testcase for pr1109

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33194 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/BasicAA/2007-01-13-BasePointerBadNoAlias.ll b/test/Analysis/BasicAA/2007-01-13-BasePointerBadNoAlias.ll
new file mode 100644 (file)
index 0000000..19c5c06
--- /dev/null
+++ b/test/Analysis/BasicAA/2007-01-13-BasePointerBadNoAlias.ll
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | grep 'sub i32' &&
+; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | not grep 'ret i32 0'
+; PR1109
+
+target datalayout = "e-p:32:32"
+target endian = little
+target pointersize = 32
+target triple = "i686-apple-darwin8"
+       %struct.CONSTRAINT = type { i32, i32, i32, i32 }
+       %struct.FILE_POS = type { i8, i8, i16, i32 }
+       %struct.FIRST_UNION = type { %struct.FILE_POS }
+       %struct.FOURTH_UNION = type { %struct.CONSTRAINT }
+       %struct.GAP = type { i8, i8, i16 }
+       %struct.LIST = type { %struct.rec*, %struct.rec* }
+       %struct.SECOND_UNION = type { { i16, i8, i8 } }
+       %struct.STYLE = type { { %struct.GAP }, { %struct.GAP }, i16, i16, i16, i8, i8 }
+       %struct.THIRD_UNION = type { { [2 x i32], [2 x i32] } }
+       %struct.closure_type = type { [2 x %struct.LIST], %struct.FIRST_UNION, %struct.SECOND_UNION, %struct.THIRD_UNION, %struct.FOURTH_UNION, %struct.rec*, { %struct.rec* } }
+       %struct.head_type = type { [2 x %struct.LIST], %struct.FIRST_UNION, %struct.SECOND_UNION, %struct.THIRD_UNION, %struct.FOURTH_UNION, %struct.rec*, { %struct.rec* }, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, i32 }
+       %struct.rec = type { %struct.head_type }
+
+implementation   ; Functions:
+
+define i32 %test(%struct.closure_type* %tmp18169) {
+       %tmp18174 = getelementptr %struct.closure_type* %tmp18169, i32 0, i32 4, i32 0, i32 0           ; <i32*> [#uses=2]
+       %tmp18269 = bitcast i32* %tmp18174  to %struct.STYLE*           ; <%struct.STYLE*> [#uses=1]
+       %A = load i32* %tmp18174                ; <i32> [#uses=1]
+
+        %tmp18272 = getelementptr %struct.STYLE* %tmp18269, i32 0, i32 0, i32 0, i32 2          ; <i16*> [#uses=1]
+        store i16 123, i16* %tmp18272
+
+       %Q = load i32* %tmp18174                ; <i32> [#uses=1]
+       %Z = sub i32 %A, %Q             ; <i32> [#uses=1]
+       ret i32 %Z
+}