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llvm-project/llvm/test/ThinLTO/X86/export.ll

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[ThinLTO] Thin link efficiency improvement: don't re-export globals (NFC) Summary: We were reinvoking exportGlobalInModule numerous times redundantly. No need to re-export globals referenced by a global that was already imported from its module. This resulted in a large speedup in the thin link for a big application, particularly when importing aggressiveness was cranked up. Reviewers: mehdi_amini Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27687 llvm-svn: 289896
2016-12-16 07:50:06 +08:00
; Do setup work for all below tests: generate bitcode and combined index
; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/export.ll -o %t2.bc
; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t1.bc %t2.bc
; Ensure statics are promoted/renamed correctly from this file.
; RUN: llvm-lto -thinlto-action=promote %t1.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s
Make GlobalValues with non-default visibilility dso_local. This is similar to r322317, but for visibility. It is not as neat because we have to special case extern_weak. The idea is the same as the previous change, make the transition to explicit dso_local easier for the frontends. With this they only have to add dso_local to symbols where we need some external information to decide if it is dso_local (like it being part of an ELF executable). llvm-svn: 322806
2018-01-18 10:08:23 +08:00
; CHECK-DAG: @staticvar.llvm.0 = hidden global
; CHECK-DAG: define hidden void @staticfunc.llvm.0
[ThinLTO] Thin link efficiency improvement: don't re-export globals (NFC) Summary: We were reinvoking exportGlobalInModule numerous times redundantly. No need to re-export globals referenced by a global that was already imported from its module. This resulted in a large speedup in the thin link for a big application, particularly when importing aggressiveness was cranked up. Reviewers: mehdi_amini Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27687 llvm-svn: 289896
2016-12-16 07:50:06 +08:00
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.11.0"
@staticvar = internal global i32 1, align 4
define void @callstaticfunc() #0 {
entry:
call void @staticfunc()
ret void
}
define internal void @staticfunc() #0 {
entry:
%0 = load i32, i32* @staticvar, align 4
ret void
}