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[ARC] Various small miscellaneous fixes.

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gcc/
2016-11-04  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_process_double_reg_moves): Use
	gen_dexcl_2op call.
	* config/arc/arc.md (movsi_insn): Disable unsupported move
	instructions for ARCv2 cores.
	(movdi): Use prepare_move_operands.
	(movsf, movdf): Use move_dest_operand predicate.
	* config/arc/constraints.md (Chs): Enable when barrel shifter is
	present.
	* config/arc/fpu.md (divsf3): Change to divsf3_fpu.
	* config/arc/fpx.md (dexcl_3op_peep2_insn): Dx data register is
	also a destination.
	(dexcl_3op_peep2_insn_nores): Likewise.
	* config/arc/arc.h (SHIFT_COUNT_TRUNCATED): Define to one.
	(LINK_COMMAND_SPEC): Remove.

From-SVN: r241842
This commit is contained in:
Claudiu Zissulescu 2016-11-04 13:13:43 +01:00 committed by Claudiu Zissulescu
parent 964ef24cd5
commit 491483b026
7 changed files with 58 additions and 61 deletions
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17
gcc/ChangeLog
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@ -1,3 +1,20 @@
2016-11-04 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_process_double_reg_moves): Use
gen_dexcl_2op call.
* config/arc/arc.md (movsi_insn): Disable unsupported move
instructions for ARCv2 cores.
(movdi): Use prepare_move_operands.
(movsf, movdf): Use move_dest_operand predicate.
* config/arc/constraints.md (Chs): Enable when barrel shifter is
present.
* config/arc/fpu.md (divsf3): Change to divsf3_fpu.
* config/arc/fpx.md (dexcl_3op_peep2_insn): Dx data register is
also a destination.
(dexcl_3op_peep2_insn_nores): Likewise.
* config/arc/arc.h (SHIFT_COUNT_TRUNCATED): Define to one.
(LINK_COMMAND_SPEC): Remove.
2016-11-04 Richard Biener <rguenther@suse.de>
PR middle-end/78185

5
gcc/config/arc/arc.c
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@ -9020,10 +9020,7 @@ arc_process_double_reg_moves (rtx *operands)
rtx srcLow = simplify_gen_subreg (SImode, src, DFmode,
TARGET_BIG_ENDIAN ? 4 : 0);
emit_insn (gen_rtx_UNSPEC_VOLATILE (Pmode,
gen_rtvec (3, dest, srcHigh, srcLow),
VUNSPEC_ARC_DEXCL_NORES));
emit_insn (gen_dexcl_2op (dest, srcHigh, srcLow));
}
else
gcc_unreachable ();

27
gcc/config/arc/arc.h
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@ -128,24 +128,6 @@ along with GCC; see the file COPYING3. If not see
%{!marclinux*: %{pg|p|profile:-marclinux_prof;: -marclinux}} \
%{!z:-z max-page-size=0x2000 -z common-page-size=0x2000} \
%{shared:-shared}"
/* Like the standard LINK_COMMAND_SPEC, but add %G when building
a shared library with -nostdlib, so that the hidden functions of libgcc
will be incorporated.
N.B., we don't want a plain -lgcc, as this would lead to re-exporting
non-hidden functions, so we have to consider libgcc_s.so.* first, which in
turn should be wrapped with --as-needed. */
#define LINK_COMMAND_SPEC "\
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
%{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
%{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
%:include(libgomp.spec)%(link_gomp)}\
%(mflib)\
%{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
#else
#define LINK_SPEC "%{mbig-endian:-EB} %{EB} %{EL}\
%{pg|p:-marcelf_prof;mA7|mARC700|mcpu=arc700|mcpu=ARC700: -marcelf}"
@ -1570,13 +1552,10 @@ extern int arc_return_address_regs[4];
/* Undo the effects of the movmem pattern presence on STORE_BY_PIECES_P . */
#define MOVE_RATIO(SPEED) ((SPEED) ? 15 : 3)
/* Define this to be nonzero if shift instructions ignore all but the low-order
few bits. Changed from 1 to 0 for rotate pattern testcases
(e.g. 20020226-1.c). This change truncates the upper 27 bits of a word
while rotating a word. Came to notice through a combine phase
optimization viz. a << (32-b) is equivalent to a << (-b).
/* Define this to be nonzero if shift instructions ignore all but the
low-order few bits.
*/
#define SHIFT_COUNT_TRUNCATED 0
#define SHIFT_COUNT_TRUNCATED 1
/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
is done just by pretending it is already truncated. */

35
gcc/config/arc/arc.md
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@ -704,9 +704,9 @@
; the iscompact attribute allows the epilogue expander to know for which
; insns it should lengthen the return insn.
; N.B. operand 1 of alternative 7 expands into pcl,symbol@gotpc .
(define_insn "*movsi_insn" ; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
[(set (match_operand:SI 0 "move_dest_operand" "=Rcq,Rcq#q, w, h, w,w, w, w, w, w,???w, ?w, w,Rcq#q, w,Rcq, S, Us<,RcqRck,!*x, r,!*Rsd,!*Rcd,r,Ucm, Usd,m,???m,VUsc,VUsc")
(match_operand:SI 1 "move_src_operand" " cL, cP,Rcq#q,hCm1,cL,I,Crr,Clo,Chi,Cbi,?Rac,Cpc,Clb, ?Cal,?Cal, T,Rcq,RcqRck, Us>,Usd,Ucm, Usd, Ucd,m, w,!*Rzd,c,?Rac, Cm3, C32"))]
(define_insn "*movsi_insn" ; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
[(set (match_operand:SI 0 "move_dest_operand" "=Rcq,Rcq#q, w, h, w,w, w, w, w, w,???w, ?w, w,Rcq#q, w,Rcq, S, Us<,RcqRck,!*x, r,!*Rsd,!*Rcd,r,Ucm, Usd,m,???m,VUsc,VUsc")
(match_operand:SI 1 "move_src_operand" " cL, cP,Rcq#q,hPCm1,cL,I,Crr,Clo,Chi,Cbi,?Rac,Cpc,Clb, ?Cal,?Cal, T,Rcq,RcqRck, Us>,Usd,Ucm, Usd, Ucd,m, w,!*Rzd,c,?Rac, Cm3, C32"))]
"register_operand (operands[0], SImode)
|| register_operand (operands[1], SImode)
|| (CONSTANT_P (operands[1])
@ -751,7 +751,7 @@
; of Crr to 4.
(set_attr "length" "*,*,*,*,4,4,4,4,4,4,4,8,8,*,8,*,*,*,*,*,4,*,4,*,*,*,*,*,4,8")
(set_attr "predicable" "yes,no,yes,no,yes,no,no,no,no,no,yes,no,no,yes,yes,no,no,no,no,no,no,no,no,no,no,no,no,no,no,no")
(set_attr "cpu_facility" "*,*,av1,av2,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,av2,av2,*,*,av2,*,*,av2,*")])
(set_attr "cpu_facility" "av1,av1,av1,av2,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,av2,av2,*,*,av2,*,*,av2,*")])
;; Sometimes generated by the epilogue code. We don't want to
;; recognize these addresses in general, because the limm is costly,
@ -1088,12 +1088,9 @@
(match_operand:DI 1 "general_operand" ""))]
""
"
{
/* Everything except mem = const or mem = mem can be done easily. */
if (GET_CODE (operands[0]) == MEM)
operands[1] = force_reg (DImode, operands[1]);
}")
if (prepare_move_operands (operands, DImode))
DONE;
")
(define_insn_and_split "*movdi_insn"
[(set (match_operand:DI 0 "move_dest_operand" "=w, w,r,m")
@ -1140,7 +1137,7 @@
;; Floating point move insns.
(define_expand "movsf"
[(set (match_operand:SF 0 "general_operand" "")
[(set (match_operand:SF 0 "move_dest_operand" "")
(match_operand:SF 1 "general_operand" ""))]
""
"if (prepare_move_operands (operands, SFmode)) DONE;")
@ -1161,7 +1158,7 @@
(set_attr "iscompact" "true,false,false,false,false")])
(define_expand "movdf"
[(set (match_operand:DF 0 "nonimmediate_operand" "")
[(set (match_operand:DF 0 "move_dest_operand" "")
(match_operand:DF 1 "general_operand" ""))]
""
"if (prepare_move_operands (operands, DFmode)) DONE;")
@ -1231,12 +1228,18 @@
; second time to put back the contents which the first DEXCLx
; will have overwritten
; dexcl2 r0, r1, r0
(set (match_dup 4) ; aka r0result
; aka DF, r1, r0
(unspec_volatile:SI [(match_dup 1) (match_dup 5) (match_dup 4)] VUNSPEC_ARC_DEXCL ))
(parallel [
(set (match_dup 4) ; aka r0result
; aka DF, r1, r0
(unspec_volatile:SI [(match_dup 5) (match_dup 4)]
VUNSPEC_ARC_DEXCL))
(clobber (match_dup 1))
])
; Generate the second, which makes sure operand5 and operand4 values
; are put back in the Dx register properly.
(unspec_volatile:SI [(match_dup 1) (match_dup 5) (match_dup 4)] VUNSPEC_ARC_DEXCL_NORES )
(set (match_dup 1) (unspec_volatile:DF
[(match_dup 5) (match_dup 4)]
VUNSPEC_ARC_DEXCL_NORES))
; Note: we cannot use a (clobber (match_scratch)) here because
; the combine pass will end up replacing uses of it with 0

3
gcc/config/arc/constraints.md
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@ -256,7 +256,8 @@
"@internal
constant for a highpart that can be checked with a shift (asr.f 0,rn,m)"
(and (match_code "const_int")
(match_test "IS_POWEROF2_P (-ival)")))
(match_test "IS_POWEROF2_P (-ival)")
(match_test "TARGET_BARREL_SHIFTER")))
(define_constraint "Clo"
"@internal

6
gcc/config/arc/fpu.md
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@ -193,11 +193,13 @@
(set_attr "type" "fpu")])
;; Division
(define_insn "divsf3"
(define_insn "*divsf3_fpu"
[(set (match_operand:SF 0 "register_operand" "=r,r,r,r,r")
(div:SF (match_operand:SF 1 "nonmemory_operand" "0,r,0,r,F")
(match_operand:SF 2 "nonmemory_operand" "r,r,F,F,r")))]
"TARGET_FP_SP_SQRT"
"TARGET_FP_SP_SQRT
&& (register_operand (operands[1], SFmode)
|| register_operand (operands[2], SFmode))"
"fsdiv%? %0,%1,%2"
[(set_attr "length" "4,4,8,8,8")
(set_attr "iscompact" "false")

26
gcc/config/arc/fpx.md
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@ -168,28 +168,26 @@
(set_attr "type" "lr")]
)
(define_insn "*dexcl_3op_peep2_insn"
[(set (match_operand:SI 0 "dest_reg_operand" "=r") ; not register_operand, to accept SUBREG
(unspec_volatile:SI [
(match_operand:DF 1 "arc_double_register_operand" "D")
(match_operand:SI 2 "shouldbe_register_operand" "r") ; r1
(match_operand:SI 3 "shouldbe_register_operand" "r") ; r0
] VUNSPEC_ARC_DEXCL ))
]
(unspec_volatile:SI
[(match_operand:SI 1 "shouldbe_register_operand" "r") ; r1
(match_operand:SI 2 "shouldbe_register_operand" "r") ; r0
] VUNSPEC_ARC_DEXCL ))
(clobber (match_operand:DF 3 "arc_double_register_operand" "=&D"))]
"TARGET_DPFP"
"dexcl%F1 %0, %2, %3"
"dexcl%F3 %0, %1, %2"
[(set_attr "type" "move")
(set_attr "length" "4")]
)
;; version which will not overwrite operand0
(define_insn "*dexcl_3op_peep2_insn_nores"
[ (unspec_volatile:SI [
(match_operand:DF 0 "arc_double_register_operand" "D")
(match_operand:SI 1 "shouldbe_register_operand" "r") ; r1
(match_operand:SI 2 "shouldbe_register_operand" "r") ; r0
] VUNSPEC_ARC_DEXCL_NORES )
(define_insn "dexcl_2op"
[(set (match_operand:DF 0 "arc_double_register_operand" "=D")
(unspec_volatile:DF
[(match_operand:SI 1 "shouldbe_register_operand" "r") ; r1
(match_operand:SI 2 "shouldbe_register_operand" "r") ; r0
] VUNSPEC_ARC_DEXCL_NORES))
]
"TARGET_DPFP"
"dexcl%F0 0, %1, %2"