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mips.c (mips_add_cfa_restore): New function.

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gcc/
2011-09-25  Bernd Schmidt  <bernds@codesourcery.com>
	    Richard Sandiford  <rdsandiford@googlemail.com>

	* config/mips/mips.c (mips_add_cfa_restore): New function.
	(mips16e_save_restore_reg): Use it.
	(mips_restore_reg): Likewise.  Split double FPRs for
	REG_CFA_RESTORE notes.

Co-Authored-By: Richard Sandiford <rdsandiford@googlemail.com>

From-SVN: r179286
This commit is contained in:
Bernd Schmidt 2011-09-27 17:23:27 +00:00 committed by Richard Sandiford
parent 58ac64596a
commit a744996112
2 changed files with 24 additions and 4 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-09-27 Bernd Schmidt <bernds@codesourcery.com>
Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips.c (mips_add_cfa_restore): New function.
(mips16e_save_restore_reg): Use it.
(mips_restore_reg): Likewise. Split double FPRs for
REG_CFA_RESTORE notes.
2011-09-27 Richard Sandiford <rdsandiford@googlemail.com>
PR middle-end/50386

20
gcc/config/mips/mips.c
View File

@ -8202,6 +8202,15 @@ mips_frame_set (rtx mem, rtx reg)
return set;
}
/* Record that the epilogue has restored call-saved register REG. */
static void
mips_add_cfa_restore (rtx reg)
{
mips_epilogue.cfa_restores = alloc_reg_note (REG_CFA_RESTORE, reg,
mips_epilogue.cfa_restores);
}
/* If a MIPS16e SAVE or RESTORE instruction saves or restores register
mips16e_s2_s8_regs[X], it must also save the registers in indexes
@ -8393,8 +8402,7 @@ mips16e_save_restore_reg (bool restore_p, bool reg_parm_p,
reg = gen_rtx_REG (SImode, regno);
if (restore_p)
{
mips_epilogue.cfa_restores = alloc_reg_note (REG_CFA_RESTORE, reg,
mips_epilogue.cfa_restores);
mips_add_cfa_restore (reg);
return gen_rtx_SET (VOIDmode, reg, mem);
}
if (reg_parm_p)
@ -10290,9 +10298,13 @@ mips_restore_reg (rtx reg, rtx mem)
$7 instead and adjust the return insn appropriately. */
if (TARGET_MIPS16 && REGNO (reg) == RETURN_ADDR_REGNUM)
reg = gen_rtx_REG (GET_MODE (reg), GP_REG_FIRST + 7);
else if (GET_MODE (reg) == DFmode && !TARGET_FLOAT64)
{
mips_add_cfa_restore (mips_subword (reg, true));
mips_add_cfa_restore (mips_subword (reg, false));
}
else
mips_epilogue.cfa_restores = alloc_reg_note (REG_CFA_RESTORE, reg,
mips_epilogue.cfa_restores);
mips_add_cfa_restore (reg);
mips_emit_save_slot_move (reg, mem, MIPS_EPILOGUE_TEMP (GET_MODE (reg)));
if (REGNO (reg) == REGNO (mips_epilogue.cfa_reg))