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| author | Manman Ren <mren@apple.com> | 2012-09-15 00:39:57 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2012-09-15 00:39:57 +0000 |
| commit | bfb9d435e43a41531720befc94f990c8daa379ff (patch) | |
| tree | ff7531837f900e958848a22f0eef5339de9b2f3a /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | 1e46d48814c475503cf8469076949c0523ba1613 (diff) | |
| download | bcm5719-llvm-bfb9d435e43a41531720befc94f990c8daa379ff.tar.gz bcm5719-llvm-bfb9d435e43a41531720befc94f990c8daa379ff.zip | |
PGO: preserve branch-weight metadata when simplifying two branches with a common
destination.
Updated previous implementation to fix a case not covered:
// PBI: br i1 %x, TrueDest, BB
// BI: br i1 %y, TrueDest, FalseDest
The other case was handled correctly.
// PBI: br i1 %x, BB, FalseDest
// BI: br i1 %y, TrueDest, FalseDest
Also tried to use 64-bit arithmetic instead of APInt with scale to simplify the
computation. Let me know if you have other opinions about this.
llvm-svn: 163954
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions
