It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 0 deletions

diff --git a/test/Transforms/DeadStoreElimination/context-sensitive.llx b/test/Transforms/DeadStoreElimination/context-sensitive.llx
new file mode 100644
index 0000000..54396d4
--- /dev/null
+++ b/test/Transforms/DeadStoreElimination/context-sensitive.llx
@@ -0,0 +1,15 @@
+; RUN: llvm-upgrade < %s | llvm-as | 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
+}