diff options
| author | mkuvyrkov <mkuvyrkov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-10-16 09:13:47 +0000 |
|---|---|---|
| committer | mkuvyrkov <mkuvyrkov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-10-16 09:13:47 +0000 |
| commit | 77ad8e5a2b836f3635c77a9492894547ca88c9aa (patch) | |
| tree | f33444e9bf6a5e0115d66e6ac3261973224f32ca /gcc/targhooks.c | |
| parent | 308b8ddc23ef0d46e7b45b19c1de0cbf900f022d (diff) | |
2007-10-16 Paolo Bonzini <bonzini@gnu.org>
Maxim Kuvyrkov <maxim@codesourcery.com>
* target.h (unspec_may_trap_p): New target hook.
* target-def.h (TARGET_UNSPEC_MAY_TRAP_P): New macro.
* targhooks.c (default_unspec_may_trap_p): Default implementation of
the hook.
* targhooks.h (default_unspec_may_trap_p): Declare it.
* doc/tm.texi (TARGET_UNSPEC_MAY_TRAP_P): Document new hook.
* rtlanal.c (may_trap_p_1): Use new hook. Make global.
* rtl.h (may_trap_p_1): Declare.
* config/ia64/ia64.c (ia64_unspec_may_trap_p): New function to
override default hook implementation.
(TARGET_UNSPEC_MAY_TRAP_P): Override default implementation of the
hook.
* gcc.target/ia64/20040709-2.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@129378 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/targhooks.c')
| -rw-r--r-- | gcc/targhooks.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/targhooks.c b/gcc/targhooks.c index b4469403c53..bfd1905e1d3 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -75,6 +75,26 @@ default_external_libcall (rtx fun ATTRIBUTE_UNUSED) #endif } +int +default_unspec_may_trap_p (const_rtx x, unsigned flags) +{ + int i; + + if (GET_CODE (x) == UNSPEC_VOLATILE + /* Any floating arithmetic may trap. */ + || (SCALAR_FLOAT_MODE_P (GET_MODE (x)) + && flag_trapping_math)) + return 1; + + for (i = 0; i < XVECLEN (x, 0); ++i) + { + if (may_trap_p_1 (XVECEXP (x, 0, i), flags)) + return 1; + } + + return 0; +} + enum machine_mode default_cc_modes_compatible (enum machine_mode m1, enum machine_mode m2) { |