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[dev.ssa] cmd/compile: implement non-numeric comparisons

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The only slice/interface comparisons that reach
the backend are comparisons to nil.

Funcs, maps, and channels are references types,
so pointer equality is enough.

Change-Id: I60a71da46a36202e9bd62ed370ab7d7f2e2800e7
Reviewed-on: https://go-review.googlesource.com/12715
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2015-07-27 13:17:45 -07:00
parent edff881ce5
commit 9ca24fcda8
7 changed files with 213 additions and 18 deletions
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104
src/cmd/compile/internal/ssa/rewritegeneric.go
View file

@ -129,6 +129,58 @@ func rewriteValuegeneric(v *Value, config *Config) bool {
goto enda6f250a3c775ae5a239ece8074b46cea
enda6f250a3c775ae5a239ece8074b46cea:
;
case OpEqFat:
// match: (EqFat x y)
// cond: x.Op == OpConst && y.Op != OpConst
// result: (EqFat y x)
{
x := v.Args[0]
y := v.Args[1]
if !(x.Op == OpConst && y.Op != OpConst) {
goto end4540bddcf0fc8e4b71fac6e9edbb8eec
}
v.Op = OpEqFat
v.AuxInt = 0
v.Aux = nil
v.resetArgs()
v.AddArg(y)
v.AddArg(x)
return true
}
goto end4540bddcf0fc8e4b71fac6e9edbb8eec
end4540bddcf0fc8e4b71fac6e9edbb8eec:
;
// match: (EqFat (Load ptr mem) y)
// cond: y.Op == OpConst
// result: (EqPtr (Load <config.Uintptr> ptr mem) (Const <config.Uintptr> [0]))
{
if v.Args[0].Op != OpLoad {
goto end779b0e24e33d8eff668c368b90387caa
}
ptr := v.Args[0].Args[0]
mem := v.Args[0].Args[1]
y := v.Args[1]
if !(y.Op == OpConst) {
goto end779b0e24e33d8eff668c368b90387caa
}
v.Op = OpEqPtr
v.AuxInt = 0
v.Aux = nil
v.resetArgs()
v0 := v.Block.NewValue0(v.Line, OpLoad, TypeInvalid)
v0.Type = config.Uintptr
v0.AddArg(ptr)
v0.AddArg(mem)
v.AddArg(v0)
v1 := v.Block.NewValue0(v.Line, OpConst, TypeInvalid)
v1.Type = config.Uintptr
v1.AuxInt = 0
v.AddArg(v1)
return true
}
goto end779b0e24e33d8eff668c368b90387caa
end779b0e24e33d8eff668c368b90387caa:
;
case OpIsInBounds:
// match: (IsInBounds (Const [c]) (Const [d]))
// cond:
@ -255,6 +307,58 @@ func rewriteValuegeneric(v *Value, config *Config) bool {
goto end10541de7ea2bce703c1e372ac9a271e7
end10541de7ea2bce703c1e372ac9a271e7:
;
case OpNeqFat:
// match: (NeqFat x y)
// cond: x.Op == OpConst && y.Op != OpConst
// result: (NeqFat y x)
{
x := v.Args[0]
y := v.Args[1]
if !(x.Op == OpConst && y.Op != OpConst) {
goto end5d2a9d3aa52fb6866825f35ac65c7cfd
}
v.Op = OpNeqFat
v.AuxInt = 0
v.Aux = nil
v.resetArgs()
v.AddArg(y)
v.AddArg(x)
return true
}
goto end5d2a9d3aa52fb6866825f35ac65c7cfd
end5d2a9d3aa52fb6866825f35ac65c7cfd:
;
// match: (NeqFat (Load ptr mem) y)
// cond: y.Op == OpConst
// result: (NeqPtr (Load <config.Uintptr> ptr mem) (Const <config.Uintptr> [0]))
{
if v.Args[0].Op != OpLoad {
goto endf2f18052c2d999a7ac883c441c3b7ade
}
ptr := v.Args[0].Args[0]
mem := v.Args[0].Args[1]
y := v.Args[1]
if !(y.Op == OpConst) {
goto endf2f18052c2d999a7ac883c441c3b7ade
}
v.Op = OpNeqPtr
v.AuxInt = 0
v.Aux = nil
v.resetArgs()
v0 := v.Block.NewValue0(v.Line, OpLoad, TypeInvalid)
v0.Type = config.Uintptr
v0.AddArg(ptr)
v0.AddArg(mem)
v.AddArg(v0)
v1 := v.Block.NewValue0(v.Line, OpConst, TypeInvalid)
v1.Type = config.Uintptr
v1.AuxInt = 0
v.AddArg(v1)
return true
}
goto endf2f18052c2d999a7ac883c441c3b7ade
endf2f18052c2d999a7ac883c441c3b7ade:
;
case OpPtrIndex:
// match: (PtrIndex <t> ptr idx)
// cond: