https://bugs.kde.org/show_bug.cgi?id=456200
Bug ID: 456200
Summary: Valgrind should not required neon (simd) on armhf
Product: valgrind
Version: 3.20 GIT
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: ma...@debian.org
Target Milestone: ---
SUMMARY
valgrind is currently configured to build with: -mcpu=cortex-a8
Since gcc-11 (and above) this means the compiler is free to include simd (neon)
instruction. Since neon is not stricly required to run valgrind on armhf,
please reduce requirement.
STEPS TO REPRODUCE
% git clone
% ./autogen.sh && ./configure && make
% ./vg-in-place
Illegal instruction.
OBSERVED RESULT
neon instructions is present in the binaries.
Program received signal SIGILL, Illegal instruction.
vgPlain_am_startup (sp_at_startup=3204445696) at
m_aspacemgr/aspacemgr-linux.c:1626
1626 init_nsegment(&seg);
(gdb) x/i $pc
=> 0x58071090 <vgPlain_am_startup+20>: vmov.i32 d16, #0 ; 0x00000000
EXPECTED RESULT
valgrind should run on neon-less armhf.
SOFTWARE/OS VERSIONS
% cat /proc/cpuinfo
model name : ARMv7 Processor rev 2 (v7l)
Features : half thumb fastmult vfp edsp thumbee vfpv3 tls idiva idivt
vfpd32 lpae
ADDITIONAL INFORMATION
Complete thread on valgrind-users
https://sourceforge.net/p/valgrind/mailman/valgrind-users/thread/CA%2B7wUsyP0aTmfQMi3ro0AeXvRW8v2G1UYsLoFxpvi_RCUrbdJQ%40mail.gmail.com/#msg37673816
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