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llvm-mirror/test/tools/llvm-lto/thinlto.ll
Hiroshi Yamauchi 9896d761e8 [ThinLTO] Compute the basic block count across modules.
Summary:
Count the per-module number of basic blocks when the module summary is computed
and sum them up during Thin LTO indexing.

This is used to estimate the working set size under the partial sample PGO.

This is split off of D79831.

Reviewers: davidxl, espindola

Subscribers: emaste, inglorion, hiraditya, MaskRay, steven_wu, dexonsmith, arphaman, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D80403
2020-05-28 10:33:05 -07:00

28 lines
1.0 KiB
LLVM

; Test combined function index generation for ThinLTO via llvm-lto.
; RUN: opt -module-summary %s -o %t.o
; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o
; RUN: llvm-lto -thinlto -o %t3 %t.o %t2.o
; RUN: llvm-bcanalyzer -dump %t3.thinlto.bc | FileCheck %s --check-prefix=COMBINED
; RUN: not test -e %t3
; COMBINED: <MODULE_STRTAB_BLOCK
; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
; COMBINED-NEXT: </MODULE_STRTAB_BLOCK
; COMBINED-NEXT: <GLOBALVAL_SUMMARY_BLOCK
; COMBINED-NEXT: <VERSION
; COMBINED-NEXT: <FLAGS
; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
; COMBINED-NEXT: <COMBINED
; COMBINED-NEXT: <COMBINED
; COMBINED-NEXT: <BLOCK_COUNT op0=2/>
; COMBINED-NEXT: </GLOBALVAL_SUMMARY_BLOCK
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f() {
entry:
ret void
}