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Fix uninitialized variable warnings.

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Check for use of previously uninitialized variables; call gcc_unreachable().
Replace abort() with gcc_unreachable().

2022-10-22  Michael Eager  <eager@eagercon.com>

gcc/
	* config/microblaze/microblaze.cc
	(microblaze_legitimize_address): Initialize 'reg' to NULL, check for NULL.
	(microblaze_address_insns): Replace abort() with gcc_unreachable().
	(print_operand_address): Same.
	(microblaze_expand_move): Initialize 'p1' to NULL, check for NULL.
	(get_branch_target): Replace abort() with gcc_unreachable().
This commit is contained in:
Michael Eager 2022-10-22 16:23:16 -07:00
parent 423df44a09
commit fef16c4519
1 changed files with 14 additions and 5 deletions
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19
gcc/config/microblaze/microblaze.cc
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@ -1103,7 +1103,7 @@ microblaze_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
if (GET_CODE (xinsn) == SYMBOL_REF)
{
rtx reg;
rtx reg = NULL;
if (microblaze_tls_symbol_p(xinsn))
{
reg = microblaze_legitimize_tls_address (xinsn, NULL_RTX);
@ -1133,6 +1133,11 @@ microblaze_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
reg = pic_ref;
}
}
else
{
/* This should never happen. */
gcc_unreachable ();
}
return reg;
}
@ -1474,7 +1479,7 @@ microblaze_address_insns (rtx x, machine_mode mode)
case TLS_DTPREL:
return 1;
default :
abort();
gcc_unreachable ();
}
default:
break;
@ -2624,7 +2629,7 @@ print_operand_address (FILE * file, rtx addr)
fputs ("@TLSDTPREL", file);
break;
default :
abort();
gcc_unreachable ();
break;
}
}
@ -3413,7 +3418,7 @@ microblaze_expand_move (machine_mode mode, rtx operands[])
}
if (GET_CODE (op1) == PLUS && GET_CODE (XEXP (op1,1)) == CONST)
{
rtx p0, p1, result, temp;
rtx p0, p1 = NULL, result, temp;
p0 = XEXP (XEXP (op1,1), 0);
@ -3423,6 +3428,10 @@ microblaze_expand_move (machine_mode mode, rtx operands[])
p0 = XEXP (p0, 0);
}
/* This should never happen. */
if (p1 == NULL)
gcc_unreachable ();
if (GET_CODE (p0) == UNSPEC && GET_CODE (p1) == CONST_INT
&& flag_pic && TARGET_PIC_DATA_TEXT_REL)
{
@ -3799,7 +3808,7 @@ get_branch_target (rtx branch)
if (GET_CODE (call) == SET)
call = SET_SRC (call);
if (GET_CODE (call) != CALL)
abort ();
gcc_unreachable ();
return XEXP (XEXP (call, 0), 0);
}