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6bb0aa513e
Summary: That unless the user requested an output object (--lto-obj-path), the an unused empty combined module is not emitted. This changed is helpful for some target (ex. RISCV-V) which encoded the ABI info in IR module flags (target-abi). Empty unused module has no ABI info so the linker would get the linking error during merging incompatible ABIs. Reviewers: tejohnson, espindola, MaskRay Subscribers: emaste, inglorion, arichardson, hiraditya, simoncook, MaskRay, steven_wu, dexonsmith, PkmX, dang, lenary, s.egerton, luismarques, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D78988
19 lines
546 B
LLVM
19 lines
546 B
LLVM
; RUN: opt -module-summary -o %t.bc %s
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; RUN: rm -f %t2.*
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; RUN: llvm-lto2 run %t.bc -r %t.bc,foo,pl -o %t2 -thinlto-distributed-indexes -save-temps
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; Ensure lto does not emit empty combined module.
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; RUN: test ! -e %t2.0
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; Ensure empty combined module has only 2 temp files.
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; RUN: ls %t2.0.*.bc | count 2
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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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@foo = ifunc i32 (i32), i64 ()* @foo_ifunc
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define internal i64 @foo_ifunc() {
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entry:
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ret i64 0
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}
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