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| author | Torbjorn Granlund <torbjorng@google.com> | 2014-10-13 21:35:14 +0200 |
|---|---|---|
| committer | Torbjorn Granlund <torbjorng@google.com> | 2014-10-13 21:35:14 +0200 |
| commit | 96824aa5d000c9060a18e9c1958aea6626cfc423 (patch) | |
| tree | fd4cbcdefbcc2e986438765963e7d7209fed12b3 /acinclude.m4 | |
| parent | 910225167cac751ba35362c24d6b5d9752d03779 (diff) | |
| download | gmp-96824aa5d000c9060a18e9c1958aea6626cfc423.tar.gz | |
(freebsd hacked gcc): Test for crash-prone FreeBSD gcc.
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index a1997f110..e9a28e47c 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -634,6 +634,20 @@ int dummy; #endif ]) +GMP_PROG_CC_WORKS_PART([$1], [freebsd hacked gcc], +[/* Provokes an ICE on i386-freebsd with the FreeBSD-hacked gcc, under + -O2 -march=amdfam10. We call helper functions here "open" and "close" in + order for linking to succeed. */ + +#if defined (__GNUC__) && ! defined (__cplusplus) +int open(int*,int*,int);void*close(int);void g(int*rp,int*up,int un){ +__builtin_expect(un<=0x7f00,1)?__builtin_alloca(un):close(un);if(__builtin_clzl +(up[un])){open(rp,up,un);while(1){if(rp[un-1]!=0)break;un--;}}} +#else +int dummy; +#endif +]) + GMP_PROG_CC_WORKS_PART_MAIN([$1], [mpn_lshift_com optimization], [/* The following is mis-compiled by HP ia-64 cc version cc: HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003] |