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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 | 062986c2f0a020c0652010e3c8549653397048f4 (patch) | |
| tree | 120e419524ae376b89f5a68d8480e01ce712ea86 /lib/CodeGen/MachineScheduler.cpp | |
| parent | 3cbd1786ac06fe751dc4b5ad55e75115cb1d51ce (diff) | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163954 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineScheduler.cpp')
0 files changed, 0 insertions, 0 deletions