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re PR target/14599 (ieee/20000320-1.c fails for -mips16 using -O2 and above)

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PR target/14599
	* config/mips/mips.md (UNSPEC_GP): New constant.
	* config/mips/mips.c (CONST_GP_P): Expect the CONST to contain
	an UNSPEC instead of (reg $gp).
	(mips16_gp_pseudo_reg): Change accordingly.
	(print_operand): Print $gp directly when handling CONST_GP_P.

From-SVN: r79527
This commit is contained in:
Richard Sandiford 2004-03-16 09:22:36 +00:00
parent 3704aae954
commit 4e7edcca30
3 changed files with 21 additions and 9 deletions
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13
gcc/ChangeLog
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@ -1,9 +1,18 @@
2004-03-16 Richard Zidlicky <rz@linux-m68k.org>
2004-03-16 Richard Sandiford <rsandifo@redhat.com>
PR target/14599
* config/mips/mips.md (UNSPEC_GP): New constant.
* config/mips/mips.c (CONST_GP_P): Expect the CONST to contain
an UNSPEC instead of (reg $gp).
(mips16_gp_pseudo_reg): Change accordingly.
(print_operand): Print $gp directly when handling CONST_GP_P.
2004-03-16 Richard Zidlicky <rz@linux-m68k.org>
* config.gcc, config/m68k/linux.h: Implement with-cpu for m68k-linux.
* longlong.h: Make code 68060 clean when compiling for m68060.
2004-03-16 Richard Zidlicky <rz@linux-m68k.org>
2004-03-16 Richard Zidlicky <rz@linux-m68k.org>
* config/m68k/m68k.md: Fix constraints for bitfield instructions.
* doc/md.texi: Clarify description of "i" constraint.

16
gcc/config/mips/mips.c
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@ -87,10 +87,12 @@ enum internal_test {
#define UNSPEC_ADDRESS_TYPE(X) \
((enum mips_symbol_type) (XINT (X, 1) - UNSPEC_ADDRESS_FIRST))
/* True if X is (const $gp). This is used to initialize the mips16
gp pseudo register. */
/* True if X is (const (unspec [(const_int 0)] UNSPEC_GP)). This is used
to initialize the mips16 gp pseudo register. */
#define CONST_GP_P(X) \
(GET_CODE (X) == CONST && XEXP (X, 0) == pic_offset_table_rtx)
(GET_CODE (X) == CONST \
&& GET_CODE (XEXP (X, 0)) == UNSPEC \
&& XINT (XEXP (X, 0), 1) == UNSPEC_GP)
/* The maximum distance between the top of the stack frame and the
value $sp has when we save & restore registers.
@ -5564,7 +5566,7 @@ print_operand (FILE *file, rtx op, int letter)
fputs (code == EQ ? "t" : "f", file);
else if (CONST_GP_P (op))
print_operand (file, XEXP (op, 0), letter);
fputs (reg_names[GLOBAL_POINTER_REGNUM], file);
else
output_addr_const (file, op);
@ -7799,7 +7801,7 @@ mips16_gp_pseudo_reg (void)
{
if (cfun->machine->mips16_gp_pseudo_rtx == NULL_RTX)
{
rtx const_gp;
rtx unspec;
rtx insn, scan;
cfun->machine->mips16_gp_pseudo_rtx = gen_reg_rtx (Pmode);
@ -7807,10 +7809,10 @@ mips16_gp_pseudo_reg (void)
/* We want to initialize this to a value which gcc will believe
is constant. */
const_gp = gen_rtx_CONST (Pmode, pic_offset_table_rtx);
start_sequence ();
unspec = gen_rtx_UNSPEC (VOIDmode, gen_rtvec (1, const0_rtx), UNSPEC_GP);
emit_move_insn (cfun->machine->mips16_gp_pseudo_rtx,
const_gp);
gen_rtx_CONST (Pmode, unspec));
insn = get_insns ();
end_sequence ();

1
gcc/config/mips/mips.md
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@ -56,6 +56,7 @@
(UNSPEC_LOADGP 26)
(UNSPEC_LOAD_CALL 27)
(UNSPEC_LOAD_GOT 28)
(UNSPEC_GP 29)
(UNSPEC_ADDRESS_FIRST 100)