* [Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
@ 2015-09-03 9:36 ` ktkachov at gcc dot gnu.org
2015-09-03 11:03 ` alalaw01 at gcc dot gnu.org
` (8 subsequent siblings)
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From: ktkachov at gcc dot gnu.org @ 2015-09-03 9:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |alan.lawrence at arm dot com,
| |ktkachov at gcc dot gnu.org
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Is -mrestrict-it needed to reproduce this?
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
2015-09-03 9:36 ` [Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it ktkachov at gcc dot gnu.org
@ 2015-09-03 11:03 ` alalaw01 at gcc dot gnu.org
2015-09-03 12:35 ` ktkachov at gcc dot gnu.org
` (7 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: alalaw01 at gcc dot gnu.org @ 2015-09-03 11:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
alalaw01 at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-09-03
CC| |alalaw01 at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from alalaw01 at gcc dot gnu.org ---
I can reproduce the ICE with -mthumb, both "-mfloat-abi=hard -mfpu=neon" and
"-mfloat-abi=soft", but only with -mrestrict-it in both cases.
"-mfloat-abi=hard -mfpu=neon-fp16" is OK with and without -mrestrict-it.
I note the movhf patterns in vfp.md are only usable with neon-fp16; in other
cases, we appear to be using arm32_movhf in arm.md.
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
2015-09-03 9:36 ` [Bug target/67439] ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it ktkachov at gcc dot gnu.org
2015-09-03 11:03 ` alalaw01 at gcc dot gnu.org
@ 2015-09-03 12:35 ` ktkachov at gcc dot gnu.org
2015-09-03 13:04 ` [Bug target/67439] [4.9/5/6 Regression]ICE: " ktkachov at gcc dot gnu.org
` (6 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-03 12:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.9.4, 5.2.1, 6.0
--- Comment #3 from ktkachov at gcc dot gnu.org ---
Ok, I think I see the problem here.
*arm32_movhf should not just have a !arm_restrict_it in its predicate, it
should disable the alternatives in a smarter way.
I'll see what I can do.
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2015-09-03 12:35 ` ktkachov at gcc dot gnu.org
@ 2015-09-03 13:04 ` ktkachov at gcc dot gnu.org
2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
` (5 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-03 13:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target|arm-unknown-linux-gnueabi |arm*
Assignee|unassigned at gcc dot gnu.org |ktkachov at gcc dot gnu.org
Summary|ICE: unrecognizable insn |[4.9/5/6 Regression]ICE:
|compiling arm-fp16 |unrecognizable insn
|testcases with |compiling arm-fp16
|-march=armv7-a and |testcases with
|-mrestrict-it |-march=armv7-a and
| |-mrestrict-it
--- Comment #4 from ktkachov at gcc dot gnu.org ---
Mine.
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2015-09-03 13:04 ` [Bug target/67439] [4.9/5/6 Regression]ICE: " ktkachov at gcc dot gnu.org
@ 2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
` (4 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-03 13:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
@ 2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
2015-09-10 10:44 ` ktkachov at gcc dot gnu.org
` (3 subsequent siblings)
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From: ktkachov at gcc dot gnu.org @ 2015-09-03 13:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
--- Comment #5 from ktkachov at gcc dot gnu.org ---
-mrestrict-it was introduced in 4.9 but it's enabled by default for
-march=armv8-a -mthumb. So, while -mrestrict-it did not exist for 4.8, this is
a regression from 4.8 as far as compiling with -march=armv8-a -mthumb is
concerned
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (5 preceding siblings ...)
2015-09-03 13:07 ` ktkachov at gcc dot gnu.org
@ 2015-09-10 10:44 ` ktkachov at gcc dot gnu.org
2015-09-10 10:50 ` ktkachov at gcc dot gnu.org
` (2 subsequent siblings)
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-10 10:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
--- Comment #6 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Thu Sep 10 10:43:43 2015
New Revision: 227630
URL: https://gcc.gnu.org/viewcvs?rev=227630&root=gcc&view=rev
Log:
[ARM] PR 67439: Allow matching of *arm32_movhf when -mrestrict-it is on
PR target/67439
* config/arm/arm.md (*arm32_movhf): Remove !arm_restrict_it from
predicate. Set predicable_short_it attr to "no".
* gcc.target/arm/pr67439_1.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr67439_1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (6 preceding siblings ...)
2015-09-10 10:44 ` ktkachov at gcc dot gnu.org
@ 2015-09-10 10:50 ` ktkachov at gcc dot gnu.org
2015-09-23 10:37 ` ktkachov at gcc dot gnu.org
2015-10-16 8:22 ` rguenth at gcc dot gnu.org
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-10 10:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
--- Comment #7 from ktkachov at gcc dot gnu.org ---
Fixed for trunk.
Will backport to 5 and 4.9 in a few days
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (7 preceding siblings ...)
2015-09-10 10:50 ` ktkachov at gcc dot gnu.org
@ 2015-09-23 10:37 ` ktkachov at gcc dot gnu.org
2015-10-16 8:22 ` rguenth at gcc dot gnu.org
9 siblings, 0 replies; 10+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2015-09-23 10:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
--- Comment #8 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Wed Sep 23 10:36:48 2015
New Revision: 228039
URL: https://gcc.gnu.org/viewcvs?rev=228039&root=gcc&view=rev
Log:
[ARM] PR 67439: Allow matching of *arm32_movhf when -mrestrict-it is on
Backport from mainline
2015-09-10 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/67439
* config/arm/arm.md (*arm32_movhf): Remove !arm_restrict_it from
predicate. Set predicable_short_it attr to "no".
PR target/67439
* gcc.target/arm/pr67439_1.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/arm/pr67439_1.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/arm/arm.md
branches/gcc-5-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
[not found] <bug-67439-4@http.gcc.gnu.org/bugzilla/>
` (8 preceding siblings ...)
2015-09-23 10:37 ` ktkachov at gcc dot gnu.org
@ 2015-10-16 8:22 ` rguenth at gcc dot gnu.org
9 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-10-16 8:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.9.4
^ permalink raw reply [flat|nested] 10+ messages in thread