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      1 // RUN: %clang_cc1 -triple aarch64-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 
      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*
     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*
     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;
     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* @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* @d
     33 // CHECK: call double asm "fadd ${0:d}, ${1:d}, ${1:d}", "=w,w"(double [[DBL_ARG]])
     34 }
     35 
     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 
     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 
     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