d535a05ca1
another one for distributed mode. Currently during module importing, ThinLTO opens all the source modules, collect functions to be imported and append them to the destination module, then leave all the modules open through out the lto backend pipeline. This patch refactors it in the way that one source module will be closed before another source module is opened. All the source modules will be closed after importing phase is done. It will save some amount of memory when there are many source modules to be imported. Note that this patch only changes the distributed thinlto mode. For in process thinlto mode, one source module is shared acorss different thinlto backend threads so it is not changed in this patch. Differential Revision: https://reviews.llvm.org/D99554
65 lines
3.0 KiB
LLVM
65 lines
3.0 KiB
LLVM
; REQUIRES: x86-registered-target
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; RUN: opt -module-summary -o %t1.o %s
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; RUN: opt -module-summary -o %t2.o %S/Inputs/thinlto_backend.ll
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; RUN: llvm-lto -thinlto -o %t %t1.o %t2.o
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; Ensure clang -cc1 give expected error for incorrect input type
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; RUN: not %clang_cc1 -O2 -o %t1.o -x c %s -c -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-WARNING
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; CHECK-WARNING: error: invalid argument '-fthinlto-index={{.*}}' only allowed with '-x ir'
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; Ensure we get expected error for missing index file
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; RUN: %clang -O2 -o %t4.o -x ir %t1.o -c -fthinlto-index=bad.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-ERROR1
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; CHECK-ERROR1: Error loading index file 'bad.thinlto.bc'
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; Ensure we ignore empty index file, and run non-ThinLTO compilation which
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; would not import f2
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; RUN: touch %t4.thinlto.bc
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t4.o -x ir %t1.o -c -fthinlto-index=%t4.thinlto.bc
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; RUN: llvm-nm %t4.o | FileCheck --check-prefix=CHECK-OBJ-IGNORE-EMPTY %s
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; CHECK-OBJ-IGNORE-EMPTY: T f1
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; CHECK-OBJ-IGNORE-EMPTY: U f2
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; Ensure we don't fail with index and non-ThinLTO object file, and output must
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; be empty file.
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; RUN: opt -o %t5.o %s
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t4.o -x ir %t5.o -c -fthinlto-index=%t.thinlto.bc
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; RUN: llvm-nm %t4.o 2>&1 | count 0
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; Ensure f2 was imported. Check for all 3 flavors of -save-temps[=cwd|obj].
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps=obj
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; RUN: llvm-dis %t1.s.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
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; RUN: mkdir -p %T/dir1
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; RUN: cd %T/dir1
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps=cwd
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; RUN: cd ../..
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; RUN: llvm-dis %T/dir1/*1.s.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
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; RUN: mkdir -p %T/dir2
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; RUN: cd %T/dir2
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc -save-temps
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; RUN: cd ../..
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; RUN: llvm-dis %T/dir2/*1.s.3.import.bc -o - | FileCheck --check-prefix=CHECK-IMPORT %s
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; CHECK-IMPORT: define available_externally void @f2()
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; RUN: llvm-nm %t3.o | FileCheck --check-prefix=CHECK-OBJ %s
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; CHECK-OBJ: T f1
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; CHECK-OBJ-NOT: U f2
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; Ensure we get expected error for input files without summaries
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; RUN: opt -o %t2.o %s
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; RUN: %clang -target x86_64-unknown-linux-gnu -O2 -o %t3.o -x ir %t1.o -c -fthinlto-index=%t.thinlto.bc 2>&1 | FileCheck %s -check-prefix=CHECK-ERROR2
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; CHECK-ERROR2: Error loading imported file {{.*}}: Could not find module summary
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target datalayout = "e-m:e-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-unknown-linux-gnu"
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declare void @f2()
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declare i8* @f3()
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define void @f1() {
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call void @f2()
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; Make sure that the backend can handle undefined references.
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; Do an indirect call so that the undefined ref shows up in the combined index.
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call void bitcast (i8*()* @f3 to void()*)()
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ret void
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}
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