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* [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
@ 2014-06-25 12:57 jgreenhalgh at gcc dot gnu.org
2014-06-25 13:00 ` [Bug rtl-optimization/61608] " jgreenhalgh at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: jgreenhalgh at gcc dot gnu.org @ 2014-06-25 12:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
Bug ID: 61608
Summary: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c
scan-assembler tests
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jgreenhalgh at gcc dot gnu.org
Revision 211919 changes the position of the peephole2 pass causing a code-size
regression for ARM targets.
My compiler is configured with:
Target: arm-none-eabi
Configured with: /work/gcc-clean/src/gcc/configure --target=arm-none-eabi
--prefix=/work/gcc-clean/build-arm-none-eabi/install
--with-gmp=/work/gcc-clean/build-arm-none-eabi/host-tools
--with-mpfr=/work/gcc-clean/build-arm-none-eabi/host-tools
--with-mpc=/work/gcc-clean/build-arm-none-eabi/host-tools
--with-pkgversion=unknown --disable-shared --disable-nls --disable-threads
--disable-tls --enable-checking=yes --enable-languages=c,c++,fortran
--with-newlib --with-arch=armv8-a --with-float=hard
--with-fpu=crypto-neon-fp-armv8
Thread model: single
gcc version 4.10.0 20140624
---
Code generation Before:
foo:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, lr}
ldr r4, .L6
ldr r4, [r4]
lsls r4, r4, #29
it mi
addmi r2, r2, #1
bl bar
movs r0, #0
pop {r4, pc}
.
---
Code generation After:
foo:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, lr}
ldr r4, .L6
ldr r4, [r4]
tst r4, #4
it ne
addne r2, r2, #1
bl bar
movs r0, #0
pop {r4, pc}
---
The tst (immediate) instruction is a 4-byte thumb instruction, while lsls is a
2-byte thumb instruction.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
@ 2014-06-25 13:00 ` jgreenhalgh at gcc dot gnu.org
2014-06-25 13:05 ` ktietz at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jgreenhalgh at gcc dot gnu.org @ 2014-06-25 13:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
jgreenhalgh at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm*-none-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-06-25
CC| |jgreenhalgh at gcc dot gnu.org,
| |ktietz at gcc dot gnu.org
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
2014-06-25 13:00 ` [Bug rtl-optimization/61608] " jgreenhalgh at gcc dot gnu.org
@ 2014-06-25 13:05 ` ktietz at gcc dot gnu.org
2014-06-25 13:20 ` jgreenhalgh at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ktietz at gcc dot gnu.org @ 2014-06-25 13:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
--- Comment #1 from Kai Tietz <ktietz at gcc dot gnu.org> ---
Does this issue get fixed by adding the peephole2 also at old place too?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
2014-06-25 13:00 ` [Bug rtl-optimization/61608] " jgreenhalgh at gcc dot gnu.org
2014-06-25 13:05 ` ktietz at gcc dot gnu.org
@ 2014-06-25 13:20 ` jgreenhalgh at gcc dot gnu.org
2014-06-25 13:27 ` ktietz at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jgreenhalgh at gcc dot gnu.org @ 2014-06-25 13:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
--- Comment #2 from jgreenhalgh at gcc dot gnu.org ---
Yes, it does.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
` (2 preceding siblings ...)
2014-06-25 13:20 ` jgreenhalgh at gcc dot gnu.org
@ 2014-06-25 13:27 ` ktietz at gcc dot gnu.org
2014-06-25 13:52 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ktietz at gcc dot gnu.org @ 2014-06-25 13:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
--- Comment #3 from Kai Tietz <ktietz at gcc dot gnu.org> ---
Thanks for testing. I will sent a patch for it.
It seems after all that we need to run peephole2 pass twice.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
` (3 preceding siblings ...)
2014-06-25 13:27 ` ktietz at gcc dot gnu.org
@ 2014-06-25 13:52 ` rguenth at gcc dot gnu.org
2014-06-25 13:53 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-06-25 13:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Kai Tietz from comment #3)
> Thanks for testing. I will sent a patch for it.
> It seems after all that we need to run peephole2 pass twice.
Bad for compile-time.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
` (4 preceding siblings ...)
2014-06-25 13:52 ` rguenth at gcc dot gnu.org
@ 2014-06-25 13:53 ` rguenth at gcc dot gnu.org
2014-06-30 20:15 ` rth at gcc dot gnu.org
2014-08-06 14:40 ` jgreenhalgh at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-06-25 13:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.10.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
` (5 preceding siblings ...)
2014-06-25 13:53 ` rguenth at gcc dot gnu.org
@ 2014-06-30 20:15 ` rth at gcc dot gnu.org
2014-08-06 14:40 ` jgreenhalgh at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: rth at gcc dot gnu.org @ 2014-06-30 20:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
--- Comment #5 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Mon Jun 30 20:14:42 2014
New Revision: 212172
URL: https://gcc.gnu.org/viewcvs?rev=212172&root=gcc&view=rev
Log:
PR rtl-opt/61608
PR target/39284
* bb-reorder.c (pass_duplicate_computed_gotos::execute): Cleanup
the cfg if there were any changes.
* passes.def: Revert move of peephole2 after reorder_blocks;
move duplicate_computed_gotos before peephole2.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/bb-reorder.c
trunk/gcc/passes.def
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/61608] [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests
2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
` (6 preceding siblings ...)
2014-06-30 20:15 ` rth at gcc dot gnu.org
@ 2014-08-06 14:40 ` jgreenhalgh at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: jgreenhalgh at gcc dot gnu.org @ 2014-08-06 14:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61608
jgreenhalgh at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from jgreenhalgh at gcc dot gnu.org ---
This looks resolved to me.
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2014-08-06 14:40 UTC | newest]
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2014-06-25 12:57 [Bug rtl-optimization/61608] New: [4.10 regression] FAIL: gcc.target/arm/epilog-1.c scan-assembler tests jgreenhalgh at gcc dot gnu.org
2014-06-25 13:00 ` [Bug rtl-optimization/61608] " jgreenhalgh at gcc dot gnu.org
2014-06-25 13:05 ` ktietz at gcc dot gnu.org
2014-06-25 13:20 ` jgreenhalgh at gcc dot gnu.org
2014-06-25 13:27 ` ktietz at gcc dot gnu.org
2014-06-25 13:52 ` rguenth at gcc dot gnu.org
2014-06-25 13:53 ` rguenth at gcc dot gnu.org
2014-06-30 20:15 ` rth at gcc dot gnu.org
2014-08-06 14:40 ` jgreenhalgh at gcc dot gnu.org
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