cmd/internal/gc: clean up bgen
This cleanup is in anticipation of implementing
jump-free booleans (CL 2284) and zero-aware
comparisons (issue 10381).
No functional changes. Passes toolstash -cmp.
Change-Id: I50f394c60fa2927e177d7fc85b75085060a9e912
Reviewed-on: https://go-review.googlesource.com/8738
Reviewed-by: Russ Cox <rsc@golang.org>
diff --git a/src/cmd/internal/gc/subr.go b/src/cmd/internal/gc/subr.go
index c18f1e9..5b883d8 100644
--- a/src/cmd/internal/gc/subr.go
+++ b/src/cmd/internal/gc/subr.go
@@ -1796,10 +1796,8 @@
return *getinarg(t)
}
-/*
- * return !(op)
- * eg == <=> !=
- */
+// Brcom returns !(op).
+// For example, Brcom(==) is !=.
func Brcom(a int) int {
switch a {
case OEQ:
@@ -1815,15 +1813,12 @@
case OGE:
return OLT
}
-
- Fatal("brcom: no com for %v\n", Oconv(int(a), 0))
+ Fatal("brcom: no com for %v\n", Oconv(a, 0))
return a
}
-/*
- * return reverse(op)
- * eg a op b <=> b r(op) a
- */
+// Brrev returns reverse(op).
+// For example, Brrev(<) is >.
func Brrev(a int) int {
switch a {
case OEQ:
@@ -1839,8 +1834,7 @@
case OGE:
return OLE
}
-
- Fatal("brcom: no rev for %v\n", Oconv(int(a), 0))
+ Fatal("brrev: no rev for %v\n", Oconv(a, 0))
return a
}
