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* [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu
@ 2015-07-03 9:09 julia.koval at intel dot com
2015-07-03 9:17 ` [Bug target/66749] " julia.koval at intel dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: julia.koval at intel dot com @ 2015-07-03 9:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749
Bug ID: 66749
Summary: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge
array index into one instruction with -m32 -mregparm=3
or with -miamcu
Product: gcc
Version: 4.9.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: julia.koval at intel dot com
Target Milestone: ---
The test tries to generate code for:
return a[i+1] + b[i+1];
For -m32 gcc generates proper code:
movl 4(%esp), %eax
movsbl a+1(%eax), %ecx
movsbl b+1(%eax), %eax
addl %ecx, %eax
However with -m32 -mregparm=3 the b value fails to be combined:
movsbl a+1(%eax), %edx
incl %eax
movsbl b(%eax), %eax
addl %edx, %eax
The error also remains with -mregparm=1/2 or with -miamcu.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com @ 2015-07-03 9:17 ` julia.koval at intel dot com 2015-07-03 12:53 ` hjl.tools at gmail dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: julia.koval at intel dot com @ 2015-07-03 9:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749 --- Comment #1 from Yulia Koval <julia.koval at intel dot com> --- Reproduce: ./gcc -Bgcc addr-sel-1.c -O2 -m32 -mregparm=3 -mtune=i686 -S -o addr-sel-1.s -mtune=i686 is dg-option of the test. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com 2015-07-03 9:17 ` [Bug target/66749] " julia.koval at intel dot com @ 2015-07-03 12:53 ` hjl.tools at gmail dot com 2015-07-03 13:59 ` hjl.tools at gmail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2015-07-03 12:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hjl.tools at gmail dot com Version|4.9.3 |6.0 Target Milestone|--- |6.0 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com 2015-07-03 9:17 ` [Bug target/66749] " julia.koval at intel dot com 2015-07-03 12:53 ` hjl.tools at gmail dot com @ 2015-07-03 13:59 ` hjl.tools at gmail dot com 2015-07-06 8:24 ` julia.koval at intel dot com 2015-07-06 15:53 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2015-07-03 13:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749 --- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- Created attachment 35904 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35904&action=edit A patch Please try this. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com ` (2 preceding siblings ...) 2015-07-03 13:59 ` hjl.tools at gmail dot com @ 2015-07-06 8:24 ` julia.koval at intel dot com 2015-07-06 15:53 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: julia.koval at intel dot com @ 2015-07-06 8:24 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749 --- Comment #5 from Yulia Koval <julia.koval at intel dot com> --- (In reply to H.J. Lu from comment #4) > Created attachment 35904 [details] > A patch > > Please try this. It fixes the problem. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com ` (3 preceding siblings ...) 2015-07-06 8:24 ` julia.koval at intel dot com @ 2015-07-06 15:53 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2015-07-06 15:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> --- Fixed for GCC 6. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-07-06 15:53 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-07-03 9:09 [Bug target/66749] New: [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu julia.koval at intel dot com 2015-07-03 9:17 ` [Bug target/66749] " julia.koval at intel dot com 2015-07-03 12:53 ` hjl.tools at gmail dot com 2015-07-03 13:59 ` hjl.tools at gmail dot com 2015-07-06 8:24 ` julia.koval at intel dot com 2015-07-06 15:53 ` hjl.tools at gmail dot com
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