procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

poly_int: struct_value_size

Browse source 
This patch makes calls.c treat struct_value_size (one of the
operands to a call pattern) as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* calls.c (emit_call_1, expand_call): Change struct_value_size from
	a HOST_WIDE_INT to a poly_int64.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r256162
This commit is contained in:
Richard Sandiford 2018-01-03 07:19:04 +00:00 • committed by Richard Sandiford
parent 95fe7b4862
commit 5c8e61cfa2
2 changed files with 14 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* calls.c (emit_call_1, expand_call): Change struct_value_size from
a HOST_WIDE_INT to a poly_int64.
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

12
gcc/calls.c
View file

@ -378,7 +378,7 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU
tree funtype ATTRIBUTE_UNUSED,
poly_int64 stack_size ATTRIBUTE_UNUSED,
poly_int64 rounded_stack_size,
HOST_WIDE_INT struct_value_size ATTRIBUTE_UNUSED,
poly_int64 struct_value_size ATTRIBUTE_UNUSED,
rtx next_arg_reg ATTRIBUTE_UNUSED, rtx valreg,
int old_inhibit_defer_pop, rtx call_fusage, int ecf_flags,
cumulative_args_t args_so_far ATTRIBUTE_UNUSED)
@ -438,7 +438,8 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU
next_arg_reg, NULL_RTX);
else
pat = targetm.gen_sibcall (funmem, rounded_stack_size_rtx,
next_arg_reg, GEN_INT (struct_value_size));
next_arg_reg,
gen_int_mode (struct_value_size, Pmode));
}
/* If the target has "call" or "call_value" insns, then prefer them
if no arguments are actually popped. If the target does not have
@ -471,7 +472,7 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU
next_arg_reg, NULL_RTX);
else
pat = targetm.gen_call (funmem, rounded_stack_size_rtx, next_arg_reg,
GEN_INT (struct_value_size));
gen_int_mode (struct_value_size, Pmode));
}
emit_insn (pat);
@ -3237,7 +3238,7 @@ expand_call (tree exp, rtx target, int ignore)
/* Size of aggregate value wanted, or zero if none wanted
or if we are using the non-reentrant PCC calling convention
or expecting the value in registers. */
HOST_WIDE_INT struct_value_size = 0;
poly_int64 struct_value_size = 0;
/* Nonzero if called function returns an aggregate in memory PCC style,
by returning the address of where to find it. */
int pcc_struct_value = 0;
@ -3399,7 +3400,8 @@ expand_call (tree exp, rtx target, int ignore)
}
#else /* not PCC_STATIC_STRUCT_RETURN */
{
struct_value_size = int_size_in_bytes (rettype);
if (!poly_int_tree_p (TYPE_SIZE_UNIT (rettype), &struct_value_size))
struct_value_size = -1;
/* Even if it is semantically safe to use the target as the return
slot, it may be not sufficiently aligned for the return type. */