1 files changed, 312 insertions, 0 deletions
diff --git a/llvm/test/Analysis/DependenceAnalysis/SymbolicRDIV.ll b/llvm/test/Analysis/DependenceAnalysis/SymbolicRDIV.ll
new file mode 100644
index 00000000000..2a1b4e7e971
--- /dev/null
+++ b/llvm/test/Analysis/DependenceAnalysis/SymbolicRDIV.ll
@@ -0,0 +1,312 @@
+; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
+
+; ModuleID = 'SymbolicRDIV.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 int i = 0; i < n1; i++)
+;;    A[2*i + n1] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[3*j + 3*n1];
+
+define void @symbolicrdiv0(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond1.preheader, label %for.body
+
+for.cond1.preheader:                              ; preds = %for.body, %entry
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.end11, label %for.body4
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %mul = shl nsw i64 %i.05, 1
+  %add = add i64 %mul, %n1
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond1.preheader
+
+for.body4:                                        ; preds = %for.body4, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc10, %for.body4 ], [ 0, %for.cond1.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.cond1.preheader ]
+  %mul56 = add i64 %j.03, %n1
+  %add7 = mul i64 %mul56, 3
+  %arrayidx8 = getelementptr inbounds i32* %A, i64 %add7
+  %0 = load i32* %arrayidx8, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc10 = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc10, %n2
+  br i1 %cmp2, label %for.body4, label %for.end11
+
+for.end11:                                        ; preds = %for.body4, %for.cond1.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    A[2*i + 5*n2] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[3*j + 2*n2];
+
+define void @symbolicrdiv1(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond2.preheader, label %for.body
+
+for.cond2.preheader:                              ; preds = %for.body, %entry
+  %cmp31 = icmp eq i64 %n2, 0
+  br i1 %cmp31, label %for.end12, label %for.body5
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %mul = shl nsw i64 %i.05, 1
+  %mul1 = mul i64 %n2, 5
+  %add = add i64 %mul, %mul1
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond2.preheader
+
+for.body5:                                        ; preds = %for.body5, %for.cond2.preheader
+  %j.03 = phi i64 [ %inc11, %for.body5 ], [ 0, %for.cond2.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body5 ], [ %B, %for.cond2.preheader ]
+  %mul6 = mul nsw i64 %j.03, 3
+  %mul7 = shl i64 %n2, 1
+  %add8 = add i64 %mul6, %mul7
+  %arrayidx9 = getelementptr inbounds i32* %A, i64 %add8
+  %0 = load i32* %arrayidx9, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc11 = add nsw i64 %j.03, 1
+  %cmp3 = icmp ult i64 %inc11, %n2
+  br i1 %cmp3, label %for.body5, label %for.end12
+
+for.end12:                                        ; preds = %for.body5, %for.cond2.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    A[2*i - n2] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[-j + 2*n1];
+
+define void @symbolicrdiv2(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond1.preheader, label %for.body
+
+for.cond1.preheader:                              ; preds = %for.body, %entry
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.end10, label %for.body4
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %mul = shl nsw i64 %i.05, 1
+  %sub = sub i64 %mul, %n2
+  %arrayidx = getelementptr inbounds i32* %A, i64 %sub
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond1.preheader
+
+for.body4:                                        ; preds = %for.body4, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.cond1.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.cond1.preheader ]
+  %mul6 = shl i64 %n1, 1
+  %add = sub i64 %mul6, %j.03
+  %arrayidx7 = getelementptr inbounds i32* %A, i64 %add
+  %0 = load i32* %arrayidx7, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc9 = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc9, %n2
+  br i1 %cmp2, label %for.body4, label %for.end10
+
+for.end10:                                        ; preds = %for.body4, %for.cond1.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    A[-i + n2] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[j - n1];
+
+define void @symbolicrdiv3(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond1.preheader, label %for.body
+
+for.cond1.preheader:                              ; preds = %for.body, %entry
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.end9, label %for.body4
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %add = sub i64 %n2, %i.05
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond1.preheader
+
+for.body4:                                        ; preds = %for.body4, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc8, %for.body4 ], [ 0, %for.cond1.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.cond1.preheader ]
+  %sub5 = sub i64 %j.03, %n1
+  %arrayidx6 = getelementptr inbounds i32* %A, i64 %sub5
+  %0 = load i32* %arrayidx6, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc8 = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc8, %n2
+  br i1 %cmp2, label %for.body4, label %for.end9
+
+for.end9:                                         ; preds = %for.body4, %for.cond1.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    A[-i + 2*n1] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[-j + n1];
+
+define void @symbolicrdiv4(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond1.preheader, label %for.body
+
+for.cond1.preheader:                              ; preds = %for.body, %entry
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.end10, label %for.body4
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %mul = shl i64 %n1, 1
+  %add = sub i64 %mul, %i.05
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond1.preheader
+
+for.body4:                                        ; preds = %for.body4, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.cond1.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.cond1.preheader ]
+  %add6 = sub i64 %n1, %j.03
+  %arrayidx7 = getelementptr inbounds i32* %A, i64 %add6
+  %0 = load i32* %arrayidx7, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc9 = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc9, %n2
+  br i1 %cmp2, label %for.body4, label %for.end10
+
+for.end10:                                        ; preds = %for.body4, %for.cond1.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    A[-i + n2] = ...
+;;  for (long int j = 0; j < n2; j++)
+;;    ... = A[-j + 2*n2];
+
+define void @symbolicrdiv5(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.cond1.preheader, label %for.body
+
+for.cond1.preheader:                              ; preds = %for.body, %entry
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.end10, label %for.body4
+
+for.body:                                         ; preds = %for.body, %entry
+  %i.05 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
+  %conv = trunc i64 %i.05 to i32
+  %add = sub i64 %n2, %i.05
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %inc = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc, %n1
+  br i1 %cmp, label %for.body, label %for.cond1.preheader
+
+for.body4:                                        ; preds = %for.body4, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.cond1.preheader ]
+  %B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.cond1.preheader ]
+  %mul = shl i64 %n2, 1
+  %add6 = sub i64 %mul, %j.03
+  %arrayidx7 = getelementptr inbounds i32* %A, i64 %add6
+  %0 = load i32* %arrayidx7, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
+  store i32 %0, i32* %B.addr.02, align 4
+  %inc9 = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc9, %n2
+  br i1 %cmp2, label %for.body4, label %for.end10
+
+for.end10:                                        ; preds = %for.body4, %for.cond1.preheader
+  ret void
+}
+
+
+;;  for (long int i = 0; i < n1; i++)
+;;    for (long int j = 0; j < n2; j++)
+;;      A[j -i + n2] = ...
+;;      ... = A[2*n2];
+
+define void @symbolicrdiv6(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
+entry:
+  %cmp4 = icmp eq i64 %n1, 0
+  br i1 %cmp4, label %for.end7, label %for.cond1.preheader
+
+for.cond1.preheader:                              ; preds = %for.inc5, %entry
+  %B.addr.06 = phi i32* [ %B.addr.1.lcssa, %for.inc5 ], [ %B, %entry ]
+  %i.05 = phi i64 [ %inc6, %for.inc5 ], [ 0, %entry ]
+  %cmp21 = icmp eq i64 %n2, 0
+  br i1 %cmp21, label %for.inc5, label %for.body3
+
+for.body3:                                        ; preds = %for.body3, %for.cond1.preheader
+  %j.03 = phi i64 [ %inc, %for.body3 ], [ 0, %for.cond1.preheader ]
+  %B.addr.12 = phi i32* [ %incdec.ptr, %for.body3 ], [ %B.addr.06, %for.cond1.preheader ]
+  %conv = trunc i64 %i.05 to i32
+  %sub = sub nsw i64 %j.03, %i.05
+  %add = add i64 %sub, %n2
+  %arrayidx = getelementptr inbounds i32* %A, i64 %add
+  store i32 %conv, i32* %arrayidx, align 4
+  %mul = shl i64 %n2, 1
+  %arrayidx4 = getelementptr inbounds i32* %A, i64 %mul
+  %0 = load i32* %arrayidx4, align 4
+; CHECK: da analyze - none!
+  %incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
+  store i32 %0, i32* %B.addr.12, align 4
+  %inc = add nsw i64 %j.03, 1
+  %cmp2 = icmp ult i64 %inc, %n2
+  br i1 %cmp2, label %for.body3, label %for.inc5
+
+for.inc5:                                         ; preds = %for.body3, %for.cond1.preheader
+  %B.addr.1.lcssa = phi i32* [ %B.addr.06, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
+  %inc6 = add nsw i64 %i.05, 1
+  %cmp = icmp ult i64 %inc6, %n1
+  br i1 %cmp, label %for.cond1.preheader, label %for.end7
+
+for.end7:                                         ; preds = %for.inc5, %entry
+  ret void
+}