clang/test/CodeGen/struct-union-BE.c

   1 // RUN: %clang_cc1 -triple mips-linux-gnu  -emit-llvm %s -o - | FileCheck %s -check-prefix=MIPS
   2 // RUN: %clang_cc1 -triple mips64-linux-gnu  -emit-llvm %s -o - | FileCheck %s -check-prefix=MIPS64
   3 // RUN: %clang_cc1 -triple armebv7-linux-gnueabihf -emit-llvm %s -o - | FileCheck %s -check-prefix=ARM
   4
   5 #include <stdarg.h>
   6
   7 extern void abort(void) __attribute__((noreturn));
   8
   9 struct tiny {
  10   char c;
  11 };
  12
  13 union data {
  14   char c;
  15 };
  16
  17 void fstr(int n, ...) {
  18   struct tiny x;
  19   va_list ap;
  20   va_start (ap,n);
  21   x = va_arg (ap, struct tiny);
  22   if (x.c !=  10)
  23     abort();
  24   va_end (ap);
  25 // MIPS-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i32 3
  26 // MIPS64-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i64 7
  27 // ARM-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i32 3
  28 }
  29
  30 void funi(int n, ...) {
  31   union data x;
  32   va_list ap;
  33   va_start (ap,n);
  34   x = va_arg (ap, union data);
  35   if (x.c !=  10)
  36     abort();
  37   va_end (ap);
  38 // MIPS-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i32 3
  39 // MIPS64-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i64 7
  40 // ARM-NOT: %{{[0-9]+}} = getelementptr inbounds i8, ptr %argp.cur, i32 3
  41 }
  42
  43 void foo(void) {
  44   struct tiny x[3];
  45   union data y;
  46   x[0].c = 10;
  47   fstr(1, x[0]);
  48   funi(1, y);
  49 }