From 6d207a761f3b4ba5a619b178de55b8668c9b64ec Mon Sep 17 00:00:00 2001
From: Zhou Sheng <zhousheng00@gmail.com>
Date: Thu, 26 Apr 2007 16:44:48 +0000
Subject: [PATCH] Add two test cases to cover apintification change.

llvm-svn: 36476
---
 .../ScalarEvolution/SolveQuadraticEquation.ll | 32 +++++++++++++++++
 .../Analysis/ScalarEvolution/trip-count2.ll   | 35 +++++++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 llvm/test/Analysis/ScalarEvolution/SolveQuadraticEquation.ll
 create mode 100644 llvm/test/Analysis/ScalarEvolution/trip-count2.ll

diff --git a/llvm/test/Analysis/ScalarEvolution/SolveQuadraticEquation.ll b/llvm/test/Analysis/ScalarEvolution/SolveQuadraticEquation.ll
new file mode 100644
index 000000000000..aeaf35673ca0
--- /dev/null
+++ b/llvm/test/Analysis/ScalarEvolution/SolveQuadraticEquation.ll
@@ -0,0 +1,32 @@
+; RUN: llvm-as < %s | opt -analyze -scalar-evolution |& \
+; RUN:   grep {100 iterations}
+; PR1101
+
+@A = weak global [1000 x i32] zeroinitializer, align 32         
+
+
+define void @test(i32 %N) {
+entry:
+        "alloca point" = bitcast i32 0 to i32           ; <i32> [#uses=0]
+        br label %bb3
+
+bb:             ; preds = %bb3
+        %tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0          ; <i32*> [#uses=1]
+        store i32 123, i32* %tmp
+        %tmp2 = add i32 %i.0, 1         ; <i32> [#uses=1]
+        br label %bb3
+
+bb3:            ; preds = %bb, %entry
+        %i.0 = phi i32 [ 2, %entry ], [ %tmp2, %bb ]            ; <i32> [#uses=3]
+        %SQ = mul i32 %i.0, %i.0
+        %tmp4 = mul i32 %i.0, 2
+        %tmp5 = sub i32 %SQ, %tmp4
+        %tmp3 = icmp sle i32 %tmp5, 9999          ; <i1> [#uses=1]
+        br i1 %tmp3, label %bb, label %bb5
+
+bb5:            ; preds = %bb3
+        br label %return
+
+return:         ; preds = %bb5
+        ret void
+}
diff --git a/llvm/test/Analysis/ScalarEvolution/trip-count2.ll b/llvm/test/Analysis/ScalarEvolution/trip-count2.ll
new file mode 100644
index 000000000000..e003c19f31b8
--- /dev/null
+++ b/llvm/test/Analysis/ScalarEvolution/trip-count2.ll
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | opt -analyze -scalar-evolution |& \
+; RUN:   grep {4 iterations}
+; PR1101
+
+@A = weak global [1000 x i32] zeroinitializer, align 32         
+
+
+define void @test(i32 %N) {
+entry:
+        "alloca point" = bitcast i32 0 to i32           ; <i32> [#uses=0]
+        br label %bb3
+
+bb:             ; preds = %bb3
+        %tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0          ; <i32*> [#uses=1]
+        store i32 123, i32* %tmp
+        %tmp4 = mul i32 %i.0, 4         ; <i32> [#uses=1]
+        %tmp5 = or i32 %tmp4, 1
+        %tmp61 = xor i32 %tmp5, -2147483648
+        %tmp6 = trunc i32 %tmp61 to i16
+        %tmp71 = shl i16 %tmp6, 2
+        %tmp7 = zext i16 %tmp71 to i32
+        %tmp2 = add i32 %tmp7, %i.0
+        br label %bb3
+
+bb3:            ; preds = %bb, %entry
+        %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ]            ; <i32> [#uses=3]
+        %tmp3 = icmp sle i32 %i.0, 9999          ; <i1> [#uses=1]
+        br i1 %tmp3, label %bb, label %bb5
+
+bb5:            ; preds = %bb3
+        br label %return
+
+return:         ; preds = %bb5
+        ret void
+}