4 Commits

Author	SHA1	Message	Date
Fangrui Song	962b29d716	ELFObjectWriter: Don't sort non-local symbols ... As we don't sort local symbols, don't sort non-local symbols. This makes non-local symbols appear in their register order, which matches GNU as. The register order is nice in that you can write tests with interleaved CHECK prefixes, e.g. ``` // CHECK: something about foo .globl foo foo: // CHECK: something about bar .globl bar bar: ``` With the lexicographical order, the user needs to place lexicographical smallest symbol first or keep CHECK prefixes in one place.	2021-02-13 10:32:27 -08:00
Fangrui Song	d4306e90cb	[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 ... Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958	2019-09-16 07:05:34 +00:00
Fangrui Song	b159906a9a	[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC ... Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651	2019-05-01 05:49:01 +00:00
Michael J. Spencer	b842725c1d	[ELF] Add profile guided section layout ... This adds profile guided layout using the Call-Chain Clustering (C³) heuristic from https://research.fb.com/wp-content/uploads/2017/01/cgo2017-hfsort-final1.pdf . RFC: [llvm-dev] [RFC] Profile guided section layout http://lists.llvm.org/pipermail/llvm-dev/2017-June/114178.html Pass `--call-graph-ordering-file <file>` to read a call graph profile where each line has the format: <from symbol> <to symbol> <call count> Differential Revision: https://reviews.llvm.org/D36351 llvm-svn: 330234	2018-04-17 23:30:05 +00:00