| James Y Knight | 7160857 | 2015-08-21 18:19:06 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple sparc-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
| 2 | |
| 3 | // Ensure that we pass proper alignment to llvm in the call |
| 4 | // instruction. The proper alignment for the type is sometimes known |
| 5 | // only by clang, and is not manifest in the LLVM-type. So, it must be |
| 6 | // explicitly passed through. (Besides the case of the user specifying |
| 7 | // alignment, as here, this situation also occurrs for non-POD C++ |
| 8 | // structs with tail-padding: clang emits these as packed llvm-structs |
| 9 | // for ABI reasons.) |
| 10 | |
| 11 | struct s1 { |
| 12 | int x; |
| 13 | } __attribute__((aligned(8))); |
| 14 | |
| 15 | struct s1 x1; |
| 16 | |
| 17 | |
| 18 | // Ensure the align 8 is passed through: |
| 19 | // CHECK-LABEL: define void @f1() |
| 20 | // CHECK: call void @f1_helper(%struct.s1* byval align 8 @x1) |
| 21 | // Also ensure the declaration of f1_helper includes it |
| 22 | // CHECK: declare void @f1_helper(%struct.s1* byval align 8) |
| 23 | |
| 24 | void f1_helper(struct s1); |
| 25 | void f1() { |
| 26 | f1_helper(x1); |
| 27 | } |