[cfe-commits] r151533 - /cfe/trunk/test/CodeGen/lifetime.c

[Chad Rosier]

Author: mcrosier
Date: Mon Feb 27 12:45:03 2012
New Revision: 151533

URL: http://llvm.org/viewvc/llvm-project?rev=151533&view=rev
Log:
Test case for r151429/r151430, which ensures llvm.lifetime intrinsics are not
being emitted at -O0, but are emitted when optimizations are enabled.


Added:
    cfe/trunk/test/CodeGen/lifetime.c

Added: cfe/trunk/test/CodeGen/lifetime.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/lifetime.c?rev=151533&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/lifetime.c (added)
+++ cfe/trunk/test/CodeGen/lifetime.c Mon Feb 27 12:45:03 2012
@@ -0,0 +1,23 @@
+// RUN: %clang -S -emit-llvm -o - -O0 %s | FileCheck %s -check-prefix=O0
+// RUN: %clang -S -emit-llvm -o - -O1 %s | FileCheck %s -check-prefix=O1
+// RUN: %clang -S -emit-llvm -o - -O2 %s | FileCheck %s -check-prefix=O2
+// RUN: %clang -S -emit-llvm -o - -O3 %s | FileCheck %s -check-prefix=O3
+
+extern void use(char *a);
+
+__attribute__((always_inline)) void helper_no_markers() {
+  char a;
+  use(&a);
+}
+
+void lifetime_test() {
+// O0: lifetime_test
+// O1: lifetime_test
+// O2: lifetime_test
+// O3: lifetime_test
+// O0-NOT: @llvm.lifetime.start
+// O1: @llvm.lifetime.start
+// O2: @llvm.lifetime.start
+// O3: @llvm.lifetime.start
+  helper_no_markers();
+}