1; RUN: opt -loop-rotate -print-memoryssa -disable-output -enable-mssa-loop-dependency -verify-memoryssa %s 2>&1 | FileCheck %s 2; REQUIRES: asserts 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5target triple = "x86_64-grtev4-linux-gnu" 6 7declare double @sqrt(double) 8 9; CHECK-LABEL: @f 10define internal fastcc double @f(i32* %n_, double* %dx) align 32 { 11entry: 12; CHECK: entry: 13; CHECK: MemoryUse(liveOnEntry) 14; CHECK-NOT: 7 = MemoryPhi 15; CHECK-NOT: 6 = MemoryPhi 16 %v0 = load i32, i32* %n_, align 4 17 br label %for.cond 18 19for.cond: ; preds = %for.body, %entry 20 %xmax.0 = phi double [ undef, %entry ], [ %xmax.1, %for.body ] 21 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 22 %cmp = icmp slt i32 %i.0, %v0 23 br i1 %cmp, label %for.body, label %for.end 24 25for.body: ; preds = %for.cond 26 %idxprom = zext i32 %i.0 to i64 27 %arrayidx = getelementptr inbounds double, double* %dx, i64 %idxprom 28 %v1 = load double, double* %arrayidx, align 8 29 %cmp1 = fcmp ueq double %v1, 0.000000e+00 30 %xmax.1 = select i1 %cmp1, double %xmax.0, double %v1 31 %inc = add nuw nsw i32 %i.0, 1 32 br label %for.cond 33 34for.end: ; preds = %for.cond 35 %xmax.0.lcssa = phi double [ %xmax.0, %for.cond ] 36 %cmp2 = fcmp oeq double %xmax.0.lcssa, 0.000000e+00 37 br i1 %cmp2, label %cleanup, label %if.end4 38 39if.end4: ; preds = %for.end 40 %div = fdiv double 1.000000e+00, %xmax.0.lcssa 41 %cmp61 = icmp slt i32 0, %v0 42 br i1 %cmp61, label %for.body7.lr.ph, label %for.end15 43 44for.body7.lr.ph: ; preds = %if.end4 45 br label %for.body7 46 47; CHECK: for.body7: 48; CHECK: 3 = MemoryPhi({for.body7.lr.ph,liveOnEntry},{for.body7,1}) 49for.body7: ; preds = %for.body7.lr.ph, %for.body7 50 %i.13 = phi i32 [ 0, %for.body7.lr.ph ], [ %inc14, %for.body7 ] 51 %sum.02 = phi x86_fp80 [ undef, %for.body7.lr.ph ], [ %add, %for.body7 ] 52 %idxprom9 = zext i32 %i.13 to i64 53 %arrayidx10 = getelementptr inbounds double, double* %dx, i64 %idxprom9 54 %v3 = load double, double* %arrayidx10, align 8 55 %mul11 = fmul double %div, %v3 56 %v2 = call double @sqrt(double %v3) 57 %mul12 = fmul double %mul11, %v2 58 %conv = fpext double %mul12 to x86_fp80 59 %add = fadd x86_fp80 %sum.02, %conv 60 %inc14 = add nuw nsw i32 %i.13, 1 61 %cmp6 = icmp slt i32 %inc14, %v0 62 br i1 %cmp6, label %for.body7, label %for.cond5.for.end15_crit_edge 63 64for.cond5.for.end15_crit_edge: ; preds = %for.body7 65 %split = phi x86_fp80 [ %add, %for.body7 ] 66 br label %for.end15 67 68for.end15: ; preds = %for.cond5.for.end15_crit_edge, %if.end4 69 %sum.0.lcssa = phi x86_fp80 [ %split, %for.cond5.for.end15_crit_edge ], [ undef, %if.end4 ] 70 %conv16 = fptrunc x86_fp80 %sum.0.lcssa to double 71 %call = call double @sqrt(double %conv16) 72 %mul17 = fmul double %call, 0.000000e+00 73 br label %cleanup 74 75cleanup: ; preds = %for.end15, %for.end 76 %retval.0 = phi double [ undef, %for.end ], [ %mul17, %for.end15 ] 77 ret double %retval.0 78} 79