https://llvm.org/bugs/show_bug.cgi?id=27679
Bug ID: 27679
Summary: Gold 2.24 on ARMv7 Thumb2 fails to self-host
Clang/LLVM
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: renato.go...@linaro.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
When using Gold 2.24 on Thumb2, llvm-tlbgen fails. BFD ld of the same version
works fine.
Stack dump:
0. Program arguments: /home/linaro/devel/llvm/bisect/build2/bin/llvm-tblgen
-gen-intrinsic -I /home/linaro/devel/llvm/bisect/llvm/include/llvm/IR -I
/home/linaro/devel/llvm/bisect/llvm/lib/Target -I
/home/linaro/devel/llvm/bisect/llvm/include
/home/linaro/devel/llvm/bisect/llvm/include/llvm/IR/Intrinsics.td -o
/home/linaro/devel/llvm/bisect/build2/include/llvm/IR/Intrinsics.gen.tmp
Bus error (core dumped)
Luckily, gold is failing to link stage2 llvm-tblgen, instead of stage1 Clang,
which would be a lot harder to pick up.
The main difference seems to be on branch literals, so likely some relocation
problem:
* GOOD:
bhi.n d4dae
<_ZN12_GLOBAL__N_119RegisterInfoEmitter13runTargetDescERN4llvm11raw_ostreamERNS1_13CodeGenT
...
bl 10315c <_ZN4llvm11raw_ostream5writeEPKcj>
...
b.n d4dc6
<_ZN12_GLOBAL__N_119RegisterInfoEmitter13runTargetDescERN4llvm11raw_ostreamERNS1_13CodeGenTar
* BAD:
bhi.n d29be
<_ZN12_GLOBAL__N_119RegisterInfoEmitter13runTargetDescERN4llvm11raw_ostreamERNS1_13CodeGenT
...
bl 100d6c <_ZN4llvm11raw_ostream5writeEPKcj>
...
b.n d29d6
<_ZN12_GLOBAL__N_119RegisterInfoEmitter13runTargetDescERN4llvm11raw_ostreamERNS1_13CodeGenTar
Both binaries attached for reference.
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