35 lines
1.0 KiB
Diff
35 lines
1.0 KiB
Diff
From ad090272c831b5c62f0b310c776e76e3b1ffc88d Mon Sep 17 00:00:00 2001
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From: Iain Lane <iain.lane@canonical.com>
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Date: Fri, 15 Nov 2013 14:17:03 +0000
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Subject: [PATCH] Prevent the NEON check in configure from passing under
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aarch64.
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The test verifies that the NEON C intrinsics work, but the rest of the
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codebase uses lots of direct ARMv7 NEON assembly. The same intrinsics
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work in A64, but the assembly is slightly different.
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Prevent the check from passing so that we don't use this where it won't
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work.
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Patch originally by William Grant <wgrant@ubuntu.com>
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https://bugzilla.gnome.org/show_bug.cgi?id=712367
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---
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configure.ac | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/configure.ac b/configure.ac
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index e5c223f..0495371 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -190,6 +190,7 @@ AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[
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#include <arm_neon.h>
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int32x4_t testfunc(int16_t *a, int16_t *b) {
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+ asm volatile ("vmull.s16 q0, d0, d0" : : : "q0");
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return vmull_s16(vld1_s16(a), vld1_s16(b));
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}
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]])],
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--
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1.8.4.3
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