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re PR target/52506 ([avr]: XMEGA: Wrong order of save/restore of RAMPX/Y/Z/D SFRs in ISR pro-/epilogue) 

PR target/52506
	* gcc/config/avr/avr.c (expand_epilogue): Fix order of restoration
	to: RAMPZ, RAMPY, RAMPX, RAMPD.
	(expand_prologue): Only clear RAMPZ if it has effect on RAM-read.

From-SVN: r185032
This commit is contained in:
Georg-Johann Lay 2012-03-07 10:38:25 +00:00 committed by Georg-Johann Lay
parent 611082257d
commit 42601c633c
2 changed files with 17 additions and 10 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2012-03-07 Georg-Johann Lay <avr@gjlay.de>
PR target/52506
* gcc/config/avr/avr.c (expand_epilogue): Fix order of restoration
to: RAMPZ, RAMPY, RAMPX, RAMPD.
(expand_prologue): Only clear RAMPZ if it has effect on RAM-read.
2012-03-07 Georg-Johann Lay <avr@gjlay.de>
PR target/52505

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

@ -1123,11 +1123,11 @@ expand_prologue (void)
emit_push_sfr (rampy_rtx, false /* frame-related */, true /* clr */);
}
if (AVR_HAVE_RAMPZ
if (AVR_HAVE_RAMPZ
&& TEST_HARD_REG_BIT (set, REG_Z)
&& TEST_HARD_REG_BIT (set, REG_Z + 1))
{
emit_push_sfr (rampz_rtx, false /* frame-related */, true /* clr */);
emit_push_sfr (rampz_rtx, false /* frame-related */, AVR_HAVE_RAMPD);
}
} /* is_interrupt is_signal */
@ -1347,12 +1347,12 @@ expand_epilogue (bool sibcall_p)
/* Restore RAMPZ/Y/X/D using tmp_reg as scratch.
The conditions to restore them must be tha same as in prologue. */
if (AVR_HAVE_RAMPX
&& TEST_HARD_REG_BIT (set, REG_X)
&& TEST_HARD_REG_BIT (set, REG_X + 1))
if (AVR_HAVE_RAMPZ
&& TEST_HARD_REG_BIT (set, REG_Z)
&& TEST_HARD_REG_BIT (set, REG_Z + 1))
{
emit_pop_byte (TMP_REGNO);
emit_move_insn (rampx_rtx, tmp_reg_rtx);
emit_move_insn (rampz_rtx, tmp_reg_rtx);
}
if (AVR_HAVE_RAMPY
@ -1364,12 +1364,12 @@ expand_epilogue (bool sibcall_p)
emit_move_insn (rampy_rtx, tmp_reg_rtx);
}
if (AVR_HAVE_RAMPZ
&& TEST_HARD_REG_BIT (set, REG_Z)
&& TEST_HARD_REG_BIT (set, REG_Z + 1))
if (AVR_HAVE_RAMPX
&& TEST_HARD_REG_BIT (set, REG_X)
&& TEST_HARD_REG_BIT (set, REG_X + 1))
{
emit_pop_byte (TMP_REGNO);
emit_move_insn (rampz_rtx, tmp_reg_rtx);
emit_move_insn (rampx_rtx, tmp_reg_rtx);
}
if (AVR_HAVE_RAMPD)