go/analysis/passes/asmdecl: remove amd64p32 support

Updates golang/go#30439

Change-Id: I46c7de8d16c3470f2f20a4d0e03b74bb38c8aff0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/199500
Run-TryBot: Brad Fitzpatrick <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Andrew Bonventre <[email protected]>

Author: bradfitz

go/analysis/passes/asmdecl/asmdecl.go

@@ -79,7 +79,6 @@ var (
 	asmArchArm      = asmArch{name: "arm", bigEndian: false, stack: "R13", lr: true}
 	asmArchArm64    = asmArch{name: "arm64", bigEndian: false, stack: "RSP", lr: true}
 	asmArchAmd64    = asmArch{name: "amd64", bigEndian: false, stack: "SP", lr: false}
-	asmArchAmd64p32 = asmArch{name: "amd64p32", bigEndian: false, stack: "SP", lr: false}
 	asmArchMips     = asmArch{name: "mips", bigEndian: true, stack: "R29", lr: true}
 	asmArchMipsLE   = asmArch{name: "mipsle", bigEndian: false, stack: "R29", lr: true}
 	asmArchMips64   = asmArch{name: "mips64", bigEndian: true, stack: "R29", lr: true}
@@ -94,7 +93,6 @@ var (
 		&asmArchArm,
 		&asmArchArm64,
 		&asmArchAmd64,
-		&asmArchAmd64p32,
 		&asmArchMips,
 		&asmArchMipsLE,
 		&asmArchMips64,
@@ -635,9 +633,6 @@ func asmCheckVar(badf func(string, ...interface{}), fn *asmFunc, line, expr stri
 	case "amd64.LEAQ":
 		dst = 8
 		addr = true
-	case "amd64p32.LEAL":
-		dst = 4
-		addr = true
 	default:
 		switch fn.arch.name {
 		case "386", "amd64":