SSA unimplemented report

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Keith Randall

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Aug 20, 2015, 12:12:07 AM8/20/15

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Just checking in to let people know where we are and what remains to do. Below is a list of SSA coverage failures during make.bash, by frequency. Some of these are in progress, like David Chase is working on the float ops.

A bunch of the compound object ops (SLICESTR and friends) should be easier once decomposing (https://go-review.googlesource.com/13683) is in.

42% of functions compiled during make.bash have no unimplemented opcodes. (This does not imply correct output, just that SSA compilation didn't fail.)

Of the 148 std packages in the distribution, 125 test fine using the SSA-generated code, 9 fail (flag, go/doc,...), and 14 have no tests.

I'm working on gcmaps which should make GOGC=off and large initial stacks unnecessary.

3268 SSA unimplemented: spill of flags not implemented yet

1806 SSA unimplemented: unhandled expr SLICEARR

1678 SSA unimplemented: unhandled expr CALLINTER

1441 SSA unimplemented: unhandled stmt RETJMP

1247 SSA unimplemented: unhandled expr EFACE

1031 SSA unimplemented: unhandled expr SLICE

600 SSA unimplemented: unhandled expr SLICESTR

426 SSA unimplemented: unhandled expr APPEND

389 SSA unimplemented: unhandled expr CLOSUREVAR

373 SSA unimplemented: unhandled stmt DEFER

373 SSA unimplemented: unhandled stmt AS2DOTTYPE

195 SSA unimplemented: unhandled expr DOTTYPE

104 SSA unimplemented: local variable buf with class PAUTO,heap unimplemented

84 SSA unimplemented: unhandled binary op NE etype=FLOAT64

64 SSA unimplemented: unhandled expr STRUCTLIT

62 SSA unimplemented: unhandled expr MOD

57 SSA unimplemented: local variable b with class PAUTO,heap unimplemented

55 SSA unimplemented: zero for type float64 not implemented

54 SSA unimplemented: addr: bad op CLOSUREVAR

46 SSA unimplemented: unhandled binary op EQ etype=FLOAT64

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