[llvm-commits] CVS: llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/PowerPC:

PPC32ISelSimple.cpp updated: 1.113 -> 1.114
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Log message:

Fix test/Regression/CodeGen/PowerPC/2004-11-30-shift-crash.ll


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Diffs of the changes:  (+6 -1)

Index: llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp
diff -u llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp:1.113 llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp:1.114
--- llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp:1.113	Fri Nov 26 22:45:11 2004
+++ llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp	Tue Nov 30 00:29:10 2004
@@ -2766,7 +2766,12 @@
     // than for a variable shift by using the rlwimi instruction.
     if (ConstantUInt *CUI = dyn_cast<ConstantUInt>(ShiftAmount)) {
       unsigned Amount = CUI->getValue();
-      if (Amount < 32) {
+      if (Amount == 0) {
+        BuildMI(*MBB, IP, PPC::OR, 2, DestReg).addReg(SrcReg).addReg(SrcReg);
+        BuildMI(*MBB, IP, PPC::OR, 2, DestReg+1)
+          .addReg(SrcReg+1).addReg(SrcReg+1);
+
+      } else if (Amount < 32) {
         unsigned TempReg = makeAnotherReg(ResultTy);
         if (isLeftShift) {
           BuildMI(*MBB, IP, PPC::RLWINM, 4, TempReg).addReg(SrcReg)