6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-22 23:24:59 +00:00
Code Issues Projects Releases Wiki Activity

Use discriminator information in sample profiles.

Browse Source 
Summary:
When the sample profiles include discriminator information,
use the discriminator values to distinguish instruction weights
in different basic blocks.

This modifies the BodySamples mapping to map <line, discriminator> pairs
to weights. Instructions on the same line but different blocks, will
use different discriminator values. This, in turn, means that the blocks
may have different weights.

Other changes in this patch:

- Add tests for positive values of line offset, discriminator and samples.
- Change data types from uint32_t to unsigned and int and do additional
  validation.

Reviewers: chandlerc

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2857

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203508 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Diego Novillo
2014-03-10 22:41:28 +00:00
parent e45534d027
commit 87393cfd6b
11 changed files with 254 additions and 91 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
test/Transforms/SampleProfile/branch.ll
View File

@@ -117,17 +117,17 @@ attributes #4 = { nounwind readonly }
!16 = metadata !{i32 786468, null, null, metadata !"double", i32 0, i64 64, i64 64, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ] [double] [line 0, size 64, align 64, offset 0, enc DW_ATE_float]
!17 = metadata !{i32 786688, metadata !4, metadata !"limit", metadata !5, i32 8, metadata !8, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [limit] [line 8]
!18 = metadata !{i32 786688, metadata !19, metadata !"s", metadata !5, i32 10, metadata !16, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [s] [line 10]
!19 = metadata !{i32 786443, metadata !1, metadata !20, i32 9, i32 0, i32 2} ; [ DW_TAG_lexical_block ] [./branch.cc]
!20 = metadata !{i32 786443, metadata !1, metadata !4, i32 9, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [./branch.cc]
!19 = metadata !{i32 786443, metadata !1, metadata !20, i32 9, i32 0, i32 0, i32 2} ; [ DW_TAG_lexical_block ] [./branch.cc]
!20 = metadata !{i32 786443, metadata !1, metadata !4, i32 9, i32 0, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [./branch.cc]
!21 = metadata !{i32 786688, metadata !22, metadata !"u", metadata !5, i32 11, metadata !8, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [u] [line 11]
!22 = metadata !{i32 786443, metadata !1, metadata !19, i32 11, i32 0, i32 3} ; [ DW_TAG_lexical_block ] [./branch.cc]
!22 = metadata !{i32 786443, metadata !1, metadata !19, i32 11, i32 0, i32 0, i32 3} ; [ DW_TAG_lexical_block ] [./branch.cc]
!23 = metadata !{i32 786688, metadata !24, metadata !"x", metadata !5, i32 12, metadata !16, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [x] [line 12]
!24 = metadata !{i32 786443, metadata !1, metadata !22, i32 11, i32 0, i32 4} ; [ DW_TAG_lexical_block ] [./branch.cc]
!24 = metadata !{i32 786443, metadata !1, metadata !22, i32 11, i32 0, i32 0, i32 4} ; [ DW_TAG_lexical_block ] [./branch.cc]
!25 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!26 = metadata !{metadata !"clang version 3.4 (trunk 192896) (llvm/trunk 192895)"}
!27 = metadata !{i32 4, i32 0, metadata !4, null}
!28 = metadata !{i32 5, i32 0, metadata !29, null}
!29 = metadata !{i32 786443, metadata !1, metadata !4, i32 5, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [./branch.cc]
!29 = metadata !{i32 786443, metadata !1, metadata !4, i32 5, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [./branch.cc]
!30 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ]
!31 = metadata !{metadata !32, metadata !32, i64 0}
!32 = metadata !{metadata !"any pointer", metadata !33, i64 0}