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llvm-project/llvm/test/tools/llvm-lto/thinlto.ll

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llvm-lto support for generating combined function indexes Summary: This patch adds support to llvm-lto that mirrors the support added by r249270 to the gold plugin. This enables better testing of combined index generation for ThinLTO. Added a new test, and this support will be used in the test in D13515. Reviewers: joker.eph Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13847 llvm-svn: 250699
2015-10-19 22:30:44 +08:00
; Test combined function index generation for ThinLTO via llvm-lto.
Move summary creation out of llvm-as into opt Summary: Let keep llvm-as "dumb": it converts textual IR to bitcode. This commit removes the dependency from llvm-as to libLLVMAnalysis. We'll add back summary in llvm-as if we get to a textual representation for it at some point. In the meantime, opt seems like a better place for that. Reviewers: tejohnson Subscribers: joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D19032 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 266131
2016-04-13 05:35:18 +08:00
; RUN: opt -module-summary %s -o %t.o
; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o
llvm-lto support for generating combined function indexes Summary: This patch adds support to llvm-lto that mirrors the support added by r249270 to the gold plugin. This enables better testing of combined index generation for ThinLTO. Added a new test, and this support will be used in the test in D13515. Reviewers: joker.eph Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13847 llvm-svn: 250699
2015-10-19 22:30:44 +08:00
; 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
Fix windows bot failures from r250699 by removing "/" from expected path in test output. llvm-svn: 250701
2015-10-19 23:19:02 +08:00
; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
; COMBINED-NEXT: <ENTRY {{.*}} record string = '{{.*}}thinlto.ll.tmp{{.*}}.o'
llvm-lto support for generating combined function indexes Summary: This patch adds support to llvm-lto that mirrors the support added by r249270 to the gold plugin. This enables better testing of combined index generation for ThinLTO. Added a new test, and this support will be used in the test in D13515. Reviewers: joker.eph Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13847 llvm-svn: 250699
2015-10-19 22:30:44 +08:00
; COMBINED-NEXT: </MODULE_STRTAB_BLOCK
[ThinLTO] Support for reference graph in per-module and combined summary. Summary: This patch adds support for including a full reference graph including call graph edges and other GV references in the summary. The reference graph edges can be used to make importing decisions without materializing any source modules, can be used in the plugin to make file staging decisions for distributed build systems, and is expected to have other uses. The call graph edges are recorded in each function summary in the bitcode via a list of <CalleeValueIds, StaticCount> tuples when no PGO data exists, or <CalleeValueId, StaticCount, ProfileCount> pairs when there is PGO, where the ValueId can be mapped to the function GUID via the ValueSymbolTable. In the function index in memory, the call graph edges reference the target via the CalleeGUID instead of the CalleeValueId. The reference graph edges are recorded in each summary record with a list of referenced value IDs, which can be mapped to value GUID via the ValueSymbolTable. Addtionally, a new summary record type is added to record references from global variable initializers. A number of bitcode records and data structures have been renamed to reflect the newly expanded scope of the summary beyond functions. More cleanup will follow. Reviewers: joker.eph, davidxl Subscribers: joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D17212 llvm-svn: 263275
2016-03-12 02:52:24 +08:00
; COMBINED-NEXT: <GLOBALVAL_SUMMARY_BLOCK
Add a version field in the bitcode for the summary Differential Revision: http://reviews.llvm.org/D19456 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 267318
2016-04-24 11:18:11 +08:00
; COMBINED-NEXT: <VERSION
[ThinLTO] Serialize WithGlobalValueDeadStripping index flag for distributed backends Summary: A recent fix to drop dead symbols (r323633) did not work for ThinLTO distributed backends because we lose the WithGlobalValueDeadStripping set on the index during the thin link. This patch adds a new flags record to the bitcode format for the index, and serializes this flag for the combined index (it would always be 0 for the per-module index generated by the compile step, so no need to serialize the new flags record there until/unless we add another flag that applies to the per-module indexes). Generally this flag should always be set for the distributed backends, which are necessarily performed after the thin link. However, if we were to simply set this flag on the index applied to the distributed backends (invoked via clang), we would lose the ability to disable dead stripping via -compute-dead=false for debugging purposes. Reviewers: grimar, pcc Subscribers: mehdi_amini, inglorion, eraman, llvm-commits Differential Revision: https://reviews.llvm.org/D42799 llvm-svn: 324444
2018-02-07 12:05:59 +08:00
; COMBINED-NEXT: <FLAGS
Bitcode: Add a string table to the bitcode format. Add a top-level STRTAB block containing a string table blob, and start storing strings for module codes FUNCTION, GLOBALVAR, ALIAS, IFUNC and COMDAT in the string table. This change allows us to share names between globals and comdats as well as between modules, and improves the efficiency of loading bitcode files by no longer using a bit encoding for symbol names. Once we start writing the irsymtab to the bitcode file we will also be able to share strings between it and the module. On my machine, link time for Chromium for Linux with ThinLTO decreases by about 7% for no-op incremental builds or about 1% for full builds. Total bitcode file size decreases by about 3%. As discussed on llvm-dev: http://lists.llvm.org/pipermail/llvm-dev/2017-April/111732.html Differential Revision: https://reviews.llvm.org/D31838 llvm-svn: 300464
2017-04-18 01:51:36 +08:00
; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
; COMBINED-NEXT: <VALUE_GUID op0={{1|2}} op1={{-3706093650706652785|-5300342847281564238}}
[ThinLTO] Support for reference graph in per-module and combined summary. Summary: This patch adds support for including a full reference graph including call graph edges and other GV references in the summary. The reference graph edges can be used to make importing decisions without materializing any source modules, can be used in the plugin to make file staging decisions for distributed build systems, and is expected to have other uses. The call graph edges are recorded in each function summary in the bitcode via a list of <CalleeValueIds, StaticCount> tuples when no PGO data exists, or <CalleeValueId, StaticCount, ProfileCount> pairs when there is PGO, where the ValueId can be mapped to the function GUID via the ValueSymbolTable. In the function index in memory, the call graph edges reference the target via the CalleeGUID instead of the CalleeValueId. The reference graph edges are recorded in each summary record with a list of referenced value IDs, which can be mapped to value GUID via the ValueSymbolTable. Addtionally, a new summary record type is added to record references from global variable initializers. A number of bitcode records and data structures have been renamed to reflect the newly expanded scope of the summary beyond functions. More cleanup will follow. Reviewers: joker.eph, davidxl Subscribers: joker.eph, llvm-commits Differential Revision: http://reviews.llvm.org/D17212 llvm-svn: 263275
2016-03-12 02:52:24 +08:00
; COMBINED-NEXT: <COMBINED
; COMBINED-NEXT: <COMBINED
; COMBINED-NEXT: </GLOBALVAL_SUMMARY_BLOCK
llvm-lto support for generating combined function indexes Summary: This patch adds support to llvm-lto that mirrors the support added by r249270 to the gold plugin. This enables better testing of combined index generation for ThinLTO. Added a new test, and this support will be used in the test in D13515. Reviewers: joker.eph Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13847 llvm-svn: 250699
2015-10-19 22:30:44 +08:00
[LTO] Reject modules without datalayout. Also, udpate the ~60 failing tests in the tree which did not contain a valid datalayout. This fixes PR31123. lld will be updated in a following patch, immediately after this is committed. Differential Revision: https://reviews.llvm.org/D27082 llvm-svn: 289719
2016-12-15 05:57:04 +08:00
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
llvm-lto support for generating combined function indexes Summary: This patch adds support to llvm-lto that mirrors the support added by r249270 to the gold plugin. This enables better testing of combined index generation for ThinLTO. Added a new test, and this support will be used in the test in D13515. Reviewers: joker.eph Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13847 llvm-svn: 250699
2015-10-19 22:30:44 +08:00
define void @f() {
entry:
ret void
}