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i386.md (fix_truncsfhi2, [...]): New patterns.

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* i386.md (fix_truncsfhi2, fix_truncdfhi2,
	fix_truncxfhi2): New patterns.
	* i386.c (output_fix_trunc): Handle converting to HImode.

From-SVN: r33044
This commit is contained in:
John Wehle 2000-04-09 19:26:31 +00:00 committed by John Wehle
parent e33c685bd6
commit 46d21d2c82
3 changed files with 66 additions and 2 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
Sun Apr 9 15:16:14 EDT 2000 John Wehle (john@feith.com)
* i386.md (fix_truncsfhi2, fix_truncdfhi2,
fix_truncxfhi2): New patterns.
* i386.c (output_fix_trunc): Handle converting to HImode.
2000-04-08 Alex Samuel <samuel@codesourcery.com>
* ssa.c (convert_to_ssa): Eliminate dead code when calling

6
gcc/config/i386/i386.c
View File

@ -3643,7 +3643,7 @@ output_387_binary_op (insn, operands)
}
/* Output code for INSN to convert a float to a signed int. OPERANDS
are the insn operands. The output may be [SD]Imode and the input
are the insn operands. The output may be [HSD]Imode and the input
operand may be [SDX]Fmode. */
const char *
@ -3694,8 +3694,10 @@ output_fix_trunc (insn, operands)
output_asm_insn ("mov{l}\t{%2, %0|%0, %2}", xops);
output_asm_insn ("mov{l}\t{%3, %1|%1, %3}", xops);
}
else
else if (GET_MODE (operands[0]) == SImode)
output_asm_insn ("mov{l}\t{%3, %0|%0, %3}", operands);
else
output_asm_insn ("mov{w}\t{%3, %0|%0, %3}", operands);
}
return "";

56
gcc/config/i386/i386.md
View File

@ -3113,6 +3113,62 @@
(set (match_dup 0) (match_dup 3))]
"")
;; Signed conversion to HImode.
(define_expand "fix_truncxfhi2"
[(parallel [(set (match_operand:HI 0 "nonimmediate_operand" "")
(fix:HI (match_operand:XF 1 "register_operand" "")))
(clobber (match_dup 2))
(clobber (match_dup 3))
(clobber (match_scratch:SI 4 ""))])]
"TARGET_80387"
"operands[2] = assign_386_stack_local (SImode, 0);
operands[3] = assign_386_stack_local (HImode, 1);")
(define_expand "fix_truncdfhi2"
[(parallel [(set (match_operand:HI 0 "nonimmediate_operand" "")
(fix:HI (match_operand:DF 1 "register_operand" "")))
(clobber (match_dup 2))
(clobber (match_dup 3))
(clobber (match_scratch:SI 4 ""))])]
"TARGET_80387"
"operands[2] = assign_386_stack_local (SImode, 0);
operands[3] = assign_386_stack_local (HImode, 1);")
(define_expand "fix_truncsfhi2"
[(parallel [(set (match_operand:HI 0 "nonimmediate_operand" "")
(fix:HI (match_operand:SF 1 "register_operand" "")))
(clobber (match_dup 2))
(clobber (match_dup 3))
(clobber (match_scratch:SI 4 ""))])]
"TARGET_80387"
"operands[2] = assign_386_stack_local (SImode, 0);
operands[3] = assign_386_stack_local (HImode, 1);")
(define_insn "*fix_trunchi_1"
[(set (match_operand:HI 0 "nonimmediate_operand" "=m,?r")
(fix:HI (match_operand 1 "register_operand" "f,f")))
(clobber (match_operand:SI 2 "memory_operand" "=o,o"))
(clobber (match_operand:HI 3 "memory_operand" "=m,m"))
(clobber (match_scratch:SI 4 "=&r,r"))]
"TARGET_80387 && FLOAT_MODE_P (GET_MODE (operands[1]))"
"* return output_fix_trunc (insn, operands);"
[(set_attr "type" "multi")])
(define_split
[(set (match_operand:HI 0 "register_operand" "")
(fix:HI (match_operand 1 "register_operand" "")))
(clobber (match_operand:SI 2 "memory_operand" ""))
(clobber (match_operand:HI 3 "memory_operand" ""))
(clobber (match_scratch:SI 4 ""))]
"reload_completed"
[(parallel [(set (match_dup 3) (fix:HI (match_dup 1)))
(clobber (match_dup 2))
(clobber (match_dup 3))
(clobber (match_dup 4))])
(set (match_dup 0) (match_dup 3))]
"")
;; %% Not used yet.
(define_insn "x86_fnstcw_1"
[(set (match_operand:HI 0 "memory_operand" "=m")