just in split case.

(subst): Move sign extension inside arithmetic when we have a constant
computation inside another computation.

From-SVN: r2194

Rename args and locals also.

From-SVN: r2193

Rename structure fields and typedefs.

From-SVN: r2192

Fix some bugs in "if (...) x = a; else x = b;" code.
Remove uses of reorder_insns.
Add code to make scc insns for "if (...) x = exp;" if EXP is simple enough.
Optimize "if (...) x = b;" if jumps very expensive; don't use a REG as the
older value of X since it doesn't help and can hurt.
Correctly place generated insns in above case.

From-SVN: r2191

From-SVN: r2190

(subst, simplify_and_const_int, significant_bits): Treat BYTE_LOADS_SIGN_EXTEND just like BYTE_LOADS_ZERO_EXTEND.

(subst, simplify_and_const_int, significant_bits): Treat
BYTE_LOADS_SIGN_EXTEND just like BYTE_LOADS_ZERO_EXTEND.
(num_sign_bit_copies, case MEM): New case for BYTE_LOADS_SIGN_EXTEND.
(num_sign_bit_copies, case SUBREG): Handle just like significant_bits.

From-SVN: r2189

like BYTE_LOADS_ZERO_EXTEND.

From-SVN: r2188

From-SVN: r2187

From-SVN: r2186

From-SVN: r2185

deleted them.

From-SVN: r2184

From-SVN: r2183

Likewise, when making new REG_DEAD notes for distribute_notes.
(remove_death, move_deaths): Update reg_n_deaths.
(distribute_notes): When placing second REG_DEAD or REG_UNUSED note or
ignoring such a note, update reg_n_deaths.

(simplify_comparison, case ASHIFT): Fix typo.

(try_combine): The insns made by a DEFINE_SPLIT might contain a PARALLEL and
the call to recog_for_combine might add it.


(combine_instructions): Clear significant_valid at end of combine pass for
a function.
(find_split_point, case MEM): See if first operand of the PLUS that makes
up an address is complex.
(subst): Add missing arg to recursive calls when IF_THEN_ELSE is an arg
of an operator.
(subst, case IF_THEN_ELSE): Generalize code to propagate comparison result
into arms by using known_cond.
If an arm is the first operand of the comparison, make it the true arm.
Remove unneeded comparison when arms are identical.
Try to convert IF_THEN_ELSE to ABS, (neg (abs X)), [US]MIN, [US]MAX.
Convert (if_then_else (ne A 0) (OP X C) X) to (OP X (mult A C)).
(subst, case SET): If we don't have conditional moves, convert IF_THEN_ELSE
into logical operations.
(subst, case AND): Always make conditional moves, even if we don't support
them on the machine.
(known_cond, extended_count): New functions.
(gen_binary): For commutative operations, put constant last.

From-SVN: r2182

(final_giv_value): Look for biv updates by matching insns; don't try to
reparse the insn.

From-SVN: r2181

(expand_decl): Promote modes of scalar variables when useful on target.

From-SVN: r2180

operands.

From-SVN: r2179

Check for bivs that are set over multiple insns and also allow a SIGN_EXTEND
to be used; remove check for MINUS since we don't make MINUS with a constant
2nd operand any more.

From-SVN: r2178

was promoted).

From-SVN: r2177

Add new fields PROMOTED_MODE and UNSIGNEDP.

From-SVN: r2176

all callers changed.
Insert mode conversions when required.
(fixup_var_refs_1): Add new parms for mode and signedness; handle SUBREGs
for promoted values.
(assign_parms): Promote the mode of parameters when useful for the target
machine.

From-SVN: r2175

(convert_move, convert_to_mode): Strip off a SUBREG made for variables with
promoted modes.
(store_expr): Store into variables with promoted modes by doing the
appropriate extension operation.
(expand_expr, case VAR_DECL): Generate SUBREGs for promoted objects.
(expand_expr, case SAVE_EXPR): Likewise for SAVE_EXPRs.
(expand_increment): Handle increment of promoted objects.

From-SVN: r2174

From-SVN: r2173

From-SVN: r2172

From-SVN: r2171

From-SVN: r2170

From-SVN: r2169

From-SVN: r2168

(BRANCH_COST): Increase from 2 to 3.

From-SVN: r2167

From-SVN: r2166

to floating; offset value by hand to fit in signed type.

From-SVN: r2165

From-SVN: r2164

(sCOND patterns): Don't allow a MEM in the SET_DEST, because these insns
can't have input reloads, and a MEM might need an input address reload.

From-SVN: r2163

From-SVN: r2162

From-SVN: r2161

(fold_rtx): For SUBREG, actually test subreg_lowpart_p in the
code to handle narrowing subregs.  And exclude binary ops like DIV
where truncating the args is not valid.

From-SVN: r2160

(initializer_constant_valid_p): Warn about address arithmetic destined for a type that's too narrow.

(initializer_constant_valid_p): Warn about address
arithmetic destined for a type that's too narrow.
New argument ENDTYPE.

From-SVN: r2159

(__CTOR_LIST__, __DTOR_LIST__): Moved to separate member.

From-SVN: r2158

From-SVN: r2157

From-SVN: r2156

From-SVN: r2155