Vendor import of clang trunk r256633:

https://llvm.org/svn/llvm-project/cfe/trunk@256633

1 files changed, 27 insertions, 0 deletions

diff --git a/test/CodeGen/sparc-arguments.c b/test/CodeGen/sparc-arguments.c
new file mode 100644
index 0000000..c86b40b
--- /dev/null
+++ b/test/CodeGen/sparc-arguments.c
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -triple sparc-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// Ensure that we pass proper alignment to llvm in the call
+// instruction. The proper alignment for the type is sometimes known
+// only by clang, and is not manifest in the LLVM-type. So, it must be
+// explicitly passed through. (Besides the case of the user specifying
+// alignment, as here, this situation also occurrs for non-POD C++
+// structs with tail-padding: clang emits these as packed llvm-structs
+// for ABI reasons.)
+
+struct s1 {
+  int x;
+} __attribute__((aligned(8)));
+
+struct s1 x1;
+
+
+// Ensure the align 8 is passed through:
+// CHECK-LABEL: define void @f1()
+// CHECK: call void @f1_helper(%struct.s1* byval align 8 @x1)
+// Also ensure the declaration of f1_helper includes it
+// CHECK: declare void @f1_helper(%struct.s1* byval align 8)
+
+void f1_helper(struct s1);
+void f1() {
+  f1_helper(x1);
+}