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h8300.c (notice_update_cc): Don't assume that recog_data.operands[0] is always associated with cc0.

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* config/h8300/h8300.c (notice_update_cc): Don't assume that
	recog_data.operands[0] is always associated with cc0.

	* gcc.c-torture/execute/20030120-1.c: New.

From-SVN: r61498
This commit is contained in:
Kazu Hirata 2003-01-20 06:42:58 +00:00 committed by Kazu Hirata
parent 3fdd055a2b
commit d99c740f58
4 changed files with 69 additions and 4 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2003-01-20 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.c (notice_update_cc): Don't assume that
recog_data.operands[0] is always associated with cc0.
2003-01-19 David Edelsohn <edelsohn@gnu.org>
* collect2.c (ldgetname): Expand declaration to prototype.

14
gcc/config/h8300/h8300.c
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@ -1710,6 +1710,8 @@ notice_update_cc (body, insn)
rtx body;
rtx insn;
{
rtx set;
switch (get_attr_cc (insn))
{
case CC_NONE:
@ -1732,7 +1734,10 @@ notice_update_cc (body, insn)
that's ok because alter_cond will change tests to use EQ/NE. */
CC_STATUS_INIT;
cc_status.flags |= CC_OVERFLOW_UNUSABLE | CC_NO_CARRY;
cc_status.value1 = recog_data.operand[0];
set = single_set (insn);
cc_status.value1 = SET_SRC (set);
if (SET_DEST (set) != cc0_rtx)
cc_status.value2 = SET_DEST (set);
break;
case CC_SET_ZNV:
@ -1741,9 +1746,10 @@ notice_update_cc (body, insn)
alter_cond will change tests to use EQ/NE. */
CC_STATUS_INIT;
cc_status.flags |= CC_NO_CARRY;
cc_status.value1 = recog_data.operand[0];
if (GET_CODE (body) == SET && REG_P (SET_SRC (body)))
cc_status.value2 = SET_SRC (body);
set = single_set (insn);
cc_status.value1 = SET_SRC (set);
if (SET_DEST (set) != cc0_rtx)
cc_status.value2 = SET_DEST (set);
break;
case CC_COMPARE:

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2003-01-20 Kazu Hirata <kazu@cs.umass.edu>
* gcc.c-torture/execute/20030120-1.c: New.
2003-01-19 Paolo Carlini <pcarlini@unitus.it>
* g++.old-deja/g++.pt/typename13.C: Remove XFAIL.

50
gcc/testsuite/gcc.c-torture/execute/20030120-1.c Normal file
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@ -0,0 +1,50 @@
/* On H8/300 port, NOTICE_UPDATE_CC had a bug that causes the final
pass to remove test insns that should be kept. */
unsigned short
test1 (unsigned short w)
{
if ((w & 0xff00) == 0)
{
if (w == 0)
w = 2;
}
return w;
}
unsigned long
test2 (unsigned long w)
{
if ((w & 0xffff0000) == 0)
{
if (w == 0)
w = 2;
}
return w;
}
int
test3 (unsigned short a)
{
if (a & 1)
return 1;
else if (a)
return 1;
else
return 0;
}
int
main ()
{
if (test1 (1) != 1)
abort ();
if (test2 (1) != 1)
abort ();
if (test3 (2) != 1)
abort ();
exit (0);
}