[llvm] [BOLT][test] Fix NFC check with pre-aggregated-perf.test (PR #113944)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/113944

NFC checks have been failing starting with
https://lab.llvm.org/buildbot/#/builders/92/builds/8567.

NFC testing wrapper (llvm-bolt-wrapper) replaces the call of `perf2bolt`
with `llvm-bolt --aggregate-only --ignore-build-id`.

`show-density` is automatically enabled for perf2bolt only but not for
`llvm-bolt --aggregate-only`. Add the flag to the test to work around
the issue.

Test Plan:
```
cd build
../llvm-project/bolt/utils/nfc-check-setup.py --switch-back --verbose
bin/llvm-lit -a tools/bolt/test/X86/pre-aggregated-perf.test
```


>From 63e1bde9cd222c6b48c54d3d20178cd9b2be7fc2 Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov at fb.com>
Date: Mon, 28 Oct 2024 11:27:55 -0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 bolt/test/X86/pre-aggregated-perf.test | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bolt/test/X86/pre-aggregated-perf.test b/bolt/test/X86/pre-aggregated-perf.test
index 3242ba22f59164..cf745ca7bf7b62 100644
--- a/bolt/test/X86/pre-aggregated-perf.test
+++ b/bolt/test/X86/pre-aggregated-perf.test
@@ -11,6 +11,7 @@ REQUIRES: system-linux
 
 RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
 RUN: perf2bolt %t.exe -o %t --pa -p %p/Inputs/pre-aggregated.txt -w %t.new \
+RUN:   --show-density \
 RUN:   --profile-density-threshold=9 --profile-density-cutoff-hot=970000 \
 RUN:   --profile-use-dfs | FileCheck %s --check-prefix=CHECK-P2B
 
@@ -18,6 +19,7 @@ CHECK-P2B: BOLT-INFO: 4 out of 7 functions in the binary (57.1%) have non-empty
 CHECK-P2B: BOLT-INFO: Functions with density >= 21.7 account for 97.00% total sample counts.
 
 RUN: perf2bolt %t.exe -o %t --pa -p %p/Inputs/pre-aggregated.txt -w %t.new \
+RUN:   --show-density \
 RUN:   --profile-density-cutoff-hot=970000 \
 RUN:   --profile-use-dfs 2>&1 | FileCheck %s --check-prefix=CHECK-WARNING