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| author | Georg-Johann Lay <avr@gjlay.de> | 2013-01-30 11:04:30 +0000 |
|---|---|---|
| committer | Georg-Johann Lay <gjl@gcc.gnu.org> | 2013-01-30 11:04:30 +0000 |
| commit | cc06c01d0a29c6e1466feba98d8ae3bf20193822 (patch) | |
| tree | 7cbebdbd492e700058cfc647470eb384b37f121e /gcc/fixed-value.c | |
| parent | d394a308e34df7dfe56e1b3995a2622e1ed19068 (diff) | |
re PR tree-optimization/56064 (Optimize VIEW_CONVERT_EXPR with FIXED_CST)
gcc/
PR tree-optimization/56064
* fixed-value.c (fixed_from_double_int): New function.
* fixed-value.h (fixed_from_double_int): New prototype.
(const_fixed_from_double_int): New static inline function.
* fold-const.c (native_interpret_fixed): New static function.
(native_interpret_expr) <FIXED_POINT_TYPE>: Use it.
(can_native_interpret_type_p) <FIXED_POINT_TYPE>: Return true.
(native_encode_fixed): New static function.
(native_encode_expr) <FIXED_CST>: Use it.
(native_interpret_int): Move double_int worker code to...
* double-int.c (double_int::from_buffer): ...this new static method.
* double-int.h (double_int::from_buffer): Prototype it.
gcc/testsuite/
PR tree-optimization/56064
* gcc.dg/fixed-point/view-convert.c: New test.
From-SVN: r195574
Diffstat (limited to 'gcc/fixed-value.c')
| -rw-r--r-- | gcc/fixed-value.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/fixed-value.c b/gcc/fixed-value.c index f917775ce88..2e97a492619 100644 --- a/gcc/fixed-value.c +++ b/gcc/fixed-value.c @@ -81,6 +81,24 @@ check_real_for_fixed_mode (REAL_VALUE_TYPE *real_value, enum machine_mode mode) return FIXED_OK; } + +/* Construct a CONST_FIXED from a bit payload and machine mode MODE. + The bits in PAYLOAD are used verbatim. */ + +FIXED_VALUE_TYPE +fixed_from_double_int (double_int payload, enum machine_mode mode) +{ + FIXED_VALUE_TYPE value; + + gcc_assert (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_DOUBLE_INT); + + value.data = payload; + value.mode = mode; + + return value; +} + + /* Initialize from a decimal or hexadecimal string. */ void |