clang/test/CodeGen/array-init.c

   1 // RUN: %clang_cc1 %s -O0 -triple x86_64-unknown-linux-gnu -emit-llvm -o - | FileCheck -check-prefix=CHECK-NO-MERGE-CONSTANTS %s
   2 // RUN: %clang_cc1 %s -O0 -triple x86_64-unknown-linux-gnu -fmerge-all-constants -emit-llvm -o - | FileCheck -check-prefix=CHECK-MERGE-CONSTANTS %s
   3
   4 // CHECK-NO-MERGE-CONSTANTS: @{{.*}}.a1 = private unnamed_addr constant [5 x i32] [i32 0, i32 1, i32 2, i32 0, i32 0]
   5
   6 // CHECK-MERGE-CONSTANTS: @{{.*}}.a1 = internal constant [5 x i32] [i32 0, i32 1, i32 2, i32 0, i32 0]
   7 // CHECK-MERGE-CONSTANTS: @{{.*}}.a2 = internal constant [5 x i32] zeroinitializer
   8 // CHECK-MERGE-CONSTANTS: @{{.*}}.a3 = internal constant [5 x i32] zeroinitializer
   9
  10 void testConstArrayInits(void)
  11 {
  12   const int a1[5] = {0,1,2};
  13   const int a2[5] = {0,0,0};
  14   const int a3[5] = {0};
  15 }
  16
  17 /// https://github.com/llvm/llvm-project/issues/57353
  18 // CHECK: @big_char ={{.*}} global <{ i8, [4294967295 x i8] }> <{ i8 1, [4294967295 x i8] zeroinitializer }>
  19 char big_char[4294967296] = {1};
  20
  21 // CHECK: @big_char2 ={{.*}} global <{ i8, i8, [4294967296 x i8] }> <{ i8 1, i8 2, [4294967296 x i8] zeroinitializer }>
  22 char big_char2[4294967298] = {1, 2};
  23
  24 // CHECK: @big_int ={{.*}} global <{ i32, i32, i32, [2147483647 x i32] }> <{ i32 1, i32 2, i32 3, [2147483645 x i32] zeroinitializer }>
  25 int big_int[0x200000000 >> 2] = {1, 2, 3};