lxdream.org :: lxdream/acinclude.m4 r1147:e04e4af64626

filename	acinclude.m4
changeset	1147:e04e4af64626
prev	985:52e64faac752
next	1198:407659e01ef0
author	nkeynes
date	Wed Nov 10 08:37:42 2010 +1000 (13 years ago)
permissions	-rw-r--r--
last change	Add chain pointer to the xlat cache, so that we can maintain multiple blocks for the same address. This prevents thrashing in cases where we would other keep retranslating the same blocks over and over again due to varying xlat_sh4_mode values

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     1.1 --- a/acinclude.m4	Tue Feb 24 11:47:41 2009 +0000
     1.2 +++ b/acinclude.m4	Wed Nov 10 08:37:42 2010 +1000
     1.3 @@ -18,6 +18,27 @@
     1.4     $2 ])
     1.5  ])
     1.6  
     1.7 +# AC_CHECK_FORCEINLINE([if-ok],[if-notok])
     1.8 +# Test if the compiler recognizes __attribute__((always_inline))
     1.9 +# -----------------------
    1.10 +AC_DEFUN([AC_CHECK_FORCEINLINE], [
    1.11 +AC_MSG_CHECKING([support for force inlining]);
    1.12 +AC_COMPILE_IFELSE([
    1.13 +  AC_LANG_SOURCE([[
    1.14 +static int __attribute__((always_inline)) foo(int a, int b) { return a+b; }
    1.15 +
    1.16 +int main(int argc, char *argv[])
    1.17 +{
    1.18 +   return foo( 1, 2 ) == 3 ? 0 : 1;
    1.19 +}]])], [ 
    1.20 +   FORCEINLINE="__attribute__((always_inline))"
    1.21 +   AC_MSG_RESULT([$FORCEINLINE])
    1.22 +   $1 ], [ 
    1.23 +   FORCEINLINE=""
    1.24 +   AC_MSG_RESULT([no])
    1.25 +   $2 ])
    1.26 +])
    1.27 +
    1.28  # AC_CHECK_FRAME_ADDRESS([if-ok],[if-notok])
    1.29  # Test if the compiler will let us modify the return address on the stack
    1.30  # via __builtin_frame_address()