33 lines
562 B
ArmAsm
33 lines
562 B
ArmAsm
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// Code generated by command: go run asm.go -out issue122.s -stubs stub.go. DO NOT EDIT.
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#include "textflag.h"
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// func Triangle(n uint64) uint64
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TEXT ·Triangle(SB), NOSPLIT, $0-16
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MOVQ n+0(FP), AX
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// Initialize sum register to zero.
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XORQ CX, CX
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loop_even:
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loop_odd:
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// Loop until n is zero.
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CMPQ AX, $0x00
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JE done
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// Add n to sum.
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ADDQ AX, CX
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// Decrement n.
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DECQ AX
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// Jump to one of the loop labels depending on parity.
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TESTQ $0x00000001, AX
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JZ loop_even
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JMP loop_odd
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done:
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// Store sum to return value.
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MOVQ CX, ret+8(FP)
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RET
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