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| author | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2013-08-30 11:13:20 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2013-08-30 11:13:20 +0000 |
| commit | f7e088e7de99b6ab31dc56d2a3ed358647207256 (patch) | |
| tree | 28d46552357ed039d57e797a50db601708d5d55e /gcc/function.c | |
| parent | bec9ec3fc1f24d55a37a6c90ac03dc60f87d4d72 (diff) | |
| download | gcc-f7e088e7de99b6ab31dc56d2a3ed358647207256.zip gcc-f7e088e7de99b6ab31dc56d2a3ed358647207256.tar.gz gcc-f7e088e7de99b6ab31dc56d2a3ed358647207256.tar.bz2 | |
function.c (assign_parm_setup_reg): For a parameter passed by pointer and which can live in a register...
* function.c (assign_parm_setup_reg): For a parameter passed by pointer
and which can live in a register, always retrieve the value on entry.
* var-tracking.c (add_stores): Treat the copy on entry for a parameter
passed by invisible reference specially.
(emit_notes_in_bb) <MO_VAL_USE>: Emit notes before the instruction.
(vt_add_function_parameter): Correctly deal with a parameter passed by
invisible reference.
From-SVN: r202102
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/gcc/function.c b/gcc/function.c index c1550a2..08731e84 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -3101,17 +3101,27 @@ assign_parm_setup_reg (struct assign_parm_data_all *all, tree parm, emit_move_insn (parmreg, validated_mem); /* If we were passed a pointer but the actual value can safely live - in a register, put it in one. */ - if (data->passed_pointer - && TYPE_MODE (TREE_TYPE (parm)) != BLKmode - /* If by-reference argument was promoted, demote it. */ - && (TYPE_MODE (TREE_TYPE (parm)) != GET_MODE (DECL_RTL (parm)) - || use_register_for_decl (parm))) + in a register, retrieve it and use it directly. */ + if (data->passed_pointer && TYPE_MODE (TREE_TYPE (parm)) != BLKmode) { /* We can't use nominal_mode, because it will have been set to Pmode above. We must use the actual mode of the parm. */ - parmreg = gen_reg_rtx (TYPE_MODE (TREE_TYPE (parm))); - mark_user_reg (parmreg); + if (use_register_for_decl (parm)) + { + parmreg = gen_reg_rtx (TYPE_MODE (TREE_TYPE (parm))); + mark_user_reg (parmreg); + } + else + { + int align = STACK_SLOT_ALIGNMENT (TREE_TYPE (parm), + TYPE_MODE (TREE_TYPE (parm)), + TYPE_ALIGN (TREE_TYPE (parm))); + parmreg + = assign_stack_local (TYPE_MODE (TREE_TYPE (parm)), + GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (parm))), + align); + set_mem_attributes (parmreg, parm, 1); + } if (GET_MODE (parmreg) != GET_MODE (DECL_RTL (parm))) { |