The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Jan. 10, 2017
International Business Machines Corporation, Armonk, NY (US);
Michael Karl Gschwind, Chappaqua, NY (US);
Ulrich Weigand, Holzgerlingen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and associated computer program product are disclosed for generating an object file for subsequent linking by a linker. The method comprises inserting at least one save instruction before a function call instruction and at least one restore instruction after the function call instruction, the at least one save instruction and the least one restore instruction corresponding to one or more call-clobbered registers. The method further comprises generating a first list of registers that are referenced by the function. The function call instruction includes a first annotation referencing the restore instruction, and the restore instruction includes a second annotation referencing the save instruction. The first and second annotations configure the linker to determine whether to eliminate the save instruction and the restore instruction corresponding to at least one of the one or more call-clobbered registers.