Attachment 28986 Details for Bug 23576 – 0001-ARM-workaround-for-gcc-bug-in-vshll_n_u8-intrinsic.patch

[patch] 0001-ARM-workaround-for-gcc-bug-in-vshll_n_u8-intrinsic.patch

0001-ARM-workaround-for-gcc-bug-in-vshll_n_u8-intrinsic.patch (text/plain), 1.01 KB, created by Siarhei Siamashka on 2009-08-28 12:48:00 UTC

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Creator: Siarhei Siamashka

Created: 2009-08-28 12:48:00 UTC

Size: 1.01 KB

patch

obsolete

>From 7b7860d61fb1526acdf010dd8fd644bbf1396b9e Mon Sep 17 00:00:00 2001
>From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
>Date: Fri, 28 Aug 2009 22:34:21 +0300
>Subject: [PATCH] ARM: workaround for gcc bug in vshll_n_u8 intrinsic
>
>Some versions of gcc (cs2009q1, 4.4.1) incorrectly reject
>shift operand having value >= 8, claiming that it is out of
>range. So inline assembly is used as a workaround.
>---
> pixman/pixman-arm-neon.c |    6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
>diff --git a/pixman/pixman-arm-neon.c b/pixman/pixman-arm-neon.c
>index 4125d1b..3e7f566 100644
>--- a/pixman/pixman-arm-neon.c
>+++ b/pixman/pixman-arm-neon.c
>@@ -64,6 +64,12 @@ unpack0565 (uint16x8_t rgb)
>     return res;
> }
> 
>+#ifdef USE_GCC_INLINE_ASM
>+/* Some versions of gcc have problems with vshll_n_u8 intrinsic (Bug 23576) */
>+#define vshll_n_u8(a, n) ({ uint16x8_t r; \
>+    asm ("vshll.u8 %q0, %P1, %2\n" : "=w" (r) : "w" (a), "i" (n)); r; })
>+#endif
>+
> static force_inline uint16x8_t
> pack0565 (uint8x8x4_t s)
> {
>-- 
>1.5.4.3
>

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