[llvm] [BOLT][AArch64] Reduce the number of ADR relaxations (PR #111577)

[Davide Italiano via llvm-commits]

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+## Check that llvm-bolt will unnecessarily relax ADR instruction.
+## ADR below references containing function that is split. But ADR is always
+## in the main fragment, thus there is no need to relax it.
+
+# RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown %s -o %t.o
+# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -static
+# RUN: llvm-bolt %t.exe -o %t.bolt --split-functions --split-strategy=randomN \
+# RUN:   2>&1 | FileCheck %s
+# RUN: llvm-objdump -d --disassemble-symbols=_start %t.bolt | FileCheck %s
+
+# CHECK-NOT: adrp
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dcci wrote:

can we dump the whole function (or some context?) that way we can make the test more robust.

https://github.com/llvm/llvm-project/pull/111577