Remove unecessary if statements when looping on ImplicitDefs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10444 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index 7ec4d32c1e88742f427afa364a3db0a80d1af1dc..358d5d0829df7fbdab3f48a9edd57b7254f17986 100644 (file)
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -237,9 +237,9 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &MF) {
       }
 
       // Loop over implicit defs, defining them.
-      if (const unsigned *ImplicitDefs = MID.ImplicitDefs)
-       for (unsigned i = 0; ImplicitDefs[i]; ++i)
-         HandlePhysRegDef(ImplicitDefs[i], MI);
+      for (const unsigned *ImplicitDefs = MID.ImplicitDefs;
+           *ImplicitDefs; ++ImplicitDefs)
+        HandlePhysRegDef(*ImplicitDefs, MI);
 
       // Process all explicit defs...
       for (unsigned i = 0; i != NumOperandsToProcess; ++i) {

diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index d1a6df09cc470160953171be2fb340143ad7ada7..4a3eb110c8d7c63637755a7e758572045e691603 100644 (file)
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -551,13 +551,13 @@ void RA::AllocateBasicBlock(MachineBasicBlock &MBB) {
       }
 
     // Loop over the implicit defs, spilling them as well.
-    if (const unsigned *ImplicitDefs = TID.ImplicitDefs)
-      for (unsigned i = 0; ImplicitDefs[i]; ++i) {
-        unsigned Reg = ImplicitDefs[i];
-        spillPhysReg(MBB, I, Reg);
-        PhysRegsUseOrder.push_back(Reg);
-        PhysRegsUsed[Reg] = 0;            // It is free and reserved now
-      }
+    for (const unsigned *ImplicitDefs = TID.ImplicitDefs;
+         *ImplicitDefs; ++ImplicitDefs) {
+      unsigned Reg = *ImplicitDefs;
+      spillPhysReg(MBB, I, Reg);
+      PhysRegsUseOrder.push_back(Reg);
+      PhysRegsUsed[Reg] = 0;            // It is free and reserved now
+    }
 
     // Okay, we have allocated all of the source operands and spilled any values
     // that would be destroyed by defs of this instruction.  Loop over the