llvm-project/clang/test/CodeGen/blocks-aligned-byref-variable.c

// RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-apple-darwin10
// RUN: %clang_cc1 -emit-llvm -o - -triple i386-apple-darwin10 
typedef int __attribute__((aligned(32)))  ai;

void f() {
  __block ai a = 10;

  ^{
    a = 20;
  }();
}

void g() {
  __block double a = 10;

  ^{
    a = 20;
  }();
}