diff options
| author | Hal Finkel <hfinkel@anl.gov> | 2013-04-20 05:16:26 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-04-20 05:16:26 +0000 |
| commit | abe64dc6f7363c7e6170568e382fb06d81d62f51 (patch) | |
| tree | 476ca3e25085fe35bdb7a3ac5387a3d028bb0f38 /lib/Target/PowerPC/MCTargetDesc | |
| parent | 456ca048af35163b9f52187e92a23ee0a9f059e8 (diff) | |
| download | external_llvm-abe64dc6f7363c7e6170568e382fb06d81d62f51.zip external_llvm-abe64dc6f7363c7e6170568e382fb06d81d62f51.tar.gz external_llvm-abe64dc6f7363c7e6170568e382fb06d81d62f51.tar.bz2 | |
Move PPC getSwappedPredicate for reuse
The getSwappedPredicate function can be used in other places (such as in
improvements to the PPCCTRLoops pass). Instead of trapping it as a static
function in PPCInstrInfo, move it into PPCPredicates with other
predicate-related things.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179926 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/MCTargetDesc')
| -rw-r--r-- | lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp | 15 | ||||
| -rw-r--r-- | lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h | 4 |
2 files changed, 19 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp index d84eb9c..853e505 100644 --- a/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp +++ b/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp @@ -29,3 +29,18 @@ PPC::Predicate PPC::InvertPredicate(PPC::Predicate Opcode) { } llvm_unreachable("Unknown PPC branch opcode!"); } + +PPC::Predicate PPC::getSwappedPredicate(PPC::Predicate Opcode) { + switch (Opcode) { + case PPC::PRED_EQ: return PPC::PRED_EQ; + case PPC::PRED_NE: return PPC::PRED_NE; + case PPC::PRED_LT: return PPC::PRED_GT; + case PPC::PRED_GE: return PPC::PRED_LE; + case PPC::PRED_GT: return PPC::PRED_LT; + case PPC::PRED_LE: return PPC::PRED_GE; + case PPC::PRED_NU: return PPC::PRED_NU; + case PPC::PRED_UN: return PPC::PRED_UN; + } + llvm_unreachable("Unknown PPC branch opcode!"); +} + diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h b/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h index ad2b018..444758c 100644 --- a/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h +++ b/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h @@ -37,6 +37,10 @@ namespace PPC { /// Invert the specified predicate. != -> ==, < -> >=. Predicate InvertPredicate(Predicate Opcode); + + /// Assume the condition register is set by MI(a,b), return the predicate if + /// we modify the instructions such that condition register is set by MI(b,a). + Predicate getSwappedPredicate(Predicate Opcode); } } |