File: global-var-linkage.cpp

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.6-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,245,028 kB
  • sloc: cpp: 7,619,726; ansic: 1,434,018; asm: 1,058,748; python: 252,740; f90: 94,671; objc: 70,685; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,675; awk: 3,523; javascript: 2,409; xml: 892; fortran: 770
file content (33 lines) | stat: -rw-r--r-- 1,188 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
// Linkage types of global variables
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
// RUN: FileCheck %s -check-prefix=CIR --input-file %t.cir
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
// RUN: FileCheck %s -check-prefix=LLVM --input-file %t-cir.ll
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
// RUN: FileCheck %s -check-prefix=OGCG --input-file %t.ll

int aaaa;
// CIR: cir.global external @aaaa
// LLVM: @aaaa = global i32 0
// OGCG: @aaaa = global i32 0

[[gnu::selectany]] int dddd;
// CIR: cir.global weak_odr comdat @dddd
// LLVM: @dddd = weak_odr global i32 0, comdat
// OGCG: @dddd = weak_odr global i32 0, comdat

static int bbbb;
// CIR: cir.global "private" internal dso_local @_ZL4bbbb
// LLVM: @_ZL4bbbb = internal global i32 0
// OGCG: @_ZL4bbbb = internal global i32 0

inline int cccc;
// CIR: cir.global linkonce_odr comdat @cccc
// LLVM: @cccc = linkonce_odr global i32 0, comdat
// OGCG: @cccc = linkonce_odr global i32 0, comdat

// Force the global variables to be emitted
void reference_vars() {
    bbbb;
    cccc;
}