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cmd/compile: cleanup OREAL/OIMAG constant folding

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Based on suggestion from gri@ on golang.org/cl/166980.

Passes toolstash-check.

Change-Id: I79b66bb09b5635f3a9daecaa5d605b661a0ab108
Reviewed-on: https://go-review.googlesource.com/c/go/+/167501
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2019-03-13 15:51:15 -07:00
parent 870cfe6484
commit 2d21bf4252
1 changed files with 8 additions and 8 deletions
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16
src/cmd/compile/internal/gc/const.go
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@ -676,17 +676,17 @@ func evconst(n *Node) {
case OREAL, OIMAG:
if nl.Op == OLITERAL {
var re, im *Mpflt
switch consttype(nl) {
case CTINT, CTRUNE:
switch u := nl.Val().U.(type) {
case *Mpint:
re = newMpflt()
re.SetInt(nl.Val().U.(*Mpint))
re.SetInt(u)
// im = 0
case CTFLT:
re = nl.Val().U.(*Mpflt)
case *Mpflt:
re = u
// im = 0
case CTCPLX:
re = &nl.Val().U.(*Mpcplx).Real
im = &nl.Val().U.(*Mpcplx).Imag
case *Mpcplx:
re = &u.Real
im = &u.Imag
default:
Fatalf("impossible")
}