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or1k: only force reg for immediates

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The force_reg in or1k_expand_compare is hard coded for SImode, which is fine as
this used to only be used on SI expands.  However, with FP support this will
cause issues.  In general we should only force the right hand operand to a
register if its an immediate.  This patch adds an condition to check for that.

gcc/ChangeLog:

	* config/or1k/or1k.c (or1k_expand_compare): Check for int before
	force_reg.

From-SVN: r273651
This commit is contained in:
Stafford Horne 2019-07-21 21:02:54 +00:00 committed by Stafford Horne
parent 44080af98e
commit 575ce89342
2 changed files with 11 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-07-22 Stafford Horne <shorne@gmail.com>
* config/or1k/or1k.c (or1k_expand_compare): Check for int before
force_reg.
2019-07-22 Stafford Horne <shorne@gmail.com>
* config.gcc (or1k*-*-*): Add mhard-float, mdouble-float, msoft-float

10
gcc/config/or1k/or1k.c
View File

@ -1448,13 +1448,15 @@ void
or1k_expand_compare (rtx *operands)
{
rtx sr_f = gen_rtx_REG (BImode, SR_F_REGNUM);
rtx righthand_op = XEXP (operands[0], 1);
rtx_code cmp_code = GET_CODE (operands[0]);
bool flag_check_ne = true;
/* The RTL may receive an immediate in argument 1 of the compare, this is not
supported unless we have l.sf*i instructions, force them into registers. */
if (!TARGET_SFIMM)
XEXP (operands[0], 1) = force_reg (SImode, XEXP (operands[0], 1));
/* Integer RTL may receive an immediate in argument 1 of the compare, this is
not supported unless we have l.sf*i instructions, force them into
registers. */
if (!TARGET_SFIMM && CONST_INT_P (righthand_op))
XEXP (operands[0], 1) = force_reg (SImode, righthand_op);
/* Normalize comparison operators to ones OpenRISC support. */
switch (cmp_code)