GCC Machine Description - Programming language

GCC Machine Description is a programming language created in 2001.

#1118on PLDB

23Years Old

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Tags: programming language
There are at least 1,027 GCC Machine Description repos on GitHub
Early development of GCC Machine Description happened in University of Arizona
The Google BigQuery Public Dataset GitHub snapshot shows 856 users using GCC Machine Description in 878 repos on GitHub
GitHub supports syntax highlighting for GCC Machine Description
Read more about GCC Machine Description on the web: 1.

Example from Linguist:

;;- Machine description for the PDP-10.
;;  Copyright (C) 2001, 2002 Lars Brinkhoff.
;;  Contributed by Lars Brinkhoff <lars@nocrew.org>, funded by XKL, LLC.


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Index

;;   Front Page
;;   Index
;;   Constraints for Immediate Operands
;;   To-do List
;;   Instruction Wish-List
;;   Attributes
;;	length, skip, reorg_type
;;   Unspec Usage
;;	UNSPEC_ADJSP, UNSPEC_ADJBP, UNSPEC_ADDRESS, UNSPEC_FFO, UNSPEC_SUBBP,
;;	VUNSPEC_BLT, VUNSPEC_FSC, VUNSPEC_XBLT, VUNSPEC_MOVSLJ, VUNSPEC_MOVST
;;   Constants
;;      RIGHT_HALF, LEFT_HALF, SIGNBIT, SP_REGNUM
;;   Optimizations
;;   Data Movement
;;	LDB, ILDB, (LDBI), LDBE, ILDBE, (LDBEI), DPB, IDPB, (DPBI),
;;	HRR, HRL, HLR, HLL, HRRM, HRLM, HLRM, HLLM,
;;	HRRZ, HRLZ, HLRZ, HLLZ, HRRE, HRLE, HLRE, HLLE,
;;	SETZM, SETOM,
;;	MOVE, MOVEI, MOVSI, HRLOI, HRROI, MOVEM,
;;	MOVS, EXCH, SETZB,
;;	DMOVE, DMOVEM,
;;	BLT, XBLT, (MOVSLJ), (MOVST), (CMPS)
;;   Conditional Data Movement
;;	SKIPL, SKIPE, SKIPLE, SKIPGE, SKIPN, SKIPG,
;;	TDZA
;;   Integer Arithmetic
;;	AOS, SOS,
;;	ADD, ADDI, ADDM, ADDB, DADD,
;;	SUB, SUBI, SUBM, SUBB, DSUB,
;;	IMUL, IMULI, IMULM, IMULB, MUL, MULI, MULM, MULB, DMUL,
;;	IDIV, IDIVI, IDIVM, DIV, DIVI, DIVM, DDIV,
;;	UIDIV, UIDIVI, UIDIVM, UIMOD, UIMODI, UIMODM,
;;	MOVN, MOVNM, MOVNS, MOVNI, DMOVN, DMOVNM,
;;	MOVM, MOVMM, MOVMS,
;;	FFS
;;   Integer Conversions
;;	ANDI, HRRZ, SEXT, HRRE, ANDI, HRR
;;   Shifting and Rotating
;;	LSH, LSHC, ASH, ASHC, ROT, ROTC
;;   Logical Operations
;;	AND, ANDI, ANDM, ANDB, TLZ, ANDCMI,
;;	ANDCA, ANDCAI, ANDCAM, ANDCAB, ANDCBI,
;;	ANDCM, ANDCMM, ANDCMB,
;;	XOR, XORI, XORM, XORB, TLC, EQVI,
;;	IOR, IORI, IORM, IORB, TLO, ORCMI,
;;	ANDCB, ANDCBM, ANDCBB,
;;	EQV, EQVM, EQVB,
;;	SETCA, SETCAM, SETCAB,
;;	SETCM, SETCMM, SETCMB,
;;	ORCA, ORCAI, ORCAM, ORCAB, ORCBI,
;;	ORCM, ORCMM, ORCMB,
;;	ORCB, ORCBM, ORCBB
;;   Floating-point Arithmetic
;;	FADR, FADRI, FADRM, FADRB, DFAD, GFAD,
;;	FSBR, FSBRI, FSBRM, FSBRB, DFSB,

Language features

Feature	Supported	Example	Token
Comments	✓	; A comment
Line Comments	✓	; A comment	;
Semantic Indentation	X