llvm-project/clang/test/CodeGen/pr4349.c

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// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
// PR 4349
union reg
{
unsigned char b[2][2];
unsigned short w[2];
unsigned int d;
};
struct cpu
{
union reg pc;
};
extern struct cpu cpu;
struct svar
{
void *ptr;
};
// CHECK: @svars1 = global [1 x %struct.svar] [%struct.svar { i8* bitcast (%struct.cpu* @cpu to i8*) }]
struct svar svars1[] =
{
{ &((cpu.pc).w[0]) }
};
// CHECK: @svars2 = global [1 x %struct.svar] [%struct.svar { i8* getelementptr (i8* bitcast (%struct.cpu* @cpu to i8*), i64 1) }]
struct svar svars2[] =
{
{ &((cpu.pc).b[0][1]) }
};
// CHECK: @svars3 = global [1 x %struct.svar] [%struct.svar { i8* getelementptr (i8* bitcast (%struct.cpu* @cpu to i8*), i64 2) }]
struct svar svars3[] =
{
{ &((cpu.pc).w[1]) }
};
// CHECK: @svars4 = global [1 x %struct.svar] [%struct.svar { i8* getelementptr (i8* bitcast (%struct.cpu* @cpu to i8*), i64 3) }]
struct svar svars4[] =
{
{ &((cpu.pc).b[1][1]) }
};