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[dev.ssa] cmd/compile: copy values during rewrites
Rather than require an explicit Copy on the RHS of rewrite rules, use rulegen magic to add it. The advantages to handling this in rulegen are: * simpler rules * harder to accidentally miss a Copy Change-Id: I46853bade83bdf517eee9495bf5a553175277b53 Reviewed-on: https://go-review.googlesource.com/13242 Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Josh Bleecher Snyder
parent
d2150c8328
commit
0fb818a424
@ -71,12 +71,12 @@
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(ZeroExt32to64 x) -> (MOVLQZX x)
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// Because we ignore high parts of registers, truncates are just copies.
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(Trunc16to8 x) -> (Copy x)
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(Trunc32to8 x) -> (Copy x)
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(Trunc32to16 x) -> (Copy x)
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(Trunc64to8 x) -> (Copy x)
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(Trunc64to16 x) -> (Copy x)
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(Trunc64to32 x) -> (Copy x)
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(Trunc16to8 x) -> x
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(Trunc32to8 x) -> x
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(Trunc32to16 x) -> x
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(Trunc64to8 x) -> x
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(Trunc64to16 x) -> x
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(Trunc64to32 x) -> x
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// Lowering shifts
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// Unsigned shifts need to return 0 if shift amount is >= width of shifted value.
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@ -338,7 +338,7 @@
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// strength reduction
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(MULQconst [-1] x) -> (NEGQ x)
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(MULQconst [0] _) -> (MOVQconst [0])
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(MULQconst [1] x) -> (Copy x)
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(MULQconst [1] x) -> x
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(MULQconst [3] x) -> (LEAQ2 x x)
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(MULQconst [5] x) -> (LEAQ4 x x)
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(MULQconst [9] x) -> (LEAQ8 x x)
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@ -393,10 +393,10 @@
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(MOVQloadidx8 [off1] (ADDQconst [off2] ptr) idx mem) -> (MOVQloadidx8 [addOff(off1, off2)] ptr idx mem)
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(MOVQstoreidx8 [off1] (ADDQconst [off2] ptr) idx val mem) -> (MOVQstoreidx8 [addOff(off1, off2)] ptr idx val mem)
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(ADDQconst [0] x) -> (Copy x)
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(ADDQconst [0] x) -> x
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// lower Zero instructions with word sizes
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(Zero [0] _ mem) -> (Copy mem)
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(Zero [0] _ mem) -> mem
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(Zero [1] destptr mem) -> (MOVBstore destptr (MOVBconst <config.Frontend().TypeInt8()> [0]) mem)
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(Zero [2] destptr mem) -> (MOVWstore destptr (MOVWconst <config.Frontend().TypeInt16()> [0]) mem)
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(Zero [4] destptr mem) -> (MOVLstore destptr (MOVLconst <config.Frontend().TypeInt32()> [0]) mem)
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@ -440,14 +440,14 @@
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(ANDLconst [c] _) && int32(c)==0 -> (MOVLconst [0])
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(ANDWconst [c] _) && int16(c)==0 -> (MOVWconst [0])
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(ANDBconst [c] _) && int8(c)==0 -> (MOVBconst [0])
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(ANDQconst [-1] x) -> (Copy x)
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(ANDLconst [c] x) && int32(c)==-1 -> (Copy x)
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(ANDWconst [c] x) && int16(c)==-1 -> (Copy x)
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(ANDBconst [c] x) && int8(c)==-1 -> (Copy x)
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(ORQconst [0] x) -> (Copy x)
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(ORLconst [c] x) && int32(c)==0 -> (Copy x)
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(ORWconst [c] x) && int16(c)==0 -> (Copy x)
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(ORBconst [c] x) && int8(c)==0 -> (Copy x)
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(ANDQconst [-1] x) -> x
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(ANDLconst [c] x) && int32(c)==-1 -> x
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(ANDWconst [c] x) && int16(c)==-1 -> x
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(ANDBconst [c] x) && int8(c)==-1 -> x
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(ORQconst [0] x) -> x
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(ORLconst [c] x) && int32(c)==0 -> x
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(ORWconst [c] x) && int16(c)==0 -> x
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(ORBconst [c] x) && int8(c)==0 -> x
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(ORQconst [-1] _) -> (MOVQconst [-1])
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(ORLconst [c] _) && int32(c)==-1 -> (MOVLconst [-1])
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(ORWconst [c] _) && int16(c)==-1 -> (MOVWconst [-1])
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@ -505,14 +505,14 @@
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(SUBL x x) -> (MOVLconst [0])
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(SUBW x x) -> (MOVWconst [0])
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(SUBB x x) -> (MOVBconst [0])
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(ANDQ x x) -> (Copy x)
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(ANDL x x) -> (Copy x)
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(ANDW x x) -> (Copy x)
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(ANDB x x) -> (Copy x)
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(ORQ x x) -> (Copy x)
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(ORL x x) -> (Copy x)
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(ORW x x) -> (Copy x)
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(ORB x x) -> (Copy x)
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(ANDQ x x) -> x
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(ANDL x x) -> x
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(ANDW x x) -> x
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(ANDB x x) -> x
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(ORQ x x) -> x
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(ORL x x) -> x
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(ORW x x) -> x
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(ORB x x) -> x
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(XORQ x x) -> (MOVQconst [0])
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(XORL x x) -> (MOVLconst [0])
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(XORW x x) -> (MOVWconst [0])
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@ -34,10 +34,10 @@
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(Neq16 x x) -> (ConstBool {false})
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(Neq8 x x) -> (ConstBool {false})
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(Com8 (Com8 x)) -> (Copy x)
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(Com16 (Com16 x)) -> (Copy x)
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(Com32 (Com32 x)) -> (Copy x)
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(Com64 (Com64 x)) -> (Copy x)
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(Com8 (Com8 x)) -> x
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(Com16 (Com16 x)) -> x
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(Com32 (Com32 x)) -> x
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(Com64 (Com64 x)) -> x
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// tear apart slices
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// TODO: anything that generates a slice needs to go in here.
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@ -376,11 +376,15 @@ func genResult0(w io.Writer, arch arch, result string, alloc *int, top bool) str
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if result[0] != '(' {
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// variable
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if top {
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fmt.Fprintf(w, "v.Op = %s.Op\n", result)
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fmt.Fprintf(w, "v.AuxInt = %s.AuxInt\n", result)
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fmt.Fprintf(w, "v.Aux = %s.Aux\n", result)
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// It in not safe in general to move a variable between blocks
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// (and particularly not a phi node).
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// Introduce a copy.
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fmt.Fprintf(w, "v.Op = OpCopy\n")
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fmt.Fprintf(w, "v.AuxInt = 0\n")
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fmt.Fprintf(w, "v.Aux = nil\n")
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fmt.Fprintf(w, "v.resetArgs()\n")
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fmt.Fprintf(w, "v.AddArgs(%s.Args...)\n", result)
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fmt.Fprintf(w, "v.Type = %s.Type\n", result)
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fmt.Fprintf(w, "v.AddArg(%s)\n", result)
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}
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return result
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}
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@ -325,21 +325,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ADDQconst [0] x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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if v.AuxInt != 0 {
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goto end288952f259d4a1842f1e8d5c389b3f28
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goto end03d9f5a3e153048b0afa781401e2a849
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}
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x := v.Args[0]
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto end288952f259d4a1842f1e8d5c389b3f28
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end288952f259d4a1842f1e8d5c389b3f28:
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goto end03d9f5a3e153048b0afa781401e2a849
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end03d9f5a3e153048b0afa781401e2a849:
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;
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// match: (ADDQconst [c] (MOVQconst [d]))
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// cond:
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@ -566,21 +567,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDB x x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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x := v.Args[0]
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if v.Args[1] != x {
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goto end1c1e017efac06c84c72f2d09d6afadc0
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goto endb8ff272a1456513da708603abe37541c
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto end1c1e017efac06c84c72f2d09d6afadc0
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end1c1e017efac06c84c72f2d09d6afadc0:
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goto endb8ff272a1456513da708603abe37541c
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endb8ff272a1456513da708603abe37541c:
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;
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case OpAMD64ANDBconst:
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// match: (ANDBconst [c] _)
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@ -603,22 +605,23 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDBconst [c] x)
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// cond: int8(c)==-1
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// result: (Copy x)
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// result: x
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{
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c := v.AuxInt
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x := v.Args[0]
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if !(int8(c) == -1) {
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goto ende983ac58fd9834f2c8503e92e45d83db
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goto enda0b78503c204c8225de1433949a71fe4
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto ende983ac58fd9834f2c8503e92e45d83db
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ende983ac58fd9834f2c8503e92e45d83db:
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goto enda0b78503c204c8225de1433949a71fe4
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enda0b78503c204c8225de1433949a71fe4:
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;
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// match: (ANDBconst [c] (MOVBconst [d]))
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// cond:
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@ -682,21 +685,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDL x x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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x := v.Args[0]
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if v.Args[1] != x {
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goto end0ff7ad77f6811c422b0b588f48474ddc
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goto enddfb08a0d0c262854db3905cb323388c7
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto end0ff7ad77f6811c422b0b588f48474ddc
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end0ff7ad77f6811c422b0b588f48474ddc:
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goto enddfb08a0d0c262854db3905cb323388c7
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enddfb08a0d0c262854db3905cb323388c7:
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;
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case OpAMD64ANDLconst:
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// match: (ANDLconst [c] _)
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@ -719,22 +723,23 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDLconst [c] x)
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// cond: int32(c)==-1
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// result: (Copy x)
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// result: x
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{
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c := v.AuxInt
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x := v.Args[0]
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if !(int32(c) == -1) {
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goto enda670b6e074269a5e1fcbdaec05596a28
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goto end0e852ae30bb8289d6ffee0c9267e3e0c
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto enda670b6e074269a5e1fcbdaec05596a28
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enda670b6e074269a5e1fcbdaec05596a28:
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goto end0e852ae30bb8289d6ffee0c9267e3e0c
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end0e852ae30bb8289d6ffee0c9267e3e0c:
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;
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// match: (ANDLconst [c] (MOVLconst [d]))
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// cond:
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@ -804,21 +809,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDQ x x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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x := v.Args[0]
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if v.Args[1] != x {
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goto endb54d87d7a12ba29a9d19b808319ab055
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goto end06b5ec19efdd4e79f03a5e4a2c3c3427
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto endb54d87d7a12ba29a9d19b808319ab055
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endb54d87d7a12ba29a9d19b808319ab055:
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goto end06b5ec19efdd4e79f03a5e4a2c3c3427
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end06b5ec19efdd4e79f03a5e4a2c3c3427:
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;
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case OpAMD64ANDQconst:
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// match: (ANDQconst [0] _)
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@ -840,21 +846,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDQconst [-1] x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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if v.AuxInt != -1 {
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goto end993d44ced14a02748f2d0e77230e8991
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goto endb542c4b42ab94a7bedb32dec8f610d67
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}
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x := v.Args[0]
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
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}
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goto end993d44ced14a02748f2d0e77230e8991
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end993d44ced14a02748f2d0e77230e8991:
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goto endb542c4b42ab94a7bedb32dec8f610d67
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endb542c4b42ab94a7bedb32dec8f610d67:
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;
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// match: (ANDQconst [c] (MOVQconst [d]))
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// cond:
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@ -958,21 +965,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
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;
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// match: (ANDW x x)
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// cond:
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// result: (Copy x)
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// result: x
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{
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x := v.Args[0]
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if v.Args[1] != x {
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goto end08c49eea4ac769acc212ebd833934be8
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goto end3a26cf52dd1b77f07cc9e005760dbb11
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}
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v.Op = OpCopy
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v.AuxInt = 0
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v.Aux = nil
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v.resetArgs()
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v.Type = x.Type
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v.AddArg(x)
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return true
|
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}
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goto end08c49eea4ac769acc212ebd833934be8
|
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end08c49eea4ac769acc212ebd833934be8:
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goto end3a26cf52dd1b77f07cc9e005760dbb11
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end3a26cf52dd1b77f07cc9e005760dbb11:
|
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;
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case OpAMD64ANDWconst:
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// match: (ANDWconst [c] _)
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@ -995,22 +1003,23 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
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;
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// match: (ANDWconst [c] x)
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// cond: int16(c)==-1
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// result: (Copy x)
|
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// result: x
|
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{
|
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c := v.AuxInt
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x := v.Args[0]
|
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if !(int16(c) == -1) {
|
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goto ende01402832ff041ac3e12fc077684125f
|
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goto endfb111c3afa8c5c4040fa6000fadee810
|
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}
|
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v.Op = OpCopy
|
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v.AuxInt = 0
|
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v.Aux = nil
|
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v.resetArgs()
|
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v.Type = x.Type
|
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v.AddArg(x)
|
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return true
|
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}
|
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goto ende01402832ff041ac3e12fc077684125f
|
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ende01402832ff041ac3e12fc077684125f:
|
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goto endfb111c3afa8c5c4040fa6000fadee810
|
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endfb111c3afa8c5c4040fa6000fadee810:
|
||||
;
|
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// match: (ANDWconst [c] (MOVWconst [d]))
|
||||
// cond:
|
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@ -3554,21 +3563,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
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;
|
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// match: (MULQconst [1] x)
|
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// cond:
|
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// result: (Copy x)
|
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// result: x
|
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{
|
||||
if v.AuxInt != 1 {
|
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goto endd7217a7c6311fc7a3e0736a1b0b5be73
|
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goto end0b527e71db2b288b2841a1f757aa580d
|
||||
}
|
||||
x := v.Args[0]
|
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v.Op = OpCopy
|
||||
v.AuxInt = 0
|
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v.Aux = nil
|
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v.resetArgs()
|
||||
v.Type = x.Type
|
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v.AddArg(x)
|
||||
return true
|
||||
}
|
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goto endd7217a7c6311fc7a3e0736a1b0b5be73
|
||||
endd7217a7c6311fc7a3e0736a1b0b5be73:
|
||||
goto end0b527e71db2b288b2841a1f757aa580d
|
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end0b527e71db2b288b2841a1f757aa580d:
|
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;
|
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// match: (MULQconst [3] x)
|
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// cond:
|
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@ -4223,41 +4233,43 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
;
|
||||
// match: (ORB x x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
if v.Args[1] != x {
|
||||
goto endd53ede4886d67f4b4ae970316a2febb4
|
||||
goto enddca5ce800a9eca157f243cb2fdb1408a
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto endd53ede4886d67f4b4ae970316a2febb4
|
||||
endd53ede4886d67f4b4ae970316a2febb4:
|
||||
goto enddca5ce800a9eca157f243cb2fdb1408a
|
||||
enddca5ce800a9eca157f243cb2fdb1408a:
|
||||
;
|
||||
case OpAMD64ORBconst:
|
||||
// match: (ORBconst [c] x)
|
||||
// cond: int8(c)==0
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
c := v.AuxInt
|
||||
x := v.Args[0]
|
||||
if !(int8(c) == 0) {
|
||||
goto end3b9f6d1a1a523595d101f89410f453a1
|
||||
goto end565f78e3a843dc73943b59227b39a1b3
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end3b9f6d1a1a523595d101f89410f453a1
|
||||
end3b9f6d1a1a523595d101f89410f453a1:
|
||||
goto end565f78e3a843dc73943b59227b39a1b3
|
||||
end565f78e3a843dc73943b59227b39a1b3:
|
||||
;
|
||||
// match: (ORBconst [c] _)
|
||||
// cond: int8(c)==-1
|
||||
@ -4339,41 +4351,43 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
;
|
||||
// match: (ORL x x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
if v.Args[1] != x {
|
||||
goto end556b9151cacb9db2803373ce10829b2a
|
||||
goto end2dd719b68f4938777ef0d820aab93659
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end556b9151cacb9db2803373ce10829b2a
|
||||
end556b9151cacb9db2803373ce10829b2a:
|
||||
goto end2dd719b68f4938777ef0d820aab93659
|
||||
end2dd719b68f4938777ef0d820aab93659:
|
||||
;
|
||||
case OpAMD64ORLconst:
|
||||
// match: (ORLconst [c] x)
|
||||
// cond: int32(c)==0
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
c := v.AuxInt
|
||||
x := v.Args[0]
|
||||
if !(int32(c) == 0) {
|
||||
goto end800adaf85f4201ebf7a0e38dc1768c86
|
||||
goto end5b52623a724e8a7167c71289fb7192f1
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end800adaf85f4201ebf7a0e38dc1768c86
|
||||
end800adaf85f4201ebf7a0e38dc1768c86:
|
||||
goto end5b52623a724e8a7167c71289fb7192f1
|
||||
end5b52623a724e8a7167c71289fb7192f1:
|
||||
;
|
||||
// match: (ORLconst [c] _)
|
||||
// cond: int32(c)==-1
|
||||
@ -4461,40 +4475,42 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
;
|
||||
// match: (ORQ x x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
if v.Args[1] != x {
|
||||
goto endcad306e115ea011a2a70f4e4e5440de4
|
||||
goto end47a27d30b82db576978c5a3a57b520fb
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto endcad306e115ea011a2a70f4e4e5440de4
|
||||
endcad306e115ea011a2a70f4e4e5440de4:
|
||||
goto end47a27d30b82db576978c5a3a57b520fb
|
||||
end47a27d30b82db576978c5a3a57b520fb:
|
||||
;
|
||||
case OpAMD64ORQconst:
|
||||
// match: (ORQconst [0] x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
if v.AuxInt != 0 {
|
||||
goto end98a286fc50bc6cf8ca9f5af523e2b5cd
|
||||
goto end44534da6b9ce98d33fad7e20f0be1fbd
|
||||
}
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end98a286fc50bc6cf8ca9f5af523e2b5cd
|
||||
end98a286fc50bc6cf8ca9f5af523e2b5cd:
|
||||
goto end44534da6b9ce98d33fad7e20f0be1fbd
|
||||
end44534da6b9ce98d33fad7e20f0be1fbd:
|
||||
;
|
||||
// match: (ORQconst [-1] _)
|
||||
// cond:
|
||||
@ -4575,41 +4591,43 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
;
|
||||
// match: (ORW x x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
if v.Args[1] != x {
|
||||
goto end7c69794f4a3a6ada00bd868f743d86f8
|
||||
goto endc6a23b64e541dc9cfc6a90fd7028e8c1
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end7c69794f4a3a6ada00bd868f743d86f8
|
||||
end7c69794f4a3a6ada00bd868f743d86f8:
|
||||
goto endc6a23b64e541dc9cfc6a90fd7028e8c1
|
||||
endc6a23b64e541dc9cfc6a90fd7028e8c1:
|
||||
;
|
||||
case OpAMD64ORWconst:
|
||||
// match: (ORWconst [c] x)
|
||||
// cond: int16(c)==0
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
c := v.AuxInt
|
||||
x := v.Args[0]
|
||||
if !(int16(c) == 0) {
|
||||
goto end61a4fd5308425b3eafd158f13aaf8f13
|
||||
goto endbbbdec9091c8b4c58e587eac8a43402d
|
||||
}
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end61a4fd5308425b3eafd158f13aaf8f13
|
||||
end61a4fd5308425b3eafd158f13aaf8f13:
|
||||
goto endbbbdec9091c8b4c58e587eac8a43402d
|
||||
endbbbdec9091c8b4c58e587eac8a43402d:
|
||||
;
|
||||
// match: (ORWconst [c] _)
|
||||
// cond: int16(c)==-1
|
||||
@ -7326,98 +7344,104 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
case OpTrunc16to8:
|
||||
// match: (Trunc16to8 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end18a19bd8418f9079595720df0874e90a
|
||||
end18a19bd8418f9079595720df0874e90a:
|
||||
goto end8e2f5e0a6e3a06423c077747de6c2bdd
|
||||
end8e2f5e0a6e3a06423c077747de6c2bdd:
|
||||
;
|
||||
case OpTrunc32to16:
|
||||
// match: (Trunc32to16 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end217b00780a8b1139d068680ed9d61cb0
|
||||
end217b00780a8b1139d068680ed9d61cb0:
|
||||
goto end5bed0e3a3c1c6374d86beb5a4397708c
|
||||
end5bed0e3a3c1c6374d86beb5a4397708c:
|
||||
;
|
||||
case OpTrunc32to8:
|
||||
// match: (Trunc32to8 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end05d10e0a1c707d66b11b2d342634efd0
|
||||
end05d10e0a1c707d66b11b2d342634efd0:
|
||||
goto endef0b8032ce91979ce6cd0004260c04ee
|
||||
endef0b8032ce91979ce6cd0004260c04ee:
|
||||
;
|
||||
case OpTrunc64to16:
|
||||
// match: (Trunc64to16 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end4623ae65eb76feca3936354f22d45fa7
|
||||
end4623ae65eb76feca3936354f22d45fa7:
|
||||
goto endd32fd6e0ce970c212835e6f71c3dcbfd
|
||||
endd32fd6e0ce970c212835e6f71c3dcbfd:
|
||||
;
|
||||
case OpTrunc64to32:
|
||||
// match: (Trunc64to32 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end93e0b16b58a717a3e4f5c2ca67b6be87
|
||||
end93e0b16b58a717a3e4f5c2ca67b6be87:
|
||||
goto end1212c4e84153210aff7fd630fb3e1883
|
||||
end1212c4e84153210aff7fd630fb3e1883:
|
||||
;
|
||||
case OpTrunc64to8:
|
||||
// match: (Trunc64to8 x)
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
x := v.Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto endc4c1a1b86edd0f082339d17eb5096ad0
|
||||
endc4c1a1b86edd0f082339d17eb5096ad0:
|
||||
goto end734f017d4b2810ca2288f7037365824c
|
||||
end734f017d4b2810ca2288f7037365824c:
|
||||
;
|
||||
case OpAMD64XORB:
|
||||
// match: (XORB x (MOVBconst [c]))
|
||||
@ -7816,21 +7840,22 @@ func rewriteValueAMD64(v *Value, config *Config) bool {
|
||||
case OpZero:
|
||||
// match: (Zero [0] _ mem)
|
||||
// cond:
|
||||
// result: (Copy mem)
|
||||
// result: mem
|
||||
{
|
||||
if v.AuxInt != 0 {
|
||||
goto endb85a34a7d102b0e0d801454f437db5bf
|
||||
goto endc9a38a60f0322f93682daa824611272c
|
||||
}
|
||||
mem := v.Args[1]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = mem.Type
|
||||
v.AddArg(mem)
|
||||
return true
|
||||
}
|
||||
goto endb85a34a7d102b0e0d801454f437db5bf
|
||||
endb85a34a7d102b0e0d801454f437db5bf:
|
||||
goto endc9a38a60f0322f93682daa824611272c
|
||||
endc9a38a60f0322f93682daa824611272c:
|
||||
;
|
||||
// match: (Zero [1] destptr mem)
|
||||
// cond:
|
||||
|
||||
@ -80,78 +80,82 @@ func rewriteValuegeneric(v *Value, config *Config) bool {
|
||||
case OpCom16:
|
||||
// match: (Com16 (Com16 x))
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
if v.Args[0].Op != OpCom16 {
|
||||
goto end388d572e5a72fd87a07da5cab243ebdc
|
||||
goto end1ea17710dd4dd7ba4e710e0e4c7b5a56
|
||||
}
|
||||
x := v.Args[0].Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end388d572e5a72fd87a07da5cab243ebdc
|
||||
end388d572e5a72fd87a07da5cab243ebdc:
|
||||
goto end1ea17710dd4dd7ba4e710e0e4c7b5a56
|
||||
end1ea17710dd4dd7ba4e710e0e4c7b5a56:
|
||||
;
|
||||
case OpCom32:
|
||||
// match: (Com32 (Com32 x))
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
if v.Args[0].Op != OpCom32 {
|
||||
goto end5b2b3834acc7313649923604f685e7c5
|
||||
goto end9a04ed536496e292c27bef4414128cbf
|
||||
}
|
||||
x := v.Args[0].Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end5b2b3834acc7313649923604f685e7c5
|
||||
end5b2b3834acc7313649923604f685e7c5:
|
||||
goto end9a04ed536496e292c27bef4414128cbf
|
||||
end9a04ed536496e292c27bef4414128cbf:
|
||||
;
|
||||
case OpCom64:
|
||||
// match: (Com64 (Com64 x))
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
if v.Args[0].Op != OpCom64 {
|
||||
goto end6d6312f25d06a327d92f028b1ce50566
|
||||
goto ended44e29d5968f0f7b86972b7bf417ab3
|
||||
}
|
||||
x := v.Args[0].Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end6d6312f25d06a327d92f028b1ce50566
|
||||
end6d6312f25d06a327d92f028b1ce50566:
|
||||
goto ended44e29d5968f0f7b86972b7bf417ab3
|
||||
ended44e29d5968f0f7b86972b7bf417ab3:
|
||||
;
|
||||
case OpCom8:
|
||||
// match: (Com8 (Com8 x))
|
||||
// cond:
|
||||
// result: (Copy x)
|
||||
// result: x
|
||||
{
|
||||
if v.Args[0].Op != OpCom8 {
|
||||
goto end70cbd85c4b8e82c170dba7c23f8bc0f3
|
||||
goto end4d92ff3ba567d9afd38fc9ca113602ad
|
||||
}
|
||||
x := v.Args[0].Args[0]
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.Type = x.Type
|
||||
v.AddArg(x)
|
||||
return true
|
||||
}
|
||||
goto end70cbd85c4b8e82c170dba7c23f8bc0f3
|
||||
end70cbd85c4b8e82c170dba7c23f8bc0f3:
|
||||
goto end4d92ff3ba567d9afd38fc9ca113602ad
|
||||
end4d92ff3ba567d9afd38fc9ca113602ad:
|
||||
;
|
||||
case OpConstString:
|
||||
// match: (ConstString {s})
|
||||
@ -716,11 +720,12 @@ func rewriteValuegeneric(v *Value, config *Config) bool {
|
||||
goto end0d922460b7e5ca88324034f4bd6c027c
|
||||
}
|
||||
len := v.Args[0].Args[1]
|
||||
v.Op = len.Op
|
||||
v.AuxInt = len.AuxInt
|
||||
v.Aux = len.Aux
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.AddArgs(len.Args...)
|
||||
v.Type = len.Type
|
||||
v.AddArg(len)
|
||||
return true
|
||||
}
|
||||
goto end0d922460b7e5ca88324034f4bd6c027c
|
||||
@ -735,11 +740,12 @@ func rewriteValuegeneric(v *Value, config *Config) bool {
|
||||
goto end061edc5d85c73ad909089af2556d9380
|
||||
}
|
||||
ptr := v.Args[0].Args[0]
|
||||
v.Op = ptr.Op
|
||||
v.AuxInt = ptr.AuxInt
|
||||
v.Aux = ptr.Aux
|
||||
v.Op = OpCopy
|
||||
v.AuxInt = 0
|
||||
v.Aux = nil
|
||||
v.resetArgs()
|
||||
v.AddArgs(ptr.Args...)
|
||||
v.Type = ptr.Type
|
||||
v.AddArg(ptr)
|
||||
return true
|
||||
}
|
||||
goto end061edc5d85c73ad909089af2556d9380
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user