Abstract

lcc is a new retargetable compiler for ANSI C. Versions for the VAX, Motorola 68020, SPARC, and MIPS are in production use at Princeton University and at AT&T Bell Laboratories. With a few exceptions, little about lcc is unusual --- it integrates several well engineered, existing techniques --- but it is smaller and faster than most other C compilers, and it generates code of comparable quality. lcc's target-independent front end performs a few simple, but e#ective, optimizations that contribute to good code; examples include simulating register declarations and partitioning switch statement cases into dense tables. It also implements target-independent function tracing and expression-level profiling. Introduction Reprinted from SIGPLAN Notices 26, 10 (Oct. 1991), 29--43. Copyright 1991, Association for Computing Machinery, Inc., reprinted by permission. lcc is a new retargetable compiler for ANSI C [2]. It has been ported to the VAX, Motorola 68020, SPARC, and MIPS R3000, a...

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