• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1; Test general-dynamic TLS access optimizations.
2;
3; If we access two different TLS variables, we need two calls to
4; __tls_get_offset, but should load _GLOBAL_OFFSET_TABLE only once.
5;
6; RUN: llc < %s -mcpu=z10 -mtriple=s390x-linux-gnu -relocation-model=pic | grep "__tls_get_offset" | count 2
7; RUN: llc < %s -mcpu=z10 -mtriple=s390x-linux-gnu -relocation-model=pic | grep "_GLOBAL_OFFSET_TABLE_" | count 1
8
9@x = thread_local global i32 0
10@y = thread_local global i32 0
11
12define i32 @foo() {
13  %valx = load i32, i32* @x
14  %valy = load i32, i32* @y
15  %add = add nsw i32 %valx, %valy
16  ret i32 %add
17}
18