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c4x.md (fixuns_truncqfqi2): Rewrite.

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2000-02-05  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

	* config/c4x/c4x.md (fixuns_truncqfqi2): Rewrite.
	* config/c4x/libgcc.S (ufix_truncqfhi2n): Fix.

From-SVN: r31797
This commit is contained in:
Michael Hayes 2000-02-04 23:35:52 +00:00 committed by Michael Hayes
parent 4f88416976
commit a5fa648417
3 changed files with 32 additions and 14 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-02-05 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* config/c4x/c4x.md (fixuns_truncqfqi2): Rewrite.
* config/c4x/libgcc.S (ufix_truncqfhi2n): Fix.
2000-02-04 Bruce Korb <bkorb@gnu.org>
* fixinc/genfixes(machname.h):

37
gcc/config/c4x/c4x.md
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@ -3751,20 +3751,33 @@
"c4x_emit_libcall (fix_truncqfhi2_libfunc, FIX, HImode, QFmode, 2, operands);
DONE;")
; Is this allowed to be implementation dependent? If so, we can
; omit the conditional load. Otherwise we should emit a split.
(define_expand "fixuns_truncqfqi2"
[(parallel [(set (reg:CC 21)
(compare:CC (fix:QI (match_operand:QF 1 "src_operand" "fHm"))
(const_int 0)))
(set (match_dup 2)
(fix:QI (match_dup 1)))])
(set (match_operand:QI 0 "reg_operand" "=r")
(if_then_else:QI (lt (reg:CC 21) (const_int 0))
(const_int 0)
(match_dup 2)))]
[(set (match_dup 2) (match_dup 5))
(set (reg:CC 21)
(compare:CC (match_operand:QF 1 "src_operand" "fHm")
(match_dup 2)))
(set (match_dup 2)
(if_then_else:QF (lt (reg:CC 21) (const_int 0))
(match_dup 4)
(match_dup 2)))
(parallel [(set (match_dup 2)
(plus:QF (match_dup 2) (match_dup 2)))
(clobber (reg:CC_NOOV 21))])
(parallel [(set (match_dup 2)
(minus:QF (match_dup 1) (match_dup 2)))
(clobber (reg:CC_NOOV 21))])
(parallel [(set (match_operand:QI 0 "reg_operand" "=r")
(fix:QI (match_dup 2)))
(clobber (reg:CC 21))])]
""
"operands[2] = gen_reg_rtx (QImode);")
"operands[2] = gen_reg_rtx (QFmode);
operands[3] = gen_reg_rtx (QFmode);
operands[4] = gen_reg_rtx (QFmode);
operands[5] = gen_reg_rtx (QFmode);
emit_move_insn (operands[4],
immed_real_const_1 (REAL_VALUE_ATOF (\"0.0\", QFmode), QFmode));
emit_move_insn (operands[5],
immed_real_const_1 (REAL_VALUE_ATOF (\"2147483648.0\", QFmode), QFmode));")
(define_expand "fixuns_truncqfhi2"
[(parallel [(set (match_operand:HI 0 "reg_operand" "")

4
gcc/config/c4x/libgcc.S
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@ -1076,7 +1076,7 @@ ufix_truncqfhi2n:
ash -24,r3
subi 31,r3
cmpi 32,r3
bge ufix1
bgt ufix1
cmpi -32,r3
ble ufix1
ldi 1,r0
@ -1223,7 +1223,7 @@ ufix_trunchfhi2n:
ash -24,r3
subi 31,r3
cmpi 32,r3
bge ufixh1
bgt ufixh1
cmpi -32,r3
ble ufixh1
ldi 1,r0