8g: respect ullman numbers in float comparison
Fixes #602.
R=ken2
CC=golang-dev
https://golang.org/cl/212045
diff --git a/test/fixedbugs/bug258.go b/test/fixedbugs/bug258.go
new file mode 100644
index 0000000..8984df5
--- /dev/null
+++ b/test/fixedbugs/bug258.go
@@ -0,0 +1,33 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "math"
+
+func f() float64 {
+ math.Pow(2, 2)
+ return 1
+}
+
+func main() {
+ for i := 0; i < 10; i++ {
+ // 386 float register bug used to load constant before call
+ if -5 < f() {
+ } else {
+ println("BUG 1")
+ return
+ }
+ if f() > -7 {
+ } else {
+ println("BUG 2")
+ }
+
+ if math.Pow(2, 3) != 8 {
+ println("BUG 3")
+ }
+ }
+}
