cmd/vet/all: enable AIX checks

Fixes #27985

Change-Id: I2f3d06ced9da9fc56f30f1285a8d393e689c29ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/169019
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/cmd/vet/all/main.go

@@ -209,12 +209,6 @@ func (p platform) vet() {
 		return
 	}
 
-	if p.os == "aix" && p.arch == "ppc64" {
-		// TODO(aix): enable as soon as the aix/ppc64 port has fully landed
-		fmt.Println("skipping aix/ppc64")
-		return
-	}
-
 	var buf bytes.Buffer
 	fmt.Fprintf(&buf, "go run main.go -p %s\n", p)
 

src/cmd/vet/all/whitelist/aix_ppc64.txt

+// aix/ppc64-specific vet whitelist. See readme.txt for details.
+
+runtime/asm_ppc64x.s: [ppc64] sigreturn: function sigreturn missing Go declaration
+runtime/sys_aix_ppc64.s: [ppc64] callCfunction: function callCfunction missing Go declaration
+runtime/sys_aix_ppc64.s: [ppc64] _asmsyscall6: function _asmsyscall6 missing Go declaration
+runtime/sys_aix_ppc64.s: [ppc64] _sigtramp: function _sigtramp missing Go declaration
+runtime/sys_aix_ppc64.s: [ppc64] _sigtramp: use of 16(R1) points beyond argument frame
+runtime/sys_aix_ppc64.s: [ppc64] _tstart: function _tstart missing Go declaration