clang/test/CodeGen/dynamic-alloca-with-address-space.c

   1 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -emit-llvm %s -o - \
   2 // RUN:   | FileCheck %s --check-prefix=CHECK
   3 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -DOCL12 -x cl -std=cl1.2 \
   4 // RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-CL12
   5 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -x cl -std=cl2.0 \
   6 // RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-CL20
   7
   8 #if defined(OCL12)
   9     #define CAST (char *)(unsigned long)
  10 #else
  11     #define CAST (char *)
  12 #endif
  13
  14 void allocas(unsigned long n) {
  15     char *a = CAST __builtin_alloca(n);
  16     char *uninitialized_a = CAST __builtin_alloca_uninitialized(n);
  17     char *aligned_a = CAST __builtin_alloca_with_align(n, 8);
  18     char *aligned_uninitialized_a = CAST __builtin_alloca_with_align_uninitialized(n, 8);
  19 }
  20
  21 // CHECK: @allocas(
  22 // CHECK: store i64 %n, ptr %n.addr.ascast, align 8
  23 // CHECK: %0 = load i64, ptr %n.addr.ascast, align 8
  24 // CHECK: %1 = alloca i8, i64 %0, align 8, addrspace(5)
  25 // CHECK: %2 = addrspacecast ptr addrspace(5) %1 to ptr
  26 // CHECK: store ptr %2, ptr %a.ascast, align 8
  27 // CHECK: %3 = load i64, ptr %n.addr.ascast, align 8
  28 // CHECK: %4 = alloca i8, i64 %3, align 8, addrspace(5)
  29 // CHECK: %5 = addrspacecast ptr addrspace(5) %4 to ptr
  30 // CHECK: store ptr %5, ptr %uninitialized_a.ascast, align 8
  31 // CHECK: %6 = load i64, ptr %n.addr.ascast, align 8
  32 // CHECK: %7 = alloca i8, i64 %6, align 1, addrspace(5)
  33 // CHECK: %8 = addrspacecast ptr addrspace(5) %7 to ptr
  34 // CHECK: store ptr %8, ptr %aligned_a.ascast, align 8
  35 // CHECK: %9 = load i64, ptr %n.addr.ascast, align 8
  36 // CHECK: %10 = alloca i8, i64 %9, align 1, addrspace(5)
  37 // CHECK: %11 = addrspacecast ptr addrspace(5) %10 to ptr
  38 // CHECK: store ptr %11, ptr %aligned_uninitialized_a.ascast, align 8
  39 // CHECK: ret void
  40 // CHECK-CL12-NOT: addrspacecast
  41 // CHECK-CL20-NOT: addrspacecast