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sh.c (unspec_caller_rtx_p): New.

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* config/sh/sh.c (unspec_caller_rtx_p): New.
	(sh_cannot_copy_insn_p): New.
        (TARGET_CANNOT_COPY_INSN_P): New.

From-SVN: r63084
This commit is contained in:
Kaz Kojima 2003-02-19 02:15:04 +00:00
parent d7ddbe241a
commit 9f3a9a0809
2 changed files with 63 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2003-02-18 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/sh.c (unspec_caller_rtx_p): New.
(sh_cannot_copy_insn_p): New.
(TARGET_CANNOT_COPY_INSN_P): New.
2003-02-18 Richard Henderson <rth@redhat.com>
* c-common.c (handle_used_attribute): Accept static data too.

57
gcc/config/sh/sh.c
View File

@ -218,6 +218,8 @@ static int shiftcosts PARAMS ((rtx));
static int andcosts PARAMS ((rtx));
static int addsubcosts PARAMS ((rtx));
static int multcosts PARAMS ((rtx));
static bool unspec_caller_rtx_p PARAMS ((rtx));
static bool sh_cannot_copy_insn_p PARAMS ((rtx));
static bool sh_rtx_costs PARAMS ((rtx, int, int, int *));
static int sh_address_cost PARAMS ((rtx));
@ -271,6 +273,8 @@ static int sh_address_cost PARAMS ((rtx));
#undef TARGET_FUNCTION_OK_FOR_SIBCALL
#define TARGET_FUNCTION_OK_FOR_SIBCALL sh_function_ok_for_sibcall
#undef TARGET_CANNOT_COPY_INSN_P
#define TARGET_CANNOT_COPY_INSN_P sh_cannot_copy_insn_p
#undef TARGET_RTX_COSTS
#define TARGET_RTX_COSTS sh_rtx_costs
#undef TARGET_ADDRESS_COST
@ -1215,6 +1219,59 @@ output_file_start (file)
TARGET_SHMEDIA64 ? 64 : 32);
}
/* Check if PAT includes UNSPEC_CALLER unspec pattern. */
static bool
unspec_caller_rtx_p (pat)
rtx pat;
{
switch (GET_CODE (pat))
{
case CONST:
return unspec_caller_rtx_p (XEXP (pat, 0));
case PLUS:
case MINUS:
if (unspec_caller_rtx_p (XEXP (pat, 0)))
return true;
return unspec_caller_rtx_p (XEXP (pat, 1));
case UNSPEC:
if (XINT (pat, 1) == UNSPEC_CALLER)
return true;
default:
break;
}
return false;
}
/* Indicate that INSN cannot be duplicated. This is true for insn
that generates an unique label. */
static bool
sh_cannot_copy_insn_p (insn)
rtx insn;
{
rtx pat;
if (!reload_completed || !flag_pic)
return false;
if (GET_CODE (insn) != INSN)
return false;
if (asm_noperands (insn) >= 0)
return false;
pat = PATTERN (insn);
if (GET_CODE (pat) != SET)
return false;
pat = SET_SRC (pat);
if (unspec_caller_rtx_p (pat))
return true;
return false;
}
/* Actual number of instructions used to make a shift by N. */
static const char ashiftrt_insns[] =
{ 0,1,2,3,4,5,8,8,8,8,8,8,8,8,8,8,2,3,4,5,8,8,8,8,8,8,8,8,8,8,8,2};