http://llvm.org/bugs/show_bug.cgi?id=13349
Bug #: 13349
Summary: Bad encoding of certain avx instructions on standard
JIT
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 8886
--> http://llvm.org/bugs/attachment.cgi?id=8886
vpslld.ll
See attached code.
This works:
lli -use-mcjit vpslld.ll
but with mcjit we get
lli vpslld.ll
Illegal instruction
This is the difference between mcjit and standard jit:
162: c5 fd 6f 18 vmovdqa
(%rax), %ymm3
166: c5 f9 fe e3 vpaddd
%xmm3, %xmm0, %xmm4
170: c5 f4 58 ca vaddps
%ymm2, %ymm1, %ymm1
- 174: c5 e9 72 f4 17 vpslld
$23, %xmm4, %xmm2
+ 174: c5 ed 72 f4 17 vpslld
$23, %ymm4, %ymm2
179: c4 e3 7d 19 c0 01
vextractf128 $1, %ymm0, %xmm0
185: c4 e3 7d 19 db 01
vextractf128 $1, %ymm3, %xmm3
191: c5 f9 fe c3 vpaddd
%xmm3, %xmm0, %xmm0
195: c5 f9 72 f0 17 vpslld
$23, %xmm0, %xmm0
200: c4 e3 6d 18 c0 01
vinsertf128 $1, %xmm0, %ymm2, %ymm0
206: c5 fc 59 c1 vmulps
%ymm1, %ymm0, %ymm0
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