Passes ssa_test.
Requires a few new instructions and some scratchpad
memory to move data between G and F registers.
Also fixed comparisons to be correct in case of NaN.
Added missing instructions for run.bash.
Removed some FP registers that are apparently "reserved"
(but that are also apparently also unused except for a
gratuitous multiplication by two when y = x+x would work
just as well).
Currently failing stack splits.
Updates #16010.
Change-Id: I73b161bfff54445d72bd7b813b1479f89fc72602
Reviewed-on: https://go-review.googlesource.com/26813
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Includes hmul (all widths)
compare for boolean result and simplifications
shift operations plus changes/additions for implementation
(ORN, ADDME, ADDC)
Also fixed a backwards-operand CMP.
Change-Id: Id723c4e25125c38e0d9ab9ec9448176b75f4cdb4
Reviewed-on: https://go-review.googlesource.com/25410
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Previously, genMatch0 and genResult0 contained
lots of duplication: locating the op, parsing
the value, validation, etc.
Parsing and validation was mixed in with code gen.
Extract a helper, parseValue. It is responsible
for parsing the value, locating the op, and doing
shared validation.
As a bonus (and possibly as my original motivation),
make op selection pay attention to the number
of args present.
This allows arch-specific ops to share a name
with generic ops as long as there is no ambiguity.
It also detects and reports unresolved ambiguity,
unlike before, where it would simply always
pick the generic op, with no warning.
Also use parseValue when generating the top-level
op dispatch, to ensure its opinion about ops
matches genMatch0 and genResult0.
The order of statements in the generated code used
to depend on the exact rule. It is now somewhat
independent of the rule. That is the source
of some of the generated code changes in this CL.
See rewritedec64 and rewritegeneric for examples.
It is a one-time change.
The op dispatch switch and functions used to be
sorted by opname without architecture. The sort
now includes the architecture, leading to further
generated code changes.
See rewriteARM and rewriteAMD64 for examples.
Again, it is a one-time change.
There are no functional changes.
Change-Id: I22c989183ad5651741ebdc0566349c5fd6c6b23c
Reviewed-on: https://go-review.googlesource.com/24649
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Added support for ClosureCall, DeferCall, InterCall
(GoCall not yet tested).
Added support for GetClosurePtr, IsNonNil, IsInBounds, IsSliceInBounds, NilCheck
(Convert and GetG not yet tested)
Still need to implement NilCheck optimizations.
Fixed move boolean constant, order of operands to subtract.
Updates #16010.
Change-Id: Ibe0f6a6e688df4396cd77de0e9095997e4ca8ed2
Reviewed-on: https://go-review.googlesource.com/25241
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Because PPC lacks store-immediate, remove the instruction
that implies that it exists. Replace it with storezero for
the special case of storing zero, because R0 is reserved zero
for Go (though the assembler knows this, do it in SSA).
Also added address folding for storezero.
(Now corrected to use right-sized stores in bulk-zero code.)
Hello.go now compiles to
genssa main
00000 (...hello.go:7) TEXT "".main(SB), $0
00001 (...hello.go:7) FUNCDATA $0, "".gcargs·0(SB)
00002 (...hello.go:7) FUNCDATA $1, "".gclocals·1(SB)
v23 00003 (...hello.go:8) MOVD $go.string."Hello, World!\n"(SB), R3
v11 00004 (...hello.go:8) MOVD R3, 32(R1)
v22 00005 (...hello.go:8) MOVD $14, R3
v6 00006 (...hello.go:8) MOVD R3, 40(R1)
v20 00007 (...hello.go:8) MOVD R0, 48(R1)
v18 00008 (...hello.go:8) MOVD R0, 56(R1)
v9 00009 (...hello.go:8) MOVD R0, 64(R1)
v10 00010 (...hello.go:8) CALL fmt.Printf(SB)
b2 00011 (...hello.go:9) RET
00012 (<unknown line number>) END
Updates #16010
Change-Id: I33cfd98c21a1617502260ac753fa8cad68c8d85a
Reviewed-on: https://go-review.googlesource.com/25151
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Encode the size and the alignment into AuxInt of Zero and Move ops.
On AMD64, we simply don't look at the alignment. On ARM and PPC64, we
only generate aligned stores.
Updates #15365.
Change-Id: Ifdcc205c364f67c4516b9adebfe7d50d223b6863
Reviewed-on: https://go-review.googlesource.com/24511
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This adds the initial SSA implementation for PPC64.
Builds golang and all.bash runs correctly. Simple hello.go
builds but does not run.
Change-Id: I7cec211b934cd7a2dd75a6cdfaf9f71867063466
Reviewed-on: https://go-review.googlesource.com/24453
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
