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f7669ba3d9
Port COFF's https://reviews.llvm.org/D78221 and https://reviews.llvm.org/D137217 to ELF. For the in-process ThinLTO link, `ld.lld --save-temps a.o d/b.o -o out` will create ELF relocatable files `out.lto.a.o`/`d/out.lto.b.o` instead of `out1.lto.o`/`out2.lto.o`. Deriving the LTO-generated relocatable file name from bitcode file names helps debugging. The relocatable file name from the first regular LTO partition does not change: `out.lto.o`. The second, if present due to `--lto-partition=`, changes from `out1.lto.o` to `lto.1.o`. For an archive member, e.g. `d/a.a(coll.o at 8)`, the relocatable file is `d/out.lto.a.a(coll.o at 8).o`. `--lto-emit-asm` file names are changed similarly. `--lto-emit-asm -o out` now creates `out.lto.s` instead of `out`, therefore the `--lto-emit-asm -o -` idiom no longer works. However, I think this new behavior (which matches COFF) is better since keeping or removing `--lto-emit-asm` will dump different files, instead of overwriting the `-o` output file from an executable/shared object to an assembly file. Reviewers: rnk, igorkudrin, xur-llvm, teresajohnson, ZequanWu Reviewed By: teresajohnson Pull Request: https://github.com/llvm/llvm-project/pull/78835
77 lines
2.1 KiB
LLVM
77 lines
2.1 KiB
LLVM
; REQUIRES: x86
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; RUN: rm -rf %t && mkdir %t && cd %t
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; RUN: llvm-as -o a.bc %s
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; RUN: ld.lld --lto-partitions=2 -save-temps -o out a.bc -e foo --lto-O0
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; RUN: llvm-readobj --symbols --dyn-syms out | FileCheck %s
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; RUN: llvm-nm out.lto.o | FileCheck --check-prefix=CHECK0 %s
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; RUN: llvm-nm out.lto.1.o | FileCheck --check-prefix=CHECK1 %s
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; CHECK: Symbols [
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: (0)
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; CHECK-NEXT: Value: 0x0
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; CHECK-NEXT: Size: 0
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; CHECK-NEXT: Binding: Local (0x0)
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; CHECK-NEXT: Type: None (0x0)
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; CHECK-NEXT: Other: 0
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; CHECK-NEXT: Section: Undefined (0x0)
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: {{.*}}.o
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; CHECK-NEXT: Value: 0x0
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; CHECK-NEXT: Size: 0
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; CHECK-NEXT: Binding: Local
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; CHECK-NEXT: Type: File
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; CHECK-NEXT: Other: 0
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; CHECK-NEXT: Section: Absolute
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: {{.*}}.o
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; CHECK-NEXT: Value: 0x0
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; CHECK-NEXT: Size: 0
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; CHECK-NEXT: Binding: Local
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; CHECK-NEXT: Type: File
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; CHECK-NEXT: Other: 0
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; CHECK-NEXT: Section: Absolute
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: bar
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; CHECK-NEXT: Value:
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; CHECK-NEXT: Size: 8
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; CHECK-NEXT: Binding: Local (0x0)
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; CHECK-NEXT: Type: Function (0x2)
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; CHECK-NEXT: Other [ (0x2)
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; CHECK-NEXT: STV_HIDDEN (0x2)
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; CHECK-NEXT: ]
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; CHECK-NEXT: Section: .text (0x2)
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: foo
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; CHECK-NEXT: Value:
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; CHECK-NEXT: Size: 8
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; CHECK-NEXT: Binding: Global (0x1)
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; CHECK-NEXT: Type: Function (0x2)
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; CHECK-NEXT: Other: 0
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; CHECK-NEXT: Section: .text (0x2)
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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; CHECK-NEXT: DynamicSymbols [
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; CHECK-NEXT: ]
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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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; CHECK0: U bar
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; CHECK0: T foo
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define void @foo() {
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call void @bar()
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ret void
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}
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; CHECK1: T bar
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; CHECK1: U foo
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define void @bar() {
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call void @foo()
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ret void
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}
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