12 Commits

Author SHA1 Message Date
Matthew Dempsky
fadad851a3 cmd/compile: implement unsafe.Add and unsafe.Slice
Updates #19367.
Updates #40481.

Change-Id: Iabd2afdd0d520e5d68fd9e6dedd013335a4b3886
Reviewed-on: https://go-review.googlesource.com/c/go/+/312214
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
2021-05-02 20:38:13 +00:00
cuiweixie
32dbaac572 cmd/compile/internal/walk: merge operations when calling ir.NewSlic…
Change-Id: I55ef35a9d8157063c4a41b23cd1ac0002838d30a
GitHub-Last-Rev: e716c5200545a944313ae0d995fcb6eb17d2720e
GitHub-Pull-Request: golang/go#45814
Reviewed-on: https://go-review.googlesource.com/c/go/+/314569
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-29 17:38:15 +00:00
Cherry Zhang
3ff6ff7f84 cmd/compile: preserve pointerness when creating map key temp
When creating the temporary for map functions, if the key
contains pointer, we need to create pointer-typed temporary. So
if the temporary is live across a function call, the pointer is
live.

Change-Id: Id6e14ec9def8bc7987f0f8ce8423caf1e3754fcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/311379
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-20 14:30:03 +00:00
Cherry Zhang
e27f3966bb cmd/compile: be sure to wrap defer/go calls with arguments
CL 298669 implemented wrapping for defer/go calls so the function
being called with defer or go statement has no arguments. This
simplifies the compiler and the runtime, especially with the
new ABI.

If the called function does not have any argument, we don't need
to wrap. But the code missed the cases of method receiver, as
well as some apparent argumentless builtin calls which may later
be rewritten to having arguments (e.g. recover). This CL makes
sure to wrap those cases. Also add a check to ensure that go and
defer calls are indeed argumentless.

Handle "defer recover()" specially, as recover() is lowered to
runtime.gorecover(FP) where FP is the frame's FP. FP needs to be
evaluated before wrapping.

Updates #40724.

Change-Id: I2758b6c69ab6aa02dd588441a457fe28ddd0d5a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/304771
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-03-30 00:47:34 +00:00
Matthew Dempsky
ba0e8a92fa [dev.regabi] cmd/compile: refactor temp construction in walk
This CL adds a few new helper functions for constructing and
initializing temporary variables during walk.

Passes toolstash -cmp.

Change-Id: I54965d992cd8dfef7cb7dc92a17c88372e52a0d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/284224
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2021-01-17 05:08:05 +00:00
Dan Scales
a956a0e909 [dev.regabi] cmd/compile, runtime: fix up comments/error messages from recent renames
Went in a semi-automated way through the clearest renames of functions,
and updated comments and error messages where it made sense.

Change-Id: Ied8e152b562b705da7f52f715991a77dab60da35
Reviewed-on: https://go-review.googlesource.com/c/go/+/284216
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-01-16 02:31:08 +00:00
Cuong Manh Le
ab3b67abfd [dev.regabi] cmd/compile: remove ONEWOBJ
After CL 283233, SSA can now handle new(typ) without the frontend to
generate the type address, so we can remove ONEWOBJ in favor of ONEW
only.

This is also not save for toolstash, the same reason with CL 284115.

Change-Id: Ie03ea36b3b6f95fc7ce080376c6f7afc402d51a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/284117
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-01-16 01:36:46 +00:00
Matthew Dempsky
f2538033c0 [dev.regabi] cmd/compile: remove Nodes.Set [generated]
Just "=". It's cleaner.

Passes toolstash -cmp.

[git-generate]
cd src/cmd/compile/internal/ir
pkgs=$(go list . ../...)
rf '
	ex '"$(echo $pkgs)"' {
		var l Nodes
		var p *Nodes

		p.Set(l) -> *p = l
	}

	ex '"$(echo $pkgs)"' {
		var n InitNode
		var l Nodes

		*n.PtrInit() = l -> n.SetInit(l)
	}

	rm Nodes.Set
'

Change-Id: Ic97219792243667146a02776553942ae1189ff7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/281002
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2021-01-02 10:57:25 +00:00
Matthew Dempsky
2f2d4b4e68 [dev.regabi] cmd/compile: remove {Ptr,Set}Init from Node interface
This CL separates out PtrInit and SetInit into a new InitNode
extension interface, and adds a new TakeInit helper function for
taking and clearing the Init list (if any) from a Node.

This allows removing miniNode.SetInit and miniNode.PtrInit, which in
turn allow getting rid of immutableEmptyNodes, and will allow
simplification of the Nodes API.

It would be nice to get rid of the default Init method too, but
there's way more code that expects to be able to call that at the
moment, so that'll have to wait.

Passes toolstash -cmp.

Change-Id: Ia8c18fab9555b774376f7f43eeecfde4f07b5946
Reviewed-on: https://go-review.googlesource.com/c/go/+/281001
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2021-01-02 10:57:23 +00:00
Matthew Dempsky
d1d64e4cea [dev.regabi] cmd/compile: split SliceExpr.List into separate fields
Passes toolstash -cmp.

Change-Id: I4e31154d04d99f2b80bec6a2c571a2a4a3f2ec99
Reviewed-on: https://go-review.googlesource.com/c/go/+/279959
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
2020-12-23 14:38:23 +00:00
Matthew Dempsky
d19018e8f1 [dev.regabi] cmd/compile: split SliceHeaderExpr.LenCap into separate fields
Passes toolstash -cmp.

Change-Id: Ifc98a408c154a05997963e2c731466842ebbf50e
Reviewed-on: https://go-review.googlesource.com/c/go/+/279958
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2020-12-23 14:09:23 +00:00
Russ Cox
3f04d964ab [dev.regabi] cmd/compile: split up walkexpr1, walkstmt [generated]
walkexpr1 is the second largest non-machine-generated function in the compiler.
weighing in at 1,164 lines. Since we are destroying the git blame history
anyway, now is a good time to split each different case into its own function,
making future work on this function more manageable.
Do the same to walkstmt too for consistency, even though it is a paltry 259 lines.

[git-generate]
cd src/cmd/compile/internal/walk
rf '
	mv addstr walkAddString
	mv walkCall walkCall1
	mv walkpartialcall walkCallPart
	mv walkclosure walkClosure
	mv walkrange walkRange
	mv walkselect walkSelect
	mv walkselectcases walkSelectCases
	mv walkswitch walkSwitch
	mv walkExprSwitch walkSwitchExpr
	mv walkTypeSwitch walkSwitchType
	mv walkstmt walkStmt
	mv walkstmtlist walkStmtList
	mv walkexprlist walkExprList
	mv walkexprlistsafe walkExprListSafe
	mv walkexprlistcheap walkExprListCheap
	mv walkexpr walkExpr
	mv walkexpr1 walkExpr1
	mv walkprint walkPrint
	mv walkappend walkAppend
	mv walkcompare walkCompare
	mv walkcompareInterface walkCompareInterface
	mv walkcompareString walkCompareString

	mv appendslice appendSlice
	mv cheapexpr cheapExpr
	mv copyany walkCopy
	mv copyexpr copyExpr
	mv eqfor eqFor
	mv extendslice extendSlice
	mv finishcompare finishCompare
	mv safeexpr safeExpr

	mv walkStmt:/^\tcase ir.ORECV:/+2,/^\tcase /-2 walkRecv
	add walk.go:/^func walkRecv/-0 \
		// walkRecv walks an ORECV node.
	mv walkStmt:/^\tcase ir.ODCL:/+2,/^\tcase /-2 walkDecl
	add walk.go:/^func walkDecl/-0 \
		// walkDecl walks an ODCL node.
	mv walkStmt:/^\tcase ir.OGO:/+2,/^\tcase /-2 walkGoDefer
	add walk.go:/^func walkGoDefer/-0 \
		// walkGoDefer walks an OGO or ODEFER node.
	mv walkStmt:/^\tcase ir.OFOR,/+2,/^\tcase /-2 walkFor
	add walk.go:/^func walkFor/-0 \
		// walkFor walks an OFOR or OFORUNTIL node.
	mv walkStmt:/^\tcase ir.OIF:/+2,/^\tcase /-2 walkIf
	add walk.go:/^func walkIf/-0 \
		// walkIf walks an OIF node.
	mv walkStmt:/^\tcase ir.ORETURN:/+2,/^\tcase /-2 walkReturn
	add walk.go:/^func walkReturn/-0 \
		// walkReturn walks an ORETURN node.

	mv walkExpr1:/^\tcase ir.ODOT,/+2,/^\tcase /-2 walkDot
	add walk.go:/^func walkDot/-0 \
		// walkDot walks an ODOT or ODOTPTR node.
	mv walkExpr1:/^\tcase ir.ODOTTYPE,/+2,/^\tcase /-2 walkDotType
	add walk.go:/^func walkDotType/-0 \
		// walkDotType walks an ODOTTYPE or ODOTTYPE2 node.
	mv walkExpr1:/^\tcase ir.OLEN,/+2,/^\tcase /-2 walkLenCap
	add walk.go:/^func walkLenCap/-0 \
		// walkLenCap walks an OLEN or OCAP node.
	mv walkExpr1:/^\tcase ir.OANDAND,/+2,/^\tcase /-2 walkLogical
	add walk.go:/^func walkLogical/-0 \
		// walkLogical walks an OANDAND or OOROR node.
	mv walkExpr1:/^\tcase ir.OCALLINTER,/+2,/^\tcase /-2 walkCall
	add walk.go:/^func walkCall/-0 \
		// walkCall walks an OCALLFUNC, OCALLINTER, or OCALLMETH node.
	mv walkExpr1:/^\tcase ir.OAS,/+1,/^\tcase /-2 walkAssign
	add walk.go:/^func walkAssign/-0 \
		// walkAssign walks an OAS (AssignExpr) or OASOP (AssignOpExpr) node.
	mv walkExpr1:/^\tcase ir.OAS2:/+2,/^\tcase /-3 walkAssignList
	add walk.go:/^func walkAssignList/-0 \
		// walkAssignList walks an OAS2 node.
	mv walkExpr1:/^\tcase ir.OAS2FUNC:/+2,/^\tcase /-4 walkAssignFunc
	add walk.go:/^func walkAssignFunc/-0 \
		// walkAssignFunc walks an OAS2FUNC node.
	mv walkExpr1:/^\tcase ir.OAS2RECV:/+2,/^\tcase /-3 walkAssignRecv
	add walk.go:/^func walkAssignRecv/-0 \
		// walkAssignRecv walks an OAS2RECV node.
	mv walkExpr1:/^\tcase ir.OAS2MAPR:/+2,/^\tcase /-2 walkAssignMapRead
	add walk.go:/^func walkAssignMapRead/-0 \
		// walkAssignMapRead walks an OAS2MAPR node.
	mv walkExpr1:/^\tcase ir.ODELETE:/+2,/^\tcase /-2 walkDelete
	add walk.go:/^func walkDelete/-0 \
		// walkDelete walks an ODELETE node.
	mv walkExpr1:/^\tcase ir.OAS2DOTTYPE:/+2,/^\tcase /-2 walkAssignDotType
	add walk.go:/^func walkAssignDotType/-0 \
		// walkAssignDotType walks an OAS2DOTTYPE node.
	mv walkExpr1:/^\tcase ir.OCONVIFACE:/+2,/^\tcase /-2 walkConvInterface
	add walk.go:/^func walkConvInterface/-0 \
		// walkConvInterface walks an OCONVIFACE node.
	mv walkExpr1:/^\tcase ir.OCONV,/+2,/^\tcase /-2 walkConv
	add walk.go:/^func walkConv/-0 \
		// walkConv walks an OCONV or OCONVNOP (but not OCONVIFACE) node.
	mv walkExpr1:/^\tcase ir.ODIV,/+2,/^\tcase /-2 walkDivMod
	add walk.go:/^func walkDivMod/-0 \
		// walkDivMod walks an ODIV or OMOD node.
	mv walkExpr1:/^\tcase ir.OINDEX:/+2,/^\tcase /-2 walkIndex
	add walk.go:/^func walkIndex/-0 \
		// walkIndex walks an OINDEX node.
	# move type assertion above comment
	mv walkExpr1:/^\tcase ir.OINDEXMAP:/+/n := n/-+ walkExpr1:/^\tcase ir.OINDEXMAP:/+0
	mv walkExpr1:/^\tcase ir.OINDEXMAP:/+2,/^\tcase /-2 walkIndexMap
	add walk.go:/^func walkIndexMap/-0 \
		// walkIndexMap walks an OINDEXMAP node.
	mv walkExpr1:/^\tcase ir.OSLICEHEADER:/+2,/^\tcase /-2 walkSliceHeader
	add walk.go:/^func walkSliceHeader/-0 \
		// walkSliceHeader walks an OSLICEHEADER node.
	mv walkExpr1:/^\tcase ir.OSLICE,/+2,/^\tcase /-2 walkSlice
	add walk.go:/^func walkSlice/-0 \
		// walkSlice walks an OSLICE, OSLICEARR, OSLICESTR, OSLICE3, or OSLICE3ARR node.
	mv walkExpr1:/^\tcase ir.ONEW:/+2,/^\tcase /-2 walkNew
	add walk.go:/^func walkNew/-0 \
		// walkNew walks an ONEW node.
	# move type assertion above comment
	mv walkExpr1:/^\tcase ir.OCLOSE:/+/n := n/-+ walkExpr1:/^\tcase ir.OCLOSE:/+0
	mv walkExpr1:/^\tcase ir.OCLOSE:/+2,/^\tcase /-2 walkClose
	add walk.go:/^func walkClose/-0 \
		// walkClose walks an OCLOSE node.
	# move type assertion above comment
	mv walkExpr1:/^\tcase ir.OMAKECHAN:/+/n := n/-+ walkExpr1:/^\tcase ir.OMAKECHAN:/+0
	mv walkExpr1:/^\tcase ir.OMAKECHAN:/+2,/^\tcase /-2 walkMakeChan
	add walk.go:/^func walkMakeChan/-0 \
		// walkMakeChan walks an OMAKECHAN node.
	mv walkExpr1:/^\tcase ir.OMAKEMAP:/+2,/^\tcase /-2 walkMakeMap
	add walk.go:/^func walkMakeMap/-0 \
		// walkMakeMap walks an OMAKEMAP node.
	mv walkExpr1:/^\tcase ir.OMAKESLICE:/+2,/^\tcase /-2 walkMakeSlice
	add walk.go:/^func walkMakeSlice/-0 \
		// walkMakeSlice walks an OMAKESLICE node.
	mv walkExpr1:/^\tcase ir.OMAKESLICECOPY:/+2,/^\tcase /-2 walkMakeSliceCopy
	add walk.go:/^func walkMakeSliceCopy/-0 \
		// walkMakeSliceCopy walks an OMAKESLICECOPY node.
	mv walkExpr1:/^\tcase ir.ORUNESTR:/+2,/^\tcase /-2 walkRuneToString
	add walk.go:/^func walkRuneToString/-0 \
		// walkRuneToString walks an ORUNESTR node.
	mv walkExpr1:/^\tcase ir.OBYTES2STR,/+2,/^\tcase /-2 walkBytesRunesToString
	add walk.go:/^func walkBytesRunesToString/-0 \
		// walkBytesRunesToString walks an OBYTES2STR or ORUNES2STR node.
	mv walkExpr1:/^\tcase ir.OBYTES2STRTMP:/+2,/^\tcase /-2 walkBytesToStringTemp
	add walk.go:/^func walkBytesToStringTemp/-0 \
		// walkBytesToStringTemp walks an OBYTES2STRTMP node.
	mv walkExpr1:/^\tcase ir.OSTR2BYTES:/+2,/^\tcase /-2 walkStringToBytes
	add walk.go:/^func walkStringToBytes/-0 \
		// walkStringToBytes walks an OSTR2BYTES node.
	# move type assertion above comment
	mv walkExpr1:/^\tcase ir.OSTR2BYTESTMP:/+/n := n/-+ walkExpr1:/^\tcase ir.OSTR2BYTESTMP:/+0
	mv walkExpr1:/^\tcase ir.OSTR2BYTESTMP:/+2,/^\tcase /-2 walkStringToBytesTemp
	add walk.go:/^func walkStringToBytesTemp/-0 \
		// walkStringToBytesTemp walks an OSTR2BYTESTMP node.
	mv walkExpr1:/^\tcase ir.OSTR2RUNES:/+2,/^\tcase /-2 walkStringToRunes
	add walk.go:/^func walkStringToRunes/-0 \
		// walkStringToRunes walks an OSTR2RUNES node.
	mv walkExpr1:/^\tcase ir.OARRAYLIT,/+1,/^\tcase /-2 walkCompLit
	add walk.go:/^func walkCompLit/-0 \
		// walkCompLit walks a composite literal node: \
		// OARRAYLIT, OSLICELIT, OMAPLIT, OSTRUCTLIT (all CompLitExpr), or OPTRLIT (AddrExpr).
	mv walkExpr1:/^\tcase ir.OSEND:/+2,/^\tcase /-2 walkSend
	add walk.go:/^func walkSend/-0 \
		// walkSend walks an OSEND node.

	mv walkStmt walkStmtList \
		walkDecl \
		walkFor \
		walkGoDefer \
		walkIf \
		wrapCall \
		stmt.go

	mv walkExpr walkExpr1 walkExprList walkExprListCheap walkExprListSafe \
		cheapExpr safeExpr copyExpr \
		walkAddString \
		walkCall \
		walkCall1 \
		walkDivMod \
		walkDot \
		walkDotType \
		walkIndex \
		walkIndexMap \
		walkLogical \
		walkSend \
		walkSlice \
		walkSliceHeader \
		reduceSlice \
		bounded \
		usemethod \
		usefield \
		expr.go

	mv \
		walkAssign \
		walkAssignDotType \
		walkAssignFunc \
		walkAssignList \
		walkAssignMapRead \
		walkAssignRecv \
		walkReturn \
		fncall \
		ascompatee \
		ascompatee1 \
		ascompatet \
		reorder3 \
		reorder3save \
		aliased \
		anyAddrTaken \
		refersToName \
		refersToCommonName \
		appendSlice \
		isAppendOfMake \
		extendSlice \
		assign.go

	mv \
		walkCompare \
		walkCompareInterface \
		walkCompareString \
		finishCompare \
		eqFor \
		brcom \
		brrev \
		tracecmpArg \
		canMergeLoads \
		compare.go

	mv \
		walkConv \
		walkConvInterface \
		walkBytesRunesToString \
		walkBytesToStringTemp \
		walkRuneToString \
		walkStringToBytes \
		walkStringToBytesTemp \
		walkStringToRunes \
		convFuncName \
		rtconvfn \
		byteindex \
		walkCheckPtrAlignment \
		walkCheckPtrArithmetic \
		convert.go

	mv \
		walkAppend \
		walkClose \
		walkCopy \
		walkDelete \
		walkLenCap \
		walkMakeChan \
		walkMakeMap \
		walkMakeSlice \
		walkMakeSliceCopy \
		walkNew \
		walkPrint \
		badtype \
		callnew \
		writebarrierfn \
		isRuneCount \
		builtin.go

	mv \
		walkCompLit \
		sinit.go \
		complit.go

	mv subr.go walk.go
'

Change-Id: Ie0cf3ba4adf363c120c134d57cb7ef37934eaab9
Reviewed-on: https://go-review.googlesource.com/c/go/+/279430
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-23 06:39:50 +00:00