New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6942 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/DSGraph/buglobals.ll b/test/Analysis/DSGraph/buglobals.ll
new file mode 100644 (file)
index 0000000..11fc72c
--- /dev/null
+++ b/test/Analysis/DSGraph/buglobals.ll
@@ -0,0 +1,21 @@
+; This tests to make sure that G ends up in the globals graph of the BU pass.
+; If it is not, then %G will get converted to a 'constant' from a 'global'
+;
+; RUN: as < %s | opt -ds-opt -globaldce | dis | grep %G
+
+
+%G = internal global int 0             ; <int*> [#uses=2]
+
+implementation   ; Functions:
+
+internal void %foo() {
+       %tmp.0 = load int* %G           ; <int> [#uses=1]
+       %tmp.1 = add int %tmp.0, 1              ; <int> [#uses=1]
+       store int %tmp.1, int* %G
+       ret void
+}
+
+int %main() {
+       call void %foo( )
+       ret int 0
+}

diff --git a/test/Analysis/DSGraph/constantize.ll b/test/Analysis/DSGraph/constantize.ll
new file mode 100644 (file)
index 0000000..08f0338
--- /dev/null
+++ b/test/Analysis/DSGraph/constantize.ll
@@ -0,0 +1,13 @@
+; Make sure that the ds-opt pass is constantizing globals
+;
+; RUN: as < %s | opt -ds-opt | dis | grep %G | grep constant
+
+
+%G = internal global int 0             ; <int*> [#uses=2]
+
+implementation   ; Functions:
+
+int %main() {
+       %A = load int* %G
+       ret int %A
+}