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[ThinLTO] Attempt to recommit r365040 after caching fix

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It's possible that some function can load and store the same
variable using the same constant expression:

store %Derived* @foo, %Derived** bitcast (%Base** @bar to %Derived**)
%42 = load %Derived*, %Derived** bitcast (%Base** @bar to %Derived**)

The bitcast expression was mistakenly cached while processing loads,
and never examined later when processing store. This caused @bar to
be mistakenly treated as read-only variable. See load-store-caching.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365188 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eugene Leviant
2019-07-05 12:00:10 +00:00
parent 1fa2d68de3
commit 69d43aeac4
28 changed files with 593 additions and 190 deletions
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test/Bitcode/thinlto-function-summary-callgraph.ll
+1 -1
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@@ -34,7 +34,7 @@
; COMBINED-NEXT: <VALUE_GUID
; COMBINED-NEXT: <COMBINED
; See if the call to func is registered.
; COMBINED-NEXT: <COMBINED {{.*}} op8=[[FUNCID]]/>
; COMBINED-NEXT: <COMBINED {{.*}} op9=[[FUNCID]]/>
; COMBINED-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
; ModuleID = 'thinlto-function-summary-callgraph.ll'