[llvm-commits] CVS: llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp

[Jim Laskey]

Changes in directory llvm/lib/Target/PowerPC:

PPC32ISelPattern.cpp updated: 1.149 -> 1.150
---
Log message:

Handle loading of 0x????0000 constants with a single instruction.



---
Diffs of the changes:  (+9 -5)

 PPC32ISelPattern.cpp |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)


Index: llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
diff -u llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp:1.149 llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp:1.150
--- llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp:1.149	Wed Aug 17 19:15:15 2005
+++ llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp	Thu Aug 18 10:52:30 2005
@@ -1738,12 +1738,16 @@
     case MVT::i32:
       {
         int v = (int)cast<ConstantSDNode>(N)->getSignExtended();
-        if (v < 32768 && v >= -32768) {
-          BuildMI(BB, PPC::LI, 1, Result).addSImm(v);
-        } else {
+        unsigned Hi = Hi16(v);
+        unsigned Lo = Lo16(v);
+        if (Hi && Lo) {
           Tmp1 = MakeIntReg();
-          BuildMI(BB, PPC::LIS, 1, Tmp1).addSImm(v >> 16);
-          BuildMI(BB, PPC::ORI, 2, Result).addReg(Tmp1).addImm(v & 0xFFFF);
+          BuildMI(BB, PPC::LIS, 1, Tmp1).addSImm(Hi);
+          BuildMI(BB, PPC::ORI, 2, Result).addReg(Tmp1).addImm(Lo);
+        } else if (Lo) {
+          BuildMI(BB, PPC::LI, 1, Result).addSImm(Lo);
+        } else {
+          BuildMI(BB, PPC::LIS, 1, Result).addSImm(Hi);
         }
       }
     }