1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// RUN: %clang_cc1 -triple armebv7-arm-none-eabi -emit-llvm -w -o - %s | FileCheck %s
// this tests for AAPCS section 5.4:
// A Composite Type not larger than 4 bytes is returned in r0.
// The format is as if the result had been stored in memory at a
// word-aligned address and then loaded into r0 with an LDR instruction
extern union Us { short s; } us;
union Us callee_us() { return us; }
// CHECK-LABEL: callee_us()
// CHECK: zext i16
// CHECK: shl
// CHECK: ret i32
void caller_us() {
us = callee_us();
// CHECK-LABEL: caller_us()
// CHECK: call i32
// CHECK: lshr i32
// CHECK: trunc i32
}
extern struct Ss { short s; } ss;
struct Ss callee_ss() { return ss; }
// CHECK-LABEL: callee_ss()
// CHECK: zext i16
// CHECK: shl
// CHECK: ret i32
void caller_ss() {
ss = callee_ss();
// CHECK-LABEL: caller_ss()
// CHECK: call i32
// CHECK: lshr i32
// CHECK: trunc i32
}
|
