================
@@ -100,6 +102,13 @@ static cl::opt<bool> EnableSSPCanaryBitInTB(
"aix-ssp-tb-bit", cl::init(false),
cl::desc("Enable Passing SSP Canary info in Trackback on AIX"),
cl::Hidden);
+static cl::list<std::string> IFuncLocal(
+ "ifunc-local",
----------------
w2yehia wrote:
@mandlebug please see latest version of TOCRestoreNeededForCallToImplementation.
I changed the walker to return a tristate: IsLocal (all are provably local),
IsPreemptible (at least one is provably preemptible), and Unknown (a mix of
provablty local and unknown structure).
I added a false-by-default flag `-mllvm -ifunc-local-if-proven` to control the
bias. By default, the bias is local unless proven preemptible. I thought some
users might not be comfortable with this as it might lead to silent bad
behavior, so they can opt-out by using that flag.
Once we agree that this is an acceptable approach, I'll add a note under the
ifunc attribute documentation.
https://github.com/llvm/llvm-project/pull/153049
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