[llvm-commits] [llvm] r60987 - /llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll

[Chris Lattner]

Author: lattner
Date: Sat Dec 13 12:39:44 2008
New Revision: 60987

URL: http://llvm.org/viewvc/llvm-project?rev=60987&view=rev
Log:
gvn should never crash on this.

Added:
    llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll

Added: llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll?rev=60987&view=auto

==============================================================================
--- llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll (added)
+++ llvm/trunk/test/Transforms/GVN/2008-12-12-RLE-Crash.ll Sat Dec 13 12:39:44 2008
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | opt -gvn | llvm-dis
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i386-apple-darwin7"
+
+define i32 @main(i32 %argc, i8** %argv) nounwind {
+entry:
+	br label %bb84
+
+bb41:		; preds = %bb82
+	%tmp = load i8* %opt.0, align 1		; <i8> [#uses=0]
+	%tmp1 = getelementptr i8* %opt.0, i32 1		; <i8*> [#uses=2]
+	switch i32 0, label %bb81 [
+		i32 102, label %bb82
+		i32 110, label %bb79
+		i32 118, label %bb80
+	]
+
+bb79:		; preds = %bb41
+	br label %bb82
+
+bb80:		; preds = %bb41
+	ret i32 0
+
+bb81:		; preds = %bb41
+	ret i32 1
+
+bb82:		; preds = %bb84, %bb79, %bb41
+	%opt.0 = phi i8* [ %tmp3, %bb84 ], [ %tmp1, %bb79 ], [ %tmp1, %bb41 ]		; <i8*> [#uses=3]
+	%tmp2 = load i8* %opt.0, align 1		; <i8> [#uses=0]
+	br i1 false, label %bb84, label %bb41
+
+bb84:		; preds = %bb82, %entry
+	%tmp3 = getelementptr i8* null, i32 1		; <i8*> [#uses=1]
+	br label %bb82
+}