From: Robert Griesemer <gri@golang.org>
Date: Thu, 22 Oct 2015 21:14:41 +0000 (-0700)
Subject: cmd/compile/internal/gc: remove special handling for -0.0
X-Git-Tag: go1.6beta1~737
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=79a3b561b5497db2caeb76ea18cac852981b7b87;p=gostls13.git

cmd/compile/internal/gc: remove special handling for -0.0

Per the latest spec change, Go doesn't have -0 constants.

Change-Id: Ic2bcdc3bf507d121ed204f30f6744bb8764202c0
Reviewed-on: https://go-review.googlesource.com/16232
Reviewed-by: Chris Manghane <cmang@golang.org>
---

diff --git a/src/cmd/compile/internal/gc/bexport.go b/src/cmd/compile/internal/gc/bexport.go
index 292e3b95b2..1b2a520f0b 100644
--- a/src/cmd/compile/internal/gc/bexport.go
+++ b/src/cmd/compile/internal/gc/bexport.go
@@ -713,20 +713,11 @@ func (p *exporter) value(x Val) {
 }
 
 func (p *exporter) float(x *Mpflt) {
-	// extract sign, treat -0 as < 0
+	// extract sign (there is no -0)
 	f := &x.Val
 	sign := f.Sign()
 	if sign == 0 {
-		// ±0
-		// TODO(gri) remove 'if' below if #12577 gets accepted
-		if f.Signbit() {
-			// -0 (uncommon)
-			p.int(-1)
-			p.int(0)
-			p.string("")
-			return
-		}
-		// +0
+		// x == 0
 		p.int(0)
 		return
 	}