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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
30 lines
829 B
LLVM
30 lines
829 B
LLVM
; Test to check the callgraph for call to alias in module.
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; RUN: opt -module-summary %s -o %t.o
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; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
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; CHECK: <GLOBALVAL_SUMMARY_BLOCK
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; CHECK-NEXT: <VERSION
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; CHECK-NEXT: <FLAGS
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; CHECK-NEXT: <PERMODULE {{.*}} op4=0 op5=0 op6=0 op7=[[ALIASID:[0-9]+]]/>
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; CHECK-NEXT: <PERMODULE {{.*}} op0=[[ALIASEEID:[0-9]+]]
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; CHECK-NEXT: <ALIAS {{.*}} op0=[[ALIASID]] {{.*}} op2=[[ALIASEEID]]/>
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; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
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; ModuleID = 'thinlto-alias2.ll'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @main() {
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entry:
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call void (...) @analias()
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ret i32 0
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}
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@analias = alias void (...), bitcast (void ()* @aliasee to void (...)*)
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define void @aliasee() #0 {
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entry:
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ret void
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}
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