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Vendor import of lld release_80 branch r364487:

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https://llvm.org/svn/llvm-project/lld/branches/release_80@364487
This commit is contained in:
Dimitry Andric 2019-07-06 15:34:09 +00:00
parent 444e471239
commit d94942eacd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor/lld/dist-release_80/; revision=349785
svn path=/vendor/lld/lld-release_801-r366581/; revision=350174; tag=vendor/lld/lld-release_801-r366581
2 changed files with 34 additions and 1 deletions
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5
ELF/Arch/PPC64.cpp
View File

@ -757,7 +757,10 @@ bool PPC64::needsThunk(RelExpr Expr, RelType Type, const InputFile *File,
// If the offset exceeds the range of the branch type then it will need
// a range-extending thunk.
return !inBranchRange(Type, BranchAddr, S.getVA());
// See the comment in getRelocTargetVA() about R_PPC64_CALL.
return !inBranchRange(Type, BranchAddr,
S.getVA() +
getPPC64GlobalEntryToLocalEntryOffset(S.StOther));
}
uint32_t PPC64::getThunkSectionSpacing() const {

30
test/ELF/ppc64-long-branch-localentry-offset.s Normal file
View File

@ -0,0 +1,30 @@
# REQUIRES: ppc
# RUN: llvm-mc -filetype=obj -triple=ppc64le %s -o %t.o
# RUN: ld.lld %t.o -o %t
# RUN: llvm-nm %t | FileCheck %s
# CHECK-DAG: 0000000010010000 t __long_branch_callee
# CHECK-DAG: 0000000010010010 T _start
# CHECK-DAG: 0000000012010008 T callee
# The bl instruction jumps to the local entry. The distance requires a long branch stub:
# localentry(callee) - _start = 0x12010008+8 - 0x10010010 = 0x2000000
# We used to compute globalentry(callee) - _start and caused a "R_PPC64_REL24
# out of range" error because we didn't create the stub.
.globl _start
_start:
bl callee
.space 0x1fffff4
.globl callee
callee:
.Lgep0:
addis 2, 12, .TOC.-.Lgep0@ha
addi 2, 2, .TOC.-.Lgep0@l
.Llep0:
.localentry callee, .Llep0-.Lgep0
blr