[llvm] [BOLT] Add support for safe-icf (PR #116275)

[Amir Ayupov via llvm-commits]

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@@ -0,0 +1,98 @@
+## Check that BOLT handles correctly folding functions with --icf=safe that can be referenced by non-control flow instructions.
+## It invokes BOLT twice first testing CFG path, and second when functions have to be disassembled.
+
+# REQUIRES: system-linux
+# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t1.o
+# RUN: %clang %cflags %t1.o -o %t.exe -Wl,-q
+# RUN: llvm-bolt --no-threads %t.exe --icf -debug -debug-only=bolt-icf \
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aaupov wrote:

Drop `-debug` in this and other tests if you're only looking at ICF's debug log

https://github.com/llvm/llvm-project/pull/116275