Adding upstream version 1.22.1.upstream/1.22.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/reflect/float32reg_ppc64x.s b/src/reflect/float32reg_ppc64x.s
new file mode 100644
index 0000000..a4deb18
--- /dev/null
+++ b/src/reflect/float32reg_ppc64x.s
@@ -0,0 +1,30 @@
+// Copyright 2021 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.
+
+//go:build ppc64 || ppc64le
+
+#include "textflag.h"
+
+// On PPC64, the float32 becomes a float64
+// when loaded in a register, different from
+// other platforms. These functions are
+// needed to ensure correct conversions on PPC64.
+
+// Convert float32->uint64
+TEXT ·archFloat32ToReg(SB),NOSPLIT,$0-16
+	FMOVS	val+0(FP), F1
+	FMOVD	F1, ret+8(FP)
+	RET
+
+// Convert uint64->float32
+TEXT ·archFloat32FromReg(SB),NOSPLIT,$0-12
+	FMOVD	reg+0(FP), F1
+	// Normally a float64->float32 conversion
+	// would need rounding, but that is not needed
+	// here since the uint64 was originally converted
+	// from float32, and should be avoided to
+	// preserve SNaN values.
+	FMOVS	F1, ret+8(FP)
+	RET
+