diff options
Diffstat (limited to 'src/cmd/compile/internal/gc/walk.go')
| -rw-r--r-- | src/cmd/compile/internal/gc/walk.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/gc/walk.go b/src/cmd/compile/internal/gc/walk.go index a814ee4bf7..7909072340 100644 --- a/src/cmd/compile/internal/gc/walk.go +++ b/src/cmd/compile/internal/gc/walk.go @@ -1272,6 +1272,13 @@ opswitch: } if cs != nil { cmp := Op(n.Etype) + // Our comparison below assumes that the non-constant string + // is on the left hand side, so rewrite "" cmp x to x cmp "". + // See issue 24817. + if Isconst(n.Left, CTSTR) { + cmp = brrev(cmp) + } + // maxRewriteLen was chosen empirically. // It is the value that minimizes cmd/go file size // across most architectures. |