 %v0 = getelementptr inbounds double, ptr %b, i64 %index45 %wide.load = load <2 x double>, ptr %v0, align 846 %v4 = fadd <2 x double> %wide.load, <double 1.000000e+00, double 1.000000e+00>47 %v5 = fmul <2 x double> %v4, <double 8.000000e+00, double 8.000000e+00>48 %v6 = getelementptr inbounds double, ptr %a, i64 %index49 store <2 x double> %v5, ptr %v6, align 850 %index.next = add i64 %index, 251 %v10 = icmp eq i64 %index.next, 160052 br i1 %v10, label %for.end, label %vector.body53 54; FIXME: We should probably unroll this loop by a factor of 2, but the cost55; model needs to first to fixed to account for instructions likely to be folded56; as part of an addressing mode.57 58; CHECK-LABEL: @bar59; CHECK: fadd60; CHECK-NEXT: fmul61; CHECK: fadd62; CHECK-NEXT: fmul63 64; CHECK-NOUNRL-LABEL: @bar65; CHECK-NOUNRL: fadd66; CHECK-NOUNRL-NEXT: fmul67; CHECK-NOUNRL-NOT: fadd68 69for.end: ; preds = %vector.body70 ret void71}72 73define zeroext i16 @test1(ptr nocapture readonly %arr, i32 %n) #0 {74entry:75 %cmp25 = icmp eq i32 %n, 076 br i1 %cmp25, label %for.end, label %for.body77 78for.body: ; preds = %entry, %for.body79 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]80 %reduction.026 = phi i16 [ %add14, %for.body ], [ 0, %entry ]81 %arrayidx = getelementptr inbounds i16, ptr %arr, i64 %indvars.iv82 %0 = load i16, ptr %arrayidx, align 283 %mul = shl i16 %0, 184 %add = add i16 %mul, %reduction.02685 %sext = mul i64 %indvars.iv, 1288490188886 %idxprom3 = ashr exact i64 %sext, 3287 %arrayidx4 = getelementptr inbounds i16, ptr %arr, i64 %idxprom388 %1 = load i16, ptr %arrayidx4, align 289 %mul2 = shl i16 %1, 190 %add7 = add i16 %add, %mul291 %sext28 = mul i64 %indvars.iv, 2147483648092 %idxprom10 = ashr exact i64 %sext28, 3293 %arrayidx11 = getelementptr inbounds i16, ptr %arr, i64 %idxprom1094 %2 = load i16, ptr %arrayidx11, align 295 %mul3 = shl i16 %2, 196 %add14 = add i16 %add7, %mul397 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 198 %lftr.wideiv = trunc i64 %indvars.iv.next to i3299 %exitcond = icmp eq i32 %lftr.wideiv, %n100 br i1 %exitcond, label %for.end, label %for.body101 102for.end: ; preds = %for.body, %entry103 %reduction.0.lcssa = phi i16 [ 0, %entry ], [ %add14, %for.body ]104 ret i16 %reduction.0.lcssa105 106; This loop is too large to be partially unrolled (size=16)107 108; CHECK-LABEL: @test1109; CHECK: br110; CHECK: br111; CHECK: br112; CHECK: br113; CHECK-NOT: br114 115; CHECK-NOUNRL-LABEL: @test1116; CHECK-NOUNRL: br117; CHECK-NOUNRL: br118; CHECK-NOUNRL: br119; CHECK-NOUNRL: br120; CHECK-NOUNRL-NOT: br121}122 123attributes #0 = { nounwind uwtable }124 125