[valgrind] [Bug 476465] AArch64 ARMv8.3 LDAPR/LDAPRH/LDAPRB instructions not supported

2023-12-11 Thread Arne Juul
https://bugs.kde.org/show_bug.cgi?id=476465 --- Comment #7 from Arne Juul --- >From the ARM docs all the still-missing instructions are only available with extra feature flags FEAT_LRCPC2 or FEAT_LRCPC3, so they are probably not as important. Someone familiar with how the "normal&quo

[valgrind] [Bug 476465] AArch64 ARMv8.3 LDAPR/LDAPRH/LDAPRB instructions not supported

2023-11-29 Thread Arne Juul
https://bugs.kde.org/show_bug.cgi?id=476465 --- Comment #5 from Arne Juul --- on RHEL8 (or almalinux 8.9 in my case) this is easily triggered by installing gcc-toolset-13 and compiling this C++ program: #include const char * my_getenv_once() { static const char * value = getenv("MY

[valgrind] [Bug 476465] AArch64 ARMv8.3 LDAPR/LDAPRH/LDAPRB instructions not supported

2023-11-29 Thread Arne Juul
https://bugs.kde.org/show_bug.cgi?id=476465 --- Comment #4 from Arne Juul --- after upgrading to GCC 13 we're seeing that the compiler generates LDAPR instructions for simple code when "RCpc" extension is enabled, as described here: https://community.arm.com/arm-community-blogs/b

[valgrind] [Bug 476465] AArch64 ARMv8.3 LDAPR/LDAPRH/LDAPRB instructions not supported

2023-11-29 Thread Arne Juul
https://bugs.kde.org/show_bug.cgi?id=476465 Arne Juul changed: What|Removed |Added CC||ar...@vespa.ai --- Comment #3 from Arne Juul