Testcase for PR1015

llvm-svn: 32973

llvm/test/Regression/Transforms/IndVarsSimplify/2007-01-06-TripCount.ll

@@ -0,0 +1,53 @@
+; RUN: llvm-as < %s | opt -indvars -disable-output &&
+; RUN: llvm-as < %s | opt -indvars | llvm-dis | not grep 'ret i32 0'
+; PR1015
+
+target datalayout = "e-p:32:32"
+target endian = little
+target pointersize = 32
+target triple = "i686-apple-darwin8"
+%foo = internal constant [5 x i8] c"\00abc\00"		; <[5 x i8]*> [#uses=1]
+%str = internal constant [4 x i8] c"%d\0A\00"		; <[4 x i8]*> [#uses=1]
+
+implementation   ; Functions:
+
+define i32 %test(i32 %J) {
+entry:
+	br label %bb2
+
+bb:		; preds = %cond_next, %cond_true
+	%tmp1 = add i32 %i.0, 1		; <i32> [#uses=1]
+	br label %bb2
+
+bb2:		; preds = %bb, %entry
+	%i.0 = phi i32 [ 0, %entry ], [ %tmp1, %bb ]		; <i32> [#uses=4]
+	%tmp = icmp eq i32 %i.0, 0		; <bool> [#uses=1]
+	br bool %tmp, label %cond_true, label %cond_next
+
+cond_true:		; preds = %bb2
+	br label %bb
+
+cond_next:		; preds = %bb2
+	%tmp = getelementptr [5 x i8]* %foo, i32 0, i32 %i.0		; <i8*> [#uses=1]
+	%tmp = load i8* %tmp		; <i8> [#uses=1]
+	%tmp5 = icmp eq i8 %tmp, 0		; <bool> [#uses=1]
+	br bool %tmp5, label %bb6, label %bb
+
+bb6:		; preds = %cond_next
+	br label %return
+
+return:		; preds = %bb6
+	ret i32 %i.0
+}
+
+define void %main() {
+entry:
+	%tmp = call i32 %test( i32 0 )		; <i32> [#uses=1]
+	%tmp1 = call i32 (i8*, ...)* %printf( i8* getelementptr ([4 x i8]* %str, i32 0, i32 0), i32 %tmp )		; <i32> [#uses=0]
+	br label %return
+
+return:		; preds = %entry
+	ret void
+}
+
+declare i32 %printf(i8*, ...)