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gh-160381: Show LLVM profile statistics after PGO training #160373

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Merged
itamaro merged 1 commit into from
Oct 23, 2026
+12 −0
Merged

gh-160381: Show LLVM profile statistics after PGO training #160373

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2 changes: 2 additions & 0 deletions Makefile.pre.in
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ GITBRANCH= @GITBRANCH@
PGO_PROF_GEN_FLAG=@PGO_PROF_GEN_FLAG@
PGO_PROF_USE_FLAG=@PGO_PROF_USE_FLAG@
LLVM_PROF_MERGER=@LLVM_PROF_MERGER@
LLVM_PROF_SHOW=@LLVM_PROF_SHOW@
LLVM_PROF_FILE=@LLVM_PROF_FILE@
LLVM_PROF_ERR=@LLVM_PROF_ERR@
DTRACE= @DTRACE@
Expand Down Expand Up @@ -849,6 +850,7 @@ profile-run-stamp:
@ # FIXME: can't run for a cross build
$(LLVM_PROF_FILE) $(RUNSHARED) ./$(BUILDPYTHON) $(PROFILE_TASK)
$(LLVM_PROF_MERGER)
$(LLVM_PROF_SHOW)
# Remove profile generation binary since we are done with it.
$(MAKE) clean-retain-profile
# This is an expensive target to build and it does not have proper
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4 changes: 4 additions & 0 deletions configure
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6 changes: 6 additions & 0 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -2099,6 +2099,7 @@ fi
AC_SUBST([PGO_PROF_GEN_FLAG])
AC_SUBST([PGO_PROF_USE_FLAG])
AC_SUBST([LLVM_PROF_MERGER])
AC_SUBST([LLVM_PROF_SHOW])
AC_SUBST([LLVM_PROF_FILE])
AC_SUBST([LLVM_PROF_ERR])
AC_SUBST([LLVM_PROFDATA])
Expand All @@ -2123,6 +2124,7 @@ then
fi
fi
LLVM_PROF_ERR=no
LLVM_PROF_SHOW=true
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case "$ac_cv_cc_name" in
clang|icx)
Expand All @@ -2135,6 +2137,10 @@ case "$ac_cv_cc_name" in
\"\$(shell pwd)\"/*.profclangr
")
LLVM_PROF_FILE="LLVM_PROFILE_FILE=\"\$(shell pwd)/code-%p.profclangr\""
LLVM_PROF_SHOW=m4_normalize("
${LLVM_PROFDATA} show --detailed-summary --topn=500
\"\$(shell pwd)/code.profclangd\"
")
if test $LLVM_PROF_FOUND = not-found
then
LLVM_PROF_ERR=yes
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