Use function_arg_info for TARGET_MUST_PASS_IN_STACK

The hook is passed the promoted mode instead of the original type mode.

The expr.h reference in the documentation is no longer correct, but
pointing to calls.h or calls.c doesn't help much either.  I just left
this as-is since it's not related to the point of the series.

After previous changes, most places already pass arg.mode and arg.type.
Only i386 and mcore needed to construct a new one out of nothing.
rs6000 needs to construct one slightly earlier than before.

2019-08-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* target.def (must_pass_in_stack): Take a function_arg_info instead
	of a mode and a type.
	* doc/tm.texi: Regenerate.
	* calls.h (must_pass_in_stack_var_size): Take a function_arg_info
	instead of a mode and a type.
	(must_pass_in_stack_var_size_or_pad): Likewise.
	* calls.c (must_pass_in_stack_var_size): Likewise.
	(must_pass_in_stack_var_size_or_pad): Likewise.
	(initialize_argument_information): Update call to
	targetm.calls.must_pass_in_stack.
	(must_pass_va_arg_on_stack): Likewise.
	* function.c (assign_parm_find_entry_rtl): Likewise.
	* targhooks.c (hook_pass_by_reference_must_pass_in_stack): Likewise.
	* config/alpha/alpha.c (alpha_function_arg): Likewise.
	(alpha_function_arg_advance): Likewise.
	* config/cr16/cr16.c (cr16_function_arg): Likewise.
	(cr16_function_arg_advance): Likewise.
	* config/cris/cris.c (cris_pass_by_reference): Likewise.
	(cris_arg_partial_bytes): Likewise.
	* config/iq2000/iq2000.c (iq2000_pass_by_reference): Likewise.
	* config/lm32/lm32.c (lm32_function_arg): Likewise.
	* config/mcore/mcore.c (mcore_num_arg_regs): Likewise.
	(mcore_function_arg, mcore_arg_partial_bytes): Likewise.
	* config/mips/mips.c (mips_pass_by_reference): Likewise.
	* config/mmix/mmix.c (mmix_function_arg_advance): Likewise.
	(mmix_function_arg_1, mmix_pass_by_reference): Likewise.
	* config/sh/sh.c (sh_pass_by_reference): Likewise.
	* config/stormy16/stormy16.c (xstormy16_function_arg): Likewise.
	* config/xtensa/xtensa.c (xtensa_function_arg_advance): Likewise.
	* config/arm/arm.c (arm_must_pass_in_stack): Take a function_arg_info
	instead of a mode and a type.
	* config/fr30/fr30.c (fr30_must_pass_in_stack): Likewise.
	(fr30_num_arg_regs): Likewise.
	(fr30_setup_incoming_varargs): Update calls accordingly.
	(fr30_arg_partial_bytes, fr30_function_arg): Likewise.
	(fr30_function_arg_advance): Likewise.
	* config/frv/frv.c (frv_must_pass_in_stack): Take a function_arg_info
	instead of a mode and a type.
	* config/gcn/gcn.c (num_arg_regs): Likewise.
	(gcn_function_arg, gcn_function_arg_advance): Update calls to
	num_arg_regs and targetm.calls.must_pass_in_stack.
	(gcn_arg_partial_bytes): Likewise.
	* config/i386/i386.c (ix86_must_pass_in_stack): Take a
	function_arg_info instead of a mode and a type.
	(classify_argument): Update call accordingly.
	* config/nds32/nds32.c (nds32_must_pass_in_stack): Take a
	function_arg_info instead of a mode and a type.
	* config/rs6000/rs6000-internal.h (rs6000_must_pass_in_stack):
	Likewise.
	* config/rs6000/rs6000-call.c (rs6000_must_pass_in_stack): Likewise.
	(rs6000_parm_needs_stack): Update call accordingly.
	(setup_incoming_varargs): Likewise.

From-SVN: r274703

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/target.def b/gcc/target.def
index 4f8acfd..b2332d8 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -4630,11 +4630,11 @@ false.",
    Need audit to verify that this is the case.  */
 DEFHOOK
 (must_pass_in_stack,
- "This target hook should return @code{true} if we should not pass @var{type}\n\
+ "This target hook should return @code{true} if we should not pass @var{arg}\n\
 solely in registers.  The file @file{expr.h} defines a\n\
 definition that is usually appropriate, refer to @file{expr.h} for additional\n\
 documentation.",
- bool, (machine_mode mode, const_tree type),
+ bool, (const function_arg_info &arg),
  must_pass_in_stack_var_size_or_pad)
 
 /* Return true if type TYPE, mode MODE, which is passed by reference,