tnfchris added inline comments.
================
Comment at: clang/lib/Driver/ToolChains/Clang.cpp:3460
+ } else if (EffectiveTriple.isArm() || EffectiveTriple.isThumb()) {
+ CmdArgs.push_back("-mstack-probe-size=1024");
+ }
----------------
efriedma wrote:
> Why 1024?
1024 was experimentally determined by Arm and is part of the ABI for stack
clash (which has not yet been published). It was determined by examining a
large number of programs and looking at the function stack usages. 1024 covers
80-90% of programs such that we can minimize the number of probes required in
the average cases.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D154911/new/
https://reviews.llvm.org/D154911
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
