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4 Commits

Author SHA1 Message Date
Rafael Espindola 3b1ecb563f Make test more realistic. 
It doesn't make mach sense to fetch less than 64 bits from a got
entry.

llvm-svn: 271116
 2016-05-28 15:38:13 +00:00
George Rimar 5c33b91bbe [ELF] - Implemented optimization for R_X86_64_GOTPCREL relocation. 
System V Application Binary Interface AMD64 Architecture Processor Supplement Draft Version 0.99.8 
(https://github.com/hjl-tools/x86-psABI/wiki/x86-64-psABI-r249.pdf, B.2 "B.2 Optimize GOTPCRELX Relocations")
introduces possible relaxations for R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX.

That patch implements the next relaxation: 
mov foo@GOTPCREL(%rip), %reg => lea foo(%rip), %reg
and also opens door for implementing all other ones.

Implementation was suggested by Rafael Ávila de Espíndola with few additions and testcases by myself.

Differential revision: http://reviews.llvm.org/D15779

llvm-svn: 270705
 2016-05-25 14:31:37 +00:00
Rafael Espindola fe3a2f1b81 Revert "Simplify. Thanks to Rui for the suggestion." 
This reverts commit r270551.

Sorry, I commited the wrong branch :-(

llvm-svn: 270554
 2016-05-24 12:12:06 +00:00
Rafael Espindola dba64b8ea4 Simplify. Thanks to Rui for the suggestion. 
llvm-svn: 270551
 2016-05-24 11:53:15 +00:00