1 files changed, 428 insertions, 0 deletions
diff --git a/test/Analysis/DependenceAnalysis/ExactSIV.ll b/test/Analysis/DependenceAnalysis/ExactSIV.ll
new file mode 100644
index 000000000000..71e050246291
--- /dev/null
+++ b/test/Analysis/DependenceAnalysis/ExactSIV.ll
@@ -0,0 +1,428 @@
+; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
+
+; ModuleID = 'ExactSIV.bc'
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.6.0"
+
+
+;;  for (long unsigned i = 0; i < 10; i++) {
+;;    A[i + 10] = ...
+;;    ... = A[2*i + 1];
+
+define void @exact0(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %add = add i64 %i.02, 10
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %mul = shl i64 %i.02, 1
+  %add13 = or i64 %mul, 1
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %add13
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [<=|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 10
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 10; i++) {
+;;    A[4*i + 10] = ...
+;;    ... = A[2*i + 1];
+
+define void @exact1(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = shl i64 %i.02, 2
+  %add = add i64 %mul, 10
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %mul1 = shl i64 %i.02, 1
+  %add23 = or i64 %mul1, 1
+  %arrayidx3 = getelementptr inbounds i32* %A, i64 %add23
+  %0 = load i32* %arrayidx3, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 10
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 10; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact2(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 10
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 10; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact3(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - flow [>]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 11
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 12; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact4(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - flow [>]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 12
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 12; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact5(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - flow [=>|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 13
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 18; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact6(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - flow [=>|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 18
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 18; i++) {
+;;    A[6*i] = ...
+;;    ... = A[i + 60];
+
+define void @exact7(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, 6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %add = add i64 %i.02, 60
+  %arrayidx1 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx1, align 4
+; CHECK: da analyze - flow [*|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 19
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 10; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact8(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 10
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 10; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact9(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [>]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 11
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 12; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact10(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [>]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 12
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 12; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact11(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [=>|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 13
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i < 18; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact12(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [=>|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 18
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}
+
+
+;;  for (long unsigned i = 0; i <= 18; i++) {
+;;    A[-6*i] = ...
+;;    ... = A[-i - 60];
+
+define void @exact13(i32* %A, i32* %B) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.02 = phi i64 [ 0, %entry ], [ %inc, %for.body ]
+  %B.addr.01 = phi i32* [ %B, %entry ], [ %incdec.ptr, %for.body ]
+  %conv = trunc i64 %i.02 to i32
+  %mul = mul i64 %i.02, -6
+  %arrayidx = getelementptr inbounds i32* %A, i64 %mul
+  store i32 %conv, i32* %arrayidx, align 4
+  %sub1 = sub i64 -60, %i.02
+  %arrayidx2 = getelementptr inbounds i32* %A, i64 %sub1
+  %0 = load i32* %arrayidx2, align 4
+; CHECK: da analyze - flow [*|<]!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.01, i64 1
+  store i32 %0, i32* %B.addr.01, align 4
+  %inc = add i64 %i.02, 1
+  %cmp = icmp ult i64 %inc, 19
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  ret void
+}