clang/test/CodeGen/arm-asm-warn.c

   1 // REQUIRES: arm-registered-target
   2 // RUN: %clang_cc1 -triple armv7 -target-feature +neon %s -emit-llvm -o /dev/null
   3
   4 char bar();
   5
   6 void t1(int x, char y) {
   7   __asm__ volatile("mcr p15, 0, %1, c9, c12, 5;"
   8                    "mrc p15, 0, %0, c9, c13, 2;"
   9                    : "=r" (x)
  10                    : "r" (bar())); // no warning
  11   __asm__ volatile("foo %0, %1"
  12                    : "+r" (x),
  13                      "+r" (y)
  14                    :);
  15   __asm__ volatile("ldrb %0, [%1]" : "=r" (y) : "r" (x)); // no warning
  16 }
  17
  18 // <rdar://problem/12284092>
  19 typedef __attribute__((neon_vector_type(2))) long long int64x2_t;
  20 typedef struct int64x2x4_t {
  21   int64x2_t val[4];
  22 } int64x2x4_t;
  23 int64x2x4_t t2(const long long a[]) {
  24   int64x2x4_t r;
  25   __asm__("vldm %[a], { %q[r0], %q[r1], %q[r2], %q[r3] }"
  26           : [r0] "=r"(r.val[0]), // expected-warning {{value size does not match register size specified by the constraint and modifier}}
  27             [r1] "=r"(r.val[1]), // expected-warning {{value size does not match register size specified by the constraint and modifier}}
  28             [r2] "=r"(r.val[2]), // expected-warning {{value size does not match register size specified by the constraint and modifier}}
  29             [r3] "=r"(r.val[3])  // expected-warning {{value size does not match register size specified by the constraint and modifier}}
  30           : [a] "r"(a));
  31   return r;
  32 }