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* [Bug target/89604] Type conversion from signed char to a wider integer generates wrong assembly for ARM,
[not found] <bug-89604-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-18 1:22 ` pinskia at gcc dot gnu.org
2021-08-18 13:52 ` rearnsha at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-18 1:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89604
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mlwmohawk at gmail dot com
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 101953 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/89604] Type conversion from signed char to a wider integer generates wrong assembly for ARM,
[not found] <bug-89604-4@http.gcc.gnu.org/bugzilla/>
2021-08-18 1:22 ` [Bug target/89604] Type conversion from signed char to a wider integer generates wrong assembly for ARM, pinskia at gcc dot gnu.org
@ 2021-08-18 13:52 ` rearnsha at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: rearnsha at gcc dot gnu.org @ 2021-08-18 13:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89604
--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
For the record, the choice of unsigned for the default char type dates back to
the original Arm architecture, which only had unsigned byte load instructions
(and sign-extending values required two further instructions - a left shift
followed by an arithmetic right shift). Even with the current architecture the
A32 unsigned byte load instructions are more flexible than the signed byte load
instructions.
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-89604-4@http.gcc.gnu.org/bugzilla/>
2021-08-18 1:22 ` [Bug target/89604] Type conversion from signed char to a wider integer generates wrong assembly for ARM, pinskia at gcc dot gnu.org
2021-08-18 13:52 ` rearnsha at gcc dot gnu.org
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