From: Todd Neal <todd@tneal.org>
Date: Wed, 26 Aug 2015 00:21:45 +0000 (-0500)
Subject: [dev.ssa] cmd/compile: support float zeroing
X-Git-Tag: go1.7beta1~1623^2^2~243
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=752fe4dcb5c033c56dc3ab76ba912efa82df4d9e;p=gostls13.git

[dev.ssa] cmd/compile: support float zeroing

Change-Id: Iacd302350cf0a8a8164d937e5c4ac55e6a07d380
Reviewed-on: https://go-review.googlesource.com/13942
Reviewed-by: David Chase <drchase@google.com>
---

diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index ce20e7bdfd..a0ad2caeaa 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -1646,6 +1646,15 @@ func (s *state) zeroVal(t *Type) *ssa.Value {
 		default:
 			s.Fatalf("bad sized integer type %s", t)
 		}
+	case t.IsFloat():
+		switch t.Size() {
+		case 4:
+			return s.constFloat32(t, 0)
+		case 8:
+			return s.constFloat64(t, 0)
+		default:
+			s.Fatalf("bad sized float type %s", t)
+		}
 	case t.IsString():
 		return s.entryNewValue0A(ssa.OpConstString, t, "")
 	case t.IsPtr():