commit fe895e3d87c43863ff31f9160461ea696b025202
author Andrew Lenharth <andrewl@lenharth.org> Mon Jun 27 17:15:36 2005 +0000
committer Andrew Lenharth <andrewl@lenharth.org> Mon Jun 27 17:15:36 2005 +0000
tree 87a770eaca0920d44ebb0b33964f94df51977ee6
parent b72bcbb42b5fba50a7dc6cfc6d3b734886321694

Reduce use of pseudo ops
Namely, output the rellocation flags explicitly when loading constants.
Added benifit: save a load when loading from the constant pool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22296 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Alpha/AlphaISelPattern.cpp

diff --git a/lib/Target/Alpha/AlphaISelPattern.cpp b/lib/Target/Alpha/AlphaISelPattern.cpp
index f1a9191..c5060d3 100644
--- a/lib/Target/Alpha/AlphaISelPattern.cpp
+++ b/lib/Target/Alpha/AlphaISelPattern.cpp
@@ -852,6 +852,18 @@
   case Alpha::STB: return Alpha::STB_SYM;
   }
 }
+static unsigned GetRelVersion(unsigned opcode)
+{
+  switch (opcode) {
+  default: assert(0 && "unknown load or store"); return 0;
+  case Alpha::LDQ: return Alpha::LDQr;
+  case Alpha::LDS: return Alpha::LDSr;
+  case Alpha::LDT: return Alpha::LDTr;
+  case Alpha::LDL: return Alpha::LDLr;
+  case Alpha::LDBU: return Alpha::LDBUr;
+  case Alpha::LDWU: return Alpha::LDWUr;
+  }
+}
 
 void AlphaISel::MoveFP2Int(unsigned src, unsigned dst, bool isDouble)
 {
@@ -1234,9 +1246,11 @@
       }
       else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Address)) {
         AlphaLowering.restoreGP(BB);
-        Opc = GetSymVersion(Opc);
+        Opc = GetRelVersion(Opc);
         has_sym = true;
-        BuildMI(BB, Opc, 1, Result).addConstantPoolIndex(CP->getIndex());
+        Tmp1 = MakeReg(MVT::i64);
+        BuildMI(BB, Alpha::LDAHr, 2, Tmp1).addConstantPoolIndex(CP->getIndex()).addReg(Alpha::R29);
+        BuildMI(BB, Opc, 2, Result).addConstantPoolIndex(CP->getIndex()).addReg(Tmp1);
       }
       else if(Address.getOpcode() == ISD::FrameIndex) {
         BuildMI(BB, Opc, 2, Result)
@@ -1321,7 +1335,9 @@
       {
         AlphaLowering.restoreGP(BB);
         has_sym = true;
-        BuildMI(BB, Alpha::LDS_SYM, 1, Tmp1).addConstantPoolIndex(CP->getIndex());
+        Tmp2 = MakeReg(MVT::i64);
+        BuildMI(BB, Alpha::LDAHr, 2, Tmp2).addConstantPoolIndex(CP->getIndex()).addReg(Alpha::R29);
+        BuildMI(BB, Alpha::LDSr, 2, Tmp1).addConstantPoolIndex(CP->getIndex()).addReg(Tmp2);
       }
       else if(Address.getOpcode() == ISD::FrameIndex) {
         Tmp2 = cast<FrameIndexSDNode>(Address)->getIndex();
@@ -1532,9 +1548,11 @@
       }
       else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Address)) {
         AlphaLowering.restoreGP(BB);
-        Opc = GetSymVersion(Opc);
+        Opc = GetRelVersion(Opc);
         has_sym = true;
-        BuildMI(BB, Opc, 1, Result).addConstantPoolIndex(CP->getIndex());
+        Tmp1 = MakeReg(MVT::i64);
+        BuildMI(BB, Alpha::LDAHr, 2, Tmp1).addConstantPoolIndex(CP->getIndex()).addReg(Alpha::R29);
+        BuildMI(BB, Opc, 2, Result).addConstantPoolIndex(CP->getIndex()).addReg(Tmp1);
       }
       else if(Address.getOpcode() == ISD::FrameIndex) {
         BuildMI(BB, Opc, 2, Result)
@@ -2219,7 +2237,10 @@
         ConstantUInt *C = ConstantUInt::get(Type::getPrimitiveType(Type::ULongTyID) , val);
         unsigned CPI = CP->getConstantPoolIndex(C);
         AlphaLowering.restoreGP(BB);
-        BuildMI(BB, Alpha::LDQ_SYM, 1, Result).addConstantPoolIndex(CPI);
+        has_sym = true;
+        Tmp1 = MakeReg(MVT::i64);
+        BuildMI(BB, Alpha::LDAHr, 2, Tmp1).addConstantPoolIndex(CPI).addReg(Alpha::R29);
+        BuildMI(BB, Alpha::LDQr, 2, Result).addConstantPoolIndex(CPI).addReg(Tmp1);
       }
       return Result;
     }