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i386.md (extendsfdf2, [...]): Emit constants provided by 80387 instructions in the destination mode. 

2006-01-26  Paolo Bonzini  <bonzini@gnu.org>

	* config/i386/i386.md (extendsfdf2, extendsfxf2, extenddfxf2): Emit
	constants provided by 80387 instructions in the destination mode.

From-SVN: r110264
This commit is contained in:
Paolo Bonzini 2006-01-26 18:45:29 +00:00
parent 9cee811690
commit e046a30ab1
2 changed files with 45 additions and 12 deletions
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23
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2006-01-26 Paolo Bonzini <bonzini@gnu.org>
* config/i386/i386.md (extendsfdf2, extendsfxf2, extenddfxf2): Emit
constants provided by 80387 instructions in the destination mode.
2006-01-26 Richard Guenther <rguenther@suse.de>
Andrew Pinski <pinskia@physics.uc.edu>
@ -19,7 +24,7 @@
(adjust_range_with_scev): Reject ranges from SCEV which are out
of bounds for the type.
2005-01-26 Daniel Berlin <dberlin@dberlin.org>
2006-01-26 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-alias.c (maybe_create_global_var): Change
subvar walking to an assertion that we don't have subvar'd variables.
@ -572,7 +577,7 @@
mips-tdump.c (main), mips-tfile.c (main): Update copyright notice
dates.
2005-01-21 Kenneth Zadeck <zadeck@naturalbridge.com>
2006-01-21 Kenneth Zadeck <zadeck@naturalbridge.com>
* df-scan.c (problem_SCAN): Added NULL reset function.
(df_scan_reset_blocks): Added code to call reset block function
@ -658,11 +663,11 @@
* c-common.c (empty_body_warning): Add (from c_finish_if_stmt).
Now uses IS_EMPTY_STMT() instead of special NOP markers.
2005-01-20 Paul Brook <paul@codesourcery.com>
2006-01-20 Paul Brook <paul@codesourcery.com>
* Makefile.in (lang_checks): Keep going if mkdir fails.
2005-01-19 Kenneth Zadeck <zadeck@naturalbridge.com>
2006-01-19 Kenneth Zadeck <zadeck@naturalbridge.com>
* df-scan.c (df_scan_free_bb_info): Added basic block parameter to
be able to clean out basic block when not necessary.
@ -689,7 +694,7 @@
Fixed to properly delete information if df is unused before
calling df_finish.
2005-01-19 Kenneth Zadeck <zadeck@naturalbridge.com>
2006-01-19 Kenneth Zadeck <zadeck@naturalbridge.com>
PR rtl-optimization/25799
* df-problems.c (df_ru_confluence_n, df_rd_confluence_n):
@ -1878,7 +1883,7 @@
* gcc.h (lang_specific_spec_functions): Remove.
* gccspec.c (lang_specific_spec_functions): Remove.
2005-01-16 Paolo Bonzini <bonzini@gnu.org>
2006-01-16 Paolo Bonzini <bonzini@gnu.org>
* combine.c (record_value_for_reg): Invalidate registers
if INSN is null.
@ -2132,7 +2137,7 @@
* rtlanal.c (find_reg_note): Assert insn is not null.
2005-01-11 Kenneth Zadeck <zadeck@naturalbridge.com>
2006-01-11 Kenneth Zadeck <zadeck@naturalbridge.com>
* df-scan.c (df_hard_reg_init): Move declaration of i outside
ifdef.
@ -2186,7 +2191,7 @@
* tree-cfg.c (init_empty_tree_cfg, build_tree_cfg, create_bb):
Likewise.
2005-01-11 Kenneth Zadeck <zadeck@naturalbridge.com>
2006-01-11 Kenneth Zadeck <zadeck@naturalbridge.com>
* Makefile.in: Removed rotted odf.c entry.
@ -2282,7 +2287,7 @@
optimizations.
* doc/tm.texi (Misc): Document TARGET_MIN_DIVISIONS_FOR_RECIP_MUL.
2005-01-11 Danny Berlin <dberlin@dberlin.org>
2006-01-11 Danny Berlin <dberlin@dberlin.org>
Kenneth Zadeck <zadeck@naturalbridge.com>
* df.h (DF_SCAN, DF_RU, DF_RD, DF_LR, DF_UR, DF_UREC, DF_CHAIN,

34
gcc/config/i386/i386.md
View File

@ -3521,7 +3521,17 @@
/* ??? Needed for compress_float_constant since all fp constants
are LEGITIMATE_CONSTANT_P. */
if (GET_CODE (operands[1]) == CONST_DOUBLE)
operands[1] = validize_mem (force_const_mem (SFmode, operands[1]));
{
if ((!TARGET_SSE2 || TARGET_MIX_SSE_I387)
&& standard_80387_constant_p (operands[1]) > 0)
{
operands[1] = simplify_const_unary_operation
(FLOAT_EXTEND, DFmode, operands[1], SFmode);
emit_move_insn_1 (operands[0], operands[1]);
DONE;
}
operands[1] = validize_mem (force_const_mem (SFmode, operands[1]));
}
if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM)
operands[1] = force_reg (SFmode, operands[1]);
})
@ -3594,7 +3604,16 @@
/* ??? Needed for compress_float_constant since all fp constants
are LEGITIMATE_CONSTANT_P. */
if (GET_CODE (operands[1]) == CONST_DOUBLE)
operands[1] = validize_mem (force_const_mem (SFmode, operands[1]));
{
if (standard_80387_constant_p (operands[1]) > 0)
{
operands[1] = simplify_const_unary_operation
(FLOAT_EXTEND, XFmode, operands[1], SFmode);
emit_move_insn_1 (operands[0], operands[1]);
DONE;
}
operands[1] = validize_mem (force_const_mem (SFmode, operands[1]));
}
if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM)
operands[1] = force_reg (SFmode, operands[1]);
})
@ -3633,7 +3652,16 @@
/* ??? Needed for compress_float_constant since all fp constants
are LEGITIMATE_CONSTANT_P. */
if (GET_CODE (operands[1]) == CONST_DOUBLE)
operands[1] = validize_mem (force_const_mem (DFmode, operands[1]));
{
if (standard_80387_constant_p (operands[1]) > 0)
{
operands[1] = simplify_const_unary_operation
(FLOAT_EXTEND, XFmode, operands[1], DFmode);
emit_move_insn_1 (operands[0], operands[1]);
DONE;
}
operands[1] = validize_mem (force_const_mem (DFmode, operands[1]));
}
if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM)
operands[1] = force_reg (DFmode, operands[1]);
})