clang/test/CodeGenCXX/alloca-align.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   2
   3 struct s0 {
   4   int Start, End;
   5   unsigned Alignment;
   6   int TheStores __attribute__((aligned(16)));
   7 };
   8
   9 // CHECK-LABEL: define{{.*}} void @f0
  10 // CHECK: alloca %struct.s0, align 16
  11 extern "C" void f0() {
  12   (void) s0();
  13 }
  14
  15 // CHECK-LABEL: define{{.*}} void @f1
  16 // CHECK: alloca %struct.s0, align 16
  17 extern "C" void f1() {
  18   (void) (struct s0) { 0, 0, 0, 0 };
  19 }
  20
  21 // CHECK-LABEL: define{{.*}} i32 @f2
  22 // CHECK: alloca %struct.s1, align 2
  23 struct s1 { short x; short y; };
  24 extern "C" struct s1 f2(int a, struct s1 *x, struct s1 *y) {
  25   if (a)
  26     return *x;
  27   return *y;
  28 }