https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101822
--- Comment #1 from Jeremy R. ---
Never mind, 101821 was invalid and the initial xor eax eax is by design (still
wondering whether this applies to new CPUs though). There is still a
discrepancy between this code and the __builtin_popcount code t
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84858
--- Comment #2 from Andrew Pinski ---
Seems fixed in GCC 8+.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101821
--- Comment #8 from Andrew Pinski ---
(In reply to Jeremy R. from comment #7)
> Does the false dependency still apply to modern CPUs?
How modern is modern?
Skylake fixed this for lzcnt and tzcnt.
Cannon Lake (and Ice Lake) fixed this for popcnt
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101822
Andrew Pinski changed:
What|Removed |Added
Keywords||missed-optimization
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101821
--- Comment #9 from Jeremy R. ---
Thank you for the resources and for your insight, it's much appreciated.
Is there interest in updating the intentional false-dependency logic to not
fire for architectures newer than cannonlake?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85237
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94497
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
--- Comment #7 from Andrew P
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101367
David Ledger changed:
What|Removed |Added
CC||davidledger at live dot com.au
--- Comme
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100611
--- Comment #4 from David Ledger ---
It still seems like a bug though.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101367
--- Comment #3 from Noah Watkins ---
Happy to work on providing a different reproducer if it is helpful.
This was the first smallish example we could create, and the `free of
an invalid pointer error` seemed as good enough as any unexpected
beha
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46352
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Known to work|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66909
--- Comment #3 from Andrew Pinski ---
Here is 4.7 backtrace:
t65.c:1:0: internal compiler error: Segmentation fault
0x7547af crash_signal
/bajas/pinskia/src/toolchain-47/scripts/../src/gcc/toplev.c:348
0xa55004 linemap_macro_map_lookup
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66909
Andrew Pinski changed:
What|Removed |Added
Keywords||ice-on-valid-code
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91008
--- Comment #3 from Andrew Pinski ---
Seems fixed in GCC 11+
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66363
Andrew Pinski changed:
What|Removed |Added
Keywords||ice-on-valid-code
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87624
Andrew Pinski changed:
What|Removed |Added
CC||pinskia at gcc dot gnu.org
Last reconf
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50316
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |DUPLICATE
Status|UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39856
Andrew Pinski changed:
What|Removed |Added
CC||ygepes at gmail dot com
--- Comment #12
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54821
Andrew Pinski changed:
What|Removed |Added
Target||Microblaze
Component|middle-end
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11925
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |3.4.0
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33725
Andrew Pinski changed:
What|Removed |Added
Keywords||missed-optimization
Severity|n
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33437
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |INVALID
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39783
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |INVALID
Status|UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39783
Andrew Pinski changed:
What|Removed |Added
Resolution|INVALID |WONTFIX
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40988
--- Comment #1 from Andrew Pinski ---
I suspect the inline-asm is broken, I am 90% sure of it.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40546
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |FIXED
Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80406
--- Comment #4 from Sean ---
Can confirm the warning no longer appears to issue (at least as of GCC 11).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43025
Andrew Pinski changed:
What|Removed |Added
See Also||https://sourceware.org/bugz
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101823
Bug ID: 101823
Summary: GCC generates the wrong string in the assembly code.
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Compon
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101823
--- Comment #1 from bootmgr at 163 dot com ---
Created attachment 51276
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51276&action=edit
test.cc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43035
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |4.7.0
Status|UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
--- Comment #4 from Andrew Pinski ---
Hmm, does the pragma happen before or after the attribute?
Because I don't get an ICE on any recent GCC but the code is all rejected.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44332
Andrew Pinski changed:
What|Removed |Added
Resolution|FIXED |DUPLICATE
--- Comment #5 from Andrew Pin
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47948
--- Comment #4 from Andrew Pinski ---
*** Bug 44332 has been marked as a duplicate of this bug. ***
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47948
Andrew Pinski changed:
What|Removed |Added
Status|NEW |RESOLVED
Target Milestone|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49480
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |4.7.0
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39258
--- Comment #4 from Andrew Pinski ---
union sse2 does not pass via a register for me on x86_64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101824
Bug ID: 101824
Summary: VOLATILE not honored
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assigne
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58124
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |7.0
--- Comment #1 from Andrew Pinski -
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62133
Andrew Pinski changed:
What|Removed |Added
Known to work||8.4.0, 8.5.0, 9.3.0
Keywords|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100782
--- Comment #6 from Sergei Trofimovich ---
Trying to understand why rejection happens: -fdump-rtl-all-slim 295r.reload
says:
Choosing alt 0 in insn 12: (0) =r (1) %0 (2) rI08
{*addsi3_compact_lra}
alt=0: No input/output
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