llvm-mirror/test/Bitcode/thinlto-alias2.ll
Teresa Johnson 7c2fc64206 [ThinLTO] Record calls to aliases
Summary:
When there is a call to an alias in the same module, we were not
adding a call edge. So we could incorrectly think that the alias
was dead if it was inlined in that function, despite having a
reference imported elsewhere. This resulted in unsats at link time.

Add a call edge when the call is to an alias.

Reviewers: davide, mehdi_amini

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25384

llvm-svn: 283664
2016-10-08 16:11:42 +00:00

29 lines
793 B
LLVM

; Test to check the callgraph for call to alias in module.
; RUN: opt -module-summary %s -o %t.o
; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
; CHECK: <GLOBALVAL_SUMMARY_BLOCK
; CHECK-NEXT: <VERSION
; CHECK-NEXT: <PERMODULE {{.*}} op3=0 op4=[[ALIASID:[0-9]+]]/>
; CHECK-NEXT: <PERMODULE {{.*}} op0=[[ALIASEEID:[0-9]+]]
; CHECK-NEXT: <ALIAS {{.*}} op0=[[ALIASID]] {{.*}} op2=[[ALIASEEID]]/>
; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
; ModuleID = 'thinlto-alias2.ll'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define i32 @main() {
entry:
call void (...) @analias()
ret i32 0
}
@analias = alias void (...), bitcast (void ()* @aliasee to void (...)*)
define void @aliasee() #0 {
entry:
ret void
}