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Diffstat (limited to 'test/CodeGen/SystemZ/tls-06.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/tls-06.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/tls-06.ll b/test/CodeGen/SystemZ/tls-06.ll new file mode 100644 index 0000000..fcd8614 --- /dev/null +++ b/test/CodeGen/SystemZ/tls-06.ll @@ -0,0 +1,17 @@ +; Test general-dynamic TLS access optimizations. +; +; If we access two different TLS variables, we need two calls to +; __tls_get_offset, but should load _GLOBAL_OFFSET_TABLE only once. +; +; RUN: llc < %s -mcpu=z10 -mtriple=s390x-linux-gnu -relocation-model=pic | grep "__tls_get_offset" | count 2 +; RUN: llc < %s -mcpu=z10 -mtriple=s390x-linux-gnu -relocation-model=pic | grep "_GLOBAL_OFFSET_TABLE_" | count 1 + +@x = thread_local global i32 0 +@y = thread_local global i32 0 + +define i32 @foo() { + %valx = load i32* @x + %valy = load i32* @y + %add = add nsw i32 %valx, %valy + ret i32 %add +} |