diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/function.c b/gcc/function.c index 85e2f05..6c9bea8 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -4453,13 +4453,21 @@ expand_function_start (tree subr) if (cfun->static_chain_decl) { tree parm = cfun->static_chain_decl; - rtx local = gen_reg_rtx (Pmode); + rtx local, chain, insn; - set_decl_incoming_rtl (parm, static_chain_incoming_rtx, false); + local = gen_reg_rtx (Pmode); + chain = targetm.calls.static_chain (current_function_decl, true); + + set_decl_incoming_rtl (parm, chain, false); SET_DECL_RTL (parm, local); mark_reg_pointer (local, TYPE_ALIGN (TREE_TYPE (TREE_TYPE (parm)))); - emit_move_insn (local, static_chain_incoming_rtx); + insn = emit_move_insn (local, chain); + + /* Mark the register as eliminable, similar to parameters. */ + if (MEM_P (chain) + && reg_mentioned_p (arg_pointer_rtx, XEXP (chain, 0))) + set_unique_reg_note (insn, REG_EQUIV, chain); } /* If the function receives a non-local goto, then store the |