New testcase

llvm-svn: 3385

1 files changed, 25 insertions, 0 deletions

diff --git a/llvm/test/Regression/Transforms/FunctionResolve/2002-08-19-ResolveGlobalVars.ll b/llvm/test/Regression/Transforms/FunctionResolve/2002-08-19-ResolveGlobalVars.ll
new file mode 100644
index 00000000000..7dfbf900604
--- /dev/null
+++ b/llvm/test/Regression/Transforms/FunctionResolve/2002-08-19-ResolveGlobalVars.ll
@@ -0,0 +1,25 @@
+; Test that: extern int X[]  and int X[] = { 1, 2, 3, 4 } are resolved correctly.
+;
+; RUN: if as < %s | opt -gcse -instcombine -constprop -dce | dis | grep getelementptr
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+;
+
+%X = uninitialized global int           ; <int*> [#uses=1]
+%X = global [4 x int] [ int 1, int 2, int 3, int 4 ]            ; <[4 x int]*> [#uses=1]
+
+implementation   ; Functions:
+
+int %foo(int %x) {
+bb1:                                    ;[#uses=0]
+        %reg107-idxcast = cast int %x to uint           ; <uint> [#uses=2]
+        %reg113 = getelementptr int* %X, uint %reg107-idxcast           ; <int*> [#uses=1]
+        %reg120 = getelementptr [4 x int]* %X, uint 0, uint %reg107-idxcast             ; <int*> [#uses=1]
+        %reg123 = sub int* %reg113, %reg120             ; <int*> [#uses=1]
+        %cast232 = cast int* %reg123 to long            ; <long> [#uses=1]
+        %reg234 = div long %cast232, 4          ; <long> [#uses=1]
+        %cast108 = cast long %reg234 to int             ; <int> [#uses=1]
+        ret int %cast108
+}
+