From 7b7860d61fb1526acdf010dd8fd644bbf1396b9e Mon Sep 17 00:00:00 2001 From: Siarhei Siamashka 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