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* [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
@ 2020-11-03 11:29 acoplan at gcc dot gnu.org
2020-11-03 11:30 ` [Bug tree-optimization/97693] " acoplan at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: acoplan at gcc dot gnu.org @ 2020-11-03 11:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
Bug ID: 97693
Summary: [11 Regression] SVE: ICE in prepare_load_store_mask,
at tree-vect-stmts.c since r11-1143-gb05d5563
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
For the following C testcase:
extern short a[];
int b;
short c, d;
unsigned e() {
if (c)
return c;
return d;
}
void f() {
for (unsigned g = b; g; g += 6)
for (_Bool h = 0; h < (_Bool)e(); h = 1)
a[g] = 1 / b;
}
AArch64 GCC ICEs with -O3 -march=armv8.2-a+sve since
r11-1143-gb05d5563f4be13b4a0d0951375a82adf483973c0. To reproduce:
$ aarch64-elf-gcc -c -O3 -march=armv8.2-a+sve test.c
during GIMPLE pass: vect
test.c: In function 'f':
test.c:9:6: internal compiler error: in prepare_load_store_mask, at
tree-vect-stmts.c:1758
9 | void f() {
| ^
0x106d15f prepare_load_store_mask
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:1758
0x108784a vectorizable_call
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:3440
0x109972f vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-stmts.c:10838
0x109ffbc vect_transform_loop_stmt
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-loop.c:8933
0x10bd364 vect_transform_loop(_loop_vec_info*, gimple*)
/home/alecop01/toolchain/src/gcc/gcc/tree-vect-loop.c:9367
0x10e9a7e try_vectorize_loop_1
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1091
0x10ea1ab try_vectorize_loop
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1148
0x10ea585 vectorize_loops()
/home/alecop01/toolchain/src/gcc/gcc/tree-vectorizer.c:1229
0xf76a5b execute
/home/alecop01/toolchain/src/gcc/gcc/tree-ssa-loop.c:414
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
@ 2020-11-03 11:30 ` acoplan at gcc dot gnu.org
2020-11-03 12:50 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: acoplan at gcc dot gnu.org @ 2020-11-03 11:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
Alex Coplan <acoplan at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Known to fail| |11.0
Target Milestone|--- |11.0
Target| |aarch64
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
2020-11-03 11:30 ` [Bug tree-optimization/97693] " acoplan at gcc dot gnu.org
@ 2020-11-03 12:50 ` rguenth at gcc dot gnu.org
2020-11-16 16:57 ` rsandifo at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-03 12:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
Keywords| |ice-on-valid-code
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Somebody familiar with the prepare_load_store_mask code needs to look (ISTR a
duplicate in the same area).
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
2020-11-03 11:30 ` [Bug tree-optimization/97693] " acoplan at gcc dot gnu.org
2020-11-03 12:50 ` rguenth at gcc dot gnu.org
@ 2020-11-16 16:57 ` rsandifo at gcc dot gnu.org
2020-11-16 17:03 ` rsandifo at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-11-16 16:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2020-11-16
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Mine.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
` (2 preceding siblings ...)
2020-11-16 16:57 ` rsandifo at gcc dot gnu.org
@ 2020-11-16 17:03 ` rsandifo at gcc dot gnu.org
2020-11-17 11:52 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-11-16 17:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 49570
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49570&action=edit
Candidate patch
Looks like a vectype argument got dropped during the conversion.
I'm going to test the attached overnight.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
` (3 preceding siblings ...)
2020-11-16 17:03 ` rsandifo at gcc dot gnu.org
@ 2020-11-17 11:52 ` cvs-commit at gcc dot gnu.org
2020-11-17 11:55 ` rsandifo at gcc dot gnu.org
2020-12-30 14:47 ` rsandifo at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-11-17 11:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
--- Comment #4 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:fcd513df9aa83f30dbd1c34d13c8a0972702ffa1
commit r11-5088-gfcd513df9aa83f30dbd1c34d13c8a0972702ffa1
Author: Richard Sandiford <richard.sandiford@arm.com>
Date: Tue Nov 17 11:51:40 2020 +0000
PR97693: Specify required vectype in vectorizable_call
The vectorizable_call part of r11-1143 dropped the required
vectype when moving from vect_get_vec_def_for_operand to
vect_get_vec_defs_for_operand. This caused an ICE on the
testcase for SVE, because we ended up with a non-predicate
value being passed to a predicate input.
AFAICT this was the only instance of that happening. The types
seemed to get carried forward for all the other converted calls.
gcc/
PR tree-optimization/97693
* tree-vect-stmts.c (vectorizable_call): Pass the required vectype
to vect_get_vec_defs_for_operand.
gcc/testsuite/
PR tree-optimization/97693
* gcc.dg/vect/pr97693.c: New test.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
` (4 preceding siblings ...)
2020-11-17 11:52 ` cvs-commit at gcc dot gnu.org
@ 2020-11-17 11:55 ` rsandifo at gcc dot gnu.org
2020-12-30 14:47 ` rsandifo at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-11-17 11:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on trunk.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97693] [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563
2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
` (5 preceding siblings ...)
2020-11-17 11:55 ` rsandifo at gcc dot gnu.org
@ 2020-12-30 14:47 ` rsandifo at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2020-12-30 14:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97693
--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
*** Bug 97850 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 8+ messages in thread
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2020-11-03 11:29 [Bug tree-optimization/97693] New: [11 Regression] SVE: ICE in prepare_load_store_mask, at tree-vect-stmts.c since r11-1143-gb05d5563 acoplan at gcc dot gnu.org
2020-11-03 11:30 ` [Bug tree-optimization/97693] " acoplan at gcc dot gnu.org
2020-11-03 12:50 ` rguenth at gcc dot gnu.org
2020-11-16 16:57 ` rsandifo at gcc dot gnu.org
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2020-11-17 11:52 ` cvs-commit at gcc dot gnu.org
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