* [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512
[not found] <bug-94072-4@http.gcc.gnu.org/bugzilla/>
@ 2020-03-09 8:07 ` rguenth at gcc dot gnu.org
2020-03-17 12:59 ` [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197 jakub at gcc dot gnu.org
` (3 subsequent siblings)
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From: rguenth at gcc dot gnu.org @ 2020-03-09 8:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94072
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |10.0
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197
[not found] <bug-94072-4@http.gcc.gnu.org/bugzilla/>
2020-03-09 8:07 ` [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 rguenth at gcc dot gnu.org
@ 2020-03-17 12:59 ` jakub at gcc dot gnu.org
2020-03-17 13:43 ` rsandifo at gcc dot gnu.org
` (2 subsequent siblings)
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From: jakub at gcc dot gnu.org @ 2020-03-17 12:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94072
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2020-03-17
Status|UNCONFIRMED |NEW
Priority|P3 |P1
CC| |jakub at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Ever confirmed|0 |1
Summary|[10 Regression] ICE: |[10 Regression] ICE:
|SIGSEGV due to infinite |SIGSEGV due to infinite
|recursion in |recursion in
|expand_expr/expand_expr_rea |expand_expr/expand_expr_rea
|l_1 with |l_1 with
|-msve-vector-bits=512 |-msve-vector-bits=512 since
| |r10-4197
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r10-4197-g624d0f07d51b7fa8bc99142bd0e8380fb9e7badc
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197
[not found] <bug-94072-4@http.gcc.gnu.org/bugzilla/>
2020-03-09 8:07 ` [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 rguenth at gcc dot gnu.org
2020-03-17 12:59 ` [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197 jakub at gcc dot gnu.org
@ 2020-03-17 13:43 ` rsandifo at gcc dot gnu.org
2020-03-20 16:15 ` cvs-commit at gcc dot gnu.org
2020-03-20 16:16 ` rsandifo at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-03-17 13:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94072
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Mine.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197
[not found] <bug-94072-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2020-03-17 13:43 ` rsandifo at gcc dot gnu.org
@ 2020-03-20 16:15 ` cvs-commit at gcc dot gnu.org
2020-03-20 16:16 ` rsandifo at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-03-20 16:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94072
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Sandiford <rsandifo@gcc.gnu.org>:
https://gcc.gnu.org/g:1aa22b1916a493ac46453d96e0c78ca47bcaeda3
commit r10-7301-g1aa22b1916a493ac46453d96e0c78ca47bcaeda3
Author: Richard Sandiford <richard.sandiford@arm.com>
Date: Tue Mar 17 14:43:08 2020 +0000
c-family: Tighten vector handling in type_for_mode [PR94072]
In this PR we had a 512-bit VECTOR_TYPE whose mode is XImode
(an integer mode used for four 128-bit vectors). When trying
to expand a zero constant for it, we hit code in expand_expr_real_1
that tries to use the associated integer type instead. The code used
type_for_mode (XImode, 1) to get this integer type.
However, the c-family implementation of type_for_mode checks for
any registered built-in type that matches the mode and has the
right signedness. This meant that it could return a built-in
vector type when given an integer mode (particularly if, as here,
the vector type isn't supported by the current subtarget and so
TYPE_MODE != TYPE_MODE_RAW). The expand code would then cycle
endlessly trying to use this "new" type instead of the original
vector type.
2020-03-20 Richard Sandiford <richard.sandiford@arm.com>
gcc/c-family/
PR middle-end/94072
* c-common.c (c_common_type_for_mode): Before using a registered
built-in type, check that the vectorness of the type matches
the vectorness of the mode.
gcc/testsuite/
PR middle-end/94072
* gcc.target/aarch64/pr94072.c: New test.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/94072] [10 Regression] ICE: SIGSEGV due to infinite recursion in expand_expr/expand_expr_real_1 with -msve-vector-bits=512 since r10-4197
[not found] <bug-94072-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2020-03-20 16:15 ` cvs-commit at gcc dot gnu.org
@ 2020-03-20 16:16 ` rsandifo at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-03-20 16:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94072
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on master.
^ permalink raw reply [flat|nested] 5+ messages in thread