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