ac2224c022
Fixes PR48681: after LTO, lto.tmp may reference a libcall symbol not in an IR symbol table of any bitcode file. If such a symbol is defined in an archive matched by a --exclude-libs, we don't correctly localize the symbol. Add another `excludeLibs` after `compileBitcodeFiles` to localize such libcall symbols. Unfortunately we have keep the existing one for D43126. Using VER_NDX_LOCAL is an implementation detail of `--exclude-libs`, it does not necessarily tie to the "localize" behavior. `local:` patterns in a version script can be omitted. The `symbol ... has undefined version ...` error should not be exempted. Ideally we should error as GNU ld does. https://issuetracker.google.com/issues/73020933 Reviewed By: psmith Differential Revision: https://reviews.llvm.org/D94280
29 lines
851 B
LLVM
29 lines
851 B
LLVM
; REQUIRES: x86
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; RUN: rm -rf %t && split-file %s %t
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; RUN: llvm-as %t/a.ll -o %t/a.bc
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; RUN: llvm-mc -filetype=obj -triple=x86_64 %t/b.s -o %t/b.o
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; RUN: llvm-ar rc %t/b.a %t/b.o
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; RUN: ld.lld -shared --exclude-libs=b.a %t/a.bc %t/b.a -o %t.so -y __divti3 2>&1 | FileCheck %s --check-prefix=TRACE
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; RUN: llvm-readelf --dyn-syms %t.so | FileCheck %s
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; TRACE: {{.*}}/b.a: lazy definition of __divti3
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; TRACE-NEXT: lto.tmp: reference to __divti3
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; TRACE-NEXT: {{.*}}/b.a(b.o): definition of __divti3
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; CHECK: Symbol table '.dynsym' contains 2 entries:
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; CHECK-NOT: __divti3
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;--- a.ll
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target triple = "x86_64-unknown-linux"
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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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define i128 @foo(i128 %x, i128 %y) {
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entry:
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%div = sdiv i128 %x, %y
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ret i128 %div
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}
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;--- b.s
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.globl __divti3
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__divti3:
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