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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-11-01 13:30:34 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-11-01 13:30:34 +0000 |
| commit | 7aaba298fe122dfd40bb612623df89db08499f8b (patch) | |
| tree | 0ae2545c05dfb383c6e30bf2152244a320722bec /gcc/machmode.h | |
| parent | b3ad445f853ab7ca0da6216ff1bebfd6f90425f5 (diff) | |
| download | gcc-7aaba298fe122dfd40bb612623df89db08499f8b.zip gcc-7aaba298fe122dfd40bb612623df89db08499f8b.tar.gz gcc-7aaba298fe122dfd40bb612623df89db08499f8b.tar.bz2 | |
Add an is_narrower_int_mode helper function
This patch adds a function for testing whether an arbitrary mode X
is an integer mode that is narrower than integer mode Y. This is
useful for code like expand_float and expand_fix that could in
principle handle vectors as well as scalars.
2017-11-01 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* machmode.h (is_narrower_int_mode): New function
* optabs.c (expand_float, expand_fix): Use it.
* dwarf2out.c (rotate_loc_descriptor): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r254305
Diffstat (limited to 'gcc/machmode.h')
| -rw-r--r-- | gcc/machmode.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/machmode.h b/gcc/machmode.h index f5e5baa..f53e7b3 100644 --- a/gcc/machmode.h +++ b/gcc/machmode.h @@ -893,6 +893,17 @@ is_complex_float_mode (machine_mode mode, T *cmode) return false; } +/* Return true if MODE is a scalar integer mode with a precision + smaller than LIMIT's precision. */ + +inline bool +is_narrower_int_mode (machine_mode mode, scalar_int_mode limit) +{ + scalar_int_mode int_mode; + return (is_a <scalar_int_mode> (mode, &int_mode) + && GET_MODE_PRECISION (int_mode) < GET_MODE_PRECISION (limit)); +} + namespace mode_iterator { /* Start mode iterator *ITER at the first mode in class MCLASS, if any. */ |