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PR target/41246 * config/i386/i386.c (ix86_function_regparm): Do not issue an error for nested functions with regparm=3. (ix86_compute_frame_layout): Adjust frame pointer offset for ix86_static_chain_on_stack. (ix86_expand_prologue): Handle ix86_static_chain_on_stack. (ix86_emit_restore_reg_using_pop): Increment ix86_cfa_state->offset, don't reset to UNITS_PER_WORD. (ix86_emit_leave): Adjust ix86_cfa_state. (ix86_expand_epilogue): Handle ix86_static_chain_on_stack. (ix86_static_chain): New. (ix86_trampoline_init): Rename from x86_initialize_trampoline; make static; update for target hook parameters; use ix86_static_chain. (TARGET_STATIC_CHAIN, TARGET_TRAMPOLINE_INIT): New. * config/i386/i386.h (STATIC_CHAIN_REGNUM): Remove. (INITIALIZE_TRAMPOLINE): Remove. (TRAMPOLINE_SIZE): Use 24 for 64-bit. (struct machine_function): Use BOOL_BITFIELD; rearrange bitfields to the end. Add static_chain_on_stack. (ix86_static_chain_on_stack): New. From-SVN: r152018
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