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authorMans Rullgard <mans@mansr.com>2012-08-07 17:43:29 +0100
committerMans Rullgard <mans@mansr.com>2012-08-07 21:13:30 +0100
commitec9d2c15c17ada4ebb5c8ca335a71a1f330dcaf9 (patch)
tree1ba65f9a25e479e3fa389cd09c3b3340fd2dde96 /configure
parent4ab26cb4cc9af2ab2199105aa273aa23e1f27911 (diff)
ARM: use Q/R inline asm operand modifiers only if supported
Some compilers do not support the Q/R modifiers used to access the low/high parts of a 64-bit register pair. Check for this and disable all uses of it when not supported. Fixes bug #337. Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure2
1 files changed, 2 insertions, 0 deletions
diff --git a/configure b/configure
index f43206849c..da4036ec7b 100755
--- a/configure
+++ b/configure
@@ -1077,6 +1077,7 @@ HAVE_LIST="
alsa_asoundlib_h
altivec_h
arpa_inet_h
+ asm_mod_q
asm_mod_y
attribute_may_alias
attribute_packed
@@ -2792,6 +2793,7 @@ EOF
enabled neon && check_asm neon '"vadd.i16 q0, q0, q0"'
enabled vfpv3 && check_asm vfpv3 '"vmov.f32 s0, #1.0"'
+ check_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
enabled_all armv6t2 shared !pic && enable_pic