ft32.opt (mnodiv): New.
* config/ft32/ft32.opt (mnodiv): New.
* config/ft32/ft32.md (*divsi3, *modsi3): Qualify with
TARGET_NODIV.
* doc/invoke.texi (FT32 Options -mnodiv): New.
* libgcc/config/ft32/lib1funcs.S (*divsi3, *modsi3): New.
From-SVN: r234516
This commit is contained in:
James Bowman
James Bowman
parent
a06c2388e6
commit
dc2e899536
@ -1,3 +1,10 @@
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2016-03-28 James Bowman <james.bowman@ftdichip.com>
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* config/ft32/ft32.opt (mnodiv): New.
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* config/ft32/ft32.md (*divsi3, *modsi3): Qualify with
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TARGET_NODIV.
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* doc/invoke.texi (FT32 Options -mnodiv): New.
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2016-03-28 Kirill Yukhin <kirill.yukhin@intel.com>
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PR target/70406
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@ -101,7 +101,7 @@
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(div:SI
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(match_operand:SI 1 "register_operand" "r,r")
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(match_operand:SI 2 "ft32_rimm_operand" "r,KA")))]
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""
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"!TARGET_NODIV"
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"div.l %0,%1,%2")
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(define_insn "modsi3"
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@ -109,7 +109,7 @@
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(mod:SI
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(match_operand:SI 1 "register_operand" "r,r")
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(match_operand:SI 2 "ft32_rimm_operand" "r,KA")))]
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""
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"!TARGET_NODIV"
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"mod.l %0,%1,%2")
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(define_insn "udivsi3"
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@ -117,7 +117,7 @@
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(udiv:SI
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(match_operand:SI 1 "register_operand" "r,r")
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(match_operand:SI 2 "ft32_rimm_operand" "r,KA")))]
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""
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"!TARGET_NODIV"
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"udiv.l %0,%1,%2")
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(define_insn "umodsi3"
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@ -125,7 +125,7 @@
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(umod:SI
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(match_operand:SI 1 "register_operand" "r,r")
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(match_operand:SI 2 "register_operand" "r,KA")))]
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""
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"!TARGET_NODIV"
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"umod.l %0,%1,%2")
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(define_insn "extvsi"
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@ -25,3 +25,7 @@ target the software simulator.
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mlra
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Target Report Var(ft32_lra_flag) Init(0) Save
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Use LRA instead of reload.
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mnodiv
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Target Report Mask(NODIV)
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Avoid use of the DIV and MOD instructions
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@ -712,7 +712,7 @@ Objective-C and Objective-C++ Dialects}.
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@gccoptlist{-msmall-model -mno-lsim}
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@emph{FT32 Options}
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@gccoptlist{-msim -mlra}
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@gccoptlist{-msim -mlra -mnodiv}
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@emph{FRV Options}
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@gccoptlist{-mgpr-32 -mgpr-64 -mfpr-32 -mfpr-64 @gol
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@ -15827,6 +15827,10 @@ I/O functions are needed.
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Enable Local Register Allocation. This is still experimental for FT32,
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so by default the compiler uses standard reload.
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@item -mnodiv
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@opindex mnodiv
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Do not use div and mod instructions.
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@end table
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@node FRV Options
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@ -1,3 +1,7 @@
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2016-03-28 James Bowman <james.bowman@ftdichip.com>
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* libgcc/config/ft32/lib1funcs.S (*divsi3, *modsi3): New.
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2016-03-22 Michael Meissner <meissner@linux.vnet.ibm.com>
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PR libgcc/70363
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@ -25,8 +25,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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# for implementation details of all except division which is detailed below
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#
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#ifdef L_fp_tools
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// .global __cmpsf2_
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nan: .long 0x7FFFFFFF # also abs mask
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inf: .long 0x7F800000
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sign_mask: .long 0x80000000
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@ -37,6 +37,14 @@ smallest_norm: .long 0x00800000 # implicit bit
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high_FF: .long 0xFF000000
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high_uint: .long 0xFFFFFFFF
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ntz_table:
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.byte 32,0,1,12,2,6,0,13,3,0,7,0,0,0,0,14
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.byte 10,4,0,0,8,0,0,25,0,0,0,0,0,21,27,15
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.byte 31,11,5,0,0,0,0,0,9,0,0,24,0,0,20,26
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.byte 30,0,0,0,0,23,0,19,29,0,22,18,28,17,16,0
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#endif
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# Supply a few 'missing' instructions
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# not
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@ -87,12 +95,6 @@ high_uint: .long 0xFFFFFFFF
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lpmi.b \x, \x, 0
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.endm
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ntz_table:
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.byte 32,0,1,12,2,6,0,13,3,0,7,0,0,0,0,14
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.byte 10,4,0,0,8,0,0,25,0,0,0,0,0,21,27,15
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.byte 31,11,5,0,0,0,0,0,9,0,0,24,0,0,20,26
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.byte 30,0,0,0,0,23,0,19,29,0,22,18,28,17,16,0
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# calculate leading zero count
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.macro nlz x, scr
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flip \x, \x, 31
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@ -503,6 +505,9 @@ mul_z0:
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## for implementation details
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#ifdef L_divsf3
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dc_1: .long 0xffffe7d7
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dc_2: .long 0xffffffe8
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dc_3: .long 0xffbad86f
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@ -517,9 +522,6 @@ dc_11: .long 0x0452b1bf
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dc_12: .long 0xFFFFFFC0
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spec_val_test: .long 0x7F7FFFFF
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#ifdef L_divsf3
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.global __divsf3
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__divsf3:
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push $r13
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@ -869,6 +871,7 @@ float_not_zero2:
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return
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#endif
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#if 0
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##########################################################################
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##########################################################################
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## float compare
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@ -913,7 +916,74 @@ cmp_is_gt:
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cmp_is_eq:
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ldk $r0, 0
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return
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#endif
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#ifdef L_udivsi3
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.global __udivsi3
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__udivsi3:
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# $r0 is dividend
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# $r1 is divisor
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ldk $r2,0
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push $r28
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ldk $r28,-32
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0:
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lshr $r3,$r0,31 # Shift $r2:$r0 left one
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ashl $r0,$r0,1
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ashl $r2,$r2,1
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or $r2,$r2,$r3
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cmp $r2,$r1
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jmpc b,1f
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2:
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sub $r2,$r2,$r1
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add $r0,$r0,1
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1:
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add $r28,$r28,1
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jmpx 31,$r28,1,0b
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pop $r28
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# $r0: quotient
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# $r2: remainder
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return
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#endif
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#ifdef L_umodsi3
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.global __umodsi3
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__umodsi3:
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call __udivsi3
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move $r0,$r2
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return
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#endif
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#ifdef L_divsi3
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.global __divsi3
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__divsi3:
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xor $r5,$r0,$r1 # $r5 is sign of result
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ashr $r2,$r0,31 # $r0 = abs($r0)
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xor $r0,$r0,$r2
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sub $r0,$r0,$r2
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ashr $r2,$r1,31 # $r1 = abs($r1)
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xor $r1,$r1,$r2
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sub $r1,$r1,$r2
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call __udivsi3
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ashr $r5,$r5,31
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xor $r0,$r0,$r5
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sub $r0,$r0,$r5
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return
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#endif
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#ifdef L_modsi3
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.global __modsi3
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__modsi3:
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move $r5,$r0 # $r5 is sign of result
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ashr $r2,$r0,31 # $r0 = abs($r0)
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xor $r0,$r0,$r2
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sub $r0,$r0,$r2
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ashr $r2,$r1,31 # $r1 = abs($r1)
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xor $r1,$r1,$r2
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sub $r1,$r1,$r2
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call __umodsi3
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ashr $r5,$r5,31
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xor $r0,$r0,$r5
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sub $r0,$r0,$r5
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return
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#endif
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@ -1,3 +1,7 @@
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LIB1ASMSRC = ft32/lib1funcs.S
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LIB1ASMFUNCS = \
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_udivsi3 _divsi3 _umodsi3 _modsi3
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LIB2ADD = $(srcdir)/config/ft32/epilog.S $(srcdir)/config/ft32/prolog.S
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crti-hw.o: $(srcdir)/config/ft32/crti-hw.S
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