https://llvm.org/bugs/show_bug.cgi?id=29133
Bug ID: 29133
Summary: ICE in code gen for AVX compiling qtransform.cpp Qt
5.8
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: thi...@kde.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
When compiling, I got:
fatal error: error in backend: Cannot select: 0x3bb04a0: v4f64 =
X86ISD::SUBV_BROADCAST 0x3bae790
0x3bae790: v2f64,ch = load<LD16[%154](align=8)> 0x2795f60, 0x3badbc0,
undef:i64
0x3badbc0: i64 = add 0x3b7fb10, Constant:i64<32>
0x3b7fb10: i64,ch = CopyFromReg 0x2795f60, Register:i64 %vreg22
0x3b7b180: i64 = Register %vreg22
0x3bae090: i64 = Constant<32>
0x3bae410: i64 = undef
In function: _ZNK10QTransformmlERKS_
clang-4.0: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
openSUSE Linux clang version 4.0.0 (trunk 279424) (based on LLVM 4.0.0svn)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/tjmaciei/bin
clang-4.0: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
The above happens with -march=sandybridge and any Intel processors more recent
than SNB. There's no ICE with -march=westmere or older processors, nor with
-march=sandybridge -mno-avx.
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