Reduces the decoder stack use by removing the pcm_silk buffer in fixed-point
[opus.git] / m4 / as-gcc-inline-assembly.m4
1 dnl as-gcc-inline-assembly.m4 0.1.0
2
3 dnl autostars m4 macro for detection of gcc inline assembly
4
5 dnl David Schleef <ds@schleef.org>
6
7 dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
8 dnl Tries to compile with the given CFLAGS.
9 dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
10 dnl and ACTION-IF-NOT-ACCEPTED otherwise.
11
12 AC_DEFUN([AS_GCC_INLINE_ASSEMBLY],
13 [
14   AC_MSG_CHECKING([if compiler supports gcc-style inline assembly])
15
16   AC_TRY_COMPILE([], [
17 #ifdef __GNUC_MINOR__
18 #if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004
19 #error GCC before 3.4 has critical bugs compiling inline assembly
20 #endif
21 #endif
22 __asm__ (""::) ], [flag_ok=yes], [flag_ok=no])
23
24   if test "X$flag_ok" = Xyes ; then
25     $1
26     true
27   else
28     $2
29     true
30   fi
31   AC_MSG_RESULT([$flag_ok])
32 ])
33
34 AC_DEFUN([AS_ASM_ARM_NEON],
35 [
36   AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
37
38   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("vorr d0,d0,d0")])],
39                     [AC_MSG_RESULT([yes])
40                      $1],
41                     [AC_MSG_RESULT([no])
42                      $2])
43 ])
44
45 AC_DEFUN([AS_ASM_ARM_NEON_FORCE],
46 [
47   AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
48
49   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0")])],
50                     [AC_MSG_RESULT([yes])
51                      $1],
52                     [AC_MSG_RESULT([no])
53                      $2])
54 ])
55
56 AC_DEFUN([AS_ASM_ARM_MEDIA],
57 [
58   AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
59
60   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("shadd8 r3,r3,r3")])],
61                     [AC_MSG_RESULT([yes])
62                      $1],
63                     [AC_MSG_RESULT([no])
64                      $2])
65 ])
66
67 AC_DEFUN([AS_ASM_ARM_MEDIA_FORCE],
68 [
69   AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
70
71   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3")])],
72                     [AC_MSG_RESULT([yes])
73                      $1],
74                     [AC_MSG_RESULT([no])
75                      $2])
76 ])
77
78 AC_DEFUN([AS_ASM_ARM_EDSP],
79 [
80   AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
81
82   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("qadd r3,r3,r3")])],
83                     [AC_MSG_RESULT([yes])
84                      $1],
85                     [AC_MSG_RESULT([no])
86                      $2])
87 ])
88
89 AC_DEFUN([AS_ASM_ARM_EDSP_FORCE],
90 [
91   AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
92
93   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3")])],
94                     [AC_MSG_RESULT([yes])
95                      $1],
96                     [AC_MSG_RESULT([no])
97                      $2])
98 ])