https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105856
Roger Sayle <roger at nextmovesoftware dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ice in emit_move_insn, at |[13 Regression] ice in
|expr.cc:4011 |emit_move_insn, at
| |expr.cc:4011
Assignee|unassigned at gcc dot gnu.org |roger at
nextmovesoftware dot com
CC| |roger at nextmovesoftware dot
com
Priority|P3 |P1
Version|12.0 |13.0
Status|UNCONFIRMED |ASSIGNED
Keywords| |ice-on-valid-code
Target Milestone|--- |13.0
Last reconfirmed| |2022-06-05
Target| |arm*
Ever confirmed|0 |1
--- Comment #2 from Roger Sayle <roger at nextmovesoftware dot com> ---
Mine. Sorry for the breakage. I've a fix that avoids the ICE on ARM, and
allows GCC to generate the following code for this testcase:
g_329_3:
mov r0, #6
b func_19
[i.e. the same code as without the #pragma pack(1)].
This is a big improvement on GCC v12 which generates
(both with and without #pragma pack(1)):
g_329_3:
movw r3, #:lower16:.LANCHOR0
movt r3, #:upper16:.LANCHOR0
ldr r0, [r3]
b func_19
I'm bootstrapping and regression testing on x86_64 now.
