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6a3fc71397
* Update dependencies and go1.18 * Exclude unnecessary linters and update build to go1.18
128 lines
2.3 KiB
ArmAsm
128 lines
2.3 KiB
ArmAsm
// Code generated by command: go run gen_fse.go -out ../fse_decoder_amd64.s -pkg=zstd. DO NOT EDIT.
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//go:build !appengine && !noasm && gc && !noasm
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// +build !appengine,!noasm,gc,!noasm
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// func buildDtable_asm(s *fseDecoder, ctx *buildDtableAsmContext) int
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TEXT ·buildDtable_asm(SB), $0-24
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MOVQ ctx+8(FP), CX
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MOVQ s+0(FP), DI
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// Load values
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MOVBQZX 4098(DI), DX
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XORQ AX, AX
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BTSQ DX, AX
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MOVQ (CX), BX
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MOVQ 16(CX), SI
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LEAQ -1(AX), R8
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MOVQ 8(CX), CX
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MOVWQZX 4096(DI), DI
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// End load values
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// Init, lay down lowprob symbols
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XORQ R9, R9
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JMP init_main_loop_condition
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init_main_loop:
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MOVWQSX (CX)(R9*2), R10
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CMPW R10, $-1
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JNE do_not_update_high_threshold
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MOVB R9, 1(SI)(R8*8)
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DECQ R8
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MOVQ $0x0000000000000001, R10
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do_not_update_high_threshold:
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MOVW R10, (BX)(R9*2)
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INCQ R9
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init_main_loop_condition:
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CMPQ R9, DI
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JL init_main_loop
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// Spread symbols
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// Calculate table step
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MOVQ AX, R9
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SHRQ $0x01, R9
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MOVQ AX, R10
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SHRQ $0x03, R10
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LEAQ 3(R9)(R10*1), R9
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// Fill add bits values
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LEAQ -1(AX), R10
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XORQ R11, R11
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XORQ R12, R12
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JMP spread_main_loop_condition
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spread_main_loop:
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XORQ R13, R13
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MOVWQSX (CX)(R12*2), R14
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JMP spread_inner_loop_condition
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spread_inner_loop:
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MOVB R12, 1(SI)(R11*8)
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adjust_position:
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ADDQ R9, R11
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ANDQ R10, R11
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CMPQ R11, R8
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JG adjust_position
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INCQ R13
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spread_inner_loop_condition:
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CMPQ R13, R14
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JL spread_inner_loop
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INCQ R12
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spread_main_loop_condition:
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CMPQ R12, DI
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JL spread_main_loop
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TESTQ R11, R11
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JZ spread_check_ok
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MOVQ ctx+8(FP), AX
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MOVQ R11, 24(AX)
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MOVQ $+1, ret+16(FP)
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RET
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spread_check_ok:
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// Build Decoding table
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XORQ DI, DI
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build_table_main_table:
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MOVBQZX 1(SI)(DI*8), CX
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MOVWQZX (BX)(CX*2), R8
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LEAQ 1(R8), R9
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MOVW R9, (BX)(CX*2)
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MOVQ R8, R9
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BSRQ R9, R9
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MOVQ DX, CX
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SUBQ R9, CX
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SHLQ CL, R8
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SUBQ AX, R8
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MOVB CL, (SI)(DI*8)
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MOVW R8, 2(SI)(DI*8)
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CMPQ R8, AX
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JLE build_table_check1_ok
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MOVQ ctx+8(FP), CX
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MOVQ R8, 24(CX)
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MOVQ AX, 32(CX)
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MOVQ $+2, ret+16(FP)
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RET
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build_table_check1_ok:
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TESTB CL, CL
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JNZ build_table_check2_ok
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CMPW R8, DI
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JNE build_table_check2_ok
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MOVQ ctx+8(FP), AX
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MOVQ R8, 24(AX)
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MOVQ DI, 32(AX)
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MOVQ $+3, ret+16(FP)
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RET
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build_table_check2_ok:
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INCQ DI
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CMPQ DI, AX
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JL build_table_main_table
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MOVQ $+0, ret+16(FP)
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RET
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