llvm/test/Bitcode/summary_version.ll at 69d43aeac43838c7cfbb871af8109ce689f3f4d3 - llvm - Free-Git: DMCA Non-Compliant

RPCS3/llvm

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Eugene Leviant 69d43aeac4 [ThinLTO] Attempt to recommit r365040 after caching fix

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

2019-07-05 12:00:10 +00:00

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 ; Check summary versioning
 ; RUN: opt  -module-summary  %s -o - | llvm-bcanalyzer -dump | FileCheck %s
 ; CHECK: <GLOBALVAL_SUMMARY_BLOCK
 ; CHECK: <VERSION op0=7/>
 ; Need a function for the summary to be populated.
 define void @foo() {
     ret void
 }