[PATCH] D152745: [Docs] Update llvm-test-suite PGO instructions to use LLVM IR PGO by default

[Mingming Liu via Phabricator via llvm-commits]

mingmingl updated this revision to Diff 530664.
mingmingl retitled this revision from "[Docs]Mention DTEST_SUITE_USE_IR_PGO O explicitly for LLLVM IR PGO in llvm-test-suite PGO testing" to "[Docs] Update llvm-test-suite PGO instructions to use LLVM IR PGO by default".
mingmingl edited the summary of this revision.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152745/new/

https://reviews.llvm.org/D152745

Files:
  llvm/docs/TestSuiteGuide.md


Index: llvm/docs/TestSuiteGuide.md
===================================================================
--- llvm/docs/TestSuiteGuide.md
+++ llvm/docs/TestSuiteGuide.md
@@ -336,8 +336,9 @@
 
 Example:
 ```bash
-# Profile generation run:
+# Profile generation run using LLVM IR PGO:
 % cmake -DTEST_SUITE_PROFILE_GENERATE=ON \
+        -DTEST_SUITE_USE_IR_PGO=ON \
         -DTEST_SUITE_RUN_TYPE=train \
         ../test-suite
 % make
@@ -351,6 +352,8 @@
 % llvm-lit -o result.json .
 ```
 
+To use Clang frontend's PGO instead of LLVM IR PGO, set `-DTEST_SUITE_USE_IR_PGO=OFF`.
+
 The `TEST_SUITE_RUN_TYPE` setting only affects the SPEC benchmark suites.
 
 


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