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* [gcc r13-3375] s390: Fix bootstrap error with checking and -m31.
@ 2022-10-19 11:00 Robin Dapp
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From: Robin Dapp @ 2022-10-19 11:00 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:95c5cffb712d90bfe36f2cf71d3a052b8068db34
commit r13-3375-g95c5cffb712d90bfe36f2cf71d3a052b8068db34
Author: Robin Dapp <rdapp@linux.ibm.com>
Date: Tue Oct 18 12:27:37 2022 +0200
s390: Fix bootstrap error with checking and -m31.
For a while already we hit an ICE when bootstrapping with -m31 and
--enable-checking=all.
../../../../libgfortran/ieee/ieee_helper.c: In function 'ieee_class_helper_16':
../../../../libgfortran/ieee/ieee_helper.c:77:3: internal compiler error: RTL check: expected code 'reg', have 'subreg' in rhs_regno, at rtl.h:1932
77 | }
| ^
../../../../libgfortran/ieee/ieee_helper.c:87:1: note: in expansion of macro 'CLASSMACRO'
87 | CLASSMACRO(16)
| ^~~~~~~~~~
This patch fixes the problem by first checking for reload_completed
and also ensuring that REGNO is only called on reg operands rather
than subregs.
gcc/ChangeLog:
* config/s390/s390.md: Move reload_completed and check operands for REG_P.
Diff:
---
gcc/config/s390/s390.md | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index 962927c3112..c89b15cf4f3 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -8797,9 +8797,10 @@
(neg:DI (match_operand:DI 1 "register_operand" "")))
(clobber (reg:CC CC_REGNUM))]
"!TARGET_ZARCH
- && (REGNO (operands[0]) == REGNO (operands[1])
- || s390_split_ok_p (operands[0], operands[1], DImode, 0))
- && reload_completed"
+ && reload_completed
+ && ((REG_P (operands[0]) && REG_P (operands[1])
+ && REGNO (operands[0]) == REGNO (operands[1]))
+ || s390_split_ok_p (operands[0], operands[1], DImode, 0))"
[(parallel
[(set (match_dup 2) (neg:SI (match_dup 3)))
(clobber (reg:CC CC_REGNUM))])
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