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Thread-local variables with DECL_COMMON trigger an internal compiler error on targets that use emulated TLS without register_common, when we attempt to expand a call to the NULL register_common, with testcases as simple as gcc.dg/tls/emutls-2.c. The documentation states that, on such targets, common variables would fall back to explicitly initialized. This patch rearranges the code that deals with initialization of common and non-common variables, complementing code that is already in place to detect register_common-less targets. for gcc/ChangeLog * tree-emutls.c (new_emutls_decl, emutls_common_1): Complete handling of register_common-less targets. for gcc/testsuite/ChangeLog * gcc.dg/tls/emutls-3.c: New, combining emutls-2.c and thr-init-2.c into an execution test with explicitly common variables.
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