| commit | 0242b9b543b47b770ff5e612f73ec3b5167bd1dd | [log] [tgz] |
|---|---|---|
| author | Micah Villmow <villmow@gmail.com> | Wed Oct 10 20:50:51 2012 +0000 |
| committer | Micah Villmow <villmow@gmail.com> | Wed Oct 10 20:50:51 2012 +0000 |
| tree | c0e4f08bebb936b97eee8bcc2aa9c37d4d157463 | |
| parent | c399c753d9f22da10d06d2fa5e37e9ebad7bf665 [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) llvm-svn: 165655