aa0883b59a
Adds support for the following flags: * --thinlto-index-only, --thinlto-index-only= * --thinlto-emit-imports-files * --thinlto-emit-index-files * --thinlto-object-suffix-replace= * --thinlto-prefix-replace= See https://blog.llvm.org/2016/06/thinlto-scalable-and-incremental-lto.html for some words on --thinlto-index-only. I don't really need the other flags, but they were in the vicinity and _someone_ might need them, so I figured I'd add them too. `-object_path_lto` now sets `c.AlwaysEmitRegularLTOObj` as in the other ports, which means it can now only point to a filename for non-thin LTO. I think that was the intent of D129705 anyways, so update test/MachO/lto-object-path.ll to use a non-thin bitcode file for that test. Differential Revision: https://reviews.llvm.org/D138451
66 lines
2.0 KiB
LLVM
66 lines
2.0 KiB
LLVM
; REQUIRES: x86
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; RUN: rm -rf %t && mkdir %t && cd %t
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; RUN: opt -module-summary %s -o 1.bc
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; RUN: opt -module-summary %p/Inputs/thinlto.ll -o 2.bc
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; RUN: ld.lld --plugin-opt=obj-path=4.o -shared 1.bc 2.bc -o 3
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; RUN: llvm-nm 3 | FileCheck %s --check-prefix=NM3
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; RUN: llvm-objdump -d 4.o1 | FileCheck %s --check-prefix=CHECK1
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; RUN: llvm-objdump -d 4.o2 | FileCheck %s --check-prefix=CHECK2
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; NM3: T f
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; NM3-NEXT: T g
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; CHECK1: file format elf64-x86-64
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; CHECK1-EMPTY:
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; CHECK1-NEXT: Disassembly of section .text.f:
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; CHECK1-EMPTY:
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; CHECK1-NEXT: <f>:
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; CHECK1-NEXT: retq
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; CHECK1-NOT: {{.}}
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; CHECK2: file format elf64-x86-64
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; CHECK2-EMPTY:
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; CHECK2-NEXT: Disassembly of section .text.g:
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; CHECK2-EMPTY:
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; CHECK2-NEXT: <g>:
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; CHECK2-NEXT: retq
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; CHECK2-NOT: {{.}}
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;; With --thinlto-index-only, --lto-obj-path= creates just one file.
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; RUN: rm -f 4.o 4.o1 4.o2
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; RUN: ld.lld --thinlto-index-only --lto-obj-path=4.o -shared 1.bc 2.bc -o /dev/null
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; RUN: llvm-objdump -d 4.o | FileCheck %s --check-prefix=EMPTY
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; RUN: not ls 4.o1
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; RUN: not ls 4.o2
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;; Test --plugin-opt=obj-path=.
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; RUN: rm -f 4.o
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; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=4.o -shared 1.bc 2.bc -o /dev/null
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; RUN: llvm-objdump -d 4.o | FileCheck %s --check-prefix=EMPTY
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;; Ensure lld emits empty combined module if specific obj-path.
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; RUN: rm -fr objpath && mkdir objpath
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; RUN: ld.lld --plugin-opt=obj-path=4.o -shared 1.bc 2.bc -o objpath/a.out --save-temps
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; RUN: ls objpath/a.out*.lto.* | count 3
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;; Ensure lld does not emit empty combined module in default.
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; RUN: rm -fr objpath && mkdir objpath
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; RUN: ld.lld -shared 1.bc 2.bc -o objpath/a.out --save-temps
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; RUN: ls objpath/a.out*.lto.* | count 2
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; EMPTY: file format elf64-x86-64
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; EMPTY-NOT: {{.}}
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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 @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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