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[ThinLTO] Compute synthetic function entry count

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Summary:
This patch computes the synthetic function entry count on the whole
program callgraph (based on module summary) and writes the entry counts
to the summary. After function importing, this count gets attached to
the IR as metadata. Since it adds a new field to the summary, this bumps
up the version.

Reviewers: tejohnson

Subscribers: mehdi_amini, inglorion, llvm-commits

Differential Revision: https://reviews.llvm.org/D43521

llvm-svn: 349076
This commit is contained in:
Easwaran Raman
2018-12-13 19:54:27 +00:00
parent 8fb4b5dbb4
commit 8482e48d19
24 changed files with 293 additions and 34 deletions
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2
test/Bitcode/thinlto-function-summary-callgraph.ll
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@@ -33,7 +33,7 @@
; COMBINED-NEXT: <VALUE_GUID
; COMBINED-NEXT: <COMBINED
; See if the call to func is registered.
; COMBINED-NEXT: <COMBINED {{.*}} op7=[[FUNCID]]/>
; COMBINED-NEXT: <COMBINED {{.*}} op8=[[FUNCID]]/>
; COMBINED-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
; ModuleID = 'thinlto-function-summary-callgraph.ll'