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(assign_parms): If STACK_REGS is defined...

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(assign_parms): If STACK_REGS is defined, generate USE insns before
the function body, thus showing which registers are filled with
parameters.

From-SVN: r9461
This commit is contained in:
Richard Kenner 1995-04-25 19:08:04 -04:00
parent 7d41fad55b
commit 9dc0f53144
1 changed files with 11 additions and 0 deletions
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11
gcc/function.c
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@ -3497,6 +3497,17 @@ assign_parms (fndecl, second_time)
}
#endif /* 0 */
#ifdef STACK_REGS
/* We need this "use" info, because the gcc-register->stack-register
converter in reg-stack.c needs to know which registers are active
at the start of the function call. The actual parameter loading
instructions are not always available then anymore, since they might
have been optimised away. */
if (GET_CODE (entry_parm) == REG && !(hide_last_arg && last_named))
emit_insn (gen_rtx (USE, GET_MODE (entry_parm), entry_parm));
#endif
/* ENTRY_PARM is an RTX for the parameter as it arrives,
in the mode in which it arrives.
STACK_PARM is an RTX for a stack slot where the parameter can live