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S/390: Reject long disp for vector load/store early

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The vector memory instructions only support short displacements.
Reject invalid displacements early to prevent plenty of lay
instructions to be generated later which then cannot be merged
properly.

gcc/ChangeLog:

2019-04-03  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/s390.c (s390_legitimate_address_p): Reject long
	displacement addresses for vector mode operands.

From-SVN: r270122
This commit is contained in:
Andreas Krebbel 2019-04-03 11:26:09 +00:00 committed by Andreas Krebbel
parent 487efcfdac
commit 615792b72e
2 changed files with 16 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-04-03 Andreas Krebbel <krebbel@linux.ibm.com>
* config/s390/s390.c (s390_legitimate_address_p): Reject long
displacement addresses for vector mode operands.
2019-04-03 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (GMASK_LEN): Define.

11
gcc/config/s390/s390.c
View File

@ -4677,6 +4677,17 @@ s390_legitimate_address_p (machine_mode mode, rtx addr, bool strict)
if (!s390_decompose_address (addr, &ad))
return false;
/* The vector memory instructions only support short displacements.
Reject invalid displacements early to prevent plenty of lay
instructions to be generated later which then cannot be merged
properly. */
if (TARGET_VX
&& VECTOR_MODE_P (mode)
&& ad.disp != NULL_RTX
&& CONST_INT_P (ad.disp)
&& !SHORT_DISP_IN_RANGE (INTVAL (ad.disp)))
return false;
if (strict)
{
if (ad.base && !REGNO_OK_FOR_BASE_P (REGNO (ad.base)))