clang/test/CodeGenCXX/template-param-objects-address-space.cpp

   1 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -std=c++20 %s -emit-llvm -o - | FileCheck %s
   2
   3 struct S { char buf[32]; };
   4 template<S s> constexpr const char *begin() { return s.buf; }
   5 template<S s> constexpr const char *end() { return s.buf + __builtin_strlen(s.buf); }
   6 template<S s> constexpr const void *retval() { return &s; }
   7 extern const void *callee(const S*);
   8 template<S s> constexpr const void* observable_addr() { return callee(&s); }
   9
  10 // CHECK: [[HELLO:@_ZTAXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEE]]
  11 // CHECK-SAME: = linkonce_odr addrspace(1) constant { <{ [11 x i8], [21 x i8] }> } { <{ [11 x i8], [21 x i8] }> <{ [11 x i8] c"hello world", [21 x i8] zeroinitializer }> }, comdat
  12
  13 // CHECK: @p
  14 // CHECK-SAME: addrspace(1) global ptr addrspacecast (ptr addrspace(1) [[HELLO]] to ptr)
  15 const char *p = begin<S{"hello world"}>();
  16
  17 // CHECK: @q
  18 // CHECK-SAME: addrspace(1) global ptr addrspacecast (ptr addrspace(1) getelementptr (i8, ptr addrspace(1) [[HELLO]], i64 11) to ptr)
  19 const char *q = end<S{"hello world"}>();
  20
  21 const void *(*r)() = &retval<S{"hello world"}>;
  22
  23 // CHECK: @s
  24 // CHECK-SAME: addrspace(1) global ptr null
  25 const void *s = observable_addr<S{"hello world"}>();
  26
  27 // CHECK: define linkonce_odr noundef ptr @_Z6retvalIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
  28 // CHECK: ret ptr addrspacecast (ptr addrspace(1) [[HELLO]] to ptr)
  29
  30 // CHECK: define linkonce_odr noundef ptr @_Z15observable_addrIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
  31 // CHECK: %call = call noundef ptr @_Z6calleePK1S(ptr noundef addrspacecast (ptr addrspace(1) [[HELLO]] to ptr))
  32 // CHECK: declare noundef ptr @_Z6calleePK1S(ptr noundef)