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c96a29c643
Summary: Disable the always importing of constants introduced in D70404 by default under a new internal option, since it is causing order of magnitude compile time regressions during the thin link. Will continue investigating why the regressions occur. Reviewers: evgeny777, wmi Subscribers: mehdi_amini, inglorion, hiraditya, steven_wu, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D73724
32 lines
1.7 KiB
LLVM
32 lines
1.7 KiB
LLVM
; Do setup work for all below tests: generate bitcode and combined index
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; RUN: opt -module-summary %s -o %t.bc
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; RUN: opt -module-summary %p/Inputs/referenced_by_constant.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t.bc %t2.bc
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; Check the import side: we currently import bar() and also promote/import
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; referenced constant objects. There is stll a room for improvement: we
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; can make a local copy of someglobal and someglobal2 because they are both
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; 'unnamed_addr' constants. This should eventually be done as well.
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; RUN: llvm-lto -thinlto-action=import -import-constants-with-refs %t.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=IMPORT
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; IMPORT: @someglobal.llvm.0 = available_externally hidden unnamed_addr constant i8* bitcast (void ()* @referencedbyglobal to i8*)
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; IMPORT: @someglobal2.llvm.0 = available_externally hidden unnamed_addr constant i8* bitcast (void ()* @localreferencedbyglobal.llvm.0 to i8*)
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; IMPORT: define available_externally void @bar()
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; Check the export side: we currently only export bar(), which causes
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; @someglobal and @someglobal2 to be promoted (see above).
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; RUN: llvm-lto -thinlto-action=promote -import-constants-with-refs %t2.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=EXPORT
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; EXPORT: @someglobal.llvm.0 = hidden unnamed_addr constant
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; EXPORT: @someglobal2.llvm.0 = hidden unnamed_addr constant
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; EXPORT: define void @referencedbyglobal()
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; EXPORT: define hidden void @localreferencedbyglobal.llvm
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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declare void @bar()
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define void @foo() {
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call void @bar()
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ret void
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}
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