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| author | Micah Villmow <villmow@gmail.com> | 2012-10-10 20:50:51 +0000 |
|---|---|---|
| committer | Micah Villmow <villmow@gmail.com> | 2012-10-10 20:50:51 +0000 |
| commit | d6458a0aa12ef831ff45d1ce55a89a70ed091cbe (patch) | |
| tree | a0921b30ef19879a216252acf056f1d12e66b8a3 /lib/Analysis/ScalarEvolutionExpander.cpp | |
| parent | d2139c4e7aaeb03358638b14a589c0dc25521435 (diff) | |
Add in support for expansion of all of the comparison operations to the absolute minimum required set. This allows a backend to expand any arbitrary set of comparisons as long as a minimum set is supported.
The minimum set of required instructions is ISD::AND, ISD::OR, ISD::SETO(or ISD::SETOEQ) and ISD::SETUO(or ISD::SETUNE). Everything is expanded into one of two patterns:
Pattern 1: (LHS CC1 RHS) Opc (LHS CC2 RHS)
Pattern 2: (LHS CC1 LHS) Opc (RHS CC2 RHS)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165655 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ScalarEvolutionExpander.cpp')
0 files changed, 0 insertions, 0 deletions