Amir created this revision.
Amir added reviewers: phosek, beanz.
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`findFilesWithExtension` helper checks for `endswith(extension)` instead of
exactly matching the file extension. This causes it to match unrelated files,
for example, `.profdata` files while matching `.fdata` files:

http://157.230.108.44:8011/#/builders/56/builds/247

  Merging data from 
/worker/worker/bolt-x86_64-ubuntu-clang-bolt-gcc/build/tools/clang/prof.fdata.1124569.fdata...
  Merging data from 
/worker/worker/bolt-x86_64-ubuntu-clang-bolt-gcc/build/tools/clang/test/Frontend/Output/optimization-remark-with-hotness-new-pm.c.tmp.profdata...


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141342

Files:
  clang/utils/perf-training/perf-helper.py


Index: clang/utils/perf-training/perf-helper.py
===================================================================
--- clang/utils/perf-training/perf-helper.py
+++ clang/utils/perf-training/perf-helper.py
@@ -23,7 +23,7 @@
   filenames = []
   for root, dirs, files in os.walk(path): 
     for filename in files:
-      if filename.endswith(extension):
+      if os.path.splitext(filename)[1] == extension:
         filenames.append(os.path.join(root, filename))
   return filenames
 


Index: clang/utils/perf-training/perf-helper.py
===================================================================
--- clang/utils/perf-training/perf-helper.py
+++ clang/utils/perf-training/perf-helper.py
@@ -23,7 +23,7 @@
   filenames = []
   for root, dirs, files in os.walk(path): 
     for filename in files:
-      if filename.endswith(extension):
+      if os.path.splitext(filename)[1] == extension:
         filenames.append(os.path.join(root, filename))
   return filenames
 
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