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From 4e99677795977faccd1f28ac8fb8b3cfd72c4dcd Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sat, 2 Feb 2019 22:09:20 -0800
Subject: [PATCH] chromium: Check for __ARM_FP & 2 before using __fp16
The __fp16 type denotes half-precision (16-bit) floating-point.
The recommended way to test for this hardware support is to test bit 1 in __ARM_FP
and
If 16-bit floating-point is available, one of __ARM_FP16_FORMAT_IEEE and
__ARM_FP16_FORMAT_ALTERNATIVE will be defined to indicate the format in use
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
chromium/third_party/skia/src/opts/SkRasterPipeline_opts.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/chromium/third_party/skia/src/opts/SkRasterPipeline_opts.h b/chromium/third_party/skia/src/opts/SkRasterPipeline_opts.h
index 33d9e7aa39f..aaefa5371ae 100644
--- a/chromium/third_party/skia/src/opts/SkRasterPipeline_opts.h
+++ b/chromium/third_party/skia/src/opts/SkRasterPipeline_opts.h
@@ -679,7 +679,7 @@ SI F from_half(U16 h) {
}
SI U16 to_half(F f) {
-#if defined(__ARM_FP16_FORMAT_IEEE)
+#if defined(__ARM_FP16_FORMAT_IEEE) && defined(__ARM_NEON__) && (__ARM_FP & 2)
__fp16 fp16 = __fp16(f);
U16 u16;
memcpy(&u16, &fp16, sizeof(U16));
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