GCC Middle and Back End API Reference
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GCC Middle and Back End API Reference
Namespaces
Data Structures
Files
File List
addresses.h
alias.c
alias.h
alloc-pool.c
alloc-pool.h
asan.c
asan.h
attribs.c
auto-inc-dec.c
basic-block.h
bb-reorder.c
bb-reorder.h
bitmap.c
bitmap.h
bt-load.c
builtins.c
builtins.h
caller-save.c
calls.c
cfg.c
cfganal.c
cfgbuild.c
cfgcleanup.c
cfgexpand.c
cfghooks.c
cfghooks.h
cfgloop.c
cfgloop.h
cfgloopanal.c
cfgloopmanip.c
cfgrtl.c
cgraph.c
cgraph.h
cgraphbuild.c
cgraphclones.c
cgraphunit.c
cilk-common.c
cilk.h
collect2-aix.c
collect2-aix.h
collect2.c
collect2.h
combine-stack-adj.c
combine.c
compare-elim.c
conditions.h
context.c
context.h
convert.c
convert.h
coretypes.h
coverage.c
coverage.h
cppbuiltin.c
cppbuiltin.h
cppdefault.c
cppdefault.h
cprop.c
cse.c
cselib.c
cselib.h
data-streamer-in.c
data-streamer-out.c
data-streamer.c
data-streamer.h
dbgcnt.c
dbgcnt.h
dbxout.c
dbxout.h
dce.c
dce.h
ddg.c
ddg.h
debug.c
debug.h
defaults.h
df-core.c
df-problems.c
df-scan.c
df.h
dfp.c
dfp.h
diagnostic-color.c
diagnostic-color.h
diagnostic-core.h
diagnostic.c
diagnostic.h
dojump.c
dominance.c
domwalk.c
domwalk.h
double-int.c
double-int.h
dse.c
dumpfile.c
dumpfile.h
dwarf2asm.c
dwarf2asm.h
dwarf2cfi.c
dwarf2out.c
dwarf2out.h
emit-rtl.c
emit-rtl.h
errors.c
errors.h
et-forest.c
et-forest.h
except.c
except.h
explow.c
expmed.c
expmed.h
expr.c
expr.h
file-find.c
file-find.h
final.c
fixed-value.c
fixed-value.h
flag-types.h
flags.h
fold-const.c
foo.c
fp-test.c
function.c
function.h
fwprop.c
gcc-ar.c
gcc-plugin.h
gcc.c
gcc.h
gcov-dump.c
gcov-io.c
gcov-io.h
gcov-iov.c
gcov.c
gcse.c
gcse.h
gdbhooks.py
genattr-common.c
genattr.c
genattrtab.c
genautomata.c
gencheck.c
genchecksum.c
gencodes.c
genconditions.c
genconfig.c
genconstants.c
genemit.c
genenums.c
genextract.c
genflags.c
gengenrtl.c
gengtype-parse.c
gengtype-state.c
gengtype.c
gengtype.h
genhooks.c
genmddeps.c
genmddump.c
genmodes.c
genopinit.c
genoutput.c
genpeep.c
genpreds.c
genrecog.c
gensupport.c
gensupport.h
ggc-common.c
ggc-internal.h
ggc-none.c
ggc-page.c
ggc.h
gimple-builder.c
gimple-builder.h
gimple-fold.c
gimple-fold.h
gimple-iterator.c
gimple-low.c
gimple-low.h
gimple-pretty-print.c
gimple-pretty-print.h
gimple-ssa-strength-reduction.c
gimple-ssa.h
gimple-streamer-in.c
gimple-streamer-out.c
gimple-streamer.h
gimple.c
gimple.h
gimplify.c
glimits.h
godump.c
graph.c
graph.h
graphds.c
graphds.h
graphite-blocking.c
graphite-clast-to-gimple.c
graphite-clast-to-gimple.h
graphite-dependences.c
graphite-htab.h
graphite-interchange.c
graphite-optimize-isl.c
graphite-poly.c
graphite-poly.h
graphite-scop-detection.c
graphite-scop-detection.h
graphite-sese-to-poly.c
graphite-sese-to-poly.h
graphite.c
gstab.h
gsyms.h
gsyslimits.h
haifa-sched.c
hard-reg-set.h
hash-table.c
hash-table.h
highlev-plugin-common.h
hooks.c
hooks.h
host-default.c
hosthooks-def.h
hosthooks.h
hw-doloop.c
hw-doloop.h
hwint.c
hwint.h
ifcvt.c
incpath.c
incpath.h
init-regs.c
input.c
input.h
insn-addr.h
internal-fn.c
internal-fn.h
intl.c
intl.h
ipa-cp.c
ipa-devirt.c
ipa-inline-analysis.c
ipa-inline-transform.c
ipa-inline.c
ipa-inline.h
ipa-profile.c
ipa-prop.c
ipa-prop.h
ipa-pure-const.c
ipa-ref-inline.h
ipa-ref.c
ipa-ref.h
ipa-reference.c
ipa-reference.h
ipa-split.c
ipa-utils.c
ipa-utils.h
ipa.c
ira-build.c
ira-color.c
ira-conflicts.c
ira-costs.c
ira-emit.c
ira-int.h
ira-lives.c
ira.c
ira.h
is-a.h
jump.c
langhooks-def.h
langhooks.c
langhooks.h
lcm.c
libfuncs.h
limitx.h
limity.h
lists.c
loop-doloop.c
loop-init.c
loop-invariant.c
loop-iv.c
loop-unroll.c
loop-unswitch.c
lower-subreg.c
lower-subreg.h
lra-assigns.c
lra-coalesce.c
lra-constraints.c
lra-eliminations.c
lra-int.h
lra-lives.c
lra-spills.c
lra.c
lra.h
lto-cgraph.c
lto-compress.c
lto-compress.h
lto-opts.c
lto-section-in.c
lto-section-out.c
lto-streamer-in.c
lto-streamer-out.c
lto-streamer.c
lto-streamer.h
lto-wrapper.c
machmode.h
main.c
mcf.c
mode-switching.c
modulo-sched.c
omega.c
omega.h
omp-low.c
omp-low.h
optabs.c
optabs.h
opts-common.c
opts-diagnostic.h
opts-global.c
opts.c
opts.h
output.h
params.c
params.h
pass_manager.h
passes.c
plugin.c
plugin.h
pointer-set.c
pointer-set.h
postreload-gcse.c
postreload.c
predict.c
predict.h
prefix.c
prefix.h
pretty-print.c
pretty-print.h
print-rtl.c
print-tree.c
profile.c
profile.h
read-md.c
read-md.h
read-rtl.c
real.c
real.h
realmpfr.c
realmpfr.h
recog.c
recog.h
ree.c
reg-stack.c
regcprop.c
reginfo.c
regrename.c
regrename.h
regs.h
regset.h
regstat.c
reload.c
reload.h
reload1.c
reorg.c
resource.c
resource.h
rtl-error.c
rtl-error.h
rtl.c
rtl.h
rtlanal.c
rtlhooks-def.h
rtlhooks.c
sbitmap.c
sbitmap.h
sched-deps.c
sched-ebb.c
sched-int.h
sched-rgn.c
sched-vis.c
sdbout.c
sdbout.h
sel-sched-dump.c
sel-sched-dump.h
sel-sched-ir.c
sel-sched-ir.h
sel-sched.c
sel-sched.h
sese.c
sese.h
simplify-rtx.c
sparseset.c
sparseset.h
sreal.c
sreal.h
ssa-iterators.h
stack-ptr-mod.c
statistics.c
statistics.h
stmt.c
stor-layout.c
store-motion.c
streamer-hooks.c
streamer-hooks.h
stringpool.c
symtab.c
system.h
target-def.h
target-globals.c
target-globals.h
target-hooks-macros.h
target.h
targhooks.c
targhooks.h
timevar.c
timevar.h
tlink.c
toplev.c
toplev.h
tracer.c
trans-mem.c
trans-mem.h
tree-affine.c
tree-affine.h
tree-browser.c
tree-call-cdce.c
tree-cfg.c
tree-cfg.h
tree-cfgcleanup.c
tree-cfgcleanup.h
tree-chrec.c
tree-chrec.h
tree-complex.c
tree-core.h
tree-data-ref.c
tree-data-ref.h
tree-dfa.c
tree-dfa.h
tree-diagnostic.c
tree-diagnostic.h
tree-dump.c
tree-dump.h
tree-eh.c
tree-eh.h
tree-emutls.c
tree-hasher.h
tree-if-conv.c
tree-inline.c
tree-inline.h
tree-into-ssa.c
tree-into-ssa.h
tree-iterator.c
tree-iterator.h
tree-loop-distribution.c
tree-nested.c
tree-nrv.c
tree-object-size.c
tree-outof-ssa.c
tree-outof-ssa.h
tree-parloops.c
tree-parloops.h
tree-pass.h
tree-phinodes.c
tree-phinodes.h
tree-predcom.c
tree-pretty-print.c
tree-pretty-print.h
tree-profile.c
tree-scalar-evolution.c
tree-scalar-evolution.h
tree-sra.c
tree-ssa-address.c
tree-ssa-address.h
tree-ssa-alias.c
tree-ssa-alias.h
tree-ssa-ccp.c
tree-ssa-coalesce.c
tree-ssa-coalesce.h
tree-ssa-copy.c
tree-ssa-copyrename.c
tree-ssa-dce.c
tree-ssa-dom.c
tree-ssa-dom.h
tree-ssa-dse.c
tree-ssa-forwprop.c
tree-ssa-ifcombine.c
tree-ssa-live.c
tree-ssa-live.h
tree-ssa-loop-ch.c
tree-ssa-loop-im.c
tree-ssa-loop-ivcanon.c
tree-ssa-loop-ivopts.c
tree-ssa-loop-ivopts.h
tree-ssa-loop-manip.c
tree-ssa-loop-manip.h
tree-ssa-loop-niter.c
tree-ssa-loop-niter.h
tree-ssa-loop-prefetch.c
tree-ssa-loop-unswitch.c
tree-ssa-loop.c
tree-ssa-loop.h
tree-ssa-math-opts.c
tree-ssa-operands.c
tree-ssa-operands.h
tree-ssa-phiopt.c
tree-ssa-phiprop.c
tree-ssa-pre.c
tree-ssa-propagate.c
tree-ssa-propagate.h
tree-ssa-reassoc.c
tree-ssa-sccvn.c
tree-ssa-sccvn.h
tree-ssa-sink.c
tree-ssa-strlen.c
tree-ssa-structalias.c
tree-ssa-tail-merge.c
tree-ssa-ter.c
tree-ssa-ter.h
tree-ssa-threadedge.c
tree-ssa-threadedge.h
tree-ssa-threadupdate.c
tree-ssa-threadupdate.h
tree-ssa-uncprop.c
tree-ssa-uninit.c
tree-ssa.c
tree-ssa.h
tree-ssanames.c
tree-ssanames.h
tree-stdarg.c
tree-stdarg.h
tree-streamer-in.c
tree-streamer-out.c
tree-streamer.c
tree-streamer.h
tree-switch-conversion.c
tree-tailcall.c
tree-vect-data-refs.c
tree-vect-generic.c
tree-vect-loop-manip.c
tree-vect-loop.c
tree-vect-patterns.c
tree-vect-slp.c
tree-vect-stmts.c
tree-vectorizer.c
tree-vectorizer.h
tree-vrp.c
tree.c
tree.h
tsan.c
tsan.h
tsystem.h
typeclass.h
ubsan.c
ubsan.h
valtrack.c
valtrack.h
value-prof.c
value-prof.h
var-tracking.c
varasm.c
varpool.c
vec.c
vec.h
version.c
version.h
vmsdbg.h
vmsdbgout.c
vtable-verify.c
vtable-verify.h
web.c
xcoff.h
xcoffout.c
xcoffout.h
Globals
fixed-value.h
Go to the documentation of this file.
1
/* Fixed-point arithmetic support.
2
Copyright (C) 2006-2013 Free Software Foundation, Inc.
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4
This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
7
the terms of the GNU General Public License as published by the Free
8
Software Foundation; either version 3, or (at your option) any later
9
version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12
WARRANTY; without even the implied warranty of MERCHANTABILITY or
13
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14
for more details.
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You should have received a copy of the GNU General Public License
17
along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_FIXED_VALUE_H
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#define GCC_FIXED_VALUE_H
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#include "
machmode.h
"
24
#include "
real.h
"
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#include "
double-int.h
"
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struct
GTY(())
fixed_value
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{
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double_int
data
;
/* Store data up to 2 wide integers. */
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enum
machine_mode mode;
/* Use machine mode to know IBIT and FBIT. */
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};
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#define FIXED_VALUE_TYPE struct fixed_value
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#define MAX_FCONST0 18
/* For storing 18 fixed-point zeros per
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fract, ufract, accum, and uaccum modes . */
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#define MAX_FCONST1 8
/* For storing 8 fixed-point ones per accum
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and uaccum modes. */
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/* Constant fixed-point values 0 and 1. */
40
extern
FIXED_VALUE_TYPE
fconst0
[
MAX_FCONST0
];
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extern
FIXED_VALUE_TYPE
fconst1
[
MAX_FCONST1
];
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/* Macros to access fconst0 and fconst1 via machine modes. */
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#define FCONST0(mode) fconst0[mode - QQmode]
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#define FCONST1(mode) fconst1[mode - HAmode]
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/* Return a CONST_FIXED with value R and mode M. */
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#define CONST_FIXED_FROM_FIXED_VALUE(r, m) \
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const_fixed_from_fixed_value (r, m)
50
extern
rtx
const_fixed_from_fixed_value
(
FIXED_VALUE_TYPE
,
enum
machine_mode);
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/* Construct a FIXED_VALUE from a bit payload and machine mode MODE.
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The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
54
extern
FIXED_VALUE_TYPE
fixed_from_double_int
(
double_int
,
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enum
machine_mode);
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/* Return a CONST_FIXED from a bit payload and machine mode MODE.
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The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */
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static
inline
rtx
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const_fixed_from_double_int
(
double_int
payload,
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enum
machine_mode mode)
62
{
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return
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const_fixed_from_fixed_value
(
fixed_from_double_int
(payload, mode),
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mode);
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}
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/* Initialize from a decimal or hexadecimal string. */
69
extern
void
fixed_from_string
(
FIXED_VALUE_TYPE
*,
const
char
*,
70
enum
machine_mode);
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/* In tree.c: wrap up a FIXED_VALUE_TYPE in a tree node. */
73
extern
tree
build_fixed
(
tree
,
FIXED_VALUE_TYPE
);
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/* Extend or truncate to a new mode. */
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extern
bool
fixed_convert
(
FIXED_VALUE_TYPE
*,
enum
machine_mode,
77
const
FIXED_VALUE_TYPE
*,
bool
);
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/* Convert to a fixed-point mode from an integer. */
80
extern
bool
fixed_convert_from_int
(
FIXED_VALUE_TYPE
*,
enum
machine_mode,
81
double_int
,
bool
,
bool
);
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/* Convert to a fixed-point mode from a real. */
84
extern
bool
fixed_convert_from_real
(
FIXED_VALUE_TYPE
*,
enum
machine_mode,
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const
REAL_VALUE_TYPE *,
bool
);
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/* Convert to a real mode from a fixed-point. */
88
extern
void
real_convert_from_fixed
(REAL_VALUE_TYPE *,
enum
machine_mode,
89
const
FIXED_VALUE_TYPE
*);
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/* Compare two fixed-point objects for bitwise identity. */
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extern
bool
fixed_identical
(
const
FIXED_VALUE_TYPE
*,
const
FIXED_VALUE_TYPE
*);
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/* Calculate a hash value. */
95
extern
unsigned
int
fixed_hash
(
const
FIXED_VALUE_TYPE
*);
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#define FIXED_VALUES_IDENTICAL(x, y) fixed_identical (&(x), &(y))
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/* Determine whether a fixed-point value X is negative. */
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#define FIXED_VALUE_NEGATIVE(x) fixed_isneg (&(x))
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/* Render F as a decimal floating point constant. */
103
extern
void
fixed_to_decimal
(
char
*
str
,
const
FIXED_VALUE_TYPE
*,
size_t
);
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/* Binary or unary arithmetic on tree_code. */
106
extern
bool
fixed_arithmetic
(
FIXED_VALUE_TYPE
*,
int
,
const
FIXED_VALUE_TYPE
*,
107
const
FIXED_VALUE_TYPE
*,
bool
);
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/* Compare fixed-point values by tree_code. */
110
extern
bool
fixed_compare
(
int
,
const
FIXED_VALUE_TYPE
*,
111
const
FIXED_VALUE_TYPE
*);
112
113
/* Determine whether a fixed-point value X is negative. */
114
extern
bool
fixed_isneg
(
const
FIXED_VALUE_TYPE
*);
115
116
#endif
/* GCC_FIXED_VALUE_H */
gcc
fixed-value.h
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