1; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 -debug-only=loop-vectorize -S 2>&1 | FileCheck %s 2; REQUIRES: asserts 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-unknown-linux-gnu" 5 6; CHECK-LABEL: test 7; CHECK-DAG: LV: Found uniform instruction: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 8; CHECK-DAG: LV: Found uniform instruction: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 9; CHECK-DAG: LV: Found uniform instruction: %exitcond = icmp eq i64 %indvars.iv, 1599 10 11define void @test(float* noalias nocapture %a, float* noalias nocapture readonly %b) #0 { 12entry: 13 br label %for.body 14 15for.body: ; preds = %for.body, %entry 16 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 17 %arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv 18 %tmp0 = load float, float* %arrayidx, align 4 19 %add = fadd float %tmp0, 1.000000e+00 20 %arrayidx5 = getelementptr inbounds float, float* %a, i64 %indvars.iv 21 store float %add, float* %arrayidx5, align 4 22 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 23 %exitcond = icmp eq i64 %indvars.iv, 1599 24 br i1 %exitcond, label %for.end, label %for.body 25 26for.end: ; preds = %for.body 27 ret void 28} 29 30; CHECK-LABEL: foo 31; CHECK-DAG: LV: Found uniform instruction: %cond = icmp eq i64 %i.next, %n 32; CHECK-DAG: LV: Found uniform instruction: %tmp1 = getelementptr inbounds i32, i32* %a, i32 %tmp0 33; CHECK-NOT: LV: Found uniform instruction: %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ] 34 35define void @foo(i32* %a, i64 %n) { 36entry: 37 br label %for.body 38 39for.body: 40 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ] 41 %tmp0 = trunc i64 %i to i32 42 %tmp1 = getelementptr inbounds i32, i32* %a, i32 %tmp0 43 store i32 %tmp0, i32* %tmp1, align 4 44 %i.next = add nuw nsw i64 %i, 1 45 %cond = icmp eq i64 %i.next, %n 46 br i1 %cond, label %for.end, label %for.body 47 48for.end: 49 ret void 50} 51 52; CHECK-LABEL: goo 53; Check %indvars.iv and %indvars.iv.next are uniform instructions even if they are used outside of loop. 54; CHECK-DAG: LV: Found uniform instruction: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 55; CHECK-DAG: LV: Found uniform instruction: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 56; CHECK-DAG: LV: Found uniform instruction: %exitcond = icmp eq i64 %indvars.iv, 1599 57 58define i64 @goo(float* noalias nocapture %a, float* noalias nocapture readonly %b) #0 { 59entry: 60 br label %for.body 61 62for.body: ; preds = %for.body, %entry 63 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 64 %arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv 65 %tmp0 = load float, float* %arrayidx, align 4 66 %add = fadd float %tmp0, 1.000000e+00 67 %arrayidx5 = getelementptr inbounds float, float* %a, i64 %indvars.iv 68 store float %add, float* %arrayidx5, align 4 69 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 70 %exitcond = icmp eq i64 %indvars.iv, 1599 71 br i1 %exitcond, label %for.end, label %for.body 72 73for.end: ; preds = %for.body 74 %retval = add i64 %indvars.iv, %indvars.iv.next 75 ret i64 %retval 76} 77 78; CHECK-LABEL: PR38786 79; Check that first order recurrence phis (%phi32 and %phi64) are not uniform. 80; CHECK-NOT: LV: Found uniform instruction: %phi 81define void @PR38786(double* %y, double* %x, i64 %n) { 82entry: 83 br label %for.body 84 85for.body: 86 %phi32 = phi i32 [ 0, %entry ], [ %i32next, %for.body ] 87 %phi64 = phi i64 [ 0, %entry ], [ %i64next, %for.body ] 88 %i32next = add i32 %phi32, 1 89 %i64next = zext i32 %i32next to i64 90 %xip = getelementptr inbounds double, double* %x, i64 %i64next 91 %yip = getelementptr inbounds double, double* %y, i64 %phi64 92 %xi = load double, double* %xip, align 8 93 store double %xi, double* %yip, align 8 94 %cmp = icmp slt i64 %i64next, %n 95 br i1 %cmp, label %for.body, label %for.end 96 97for.end: 98 ret void 99} 100