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* [Bug target/108532] New: march used on the object but mcpu conflicts still produces an warning with LTO
@ 2023-01-24 21:46 pinskia at gcc dot gnu.org
2023-01-25 7:39 ` [Bug target/108532] " rguenth at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-01-24 21:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108532
Bug ID: 108532
Summary: march used on the object but mcpu conflicts still
produces an warning with LTO
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: diagnostic, lto
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Target: aarch64-linux-gnu
cat t.c
int main(void) {}
~/upstream-gcc/bin/gcc -c -flto -march=armv8.4-a t.c
~/upstream-gcc/bin/gcc t.o -flto -mcpu=generic
lto1: warning: switch ‘-mcpu=generic’ conflicts with ‘-march=armv8.4-a’ switch
lto1: warning: switch ‘-mcpu=generic’ conflicts with ‘-march=armv8.4-a’ switch
This is wrong.
gcc version 13.0.0 20220808 (experimental)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/108532] march used on the object but mcpu conflicts still produces an warning with LTO
2023-01-24 21:46 [Bug target/108532] New: march used on the object but mcpu conflicts still produces an warning with LTO pinskia at gcc dot gnu.org
@ 2023-01-25 7:39 ` rguenth at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-25 7:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108532
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
With streamable flags produced by the object files I wonder if it makes sense
to drop linker target arguments on the floor? (they'd be effectively ignored
anyway in some way)
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-01-25 7:39 UTC | newest]
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2023-01-24 21:46 [Bug target/108532] New: march used on the object but mcpu conflicts still produces an warning with LTO pinskia at gcc dot gnu.org
2023-01-25 7:39 ` [Bug target/108532] " rguenth at gcc dot gnu.org
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