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[dev.ssa] cmd/compile: get rid of +0.0 hack

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The conversion from -0.0 to +0.0 happens inside mpgetflt now.
The SSA code doesn't need this fix any more.

Change-Id: I6cd4f4a4e75b13cf284ebbb95b08af050ed9891c
Reviewed-on: https://go-review.googlesource.com/18942
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
This commit is contained in:
Keith Randall 2016-01-25 20:26:06 -08:00
parent 3c26c0db39
commit 733bf6ef67
1 changed files with 6 additions and 10 deletions
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16
src/cmd/compile/internal/gc/ssa.go
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@ -1347,11 +1347,9 @@ func (s *state) expr(n *Node) *ssa.Value {
f := n.Val().U.(*Mpflt) f := n.Val().U.(*Mpflt)
switch n.Type.Size() { switch n.Type.Size() {
case 4: case 4:
// -0.0 literals need to be treated as if they were 0.0, adding 0.0 here return s.constFloat32(n.Type, mpgetflt32(f))
// accomplishes this while not affecting other values.
return s.constFloat32(n.Type, mpgetflt32(f)+0.0)
case 8: case 8:
return s.constFloat64(n.Type, mpgetflt(f)+0.0) return s.constFloat64(n.Type, mpgetflt(f))
default: default:
s.Fatalf("bad float size %d", n.Type.Size()) s.Fatalf("bad float size %d", n.Type.Size())
return nil return nil
@ -1364,18 +1362,16 @@ func (s *state) expr(n *Node) *ssa.Value {
case 8: case 8:
{ {
pt := Types[TFLOAT32] pt := Types[TFLOAT32]
// -0.0 literals need to be treated as if they were 0.0, adding 0.0 here
// accomplishes this while not affecting other values.
return s.newValue2(ssa.OpComplexMake, n.Type, return s.newValue2(ssa.OpComplexMake, n.Type,
s.constFloat32(pt, mpgetflt32(r)+0.0), s.constFloat32(pt, mpgetflt32(r)),
s.constFloat32(pt, mpgetflt32(i)+0.0)) s.constFloat32(pt, mpgetflt32(i)))
} }
case 16: case 16:
{ {
pt := Types[TFLOAT64] pt := Types[TFLOAT64]
return s.newValue2(ssa.OpComplexMake, n.Type, return s.newValue2(ssa.OpComplexMake, n.Type,
s.constFloat64(pt, mpgetflt(r)+0.0), s.constFloat64(pt, mpgetflt(r)),
s.constFloat64(pt, mpgetflt(i)+0.0)) s.constFloat64(pt, mpgetflt(i)))
} }
default: default:
s.Fatalf("bad float size %d", n.Type.Size()) s.Fatalf("bad float size %d", n.Type.Size())