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llvm-mirror/test/ThinLTO/X86/distributed_indexes.ll
Teresa Johnson 91ec4ddcd7 [ThinLTO] Fix printing of aliases for distributed backend indexes
Summary:
When we import an alias (which will import a copy of the aliasee), but
aren't going to import the aliasee directly, the distributed backend
index will not contain the aliasee summary. Handle this in the summary
assembly printer by printing "null" as the aliasee.

Reviewers: davidxl, dexonsmith

Subscribers: mehdi_amini, inglorion, eraman, steven_wu, llvm-commits

Differential Revision: https://reviews.llvm.org/D48699

llvm-svn: 336160
2018-07-03 01:11:43 +00:00

58 lines
2.6 KiB
LLVM

; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/distributed_indexes.ll -o %t2.bc
; RUN: llvm-lto -thinlto-action=thinlink -o %t.index.bc %t1.bc %t2.bc
; RUN: llvm-lto -thinlto-action=distributedindexes -thinlto-index %t.index.bc %t1.bc %t2.bc
; RUN: llvm-bcanalyzer -dump %t1.bc.thinlto.bc | FileCheck %s --check-prefix=BACKEND1
; RUN: llvm-bcanalyzer -dump %t2.bc.thinlto.bc | FileCheck %s --check-prefix=BACKEND2
; The backend index for this module contains summaries from itself and
; Inputs/distributed_indexes.ll, as it imports from the latter.
; We should import @g and alias @analias. While we don't import the aliasee
; directly (and therefore don't have a third COMBINED record from module
; id 1), we will have a VALUE_GUID for it (hence the 4 VALUE_GUID entries).
; BACKEND1: <MODULE_STRTAB_BLOCK
; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}distributed_indexes.ll.tmp{{.*}}.bc'
; BACKEND1-NEXT: <ENTRY {{.*}} record string = '{{.*}}distributed_indexes.ll.tmp{{.*}}.bc'
; BACKEND1-NEXT: </MODULE_STRTAB_BLOCK
; BACKEND1-NEXT: <GLOBALVAL_SUMMARY_BLOCK
; BACKEND1-NEXT: <VERSION
; BACKEND1-DAG: <VALUE_GUID op0={{.*}} op1=-5751648690987223394
; BACKEND1-DAG: <VALUE_GUID op0={{.*}} op1=-5300342847281564238
; BACKEND1-DAG: <VALUE_GUID op0={{.*}} op1=-3706093650706652785
; BACKEND1-DAG: <VALUE_GUID op0={{.*}} op1=-1039159065113703048
; BACKEND1-DAG: <COMBINED {{.*}} op1=0
; BACKEND1-DAG: <COMBINED {{.*}} op1=1
; BACKEND1-DAG: <COMBINED_ALIAS {{.*}} op1=1
; BACKEND1-NEXT: </GLOBALVAL_SUMMARY_BLOCK
; The backend index for Input/distributed_indexes.ll contains summaries from
; itself only, as it does not import anything.
; BACKEND2: <MODULE_STRTAB_BLOCK
; BACKEND2-NEXT: <ENTRY {{.*}} record string = '{{.*}}distributed_indexes.ll.tmp2.bc'
; BACKEND2-NEXT: </MODULE_STRTAB_BLOCK
; BACKEND2-NEXT: <GLOBALVAL_SUMMARY_BLOCK
; BACKEND2-NEXT: <VERSION
; BACKEND2-DAG: <VALUE_GUID op0={{.*}} op1=-5751648690987223394/>
; BACKEND2-DAG: <VALUE_GUID op0={{.*}} op1=-5300342847281564238/>
; BACKEND2-DAG: <VALUE_GUID op0={{.*}} op1=-1039159065113703048/>
; BACKEND2-NEXT: <COMBINED
; BACKEND2-NEXT: <COMBINED
; BACKEND2-NEXT: <COMBINED_ALIAS
; BACKEND2-NEXT: </GLOBALVAL_SUMMARY_BLOCK
; Make sure that when the alias is imported as a copy of the aliasee, but the
; aliasee is not being imported by itself, that we can still print the summary.
; The aliasee should be "null".
; RUN: llvm-dis %t1.bc.thinlto.bc -o - | FileCheck %s --check-prefix=DIS
; DIS: aliasee: null
declare void @g(...)
declare void @analias(...)
define void @f() {
entry:
call void (...) @g()
call void (...) @analias()
ret void
}