Merge "Merge branch 'dev.ssa' into mergebranch"

1 files changed, 57 insertions, 0 deletions

diff --git a/src/cmd/compile/internal/gc/testdata/regalloc_ssa.go b/src/cmd/compile/internal/gc/testdata/regalloc_ssa.go
new file mode 100644
index 0000000000..f752692952
--- /dev/null
+++ b/src/cmd/compile/internal/gc/testdata/regalloc_ssa.go
@@ -0,0 +1,57 @@
+// run
+
+// Copyright 2015 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.
+
+// Tests phi implementation
+
+package main
+
+func phiOverwrite_ssa() int {
+	var n int
+	for i := 0; i < 10; i++ {
+		if i == 6 {
+			break
+		}
+		n = i
+	}
+	return n
+}
+
+func phiOverwrite() {
+	want := 5
+	got := phiOverwrite_ssa()
+	if got != want {
+		println("phiOverwrite_ssa()=", want, ", got", got)
+		failed = true
+	}
+}
+
+func phiOverwriteBig_ssa() int {
+	var a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z int
+	a = 1
+	for idx := 0; idx < 26; idx++ {
+		a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z = b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a
+	}
+	return a*1 + b*2 + c*3 + d*4 + e*5 + f*6 + g*7 + h*8 + i*9 + j*10 + k*11 + l*12 + m*13 + n*14 + o*15 + p*16 + q*17 + r*18 + s*19 + t*20 + u*21 + v*22 + w*23 + x*24 + y*25 + z*26
+}
+
+func phiOverwriteBig() {
+	want := 1
+	got := phiOverwriteBig_ssa()
+	if got != want {
+		println("phiOverwriteBig_ssa()=", want, ", got", got)
+		failed = true
+	}
+}
+
+var failed = false
+
+func main() {
+	phiOverwrite()
+	phiOverwriteBig()
+	if failed {
+		panic("failed")
+	}
+}