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llvm-project/lld/test/ELF/lto/undefined-puts.ll

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[LTO] Include in .symtab/.dynsym symbols introduced by optimizations. Some optimizations, e.g. SimplifyLibCalls, can replace functions with others as part of the lowering, e.g. printf => puts. The new symbols don't have the isUsedInRegularObj flag set so they don't get included in the final symbol table (and dynamic symbol table), and the dynamic linker gets confused. Include them as a fix. Differential Revision: http://reviews.llvm.org/D18357 llvm-svn: 264688
2016-03-29 08:15:52 +08:00
; REQUIRES: x86
; RUN: llvm-mc %p/Inputs/shared.s -o %t1.o -filetype=obj -triple=x86_64-unknown-linux
; RUN: ld.lld %t1.o -o %t1.so -shared
; RUN: llvm-as %s -o %t2.o
[ELF] Remove -m argument to lld in test files. NFC. This should be correctly implied by the linker. This also makes the tests slightly easier to maintain and compare with the equivalent tests under for other platforms. Differential Revision: https://reviews.llvm.org/D47513 llvm-svn: 333567
2018-05-31 01:57:08 +08:00
; RUN: ld.lld %t1.so %t2.o -o %t
[LTO] Include in .symtab/.dynsym symbols introduced by optimizations. Some optimizations, e.g. SimplifyLibCalls, can replace functions with others as part of the lowering, e.g. printf => puts. The new symbols don't have the isUsedInRegularObj flag set so they don't get included in the final symbol table (and dynamic symbol table), and the dynamic linker gets confused. Include them as a fix. Differential Revision: http://reviews.llvm.org/D18357 llvm-svn: 264688
2016-03-29 08:15:52 +08:00
; RUN: llvm-readobj -dyn-symbols -dyn-relocations %t | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@.str = private unnamed_addr constant [6 x i8] c"blah\0A\00", align 1
define i32 @_start() {
%str = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0))
ret i32 0
}
declare i32 @printf(i8*, ...)
; Check that puts symbol is present in the dynamic symbol table and
; there's a relocation for it.
; CHECK: Dynamic Relocations {
ELF: Place relro sections after non-relro sections in r/w segment. This is in preparation for my next change, which will introduce a relro nobits section. That requires that relro sections appear at the end of the progbits part of the r/w segment so that the relro nobits section can appear contiguously. Because of the amount of churn required in the test suite, I'm making this change separately. llvm-svn: 291523
2017-01-10 09:21:30 +08:00
; CHECK-NEXT: 0x202018 R_X86_64_JUMP_SLOT puts 0x0
[LTO] Include in .symtab/.dynsym symbols introduced by optimizations. Some optimizations, e.g. SimplifyLibCalls, can replace functions with others as part of the lowering, e.g. printf => puts. The new symbols don't have the isUsedInRegularObj flag set so they don't get included in the final symbol table (and dynamic symbol table), and the dynamic linker gets confused. Include them as a fix. Differential Revision: http://reviews.llvm.org/D18357 llvm-svn: 264688
2016-03-29 08:15:52 +08:00
; CHECK-NEXT: }
; CHECK: DynamicSymbols [
; CHECK: Symbol {
; CHECK: Name: puts@