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llvm-mirror/test/tools/gold/bcsection.ll
Peter Collingbourne 3d7ffbad08 LTO: introduce object file-based on-disk module format.
This format is simply a regular object file with the bitcode stored in a
section named ".llvmbc", plus any number of other (non-allocated) sections.

One immediate use case for this is to accommodate compilation processes
which expect the object file to contain metadata in non-allocated sections,
such as the ".go_export" section used by some Go compilers [1], although I
imagine that in the future we could consider compiling parts of the module
(such as large non-inlinable functions) directly into the object file to
improve LTO efficiency.

[1] http://golang.org/doc/install/gccgo#Imports

Differential Revision: http://reviews.llvm.org/D4371

llvm-svn: 218078
2014-09-18 21:28:49 +00:00

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LLVM

; RUN: llvm-as -o %T/bcsection.bc %s
; RUN: llvm-mc -I=%T -filetype=obj -o %T/bcsection.bco %p/Inputs/bcsection.s
; RUN: llvm-nm -no-llvm-bc %T/bcsection.bco | count 0
; RUN: ld -r -o %T/bcsection.o -plugin %llvmshlibdir/LLVMgold.so %T/bcsection.bco
; RUN: llvm-nm -no-llvm-bc %T/bcsection.o | FileCheck %s
; CHECK: main
define i32 @main() {
ret i32 0
}