From: Chris Lattner <sabre@nondot.org>
Date: Tue, 27 Jul 2004 02:19:27 +0000 (+0000)
Subject: New testcase.  DSE should delete all of the DEAD instructions.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cbb4b574c048325155f0138883e6fdff7363a256;p=oota-llvm.git

New testcase.  DSE should delete all of the DEAD instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15253 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/DeadStoreElimination/context-sensitive.llx b/test/Transforms/DeadStoreElimination/context-sensitive.llx
new file mode 100644
index 00000000000..428030c8e24
--- /dev/null
+++ b/test/Transforms/DeadStoreElimination/context-sensitive.llx
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | opt -dse | llvm-dis | not grep DEAD
+
+declare void %ext() 
+
+int* %caller() {
+	%P = malloc int
+	%DEAD = load int* %P
+	%DEAD2 = add int %DEAD, 1
+	store int %DEAD2, int* %P  ;; dead store
+
+	call void %ext()         ; Can not clobber *P
+
+	store int 0, int* %P
+	ret int* %P
+}