1 // RUN: %clang_cc1 -triple arm64-none-linux-gnu -emit-llvm -o - %s | FileCheck %s
2
3 // The only part clang really deals with is the lvalue/rvalue
4 // distinction on constraints. It's sufficient to emit llvm and make
5 // sure that's sane.
6
7 long var;
8
test_generic_constraints(int var32,long var64)9 void test_generic_constraints(int var32, long var64) {
10 asm("add %0, %1, %1" : "=r"(var32) : "0"(var32));
11 // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32, i32*
12 // CHECK: call i32 asm "add $0, $1, $1", "=r,0"(i32 [[R32_ARG]])
13
14 asm("add %0, %1, %1" : "=r"(var64) : "0"(var64));
15 // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i64, i64*
16 // CHECK: call i64 asm "add $0, $1, $1", "=r,0"(i64 [[R32_ARG]])
17
18 asm("ldr %0, %1" : "=r"(var32) : "m"(var));
19 asm("ldr %0, [%1]" : "=r"(var64) : "r"(&var));
20 // CHECK: call i32 asm "ldr $0, $1", "=r,*m"(i64* @var)
21 // CHECK: call i64 asm "ldr $0, [$1]", "=r,r"(i64* @var)
22 }
23
24 float f;
25 double d;
test_constraint_w()26 void test_constraint_w() {
27 asm("fadd %s0, %s1, %s1" : "=w"(f) : "w"(f));
28 // CHECK: [[FLT_ARG:%[a-zA-Z_0-9]+]] = load float, float* @f
29 // CHECK: call float asm "fadd ${0:s}, ${1:s}, ${1:s}", "=w,w"(float [[FLT_ARG]])
30
31 asm("fadd %d0, %d1, %d1" : "=w"(d) : "w"(d));
32 // CHECK: [[DBL_ARG:%[a-zA-Z_0-9]+]] = load double, double* @d
33 // CHECK: call double asm "fadd ${0:d}, ${1:d}, ${1:d}", "=w,w"(double [[DBL_ARG]])
34 }
35
test_constraints_immed(void)36 void test_constraints_immed(void) {
37 asm("add x0, x0, %0" : : "I"(4095) : "x0");
38 asm("and w0, w0, %0" : : "K"(0xaaaaaaaa) : "w0");
39 asm("and x0, x0, %0" : : "L"(0xaaaaaaaaaaaaaaaa) : "x0");
40 // CHECK: call void asm sideeffect "add x0, x0, $0", "I,~{x0}"(i32 4095)
41 // CHECK: call void asm sideeffect "and w0, w0, $0", "K,~{w0}"(i32 -1431655766)
42 // CHECK: call void asm sideeffect "and x0, x0, $0", "L,~{x0}"(i64 -6148914691236517206)
43 }
44
test_constraint_S(void)45 void test_constraint_S(void) {
46 int *addr;
47 asm("adrp %0, %A1\n\t"
48 "add %0, %0, %L1" : "=r"(addr) : "S"(&var));
49 // CHECK: call i32* asm "adrp $0, ${1:A}\0A\09add $0, $0, ${1:L}", "=r,S"(i64* @var)
50 }
51
test_constraint_Q(void)52 void test_constraint_Q(void) {
53 int val;
54 asm("ldxr %0, %1" : "=r"(val) : "Q"(var));
55 // CHECK: call i32 asm "ldxr $0, $1", "=r,*Q"(i64* @var)
56 }
57