Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects

that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674

1 files changed, 1 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/DwarfWriter.cpp b/llvm/lib/CodeGen/DwarfWriter.cpp
index 17373fe2e6f..0fb71760d13 100644
--- a/llvm/lib/CodeGen/DwarfWriter.cpp
+++ b/llvm/lib/CodeGen/DwarfWriter.cpp
@@ -3147,15 +3147,13 @@ private:
     // Whether the last callsite entry was for an invoke.
     bool PreviousIsInvoke = false;
 
-    const TargetInstrInfo *TII = MF->getTarget().getInstrInfo();
-
     // Visit all instructions in order of address.
     for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
          I != E; ++I) {
       for (MachineBasicBlock::const_iterator MI = I->begin(), E = I->end();
            MI != E; ++MI) {
         if (MI->getOpcode() != TargetInstrInfo::LABEL) {
-          SawPotentiallyThrowing |= TII->isCall(MI->getOpcode());
+          SawPotentiallyThrowing |= MI->getDesc()->isCall();
           continue;
         }