diff options
Diffstat (limited to 'test/CodeGenCXX/no-opt-volatile-memcpy.cpp')
| -rw-r--r-- | test/CodeGenCXX/no-opt-volatile-memcpy.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGenCXX/no-opt-volatile-memcpy.cpp b/test/CodeGenCXX/no-opt-volatile-memcpy.cpp new file mode 100644 index 0000000000..a0008a7704 --- /dev/null +++ b/test/CodeGenCXX/no-opt-volatile-memcpy.cpp @@ -0,0 +1,44 @@ +// RUN: %clang_cc1 -O -triple=x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s +// rdar://11861085 + +struct s { + char filler [128]; + volatile int x; +}; + +struct s gs; + +void foo (void) { + struct s ls; + ls = ls; + gs = gs; + ls = gs; +} +// CHECK: call void @llvm.memcpy +// CHECK: call void @llvm.memcpy +// CHECK: call void @llvm.memcpy + +struct s1 { + struct s y; +}; + +struct s1 s; + +void fee (void) { + s = s; + s.y = gs; +} +// CHECK: call void @llvm.memcpy +// CHECK: call void @llvm.memcpy + + +struct d : s1 { +}; + +d gd; + +void gorf(void) { + gd = gd; +} +// CHECK: call void @llvm.memcpy + |