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

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[ThinLTO] Add option to emit imports files for distributed backends Summary: Add support for emission of plaintext lists of the imported files for each distributed backend compilation. Used for distributed build file staging. Invoked with new gold-plugin thinlto-emit-imports-files option, which is only valid with thinlto-index-only (i.e. for distributed builds), or from llvm-lto with new -thinlto-action=emitimports value. Depends on D19556. Reviewers: joker.eph Subscribers: llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19636 llvm-svn: 269067
2016-05-10 23:54:09 +08:00
; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/emit_imports.ll -o %t2.bc
[ThinLTO] Always emit a summary when compiling in ThinLTO mode Summary: Emit an empty summary section, instead of no summary section, when there are no global variables in the index. This ensures that LTO will treat these files as ThinLTO inputs, instead of as regular LTO inputs. In addition to not being what the user likely intended when compiling with -flto=thin, the current behavior is problematic for distributed build systems that expect to get ThinLTO index and imports files back for each input compiled with -flto=thin. Combining into a single regular LTO module also reduces the backend parallelism. And in the case where the index was suppressed due to uses in inline assembly, combining into a single LTO module could provoke renaming of duplicates that we were trying to prevent by suppressing the index. This change required a couple of fixes to handle the empty summary section. Reviewers: mehdi_amini Subscribers: mehdi_amini, llvm-commits, pcc Differential Revision: https://reviews.llvm.org/D24779 llvm-svn: 282037
2016-09-21 07:07:17 +08:00
; Include a file with an empty module summary index, to ensure that the expected
; output files are created regardless, for a distributed build system.
; RUN: opt -module-summary %p/Inputs/empty.ll -o %t3.bc
; RUN: rm -f %t3.bc.imports
; RUN: llvm-lto -thinlto-action=thinlink -o %t.index.bc %t1.bc %t2.bc %t3.bc
; RUN: llvm-lto -thinlto-action=emitimports -thinlto-index %t.index.bc %t1.bc %t2.bc %t3.bc
[ThinLTO] Add option to emit imports files for distributed backends Summary: Add support for emission of plaintext lists of the imported files for each distributed backend compilation. Used for distributed build file staging. Invoked with new gold-plugin thinlto-emit-imports-files option, which is only valid with thinlto-index-only (i.e. for distributed builds), or from llvm-lto with new -thinlto-action=emitimports value. Depends on D19556. Reviewers: joker.eph Subscribers: llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19636 llvm-svn: 269067
2016-05-10 23:54:09 +08:00
; The imports file for this module contains the bitcode file for
; Inputs/emit_imports.ll
; RUN: cat %t1.bc.imports | count 1
; RUN: cat %t1.bc.imports | FileCheck %s --check-prefix=IMPORTS1
; IMPORTS1: emit_imports.ll.tmp2.bc
; The imports file for Input/emit_imports.ll is empty as it does not import anything.
; RUN: cat %t2.bc.imports | count 0
[ThinLTO] Always emit a summary when compiling in ThinLTO mode Summary: Emit an empty summary section, instead of no summary section, when there are no global variables in the index. This ensures that LTO will treat these files as ThinLTO inputs, instead of as regular LTO inputs. In addition to not being what the user likely intended when compiling with -flto=thin, the current behavior is problematic for distributed build systems that expect to get ThinLTO index and imports files back for each input compiled with -flto=thin. Combining into a single regular LTO module also reduces the backend parallelism. And in the case where the index was suppressed due to uses in inline assembly, combining into a single LTO module could provoke renaming of duplicates that we were trying to prevent by suppressing the index. This change required a couple of fixes to handle the empty summary section. Reviewers: mehdi_amini Subscribers: mehdi_amini, llvm-commits, pcc Differential Revision: https://reviews.llvm.org/D24779 llvm-svn: 282037
2016-09-21 07:07:17 +08:00
; The imports file for Input/empty.ll is empty but should exist.
; RUN: cat %t3.bc.imports | count 0
[ThinLTO][X86] Fix windows build Windows 'rm' complains about non-existent files if a wildcard is used. Be more explicit about the files deleted to avoid this. llvm-svn: 279426
2016-08-22 18:49:37 +08:00
; RUN: rm -f %t1.thinlto.bc %t1.bc.imports
; RUN: rm -f %t2.thinlto.bc %t2.bc.imports
[ThinLTO] Always emit a summary when compiling in ThinLTO mode Summary: Emit an empty summary section, instead of no summary section, when there are no global variables in the index. This ensures that LTO will treat these files as ThinLTO inputs, instead of as regular LTO inputs. In addition to not being what the user likely intended when compiling with -flto=thin, the current behavior is problematic for distributed build systems that expect to get ThinLTO index and imports files back for each input compiled with -flto=thin. Combining into a single regular LTO module also reduces the backend parallelism. And in the case where the index was suppressed due to uses in inline assembly, combining into a single LTO module could provoke renaming of duplicates that we were trying to prevent by suppressing the index. This change required a couple of fixes to handle the empty summary section. Reviewers: mehdi_amini Subscribers: mehdi_amini, llvm-commits, pcc Differential Revision: https://reviews.llvm.org/D24779 llvm-svn: 282037
2016-09-21 07:07:17 +08:00
; RUN: rm -f %t3.bc.thinlto.bc %t3.bc.imports
; RUN: llvm-lto2 %t1.bc %t2.bc %t3.bc -o %t.o -save-temps \
[LTO] Add the ability to test -thinlto-emit-imports-files through llvm-lto2 Summary: Start bringing llvm-lto2 to a level where we can test the LTO API a bit deeper. Reviewers: tejohnson Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23681 llvm-svn: 279349
2016-08-20 07:54:40 +08:00
; RUN: -thinlto-distributed-indexes \
; RUN: -r=%t1.bc,g, \
; RUN: -r=%t1.bc,f,px \
; RUN: -r=%t2.bc,g,px
; RUN: cat %t1.bc.imports | count 1
; RUN: cat %t1.bc.imports | FileCheck %s --check-prefix=IMPORTS1
; The imports file for Input/emit_imports.ll is empty as it does not import anything.
; RUN: cat %t2.bc.imports | count 0
[ThinLTO] Always emit a summary when compiling in ThinLTO mode Summary: Emit an empty summary section, instead of no summary section, when there are no global variables in the index. This ensures that LTO will treat these files as ThinLTO inputs, instead of as regular LTO inputs. In addition to not being what the user likely intended when compiling with -flto=thin, the current behavior is problematic for distributed build systems that expect to get ThinLTO index and imports files back for each input compiled with -flto=thin. Combining into a single regular LTO module also reduces the backend parallelism. And in the case where the index was suppressed due to uses in inline assembly, combining into a single LTO module could provoke renaming of duplicates that we were trying to prevent by suppressing the index. This change required a couple of fixes to handle the empty summary section. Reviewers: mehdi_amini Subscribers: mehdi_amini, llvm-commits, pcc Differential Revision: https://reviews.llvm.org/D24779 llvm-svn: 282037
2016-09-21 07:07:17 +08:00
; The imports file for Input/empty.ll is empty but should exist.
; RUN: cat %t3.bc.imports | count 0
; The index file should be created even for the input with an empty summary.
; RUN: ls %t3.bc.thinlto.bc
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
[ThinLTO] Add option to emit imports files for distributed backends Summary: Add support for emission of plaintext lists of the imported files for each distributed backend compilation. Used for distributed build file staging. Invoked with new gold-plugin thinlto-emit-imports-files option, which is only valid with thinlto-index-only (i.e. for distributed builds), or from llvm-lto with new -thinlto-action=emitimports value. Depends on D19556. Reviewers: joker.eph Subscribers: llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D19636 llvm-svn: 269067
2016-05-10 23:54:09 +08:00
declare void @g(...)
define void @f() {
entry:
call void (...) @g()
ret void
}