Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.
Will be re-reverting again.
llvm-svn: 358552
diff --git a/llvm/test/Transforms/MemCpyOpt/capturing-func.ll b/llvm/test/Transforms/MemCpyOpt/capturing-func.ll
new file mode 100644
index 0000000..2671a9a
--- /dev/null
+++ b/llvm/test/Transforms/MemCpyOpt/capturing-func.ll
@@ -0,0 +1,22 @@
+; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
+
+target datalayout = "e"
+
+declare void @foo(i8*)
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind
+
+define void @test() {
+ %ptr1 = alloca i8
+ %ptr2 = alloca i8
+ call void @foo(i8* %ptr2)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr1, i8* %ptr2, i32 1, i1 false)
+ call void @foo(i8* %ptr1)
+ ret void
+
+ ; Check that the transformation isn't applied if the called function can
+ ; capture the pointer argument (i.e. the nocapture attribute isn't present)
+ ; CHECK-LABEL: @test(
+ ; CHECK: call void @foo(i8* %ptr2)
+ ; CHECK-NEXT: call void @llvm.memcpy
+ ; CHECK-NEXT: call void @foo(i8* %ptr1)
+}