forked from OSchip/llvm-project
88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
|
|
|
|
int b(char* x);
|
|
|
|
// Extremely basic VLA test
|
|
void a(int x) {
|
|
char arry[x];
|
|
arry[0] = 10;
|
|
b(arry);
|
|
}
|
|
|
|
int c(int n)
|
|
{
|
|
return sizeof(int[n]);
|
|
}
|
|
|
|
int f0(int x) {
|
|
int vla[x];
|
|
return vla[x-1];
|
|
}
|
|
|
|
void
|
|
f(int count)
|
|
{
|
|
int a[count];
|
|
|
|
do { } while (0);
|
|
|
|
if (a[0] != 3) {
|
|
}
|
|
}
|
|
|
|
void g(int count) {
|
|
// Make sure we emit sizes correctly in some obscure cases
|
|
int (*a[5])[count];
|
|
int (*b)[][count];
|
|
}
|
|
|
|
// rdar://8403108
|
|
// CHECK: define void @f_8403108
|
|
void f_8403108(unsigned x) {
|
|
// CHECK: call i8* @llvm.stacksave()
|
|
char s1[x];
|
|
while (1) {
|
|
// CHECK: call i8* @llvm.stacksave()
|
|
char s2[x];
|
|
if (1)
|
|
break;
|
|
// CHECK: call void @llvm.stackrestore(i8*
|
|
}
|
|
// CHECK: call void @llvm.stackrestore(i8*
|
|
}
|
|
|
|
// pr7827
|
|
void function(short width, int data[][width]) {} // expected-note {{passing argument to parameter 'data' here}}
|
|
|
|
void test() {
|
|
int bork[4][13];
|
|
// CHECK: call void @function(i16 signext 1, i32* null)
|
|
function(1, 0);
|
|
// CHECK: call void @function(i16 signext 1, i32* inttoptr
|
|
function(1, 0xbadbeef); // expected-warning {{incompatible integer to pointer conversion passing}}
|
|
// CHECK: call void @function(i16 signext 1, i32* {{.*}})
|
|
function(1, bork);
|
|
}
|
|
|
|
void function1(short width, int data[][width][width]) {}
|
|
void test1() {
|
|
int bork[4][13][15];
|
|
// CHECK: call void @function1(i16 signext 1, i32* {{.*}})
|
|
function1(1, bork);
|
|
// CHECK: call void @function(i16 signext 1, i32* {{.*}})
|
|
function(1, bork[2]);
|
|
}
|
|
|
|
// rdar://8476159
|
|
static int GLOB;
|
|
int test2(int n)
|
|
{
|
|
GLOB = 0;
|
|
char b[1][n+3]; /* Variable length array. */
|
|
// CHECK: [[tmp_1:%.*]] = load i32* @GLOB, align 4
|
|
// CHECK-NEXT: add nsw i32 [[tmp_1]], 1
|
|
__typeof__(b[GLOB++]) c;
|
|
return GLOB;
|
|
}
|
|
|