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46 lines
1.6 KiB
C

// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -O2 -Wno-missing-declarations -emit-llvm -o - %s | FileCheck %s
struct foo {
int x,y,z;
struct bar {
int count;
int array[] __attribute__((counted_by(count)));
};
};
void init(void * __attribute__((pass_dynamic_object_size(0))));
// CHECK-LABEL: define dso_local void @test1(
// CHECK-SAME: ptr noundef [[P:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 4
// CHECK-NEXT: [[COUNTED_BY_LOAD:%.*]] = load i32, ptr [[P]], align 4
// CHECK-NEXT: [[COUNT:%.*]] = sext i32 [[COUNTED_BY_LOAD]] to i64
// CHECK-NEXT: [[FLEXIBLE_ARRAY_MEMBER_SIZE:%.*]] = shl nsw i64 [[COUNT]], 2
// CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[COUNTED_BY_LOAD]], -1
// CHECK-NEXT: [[TMP1:%.*]] = select i1 [[TMP0]], i64 [[FLEXIBLE_ARRAY_MEMBER_SIZE]], i64 0
// CHECK-NEXT: tail call void @init(ptr noundef nonnull [[ARRAY]], i64 noundef [[TMP1]]) #[[ATTR2:[0-9]+]]
// CHECK-NEXT: ret void
//
void test1(struct bar *p) {
init(p->array);
}
struct mux {
int count;
int array[] __attribute__((counted_by(count)));
};
struct bux { struct mux x; };
// CHECK-LABEL: define dso_local void @test2(
// CHECK-SAME: ptr noundef [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: tail call void @init(ptr noundef [[P]], i64 noundef -1) #[[ATTR2]]
// CHECK-NEXT: ret void
//
void test2(struct bux *p) {
init(p);
}