[llvm-commits] CVS: llvm/lib/Target/X86/X86ISelPattern.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/X86:

X86ISelPattern.cpp updated: 1.27 -> 1.28
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Log message:

Teach the address selector to make 'reg+reg' addressing modes.


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Diffs of the changes:  (+11 -2)

Index: llvm/lib/Target/X86/X86ISelPattern.cpp
diff -u llvm/lib/Target/X86/X86ISelPattern.cpp:1.27 llvm/lib/Target/X86/X86ISelPattern.cpp:1.28
--- llvm/lib/Target/X86/X86ISelPattern.cpp:1.27	Mon Jan 10 22:31:30 2005
+++ llvm/lib/Target/X86/X86ISelPattern.cpp	Mon Jan 10 22:40:19 2005
@@ -443,9 +443,18 @@
   }
   }
 
-  if (AM.BaseType != X86AddressMode::RegBase ||
-      AM.Base.Reg)
+  // Is the base register already occupied?
+  if (AM.BaseType != X86AddressMode::RegBase || AM.Base.Reg) {
+    // If so, check to see if the scale index register is set.
+    if (AM.IndexReg == 0) {
+      AM.IndexReg = SelectExpr(N);
+      AM.Scale = 1;
+      return false;
+    }
+
+    // Otherwise, we cannot select it.
     return true;
+  }
 
   // Default, generate it as a register.
   AM.BaseType = X86AddressMode::RegBase;