1 ;; ARM Thumb-
2 Machine Description
2 ;; Copyright (C)
2007,
2008 Free Software Foundation, Inc.
3 ;; Written by CodeSourcery, LLC.
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify it
8 ;; under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version
3, or (at your option)
12 ;; GCC is distributed in the hope that it will be useful, but
13 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 ;; General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3. If not see
19 ;; <http://www.gnu.org/licenses/>. */
21 ;; Note: Thumb-
2 is the variant of the Thumb architecture that adds
22 ;;
32-bit encodings of [almost all of] the Arm instruction set.
23 ;; Some old documents refer to the relatively minor interworking
24 ;; changes made in armv5t as "thumb2". These are considered part
25 ;; the
16-bit Thumb-
1 instruction set.
27 (define_insn "*thumb2_incscc"
28 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
29 (plus:SI (match_operator:SI
2 "arm_comparison_operator"
30 [(match_operand:CC
3 "cc_register" "") (const_int
0)])
31 (match_operand:SI
1 "s_register_operand" "
0,?r")))]
34 it
\\t%d2\;add%d2
\\t%
0, %
1, #
1
35 ite
\\t%D2\;mov%D2
\\t%
0, %
1\;add%d2
\\t%
0, %
1, #
1"
36 [(set_attr "conds" "use")
37 (set_attr "length" "
6,
10")]
40 (define_insn "*thumb2_decscc"
41 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
42 (minus:SI (match_operand:SI
1 "s_register_operand" "
0,?r")
43 (match_operator:SI
2 "arm_comparison_operator"
44 [(match_operand
3 "cc_register" "") (const_int
0)])))]
47 it
\\t%d2\;sub%d2
\\t%
0, %
1, #
1
48 ite
\\t%D2\;mov%D2
\\t%
0, %
1\;sub%d2
\\t%
0, %
1, #
1"
49 [(set_attr "conds" "use")
50 (set_attr "length" "
6,
10")]
53 ;; Thumb-
2 only allows shift by constant on data processing instructions
54 (define_insn "*thumb_andsi_not_shiftsi_si"
55 [(set (match_operand:SI
0 "s_register_operand" "=r")
56 (and:SI (not:SI (match_operator:SI
4 "shift_operator"
57 [(match_operand:SI
2 "s_register_operand" "r")
58 (match_operand:SI
3 "const_int_operand" "M")]))
59 (match_operand:SI
1 "s_register_operand" "r")))]
61 "bic%?
\\t%
0, %
1, %
2%S4"
62 [(set_attr "predicable" "yes")
63 (set_attr "shift" "
2")
64 (set_attr "type" "alu_shift")]
67 (define_insn "*thumb2_smaxsi3"
68 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
69 (smax:SI (match_operand:SI
1 "s_register_operand" "
0,r,?r")
70 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))
71 (clobber (reg:CC CC_REGNUM))]
74 cmp
\\t%
1, %
2\;it
\\tlt\;movlt
\\t%
0, %
2
75 cmp
\\t%
1, %
2\;it
\\tge\;movge
\\t%
0, %
1
76 cmp
\\t%
1, %
2\;ite
\\tge\;movge
\\t%
0, %
1\;movlt
\\t%
0, %
2"
77 [(set_attr "conds" "clob")
78 (set_attr "length" "
10,
10,
14")]
81 (define_insn "*thumb2_sminsi3"
82 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
83 (smin:SI (match_operand:SI
1 "s_register_operand" "
0,r,?r")
84 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))
85 (clobber (reg:CC CC_REGNUM))]
88 cmp
\\t%
1, %
2\;it
\\tge\;movge
\\t%
0, %
2
89 cmp
\\t%
1, %
2\;it
\\tlt\;movlt
\\t%
0, %
1
90 cmp
\\t%
1, %
2\;ite
\\tlt\;movlt
\\t%
0, %
1\;movge
\\t%
0, %
2"
91 [(set_attr "conds" "clob")
92 (set_attr "length" "
10,
10,
14")]
95 (define_insn "*thumb32_umaxsi3"
96 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
97 (umax:SI (match_operand:SI
1 "s_register_operand" "
0,r,?r")
98 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))
99 (clobber (reg:CC CC_REGNUM))]
102 cmp
\\t%
1, %
2\;it
\\tcc\;movcc
\\t%
0, %
2
103 cmp
\\t%
1, %
2\;it
\\tcs\;movcs
\\t%
0, %
1
104 cmp
\\t%
1, %
2\;ite
\\tcs\;movcs
\\t%
0, %
1\;movcc
\\t%
0, %
2"
105 [(set_attr "conds" "clob")
106 (set_attr "length" "
10,
10,
14")]
109 (define_insn "*thumb2_uminsi3"
110 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
111 (umin:SI (match_operand:SI
1 "s_register_operand" "
0,r,?r")
112 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))
113 (clobber (reg:CC CC_REGNUM))]
116 cmp
\\t%
1, %
2\;it
\\tcs\;movcs
\\t%
0, %
2
117 cmp
\\t%
1, %
2\;it
\\tcc\;movcc
\\t%
0, %
1
118 cmp
\\t%
1, %
2\;ite
\\tcc\;movcc
\\t%
0, %
1\;movcs
\\t%
0, %
2"
119 [(set_attr "conds" "clob")
120 (set_attr "length" "
10,
10,
14")]
123 ;; Thumb-
2 does not have rsc, so use a clever trick with shifter operands.
124 (define_insn "*thumb2_negdi2"
125 [(set (match_operand:DI
0 "s_register_operand" "=&r,r")
126 (neg:DI (match_operand:DI
1 "s_register_operand" "?r,
0")))
127 (clobber (reg:CC CC_REGNUM))]
129 "negs
\\t%Q0, %Q1\;sbc
\\t%R0, %R1, %R1, lsl #
1"
130 [(set_attr "conds" "clob")
131 (set_attr "length" "
8")]
134 (define_insn "*thumb2_abssi2"
135 [(set (match_operand:SI
0 "s_register_operand" "=r,&r")
136 (abs:SI (match_operand:SI
1 "s_register_operand" "
0,r")))
137 (clobber (reg:CC CC_REGNUM))]
140 cmp
\\t%
0, #
0\;it
\tlt\;rsblt
\\t%
0, %
0, #
0
141 eor%?
\\t%
0, %
1, %
1, asr #
31\;sub%?
\\t%
0, %
0, %
1, asr #
31"
142 [(set_attr "conds" "clob,*")
143 (set_attr "shift" "
1")
144 ;; predicable can't be set based on the variant, so left as no
145 (set_attr "length" "
10,
8")]
148 (define_insn "*thumb2_neg_abssi2"
149 [(set (match_operand:SI
0 "s_register_operand" "=r,&r")
150 (neg:SI (abs:SI (match_operand:SI
1 "s_register_operand" "
0,r"))))
151 (clobber (reg:CC CC_REGNUM))]
154 cmp
\\t%
0, #
0\;it
\\tgt\;rsbgt
\\t%
0, %
0, #
0
155 eor%?
\\t%
0, %
1, %
1, asr #
31\;rsb%?
\\t%
0, %
0, %
1, asr #
31"
156 [(set_attr "conds" "clob,*")
157 (set_attr "shift" "
1")
158 ;; predicable can't be set based on the variant, so left as no
159 (set_attr "length" "
10,
8")]
162 ;; We have two alternatives here for memory loads (and similarly for stores)
163 ;; to reflect the fact that the permissible constant pool ranges differ
164 ;; between ldr instructions taking low regs and ldr instructions taking high
165 ;; regs. The high register alternatives are not taken into account when
166 ;; choosing register preferences in order to reflect their expense.
167 (define_insn "*thumb2_movsi_insn"
168 [(set (match_operand:SI
0 "nonimmediate_operand" "=rk,r,r,r,l ,*hk,m,*m")
169 (match_operand:SI
1 "general_operand" "rk ,I,K,j,mi,*mi,l,*hk"))]
170 "TARGET_THUMB2 && ! TARGET_IWMMXT
171 && !(TARGET_HARD_FLOAT && TARGET_VFP)
172 && ( register_operand (operands[
0], SImode)
173 || register_operand (operands[
1], SImode))"
183 [(set_attr "type" "*,*,*,*,load1,load1,store1,store1")
184 (set_attr "predicable" "yes")
185 (set_attr "pool_range" "*,*,*,*,
1020,
4096,*,*")
186 (set_attr "neg_pool_range" "*,*,*,*,
0,
0,*,*")]
189 (define_insn "tls_load_dot_plus_four"
190 [(set (match_operand:SI
0 "register_operand" "=l,l,r,r")
191 (mem:SI (unspec:SI [(match_operand:SI
2 "register_operand" "
0,
1,
0,
1")
193 (match_operand
3 "" "")]
195 (clobber (match_scratch:SI
1 "=X,l,X,r"))]
198 (*targetm.asm_out.internal_label) (asm_out_file,
\"LPIC
\",
199 INTVAL (operands[
3]));
200 return
\"add
\\t%
2, %|pc\;ldr%?
\\t%
0, [%
2]
\";
202 [(set_attr "length" "
4,
4,
6,
6")]
205 ;; Thumb-
2 always has load/store halfword instructions, so we can avoid a lot
206 ;; of the messiness associated with the ARM patterns.
207 (define_insn "*thumb2_movhi_insn"
208 [(set (match_operand:HI
0 "nonimmediate_operand" "=r,r,m,r")
209 (match_operand:HI
1 "general_operand" "rI,n,r,m"))]
212 mov%?
\\t%
0, %
1\\t%@ movhi
213 movw%?
\\t%
0, %L1
\\t%@ movhi
214 str%(h%)
\\t%
1, %
0\\t%@ movhi
215 ldr%(h%)
\\t%
0, %
1\\t%@ movhi"
216 [(set_attr "type" "*,*,store1,load1")
217 (set_attr "predicable" "yes")
218 (set_attr "pool_range" "*,*,*,
4096")
219 (set_attr "neg_pool_range" "*,*,*,
250")]
222 (define_insn "*thumb2_cmpsi_neg_shiftsi"
223 [(set (reg:CC CC_REGNUM)
224 (compare:CC (match_operand:SI
0 "s_register_operand" "r")
225 (neg:SI (match_operator:SI
3 "shift_operator"
226 [(match_operand:SI
1 "s_register_operand" "r")
227 (match_operand:SI
2 "const_int_operand" "M")]))))]
230 [(set_attr "conds" "set")
231 (set_attr "shift" "
1")
232 (set_attr "type" "alu_shift")]
235 (define_insn "*thumb2_mov_scc"
236 [(set (match_operand:SI
0 "s_register_operand" "=r")
237 (match_operator:SI
1 "arm_comparison_operator"
238 [(match_operand
2 "cc_register" "") (const_int
0)]))]
240 "ite
\\t%D1\;mov%D1
\\t%
0, #
0\;mov%d1
\\t%
0, #
1"
241 [(set_attr "conds" "use")
242 (set_attr "length" "
10")]
245 (define_insn "*thumb2_mov_negscc"
246 [(set (match_operand:SI
0 "s_register_operand" "=r")
247 (neg:SI (match_operator:SI
1 "arm_comparison_operator"
248 [(match_operand
2 "cc_register" "") (const_int
0)])))]
250 "ite
\\t%D1\;mov%D1
\\t%
0, #
0\;mvn%d1
\\t%
0, #
0"
251 [(set_attr "conds" "use")
252 (set_attr "length" "
10")]
255 (define_insn "*thumb2_mov_notscc"
256 [(set (match_operand:SI
0 "s_register_operand" "=r")
257 (not:SI (match_operator:SI
1 "arm_comparison_operator"
258 [(match_operand
2 "cc_register" "") (const_int
0)])))]
260 "ite
\\t%D1\;mov%D1
\\t%
0, #
0\;mvn%d1
\\t%
0, #
1"
261 [(set_attr "conds" "use")
262 (set_attr "length" "
10")]
265 (define_insn "*thumb2_movsicc_insn"
266 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r,r,r,r,r,r")
268 (match_operator
3 "arm_comparison_operator"
269 [(match_operand
4 "cc_register" "") (const_int
0)])
270 (match_operand:SI
1 "arm_not_operand" "
0,
0,rI,K,rI,rI,K,K")
271 (match_operand:SI
2 "arm_not_operand" "rI,K,
0,
0,rI,K,rI,K")))]
274 it
\\t%D3\;mov%D3
\\t%
0, %
2
275 it
\\t%D3\;mvn%D3
\\t%
0, #%B2
276 it
\\t%d3\;mov%d3
\\t%
0, %
1
277 it
\\t%d3\;mvn%d3
\\t%
0, #%B1
278 ite
\\t%d3\;mov%d3
\\t%
0, %
1\;mov%D3
\\t%
0, %
2
279 ite
\\t%d3\;mov%d3
\\t%
0, %
1\;mvn%D3
\\t%
0, #%B2
280 ite
\\t%d3\;mvn%d3
\\t%
0, #%B1\;mov%D3
\\t%
0, %
2
281 ite
\\t%d3\;mvn%d3
\\t%
0, #%B1\;mvn%D3
\\t%
0, #%B2"
282 [(set_attr "length" "
6,
6,
6,
6,
10,
10,
10,
10")
283 (set_attr "conds" "use")]
286 (define_insn "*thumb2_movsfcc_soft_insn"
287 [(set (match_operand:SF
0 "s_register_operand" "=r,r")
288 (if_then_else:SF (match_operator
3 "arm_comparison_operator"
289 [(match_operand
4 "cc_register" "") (const_int
0)])
290 (match_operand:SF
1 "s_register_operand" "
0,r")
291 (match_operand:SF
2 "s_register_operand" "r,
0")))]
292 "TARGET_THUMB2 && TARGET_SOFT_FLOAT"
294 it
\\t%D3\;mov%D3
\\t%
0, %
2
295 it
\\t%d3\;mov%d3
\\t%
0, %
1"
296 [(set_attr "length" "
6,
6")
297 (set_attr "conds" "use")]
300 (define_insn "*call_reg_thumb2"
301 [(call (mem:SI (match_operand:SI
0 "s_register_operand" "r"))
302 (match_operand
1 "" ""))
303 (use (match_operand
2 "" ""))
304 (clobber (reg:SI LR_REGNUM))]
307 [(set_attr "type" "call")]
310 (define_insn "*call_value_reg_thumb2"
311 [(set (match_operand
0 "" "")
312 (call (mem:SI (match_operand:SI
1 "register_operand" "l*r"))
313 (match_operand
2 "" "")))
314 (use (match_operand
3 "" ""))
315 (clobber (reg:SI LR_REGNUM))]
318 [(set_attr "type" "call")]
321 (define_insn "*thumb2_indirect_jump"
323 (match_operand:SI
0 "register_operand" "l*r"))]
326 [(set_attr "conds" "clob")]
328 ;; Don't define thumb2_load_indirect_jump because we can't guarantee label
329 ;; addresses will have the thumb bit set correctly.
332 (define_insn "*thumb2_and_scc"
333 [(set (match_operand:SI
0 "s_register_operand" "=r")
334 (and:SI (match_operator:SI
1 "arm_comparison_operator"
335 [(match_operand
3 "cc_register" "") (const_int
0)])
336 (match_operand:SI
2 "s_register_operand" "r")))]
338 "ite
\\t%D1\;mov%D1
\\t%
0, #
0\;and%d1
\\t%
0, %
2, #
1"
339 [(set_attr "conds" "use")
340 (set_attr "length" "
10")]
343 (define_insn "*thumb2_ior_scc"
344 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
345 (ior:SI (match_operator:SI
2 "arm_comparison_operator"
346 [(match_operand
3 "cc_register" "") (const_int
0)])
347 (match_operand:SI
1 "s_register_operand" "
0,?r")))]
350 it
\\t%d2\;orr%d2
\\t%
0, %
1, #
1
351 ite
\\t%D2\;mov%D2
\\t%
0, %
1\;orr%d2
\\t%
0, %
1, #
1"
352 [(set_attr "conds" "use")
353 (set_attr "length" "
6,
10")]
356 (define_insn "*thumb2_cond_move"
357 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
358 (if_then_else:SI (match_operator
3 "equality_operator"
359 [(match_operator
4 "arm_comparison_operator"
360 [(match_operand
5 "cc_register" "") (const_int
0)])
362 (match_operand:SI
1 "arm_rhs_operand" "
0,rI,?rI")
363 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))]
366 if (GET_CODE (operands[
3]) == NE)
368 if (which_alternative !=
1)
369 output_asm_insn (
\"it
\\t%D4\;mov%D4
\\t%
0, %
2\", operands);
370 if (which_alternative !=
0)
371 output_asm_insn (
\"it
\\t%d4\;mov%d4
\\t%
0, %
1\", operands);
374 switch (which_alternative)
377 output_asm_insn (
\"it
\\t%d4
\", operands);
380 output_asm_insn (
\"it
\\t%D4
\", operands);
383 output_asm_insn (
\"ite
\\t%D4
\", operands);
388 if (which_alternative !=
0)
389 output_asm_insn (
\"mov%D4
\\t%
0, %
1\", operands);
390 if (which_alternative !=
1)
391 output_asm_insn (
\"mov%d4
\\t%
0, %
2\", operands);
394 [(set_attr "conds" "use")
395 (set_attr "length" "
6,
6,
10")]
398 (define_insn "*thumb2_cond_arith"
399 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
400 (match_operator:SI
5 "shiftable_operator"
401 [(match_operator:SI
4 "arm_comparison_operator"
402 [(match_operand:SI
2 "s_register_operand" "r,r")
403 (match_operand:SI
3 "arm_rhs_operand" "rI,rI")])
404 (match_operand:SI
1 "s_register_operand" "
0,?r")]))
405 (clobber (reg:CC CC_REGNUM))]
408 if (GET_CODE (operands[
4]) == LT && operands[
3] == const0_rtx)
409 return
\"%i5
\\t%
0, %
1, %
2, lsr #
31\";
411 output_asm_insn (
\"cmp
\\t%
2, %
3\", operands);
412 if (GET_CODE (operands[
5]) == AND)
414 output_asm_insn (
\"ite
\\t%D4
\", operands);
415 output_asm_insn (
\"mov%D4
\\t%
0, #
0\", operands);
417 else if (GET_CODE (operands[
5]) == MINUS)
419 output_asm_insn (
\"ite
\\t%D4
\", operands);
420 output_asm_insn (
\"rsb%D4
\\t%
0, %
1, #
0\", operands);
422 else if (which_alternative !=
0)
424 output_asm_insn (
\"ite
\\t%D4
\", operands);
425 output_asm_insn (
\"mov%D4
\\t%
0, %
1\", operands);
428 output_asm_insn (
\"it
\\t%d4
\", operands);
429 return
\"%i5%d4
\\t%
0, %
1, #
1\";
431 [(set_attr "conds" "clob")
432 (set_attr "length" "
14")]
435 (define_insn "*thumb2_cond_sub"
436 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
437 (minus:SI (match_operand:SI
1 "s_register_operand" "
0,?r")
438 (match_operator:SI
4 "arm_comparison_operator"
439 [(match_operand:SI
2 "s_register_operand" "r,r")
440 (match_operand:SI
3 "arm_rhs_operand" "rI,rI")])))
441 (clobber (reg:CC CC_REGNUM))]
444 output_asm_insn (
\"cmp
\\t%
2, %
3\", operands);
445 if (which_alternative !=
0)
447 output_asm_insn (
\"ite
\\t%D4
\", operands);
448 output_asm_insn (
\"mov%D4
\\t%
0, %
1\", operands);
451 output_asm_insn (
\"it
\\t%d4
\", operands);
452 return
\"sub%d4
\\t%
0, %
1, #
1\";
454 [(set_attr "conds" "clob")
455 (set_attr "length" "
10,
14")]
458 (define_insn "*thumb2_negscc"
459 [(set (match_operand:SI
0 "s_register_operand" "=r")
460 (neg:SI (match_operator
3 "arm_comparison_operator"
461 [(match_operand:SI
1 "s_register_operand" "r")
462 (match_operand:SI
2 "arm_rhs_operand" "rI")])))
463 (clobber (reg:CC CC_REGNUM))]
466 if (GET_CODE (operands[
3]) == LT && operands[
2] == const0_rtx)
467 return
\"asr
\\t%
0, %
1, #
31\";
469 if (GET_CODE (operands[
3]) == NE)
470 return
\"subs
\\t%
0, %
1, %
2\;it
\\tne\;mvnne
\\t%
0, #
0\";
472 output_asm_insn (
\"cmp
\\t%
1, %
2\", operands);
473 output_asm_insn (
\"ite
\\t%D3
\", operands);
474 output_asm_insn (
\"mov%D3
\\t%
0, #
0\", operands);
475 return
\"mvn%d3
\\t%
0, #
0\";
477 [(set_attr "conds" "clob")
478 (set_attr "length" "
14")]
481 (define_insn "*thumb2_movcond"
482 [(set (match_operand:SI
0 "s_register_operand" "=r,r,r")
484 (match_operator
5 "arm_comparison_operator"
485 [(match_operand:SI
3 "s_register_operand" "r,r,r")
486 (match_operand:SI
4 "arm_add_operand" "rIL,rIL,rIL")])
487 (match_operand:SI
1 "arm_rhs_operand" "
0,rI,?rI")
488 (match_operand:SI
2 "arm_rhs_operand" "rI,
0,rI")))
489 (clobber (reg:CC CC_REGNUM))]
492 if (GET_CODE (operands[
5]) == LT
493 && (operands[
4] == const0_rtx))
495 if (which_alternative !=
1 && GET_CODE (operands[
1]) == REG)
497 if (operands[
2] == const0_rtx)
498 return
\"and
\\t%
0, %
1, %
3, asr #
31\";
499 return
\"ands
\\t%
0, %
1, %
3, asr #
32\;it
\\tcc\;movcc
\\t%
0, %
2\";
501 else if (which_alternative !=
0 && GET_CODE (operands[
2]) == REG)
503 if (operands[
1] == const0_rtx)
504 return
\"bic
\\t%
0, %
2, %
3, asr #
31\";
505 return
\"bics
\\t%
0, %
2, %
3, asr #
32\;it
\\tcs\;movcs
\\t%
0, %
1\";
507 /* The only case that falls through to here is when both ops
1 &
2
511 if (GET_CODE (operands[
5]) == GE
512 && (operands[
4] == const0_rtx))
514 if (which_alternative !=
1 && GET_CODE (operands[
1]) == REG)
516 if (operands[
2] == const0_rtx)
517 return
\"bic
\\t%
0, %
1, %
3, asr #
31\";
518 return
\"bics
\\t%
0, %
1, %
3, asr #
32\;it
\\tcs\;movcs
\\t%
0, %
2\";
520 else if (which_alternative !=
0 && GET_CODE (operands[
2]) == REG)
522 if (operands[
1] == const0_rtx)
523 return
\"and
\\t%
0, %
2, %
3, asr #
31\";
524 return
\"ands
\\t%
0, %
2, %
3, asr #
32\;it
\tcc\;movcc
\\t%
0, %
1\";
526 /* The only case that falls through to here is when both ops
1 &
2
529 if (GET_CODE (operands[
4]) == CONST_INT
530 && !const_ok_for_arm (INTVAL (operands[
4])))
531 output_asm_insn (
\"cmn
\\t%
3, #%n4
\", operands);
533 output_asm_insn (
\"cmp
\\t%
3, %
4\", operands);
534 switch (which_alternative)
537 output_asm_insn (
\"it
\\t%D5
\", operands);
540 output_asm_insn (
\"it
\\t%d5
\", operands);
543 output_asm_insn (
\"ite
\\t%d5
\", operands);
548 if (which_alternative !=
0)
549 output_asm_insn (
\"mov%d5
\\t%
0, %
1\", operands);
550 if (which_alternative !=
1)
551 output_asm_insn (
\"mov%D5
\\t%
0, %
2\", operands);
554 [(set_attr "conds" "clob")
555 (set_attr "length" "
10,
10,
14")]
558 ;; Zero and sign extension instructions.
560 ;; All supported Thumb2 implementations are armv6, so only that case is
562 (define_insn "*thumb2_extendqisi_v6"
563 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
564 (sign_extend:SI (match_operand:QI
1 "nonimmediate_operand" "r,m")))]
565 "TARGET_THUMB2 && arm_arch6"
569 [(set_attr "type" "alu_shift,load_byte")
570 (set_attr "predicable" "yes")
571 (set_attr "pool_range" "*,
4096")
572 (set_attr "neg_pool_range" "*,
250")]
575 (define_insn "*thumb2_zero_extendhisi2_v6"
576 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
577 (zero_extend:SI (match_operand:HI
1 "nonimmediate_operand" "r,m")))]
578 "TARGET_THUMB2 && arm_arch6"
582 [(set_attr "type" "alu_shift,load_byte")
583 (set_attr "predicable" "yes")
584 (set_attr "pool_range" "*,
4096")
585 (set_attr "neg_pool_range" "*,
250")]
588 (define_insn "thumb2_zero_extendqisi2_v6"
589 [(set (match_operand:SI
0 "s_register_operand" "=r,r")
590 (zero_extend:SI (match_operand:QI
1 "nonimmediate_operand" "r,m")))]
591 "TARGET_THUMB2 && arm_arch6"
594 ldr%(b%)
\\t%
0, %
1\\t%@ zero_extendqisi2"
595 [(set_attr "type" "alu_shift,load_byte")
596 (set_attr "predicable" "yes")
597 (set_attr "pool_range" "*,
4096")
598 (set_attr "neg_pool_range" "*,
250")]
601 (define_insn "thumb2_casesi_internal"
602 [(parallel [(set (pc)
604 (leu (match_operand:SI
0 "s_register_operand" "r")
605 (match_operand:SI
1 "arm_rhs_operand" "rI"))
606 (mem:SI (plus:SI (mult:SI (match_dup
0) (const_int
4))
607 (label_ref (match_operand
2 "" ""))))
608 (label_ref (match_operand
3 "" ""))))
609 (clobber (reg:CC CC_REGNUM))
610 (clobber (match_scratch:SI
4 "=&r"))
611 (use (label_ref (match_dup
2)))])]
612 "TARGET_THUMB2 && !flag_pic"
613 "* return thumb2_output_casesi(operands);"
614 [(set_attr "conds" "clob")
615 (set_attr "length" "
16")]
618 (define_insn "thumb2_casesi_internal_pic"
619 [(parallel [(set (pc)
621 (leu (match_operand:SI
0 "s_register_operand" "r")
622 (match_operand:SI
1 "arm_rhs_operand" "rI"))
623 (mem:SI (plus:SI (mult:SI (match_dup
0) (const_int
4))
624 (label_ref (match_operand
2 "" ""))))
625 (label_ref (match_operand
3 "" ""))))
626 (clobber (reg:CC CC_REGNUM))
627 (clobber (match_scratch:SI
4 "=&r"))
628 (clobber (match_scratch:SI
5 "=r"))
629 (use (label_ref (match_dup
2)))])]
630 "TARGET_THUMB2 && flag_pic"
631 "* return thumb2_output_casesi(operands);"
632 [(set_attr "conds" "clob")
633 (set_attr "length" "
20")]
636 ;; Note: this is not predicable, to avoid issues with linker-generated
637 ;; interworking stubs.
638 (define_insn "*thumb2_return"
640 "TARGET_THUMB2 && USE_RETURN_INSN (FALSE)"
643 return output_return_instruction (const_true_rtx, TRUE, FALSE);
645 [(set_attr "type" "load1")
646 (set_attr "length" "
12")]
649 (define_insn_and_split "thumb2_eh_return"
650 [(unspec_volatile [(match_operand:SI
0 "s_register_operand" "r")]
652 (clobber (match_scratch:SI
1 "=&r"))]
655 "&& reload_completed"
659 thumb_set_return_address (operands[
0], operands[
1]);
664 (define_insn "*thumb2_alusi3_short"
665 [(set (match_operand:SI
0 "s_register_operand" "=l")
666 (match_operator:SI
3 "thumb_16bit_operator"
667 [(match_operand:SI
1 "s_register_operand" "
0")
668 (match_operand:SI
2 "s_register_operand" "l")]))
669 (clobber (reg:CC CC_REGNUM))]
670 "TARGET_THUMB2 && reload_completed
671 && GET_CODE(operands[
3]) != PLUS
672 && GET_CODE(operands[
3]) != MINUS"
674 [(set_attr "predicable" "yes")
675 (set_attr "length" "
2")]
678 ;; Similarly for
16-bit shift instructions
679 ;; There is no
16-bit rotate by immediate instruction.
681 [(set (match_operand:SI
0 "low_register_operand" "")
682 (match_operator:SI
3 "shift_operator"
683 [(match_operand:SI
1 "low_register_operand" "")
684 (match_operand:SI
2 "low_reg_or_int_operand" "")]))]
686 && peep2_regno_dead_p(
0, CC_REGNUM)
687 && ((GET_CODE(operands[
3]) != ROTATE && GET_CODE(operands[
3]) != ROTATERT)
688 || REG_P(operands[
2]))"
694 (clobber (reg:CC CC_REGNUM))])]
698 (define_insn "*thumb2_shiftsi3_short"
699 [(set (match_operand:SI
0 "low_register_operand" "=l")
700 (match_operator:SI
3 "shift_operator"
701 [(match_operand:SI
1 "low_register_operand" "l")
702 (match_operand:SI
2 "low_reg_or_int_operand" "lM")]))
703 (clobber (reg:CC CC_REGNUM))]
704 "TARGET_THUMB2 && reload_completed
705 && ((GET_CODE(operands[
3]) != ROTATE && GET_CODE(operands[
3]) != ROTATERT)
706 || REG_P(operands[
2]))"
707 "* return arm_output_shift(operands,
2);"
708 [(set_attr "predicable" "yes")
709 (set_attr "shift" "
1")
710 (set_attr "length" "
2")
711 (set (attr "type") (if_then_else (match_operand
2 "const_int_operand" "")
712 (const_string "alu_shift")
713 (const_string "alu_shift_reg")))]
716 ;;
16-bit load immediate
718 [(set (match_operand:QHSI
0 "low_register_operand" "")
719 (match_operand:QHSI
1 "const_int_operand" ""))]
721 && peep2_regno_dead_p(
0, CC_REGNUM)
722 && (unsigned HOST_WIDE_INT) INTVAL(operands[
1]) <
256"
726 (clobber (reg:CC CC_REGNUM))])]
730 (define_insn "*thumb2_mov<mode>_shortim"
731 [(set (match_operand:QHSI
0 "low_register_operand" "=l")
732 (match_operand:QHSI
1 "const_int_operand" "I"))
733 (clobber (reg:CC CC_REGNUM))]
734 "TARGET_THUMB2 && reload_completed"
736 [(set_attr "predicable" "yes")
737 (set_attr "length" "
2")]
740 ;;
16-bit add/sub immediate
742 [(set (match_operand:SI
0 "low_register_operand" "")
743 (plus:SI (match_operand:SI
1 "low_register_operand" "")
744 (match_operand:SI
2 "const_int_operand" "")))]
746 && peep2_regno_dead_p(
0, CC_REGNUM)
747 && ((rtx_equal_p(operands[
0], operands[
1])
748 && INTVAL(operands[
2]) > -
256 && INTVAL(operands[
2]) <
256)
749 || (INTVAL(operands[
2]) > -
8 && INTVAL(operands[
2]) <
8))"
752 (plus:SI (match_dup
1)
754 (clobber (reg:CC CC_REGNUM))])]
758 (define_insn "*thumb2_addsi_short"
759 [(set (match_operand:SI
0 "low_register_operand" "=l,l")
760 (plus:SI (match_operand:SI
1 "low_register_operand" "l,
0")
761 (match_operand:SI
2 "low_reg_or_int_operand" "lPt,Ps")))
762 (clobber (reg:CC CC_REGNUM))]
763 "TARGET_THUMB2 && reload_completed"
767 if (GET_CODE (operands[
2]) == CONST_INT)
768 val = INTVAL(operands[
2]);
772 /* We prefer eg. subs rn, rn, #
1 over adds rn, rn, #
0xffffffff. */
773 if (val <
0 && const_ok_for_arm(ARM_SIGN_EXTEND (-val)))
774 return
\"sub%!
\\t%
0, %
1, #%n2
\";
776 return
\"add%!
\\t%
0, %
1, %
2\";
778 [(set_attr "predicable" "yes")
779 (set_attr "length" "
2")]
782 (define_insn "divsi3"
783 [(set (match_operand:SI
0 "s_register_operand" "=r")
784 (div:SI (match_operand:SI
1 "s_register_operand" "r")
785 (match_operand:SI
2 "s_register_operand" "r")))]
786 "TARGET_THUMB2 && arm_arch_hwdiv"
788 [(set_attr "predicable" "yes")
789 (set_attr "insn" "sdiv")]
792 (define_insn "udivsi3"
793 [(set (match_operand:SI
0 "s_register_operand" "=r")
794 (udiv:SI (match_operand:SI
1 "s_register_operand" "r")
795 (match_operand:SI
2 "s_register_operand" "r")))]
796 "TARGET_THUMB2 && arm_arch_hwdiv"
798 [(set_attr "predicable" "yes")
799 (set_attr "insn" "udiv")]
802 (define_insn "*thumb2_subsi_short"
803 [(set (match_operand:SI
0 "low_register_operand" "=l")
804 (minus:SI (match_operand:SI
1 "low_register_operand" "l")
805 (match_operand:SI
2 "low_register_operand" "l")))
806 (clobber (reg:CC CC_REGNUM))]
807 "TARGET_THUMB2 && reload_completed"
809 [(set_attr "predicable" "yes")
810 (set_attr "length" "
2")]
814 [(set (match_operand:CC
0 "cc_register" "")
815 (compare:CC (match_operand:SI
1 "low_register_operand" "")
816 (match_operand:SI
2 "const_int_operand" "")))]
818 && peep2_reg_dead_p (
1, operands[
1])
819 && satisfies_constraint_Pw (operands[
2])"
821 [(set (match_dup
0) (compare:CC (match_dup
1) (match_dup
2)))
822 (set (match_dup
1) (plus:SI (match_dup
1) (match_dup
3)))])]
823 "operands[
3] = GEN_INT (- INTVAL (operands[
2]));"
827 [(match_scratch:SI
3 "l")
828 (set (match_operand:CC
0 "cc_register" "")
829 (compare:CC (match_operand:SI
1 "low_register_operand" "")
830 (match_operand:SI
2 "const_int_operand" "")))]
832 && satisfies_constraint_Px (operands[
2])"
834 [(set (match_dup
0) (compare:CC (match_dup
1) (match_dup
2)))
835 (set (match_dup
3) (plus:SI (match_dup
1) (match_dup
4)))])]
836 "operands[
4] = GEN_INT (- INTVAL (operands[
2]));"
839 (define_insn "*thumb2_addsi3_compare0"
840 [(set (reg:CC_NOOV CC_REGNUM)
842 (plus:SI (match_operand:SI
1 "s_register_operand" "l,
0, r")
843 (match_operand:SI
2 "arm_add_operand" "lPt,Ps,rIL"))
845 (set (match_operand:SI
0 "s_register_operand" "=l,l,r")
846 (plus:SI (match_dup
1) (match_dup
2)))]
851 if (GET_CODE (operands[
2]) == CONST_INT)
852 val = INTVAL (operands[
2]);
856 if (val <
0 && const_ok_for_arm (ARM_SIGN_EXTEND (-val)))
857 return
\"subs
\\t%
0, %
1, #%n2
\";
859 return
\"adds
\\t%
0, %
1, %
2\";
861 [(set_attr "conds" "set")
862 (set_attr "length" "
2,
2,
4")]
865 (define_insn "*thumb2_addsi3_compare0_scratch"
866 [(set (reg:CC_NOOV CC_REGNUM)
868 (plus:SI (match_operand:SI
0 "s_register_operand" "l, r")
869 (match_operand:SI
1 "arm_add_operand" "lPv,rIL"))
875 if (GET_CODE (operands[
1]) == CONST_INT)
876 val = INTVAL (operands[
1]);
880 if (val <
0 && const_ok_for_arm (ARM_SIGN_EXTEND (-val)))
881 return
\"cmp
\\t%
0, #%n1
\";
883 return
\"cmn
\\t%
0, %
1\";
885 [(set_attr "conds" "set")
886 (set_attr "length" "
2,
4")]
889 ;;
16-bit encodings of "muls" and "mul<c>". We only use these when
890 ;; optimizing for size since "muls" is slow on all known
891 ;; implementations and since "mul<c>" will be generated by
892 ;; "*arm_mulsi3_v6" anyhow. The assembler will use a
16-bit encoding
893 ;; for "mul<c>" whenever possible anyhow.
895 [(set (match_operand:SI
0 "low_register_operand" "")
896 (mult:SI (match_operand:SI
1 "low_register_operand" "")
898 "TARGET_THUMB2 && optimize_size && peep2_regno_dead_p (
0, CC_REGNUM)"
901 (mult:SI (match_dup
0) (match_dup
1)))
902 (clobber (reg:CC CC_REGNUM))])]
907 [(set (match_operand:SI
0 "low_register_operand" "")
908 (mult:SI (match_dup
0)
909 (match_operand:SI
1 "low_register_operand" "")))]
910 "TARGET_THUMB2 && optimize_size && peep2_regno_dead_p (
0, CC_REGNUM)"
913 (mult:SI (match_dup
0) (match_dup
1)))
914 (clobber (reg:CC CC_REGNUM))])]
918 (define_insn "*thumb2_mulsi_short"
919 [(set (match_operand:SI
0 "low_register_operand" "=l")
920 (mult:SI (match_operand:SI
1 "low_register_operand" "%
0")
921 (match_operand:SI
2 "low_register_operand" "l")))
922 (clobber (reg:CC CC_REGNUM))]
923 "TARGET_THUMB2 && optimize_size && reload_completed"
925 [(set_attr "predicable" "yes")
926 (set_attr "length" "
2")
927 (set_attr "insn" "muls")])
929 (define_insn "*thumb2_mulsi_short_compare0"
930 [(set (reg:CC_NOOV CC_REGNUM)
932 (mult:SI (match_operand:SI
1 "register_operand" "%
0")
933 (match_operand:SI
2 "register_operand" "l"))
935 (set (match_operand:SI
0 "register_operand" "=l")
936 (mult:SI (match_dup
1) (match_dup
2)))]
937 "TARGET_THUMB2 && optimize_size"
939 [(set_attr "length" "
2")
940 (set_attr "insn" "muls")])
942 (define_insn "*thumb2_mulsi_short_compare0_scratch"
943 [(set (reg:CC_NOOV CC_REGNUM)
945 (mult:SI (match_operand:SI
1 "register_operand" "%
0")
946 (match_operand:SI
2 "register_operand" "l"))
948 (clobber (match_scratch:SI
0 "=l"))]
949 "TARGET_THUMB2 && optimize_size"
951 [(set_attr "length" "
2")
952 (set_attr "insn" "muls")])
954 (define_insn "*thumb2_cbz"
955 [(set (pc) (if_then_else
956 (eq (match_operand:SI
0 "s_register_operand" "l,?r")
958 (label_ref (match_operand
1 "" ""))
960 (clobber (reg:CC CC_REGNUM))]
963 if (get_attr_length (insn) ==
2)
964 return
\"cbz
\\t%
0, %l1
\";
966 return
\"cmp
\\t%
0, #
0\;beq
\\t%l1
\";
968 [(set (attr "length")
970 (and (ge (minus (match_dup
1) (pc)) (const_int
2))
971 (le (minus (match_dup
1) (pc)) (const_int
128))
972 (eq (symbol_ref ("which_alternative")) (const_int
0)))
977 (define_insn "*thumb2_cbnz"
978 [(set (pc) (if_then_else
979 (ne (match_operand:SI
0 "s_register_operand" "l,?r")
981 (label_ref (match_operand
1 "" ""))
983 (clobber (reg:CC CC_REGNUM))]
986 if (get_attr_length (insn) ==
2)
987 return
\"cbnz
\\t%
0, %l1
\";
989 return
\"cmp
\\t%
0, #
0\;bne
\\t%l1
\";
991 [(set (attr "length")
993 (and (ge (minus (match_dup
1) (pc)) (const_int
2))
994 (le (minus (match_dup
1) (pc)) (const_int
128))
995 (eq (symbol_ref ("which_alternative")) (const_int
0)))
1000 ;;
16-bit complement
1002 [(set (match_operand:SI
0 "low_register_operand" "")
1003 (not:SI (match_operand:SI
1 "low_register_operand" "")))]
1005 && peep2_regno_dead_p(
0, CC_REGNUM)"
1008 (not:SI (match_dup
1)))
1009 (clobber (reg:CC CC_REGNUM))])]
1013 (define_insn "*thumb2_one_cmplsi2_short"
1014 [(set (match_operand:SI
0 "low_register_operand" "=l")
1015 (not:SI (match_operand:SI
1 "low_register_operand" "l")))
1016 (clobber (reg:CC CC_REGNUM))]
1017 "TARGET_THUMB2 && reload_completed"
1019 [(set_attr "predicable" "yes")
1020 (set_attr "length" "
2")]
1025 [(set (match_operand:SI
0 "low_register_operand" "")
1026 (neg:SI (match_operand:SI
1 "low_register_operand" "")))]
1028 && peep2_regno_dead_p(
0, CC_REGNUM)"
1031 (neg:SI (match_dup
1)))
1032 (clobber (reg:CC CC_REGNUM))])]
1036 (define_insn "*thumb2_negsi2_short"
1037 [(set (match_operand:SI
0 "low_register_operand" "=l")
1038 (neg:SI (match_operand:SI
1 "low_register_operand" "l")))
1039 (clobber (reg:CC CC_REGNUM))]
1040 "TARGET_THUMB2 && reload_completed"
1042 [(set_attr "predicable" "yes")
1043 (set_attr "length" "
2")]
1046 (define_insn "*orsi_notsi_si"
1047 [(set (match_operand:SI
0 "s_register_operand" "=r")
1048 (ior:SI (not:SI (match_operand:SI
2 "s_register_operand" "r"))
1049 (match_operand:SI
1 "s_register_operand" "r")))]
1051 "orn%?
\\t%
0, %
1, %
2"
1052 [(set_attr "predicable" "yes")]
1055 (define_insn "*orsi_not_shiftsi_si"
1056 [(set (match_operand:SI
0 "s_register_operand" "=r")
1057 (ior:SI (not:SI (match_operator:SI
4 "shift_operator"
1058 [(match_operand:SI
2 "s_register_operand" "r")
1059 (match_operand:SI
3 "const_int_operand" "M")]))
1060 (match_operand:SI
1 "s_register_operand" "r")))]
1062 "orn%?
\\t%
0, %
1, %
2%S4"
1063 [(set_attr "predicable" "yes")
1064 (set_attr "shift" "
2")
1065 (set_attr "type" "alu_shift")]
1069 [(set (match_operand:CC_NOOV
0 "cc_register" "")
1070 (compare:CC_NOOV (zero_extract:SI
1071 (match_operand:SI
1 "low_register_operand" "")
1073 (match_operand:SI
2 "const_int_operand" ""))
1075 (match_scratch:SI
3 "l")
1077 (if_then_else (match_operator:CC_NOOV
4 "equality_operator"
1078 [(match_dup
0) (const_int
0)])
1079 (match_operand
5 "" "")
1080 (match_operand
6 "" "")))]
1082 && (INTVAL (operands[
2]) >=
0 && INTVAL (operands[
2]) <
32)"
1083 [(parallel [(set (match_dup
0)
1084 (compare:CC_NOOV (ashift:SI (match_dup
1) (match_dup
2))
1086 (clobber (match_dup
3))])
1088 (if_then_else (match_op_dup
4 [(match_dup
0) (const_int
0)])
1089 (match_dup
5) (match_dup
6)))]
1091 operands[
2] = GEN_INT (
31 - INTVAL (operands[
2]));
1092 operands[
4] = gen_rtx_fmt_ee (GET_CODE (operands[
4]) == NE ? LT : GE,
1093 VOIDmode, operands[
0], const0_rtx);
1097 [(set (match_operand:CC_NOOV
0 "cc_register" "")
1098 (compare:CC_NOOV (zero_extract:SI
1099 (match_operand:SI
1 "low_register_operand" "")
1100 (match_operand:SI
2 "const_int_operand" "")
1103 (match_scratch:SI
3 "l")
1105 (if_then_else (match_operator:CC_NOOV
4 "equality_operator"
1106 [(match_dup
0) (const_int
0)])
1107 (match_operand
5 "" "")
1108 (match_operand
6 "" "")))]
1110 && (INTVAL (operands[
2]) >
0 && INTVAL (operands[
2]) <
32)"
1111 [(parallel [(set (match_dup
0)
1112 (compare:CC_NOOV (ashift:SI (match_dup
1) (match_dup
2))
1114 (clobber (match_dup
3))])
1116 (if_then_else (match_op_dup
4 [(match_dup
0) (const_int
0)])
1117 (match_dup
5) (match_dup
6)))]
1119 operands[
2] = GEN_INT (
32 - INTVAL (operands[
2]));