--- /dev/null
+; RUN: opt < %s -basicaa -slp-vectorizer -S | FileCheck %s
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.9.0"
+
+@A = common global [2000 x double] zeroinitializer, align 16
+@B = common global [2000 x double] zeroinitializer, align 16
+@C = common global [2000 x float] zeroinitializer, align 16
+@D = common global [2000 x float] zeroinitializer, align 16
+
+; Currently SCEV isn't smart enough to figure out that accesses
+; A[3*i], A[3*i+1] and A[3*i+2] are consecutive, but in future
+; that would hopefully be fixed. For now, check that this isn't
+; vectorized.
+; CHECK-LABEL: foo_3double
+; CHECK-NOT: x double>
+; Function Attrs: nounwind ssp uwtable
+define void @foo_3double(i32 %u) #0 {
+entry:
+ %u.addr = alloca i32, align 4
+ store i32 %u, i32* %u.addr, align 4
+ %mul = mul nsw i32 %u, 3
+ %idxprom = sext i32 %mul to i64
+ %arrayidx = getelementptr inbounds [2000 x double]* @A, i32 0, i64 %idxprom
+ %0 = load double* %arrayidx, align 8
+ %arrayidx4 = getelementptr inbounds [2000 x double]* @B, i32 0, i64 %idxprom
+ %1 = load double* %arrayidx4, align 8
+ %add5 = fadd double %0, %1
+ store double %add5, double* %arrayidx, align 8
+ %add11 = add nsw i32 %mul, 1
+ %idxprom12 = sext i32 %add11 to i64
+ %arrayidx13 = getelementptr inbounds [2000 x double]* @A, i32 0, i64 %idxprom12
+ %2 = load double* %arrayidx13, align 8
+ %arrayidx17 = getelementptr inbounds [2000 x double]* @B, i32 0, i64 %idxprom12
+ %3 = load double* %arrayidx17, align 8
+ %add18 = fadd double %2, %3
+ store double %add18, double* %arrayidx13, align 8
+ %add24 = add nsw i32 %mul, 2
+ %idxprom25 = sext i32 %add24 to i64
+ %arrayidx26 = getelementptr inbounds [2000 x double]* @A, i32 0, i64 %idxprom25
+ %4 = load double* %arrayidx26, align 8
+ %arrayidx30 = getelementptr inbounds [2000 x double]* @B, i32 0, i64 %idxprom25
+ %5 = load double* %arrayidx30, align 8
+ %add31 = fadd double %4, %5
+ store double %add31, double* %arrayidx26, align 8
+ ret void
+}
+
+; SCEV should be able to tell that accesses A[C1 + C2*i], A[C1 + C2*i], ...
+; A[C1 + C2*i] are consecutive, if C2 is a power of 2, and C2 > C1 > 0.
+; Thus, the following code should be vectorized.
+; CHECK-LABEL: foo_2double
+; CHECK: x double>
+; Function Attrs: nounwind ssp uwtable
+define void @foo_2double(i32 %u) #0 {
+entry:
+ %u.addr = alloca i32, align 4
+ store i32 %u, i32* %u.addr, align 4
+ %mul = mul nsw i32 %u, 2
+ %idxprom = sext i32 %mul to i64
+ %arrayidx = getelementptr inbounds [2000 x double]* @A, i32 0, i64 %idxprom
+ %0 = load double* %arrayidx, align 8
+ %arrayidx4 = getelementptr inbounds [2000 x double]* @B, i32 0, i64 %idxprom
+ %1 = load double* %arrayidx4, align 8
+ %add5 = fadd double %0, %1
+ store double %add5, double* %arrayidx, align 8
+ %add11 = add nsw i32 %mul, 1
+ %idxprom12 = sext i32 %add11 to i64
+ %arrayidx13 = getelementptr inbounds [2000 x double]* @A, i32 0, i64 %idxprom12
+ %2 = load double* %arrayidx13, align 8
+ %arrayidx17 = getelementptr inbounds [2000 x double]* @B, i32 0, i64 %idxprom12
+ %3 = load double* %arrayidx17, align 8
+ %add18 = fadd double %2, %3
+ store double %add18, double* %arrayidx13, align 8
+ ret void
+}
+
+; Similar to the previous test, but with different datatype.
+; CHECK-LABEL: foo_4float
+; CHECK: x float>
+; Function Attrs: nounwind ssp uwtable
+define void @foo_4float(i32 %u) #0 {
+entry:
+ %u.addr = alloca i32, align 4
+ store i32 %u, i32* %u.addr, align 4
+ %mul = mul nsw i32 %u, 4
+ %idxprom = sext i32 %mul to i64
+ %arrayidx = getelementptr inbounds [2000 x float]* @C, i32 0, i64 %idxprom
+ %0 = load float* %arrayidx, align 4
+ %arrayidx4 = getelementptr inbounds [2000 x float]* @D, i32 0, i64 %idxprom
+ %1 = load float* %arrayidx4, align 4
+ %add5 = fadd float %0, %1
+ store float %add5, float* %arrayidx, align 4
+ %add11 = add nsw i32 %mul, 1
+ %idxprom12 = sext i32 %add11 to i64
+ %arrayidx13 = getelementptr inbounds [2000 x float]* @C, i32 0, i64 %idxprom12
+ %2 = load float* %arrayidx13, align 4
+ %arrayidx17 = getelementptr inbounds [2000 x float]* @D, i32 0, i64 %idxprom12
+ %3 = load float* %arrayidx17, align 4
+ %add18 = fadd float %2, %3
+ store float %add18, float* %arrayidx13, align 4
+ %add24 = add nsw i32 %mul, 2
+ %idxprom25 = sext i32 %add24 to i64
+ %arrayidx26 = getelementptr inbounds [2000 x float]* @C, i32 0, i64 %idxprom25
+ %4 = load float* %arrayidx26, align 4
+ %arrayidx30 = getelementptr inbounds [2000 x float]* @D, i32 0, i64 %idxprom25
+ %5 = load float* %arrayidx30, align 4
+ %add31 = fadd float %4, %5
+ store float %add31, float* %arrayidx26, align 4
+ %add37 = add nsw i32 %mul, 3
+ %idxprom38 = sext i32 %add37 to i64
+ %arrayidx39 = getelementptr inbounds [2000 x float]* @C, i32 0, i64 %idxprom38
+ %6 = load float* %arrayidx39, align 4
+ %arrayidx43 = getelementptr inbounds [2000 x float]* @D, i32 0, i64 %idxprom38
+ %7 = load float* %arrayidx43, align 4
+ %add44 = fadd float %6, %7
+ store float %add44, float* %arrayidx39, align 4
+ ret void
+}
+
+; Similar to the previous tests, but now we are dealing with AddRec SCEV.
+; CHECK-LABEL: foo_loop
+; CHECK: x double>
+; Function Attrs: nounwind ssp uwtable
+define i32 @foo_loop(double* %A, i32 %n) #0 {
+entry:
+ %A.addr = alloca double*, align 8
+ %n.addr = alloca i32, align 4
+ %sum = alloca double, align 8
+ %i = alloca i32, align 4
+ store double* %A, double** %A.addr, align 8
+ store i32 %n, i32* %n.addr, align 4
+ store double 0.000000e+00, double* %sum, align 8
+ store i32 0, i32* %i, align 4
+ %cmp1 = icmp slt i32 0, %n
+ br i1 %cmp1, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph: ; preds = %entry
+ br label %for.body
+
+for.body: ; preds = %for.body.lr.ph, %for.body
+ %0 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
+ %1 = phi double [ 0.000000e+00, %for.body.lr.ph ], [ %add7, %for.body ]
+ %mul = mul nsw i32 %0, 2
+ %idxprom = sext i32 %mul to i64
+ %arrayidx = getelementptr inbounds double* %A, i64 %idxprom
+ %2 = load double* %arrayidx, align 8
+ %mul1 = fmul double 7.000000e+00, %2
+ %add = add nsw i32 %mul, 1
+ %idxprom3 = sext i32 %add to i64
+ %arrayidx4 = getelementptr inbounds double* %A, i64 %idxprom3
+ %3 = load double* %arrayidx4, align 8
+ %mul5 = fmul double 7.000000e+00, %3
+ %add6 = fadd double %mul1, %mul5
+ %add7 = fadd double %1, %add6
+ store double %add7, double* %sum, align 8
+ %inc = add nsw i32 %0, 1
+ store i32 %inc, i32* %i, align 4
+ %cmp = icmp slt i32 %inc, %n
+ br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
+
+for.cond.for.end_crit_edge: ; preds = %for.body
+ %split = phi double [ %add7, %for.body ]
+ br label %for.end
+
+for.end: ; preds = %for.cond.for.end_crit_edge, %entry
+ %.lcssa = phi double [ %split, %for.cond.for.end_crit_edge ], [ 0.000000e+00, %entry ]
+ %conv = fptosi double %.lcssa to i32
+ ret i32 %conv
+}
+
+attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.ident = !{!0}
+
+!0 = metadata !{metadata !"clang version 3.5.0 "}