; "-debug-only" requires asserts.
; REQUIRES: asserts
; RUN: rm -rf %t && split-file %s %t && cd %t
; Generate per-module summaries.
; RUN: opt -module-summary main.ll -o main.bc
; RUN: opt -module-summary lib.ll -o lib.bc
; Generate the combined summary and distributed indices.
; - For function import, set 'import-instr-limit' to 7 and fall back to import
; function declarations.
; - In main.ll, function 'main' calls 'small_func' and 'large_func'. Both callees
; are defined in lib.ll. 'small_func' has two indirect callees, one is smaller
; and the other one is larger. Both callees of 'small_func' are defined in lib.ll.
; - Given the import limit, in main's combined summary, the import type of 'small_func'
; and 'small_indirect_callee' will be 'definition', and the import type of
; large* functions and their aliasees will be 'declaration'.
;
; The test will disassemble combined summaries and check the import type is
; correct. Right now postlink optimizer pipeline doesn't do anything (e.g.,
; import the declaration or de-serialize summary attributes yet) so there is
; nothing to test more than the summary content.
;
; TODO: Extend this test case to test IR once postlink optimizer makes use of
; the import type for declarations.
;
; RUN: llvm-lto2 run \
; RUN: -debug-only=function-import \
; RUN: -import-instr-limit=7 \
; RUN: -import-instr-evolution-factor=1.0 \
; RUN: -import-declaration \
; RUN: -thinlto-distributed-indexes \
; RUN: -r=main.bc,main,px \
; RUN: -r=main.bc,small_func, \
; RUN: -r=main.bc,large_func, \
; RUN: -r=lib.bc,callee,pl \
; RUN: -r=lib.bc,large_indirect_callee,px \
; RUN: -r=lib.bc,large_indirect_bar,px \
; RUN: -r=lib.bc,small_func,px \
; RUN: -r=lib.bc,large_func,px \
; RUN: -r=lib.bc,large_indirect_callee_alias,px \
; RUN: -r=lib.bc,large_indirect_bar_alias,px \
; RUN: -r=lib.bc,calleeAddrs,px -r=lib.bc,calleeAddrs2,px -o summary main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=DUMP
;
; RUN: llvm-lto -thinlto-action=thinlink -import-declaration -import-instr-limit=7 -import-instr-evolution-factor=1.0 -o combined.index.bc main.bc lib.bc
; RUN: llvm-lto -thinlto-action=distributedindexes -debug-only=function-import -import-declaration -import-instr-limit=7 -import-instr-evolution-factor=1.0 -thinlto-index combined.index.bc main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=DUMP
; DUMP: - 2 function definitions and 4 function declarations imported from lib.bc
; First disassemble per-module summary and find out the GUID for {large_func, large_indirect_callee}.
;
; RUN: llvm-dis lib.bc -o - | FileCheck %s --check-prefix=LIB-DIS
; LIB-DIS: module: (path: "lib.bc", hash: (0, 0, 0, 0, 0))
; LIB-DIS: gv: (name: "large_func", summaries: {{.*}}) ; guid = 2418497564662708935
; LIB-DIS: gv: (name: "large_indirect_bar_alias", summaries: {{.*}}, aliasee: [[LARGEINDIRECT_BAR:\^[0-9]+]]{{.*}}guid = 13590951773474913315
; LIB-DIS: [[LARGEINDIRECT_BAR]] = gv: (name: "large_indirect_bar", summaries: {{.*}}) ; guid = 13770917885399536773
; LIB-DIS: [[LARGEINDIRECT:\^[0-9]+]] = gv: (name: "large_indirect_callee", summaries: {{.*}}) ; guid = 14343440786664691134
; LIB-DIS: gv: (name: "large_indirect_callee_alias", summaries: {{.*}}, aliasee: [[LARGEINDIRECT]]{{.*}}guid = 16730173943625350469
;
; Secondly disassemble main's combined summary and verify the import type of
; these two GUIDs are declaration.
;
; RUN: llvm-dis main.bc.thinlto.bc -o - | FileCheck %s --check-prefix=MAIN-DIS
;
; MAIN-DIS: [[LIBMOD:\^[0-9]+]] = module: (path: "lib.bc", hash: (0, 0, 0, 0, 0))
; MAIN-DIS: gv: (guid: 2418497564662708935, summaries: (function: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), insts: 8, {{.*}})))
; When alias is imported as a copy of the aliasee, but the aliasee is not being
; imported by itself, the aliasee should be null.
; MAIN-DIS: gv: (guid: 13590951773474913315, summaries: (alias: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), aliasee: null)))
; MAIN-DIS: [[LARGEINDIRECT:\^[0-9]+]] = gv: (guid: 14343440786664691134, summaries: (function: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), insts: 8, {{.*}})))
; MAIN-DIS: gv: (guid: 16730173943625350469, summaries: (alias: (module: [[LIBMOD]], flags: ({{.*}} importType: declaration), aliasee: [[LARGEINDIRECT]])))
; Run in-process ThinLTO and tests that
; 1. `callee` remains internalized even if the symbols of its callers
; (large_func, large_indirect_callee, large_indirect_bar) are exported as
; declarations and visible to main module.
; 2. the debugging logs from `function-import` pass are expected.
; RUN: llvm-lto2 run \
; RUN: -debug-only=function-import \
; RUN: -save-temps \
; RUN: -thinlto-threads=1 \
; RUN: -import-instr-limit=7 \
; RUN: -import-instr-evolution-factor=1.0 \
; RUN: -import-declaration \
; RUN: -r=main.bc,main,px \
; RUN: -r=main.bc,small_func, \
; RUN: -r=main.bc,large_func, \
; RUN: -r=lib.bc,callee,pl \
; RUN: -r=lib.bc,large_indirect_callee,px \
; RUN: -r=lib.bc,large_indirect_bar,px \
; RUN: -r=lib.bc,small_func,px \
; RUN: -r=lib.bc,large_func,px \
; RUN: -r=lib.bc,large_indirect_callee_alias,px \
; RUN: -r=lib.bc,large_indirect_bar_alias,px \
; RUN: -r=lib.bc,calleeAddrs,px -r=lib.bc,calleeAddrs2,px -o in-process main.bc lib.bc 2>&1 | FileCheck %s --check-prefix=IMPORTDUMP
; TODO: Extend this test case to test IR once postlink optimizer makes use of
; the import type for declarations.
; IMPORTDUMP-DAG: Not importing function 11825436545918268459 callee from lib.cc
; IMPORTDUMP-DAG: Is importing function declaration 14343440786664691134 large_indirect_callee from lib.cc
; IMPORTDUMP-DAG: Is importing function definition 13568239288960714650 small_indirect_callee from lib.cc
; IMPORTDUMP-DAG: Is importing function definition 6976996067367342685 small_func from lib.cc
; IMPORTDUMP-DAG: Is importing function declaration 2418497564662708935 large_func from lib.cc
; IMPORTDUMP-DAG: Not importing global 7680325410415171624 calleeAddrs from lib.cc
; IMPORTDUMP-DAG: Is importing alias declaration 16730173943625350469 large_indirect_callee_alias from lib.cc
; IMPORTDUMP-DAG: Is importing alias declaration 13590951773474913315 large_indirect_bar_alias from lib.cc
; IMPORTDUMP-DAG: Not importing function 13770917885399536773 large_indirect_bar
; RUN: llvm-dis in-process.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT
; RUN: llvm-dis in-process.2.2.internalize.bc -o - | FileCheck %s --check-prefix=INTERNALIZE
; IMPORT-DAG: define available_externally void @small_func
; IMPORT-DAG: define available_externally hidden void @small_indirect_callee
; IMPORT-DAG: declare void @large_func
; IMPORT-NOT: large_indirect_callee
; IMPORT-NOT: large_indirect_callee_alias
; IMPORT-NOT: large_indirect_bar
; IMPORT-NOT: large_indirect_bar_alias
; INTERNALIZE: define internal void @callee()
;--- main.ll
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define i32 @main() {
call void @small_func()
call void @large_func()
ret i32 0
}
declare void @small_func()
; large_func without attributes
declare void @large_func()
;--- lib.ll
source_filename = "lib.cc"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Both large_indirect_callee and large_indirect_callee_alias are referenced
; and visible to main.ll.
@calleeAddrs = global [3 x ptr] [ptr @large_indirect_callee, ptr @small_indirect_callee, ptr @large_indirect_callee_alias]
; large_indirect_bar_alias is visible to main.ll but its aliasee isn't.
@calleeAddrs2 = global [1 x ptr] [ptr @large_indirect_bar_alias]
define void @callee() #1 {
ret void
}
define void @large_indirect_callee()#2 {
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
ret void
}
define void @large_indirect_bar()#2 {
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
ret void
}
define internal void @small_indirect_callee() #0 {
entry:
%0 = load ptr, ptr @calleeAddrs2
call void %0(), !prof !3
ret void
}
@large_indirect_callee_alias = alias void(), ptr @large_indirect_callee
@large_indirect_bar_alias = alias void(), ptr @large_indirect_bar
define void @small_func() {
entry:
%0 = load ptr, ptr @calleeAddrs
call void %0(), !prof !0
%1 = load ptr, ptr getelementptr inbounds ([3 x ptr], ptr @calleeAddrs, i64 0, i64 1)
call void %1(), !prof !1
%2 = load ptr, ptr getelementptr inbounds ([3 x ptr], ptr @calleeAddrs, i64 0, i64 2)
call void %2(), !prof !2
ret void
}
define void @large_func() #0 {
entry:
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
call void @callee()
ret void
}
attributes #0 = { nounwind norecurse }
attributes #1 = { noinline }
attributes #2 = { norecurse }
!0 = !{!"VP", i32 0, i64 1, i64 14343440786664691134, i64 1}
!1 = !{!"VP", i32 0, i64 1, i64 13568239288960714650, i64 1}
!2 = !{!"VP", i32 0, i64 1, i64 16730173943625350469, i64 1}
!3 = !{!"VP", i32 0, i64 1, i64 13590951773474913315, i64 1}
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