New testcase that functions with dynamic allocas can be inlined, and are

inlined correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25287 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/Inline/dynamic_alloca_test.ll b/test/Transforms/Inline/dynamic_alloca_test.ll
new file mode 100644 (file)
index 0000000..27c7d71
--- /dev/null
+++ b/test/Transforms/Inline/dynamic_alloca_test.ll
@@ -0,0 +1,28 @@
+; Test that functions with dynamic allocas get inlined in a case where
+; naively inlining it would result in a miscompilation.
+
+; RUN: llvm-as < %s | opt -inline &&
+; RUN: llvm-as < %s | opt -inline | llvm-dis | grep llvm.stacksave &&
+; RUN: llvm-as < %s | opt -inline | llvm-dis | not grep callee
+
+declare void %ext(int*)
+implementation
+
+internal void %callee(uint %N) {
+       %P = alloca int, uint %N     ;; dynamic alloca
+       call void %ext(int* %P)
+       ret void
+}
+
+void %foo(uint %N) {
+       br label %Loop
+Loop:
+       %count = phi uint [0, %0], [%next, %Loop]
+       %next = add uint %count, 1
+       call void %callee(uint %N)
+       %cond = seteq uint %count, 100000
+       br bool %cond, label %out, label %Loop
+out:
+       ret void
+}
+