https://llvm.org/bugs/show_bug.cgi?id=28921
Bug ID: 28921
Summary: Assembly parser breaks on certain comments
Product: new-bugs
Version: 3.9
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: tim.bes...@elis.ugent.be
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
As of the assembly parser refactor in r27300 (D20009), clang doesn't parse the
following assembly file anymore:
##
#ifndef TRMMKERNEL
vaddpd 4, %xmm9, %xmm9;
vaddpd 6, %xmm8, %xmm8;
vaddpd 0, %xmm15, %xmm15;
vaddpd 2, %xmm14, %xmm14;
vaddpd 4, %xmm13, %xmm13;
vaddpd 6, %xmm12, %xmm12;
#endif
##
Bisected on the llvm-project repository, release build using CMake 3.6.1 +
Ninja on Debian Jessie if that would matter.
$ clang --version
clang version 3.8.1 (tags/RELEASE_381/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang -DTRMMKERNEL -c kernel.S
$ echo $?
0
$ clang-3.9 --version
clang version 3.9.0
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang-3.9 -DTRMMKERNEL -c kernel.S
kernel.S:1:1: error: unexpected token at start of statement
##
^
This is a test case reduced from a failure to compile OpenBLAS, as reported
here: https://github.com/xianyi/OpenBLAS/issues/942
Using `-no-integrated-as` obviously bypasses the problem.
Some other occurrences of this bug, eg.
http://forum.xda-developers.com/showpost.php?p=67696651&postcount=170
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