a5376f393e
Summary: 1. Use stream 0 only for combined module. Previously if combined module was not processes ThinLTO used the stream for own output. However small changes in input, could trigger combined module and shuffle outputs making life of llvm::LTO harder. 2. Always process combined module and write output to stream 0. Processing empty combined module is cheap and allows llvm::LTO users to avoid implementing processing which is already done in llvm::LTO. Subscribers: mehdi_amini, inglorion, eraman, hiraditya Differential Revision: https://reviews.llvm.org/D41267 llvm-svn: 320905
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; REQUIRES: x86
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; Basic ThinLTO tests.
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; RUN: opt -module-summary %s -o %t.o
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; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o
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; First force single-threaded mode
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; RUN: rm -f %t.lto.o %t1.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=1 -shared %t.o %t2.o -o %t
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; RUN: llvm-nm %t1.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t2.lto.o | FileCheck %s --check-prefix=NM2
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; Next force multi-threaded mode
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; RUN: rm -f %t2.lto.o %t21.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=2 -shared %t.o %t2.o -o %t2
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; RUN: llvm-nm %t21.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t22.lto.o | FileCheck %s --check-prefix=NM2
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; NM1: T f
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; NM1-NOT: U g
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; NM2: T g
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; Then check without --thinlto-jobs (which currently default to hardware_concurrency)
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; We just check that we don't crash or fail (as it's not sure which tests are
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; stable on the final output file itself.
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; RUN: ld.lld -shared %t.o %t2.o -o %t2
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target datalayout = "e-m:e-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 @g(...)
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define void @f() {
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entry:
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call void (...) @g()
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ret void
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}
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