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| author | Richard Stallman <rms@gnu.org> | 1992-05-15 05:23:58 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-05-15 05:23:58 +0000 |
| commit | e16c591a119cfadadb854ee51dffc724d9ee97f8 (patch) | |
| tree | 2cd9a2ba7bb7a66cefc41a9b5d7e29eea069a2cc | |
| parent | 611314a17ddd1e3f619e44ab9a745751fdafb2a9 (diff) | |
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*** empty log message ***
From-SVN: r985
| -rw-r--r-- | gcc/function.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index 602544f..c2fc5e8 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2710,6 +2710,21 @@ assign_parms (fndecl, second_time) if (second_time) continue; + /* If we can't trust the parm stack slot to be aligned enough + for its ultimate type, don't use that slot after entry. + We'll make another stack slot, if we need one. */ + { +#ifdef FUNCTION_ARG_BOUNDARY + int thisparm_boundary + = FUNCTION_ARG_BOUNDARY (passed_mode, passed_type); +#else + int thisparm_boundary = PARM_BOUNDARY; +#endif + + if (GET_MODE_ALIGNMENT (nominal_mode) > thisparm_boundary) + stack_parm = 0; + } + /* Now adjust STACK_PARM to the mode and precise location where this parameter should live during execution, if we discover that it must live in the stack during execution. @@ -2856,6 +2871,7 @@ assign_parms (fndecl, second_time) as we make here would screw up life analysis for it. */ if (nominal_mode == passed_mode && GET_CODE (entry_parm) == MEM + && entry_parm == stack_parm && stack_offset.var == 0 && reg_mentioned_p (virtual_incoming_args_rtx, XEXP (entry_parm, 0))) @@ -3088,6 +3104,9 @@ locate_and_pad_parm (passed_mode, type, in_regs, fndecl, #endif /* ARGS_GROW_DOWNWARD */ } +/* Round the stack offset in *OFFSET_PTR up to a multiple of BOUNDARY. + BOUNDARY is measured in bits, but must be a multiple of a storage unit. */ + static void pad_to_arg_alignment (offset_ptr, boundary) struct args_size *offset_ptr; |