new testcase for pr1101

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33192 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/ScalarEvolution/dg.exp b/test/Analysis/ScalarEvolution/dg.exp
new file mode 100644 (file)
index 0000000..d708c3f
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/dg.exp
@@ -0,0 +1,3 @@
+load_lib llvm-dg.exp
+
+llvm-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.ll]] $objdir $srcdir $subdir $target_triplet $llvmgcc $llvmgxx $prcontext $llvmgcc_version

diff --git a/test/Analysis/ScalarEvolution/trip-count.ll b/test/Analysis/ScalarEvolution/trip-count.ll
new file mode 100644 (file)
index 0000000..347cffd
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/trip-count.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | opt -analyze -scalar-evolution 2>&1 | grep '10000 iterations'
+; PR1101
+
+%A = weak global [1000 x i32] zeroinitializer, align 32         
+
+implementation   ; Functions:
+
+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 [ 0, %entry ], [ %tmp2, %bb ]            ; <i32> [#uses=3]
+        %tmp = icmp sle i32 %i.0, 9999          ; <i1> [#uses=1]
+        br i1 %tmp, label %bb, label %bb5
+
+bb5:            ; preds = %bb3
+        br label %return
+
+return:         ; preds = %bb5
+        ret void
+}
+
+