This is the result of running a testsuite to check GCC's generation of
PDP-10 instructions.

Every test case consists of one C file and some assembly code files
which should match the code generated for each processor.  The C file
contains a few functions which usually compile into one instruction +
a POPJ each.

ERROR indicates a compiler error or crash.  FAIL means that the
generated assembly code file didn't match the provided assembly code
file.

Notes appear below.

Testcase		166	KA10	KI10	KL10	"2"     Note
ADD-pointer             FAIL	FAIL	FAIL	FAIL	FAIL	[1]
ADD                     ok	ok	ok	ok	ok	
ADJBP                   n/a	n/a	n/a	ok	ok	
AND                     ok	ok	ok	ok	ok	
ANDCA                   ok	ok	ok	ok	ok	
ANDCB                   ok	ok	ok	ok	ok	
ANDCM                   ok	ok	ok	ok	ok	
AOJ                     ok	ok	ok	ok	ok	
AOS                     ok	ok	ok	ok	ok	
ASH                     ok	ok	ok	ok	ok	
ASHC                    ok	ok	ok	ok	ok	
BLT                     ok	ok	ok	FAIL	FAIL	[2]
CAI                     ok	ok	ok	ok	ok	
CAM                     ok	ok	ok	ok	ok	
DADD                    n/a	n/a	n/a	ok	ok	
DDFIX                   n/a	n/a	n/a	n/a	ok	
DDFLTR                  n/a	n/a	n/a	n/a	ok	
DFAD                    n/a	n/a	ok	ok	ok	
DFDV                    n/a	n/a	ok	ok	ok	
DFIX                    n/a	n/a	n/a	n/a	ok	
DFLTR                   n/a	n/a	n/a	n/a	ok	
DFMP                    n/a	n/a	ok	ok	ok	
DFSB                    n/a	n/a	ok	ok	ok	
DFSC                    n/a	n/a	n/a	n/a	ok	
DGFLTR                  n/a	n/a	n/a	ok	ok	
DMOVE                   n/a	n/a	ok	ok	ok	
DMOVN                   n/a	n/a	ok	ok	ok	
DPB                     ok	ok	ok	ok	ok	
DSQRT                   n/a	n/a	n/a	n/a	ERROR	[3]
DSUB                    n/a	n/a	n/a	ok	ok	
EQV                     ok	ok	ok	ok	ok	
EXCH                    ok	ok	ok	ok	ok	
FADR                    ok	ok	ok	ok	ok	
FDVR                    ok	ok	ok	ok	ok	
FFS                     n/a	n/a	n/a	n/a	ok	
FIX                     n/a	n/a	ok	ok	ok	
FLTR                    n/a	n/a	ok	ok	ok	
FMPR                    ok	ok	ok	ok	ok	
FSBR                    ok	ok	ok	ok	ok	
FSC                     ok	ok	ok	ok	ok	
GDBLE                   n/a	n/a	n/a	ok	ok	
GDFIX                   n/a	n/a	n/a	ok	ok	
GFAD                    n/a	n/a	n/a	ok	ok	
GFDV                    n/a	n/a	n/a	ok	ok	
GFIX                    n/a	n/a	n/a	ok	ok	
GFLTR                   n/a	n/a	n/a	ok	ok	
GFMP                    n/a	n/a	n/a	ok	ok	
GFSB                    n/a	n/a	n/a	ok	ok	
GFSC                    n/a	n/a	n/a	ok	ok	
GSNGL                   n/a	n/a	n/a	ok	ok	
GSQRT                   n/a	n/a	n/a	n/a	ERROR	[3]
IBP                     ok	ok	ok	ok	ok	
IDIV                    ok	ok	ok	ok	ok	
IDPB                    FAIL	FAIL	FAIL	FAIL	FAIL	[4]
ILDB                    FAIL	FAIL	FAIL	FAIL	FAIL	[4]
ILDBE                   FAIL	FAIL	FAIL	FAIL	FAIL	[4]
IMUL                    ok	ok	ok	ok	ok	
IOR                     ok	ok	ok	ok	ok	
JFFO                    n/a	ok	ok	ok	ok	
JRST                    ok	ok	ok	ok	ok	
LDB                     ok	ok	ok	ok	ok	
LDBE                    ok	ok	ok	ok	ok	[5]
LSH                     ok	ok	ok	ok	ok	
LSHC                    ok	ok	ok	ok	ok	
MOVE                    ok	ok	ok	ok	ok	
MOVM                    ok	ok	ok	ok	ok	
MOVN                    ok	ok	ok	ok	ok	
MOVS                    ok	ok	ok	ok	ok	
MUL                     ok	ok	ok	ok	ok	
ORCA                    ok	ok	ok	ok	ok	
ORCB                    ok	ok	ok	ok	ok	
ORCM                    ok	ok	ok	ok	ok	
PUSHJ                   ok	ok	ok	ok	ok	
ROT                     ok	ok	ok	ok	ok	
ROTC                    ok	ok	ok	ok	ok	
SETCA                   ok	ok	ok	ok	ok	
SETCM                   ok	ok	ok	ok	ok	
SETOM                   ok	ok	ok	ok	ok	
SETZM                   ok	ok	ok	ok	ok	
SKIP                    ok	ok	ok	ok	ok	
SOJ                     ok	ok	ok	ok	ok	
SOS                     ok	ok	ok	ok	ok	
SQRT                    n/a	n/a	n/a	n/a	ERROR	[3]
SUB                     ok	ok	ok	ok	ok	
XBLT                    n/a	n/a	n/a	FAIL	FAIL	[1]
XOR                     ok	ok	ok	ok	ok	

Notes

[1] The ADD to word pointer and XBLT test cases fail because GCC
generates suboptimal (though correct) code.

[2] BLT fails for KL10 and "2" (which use extended addressing by
default), because GCC doesn't recognize the switch to use local
addressing in certain circumstances.  Thus XBLT is generated, which
doesn't match the BLT test case.

[3] The square root instructions fail because, for some reason, GCC
thinks square root instructions can only be generated for machines
with IEEE floating point format.

[4] The pre-incrementing byte instructions fail because GCC doesn't
recognize the opportunity to generate them.  IBP + a non-incrementing
instruction is generated instead.

[5] A true LDBE is only generated for the "2".  LDB + TRNE + ORCMI is
generated for other processors.