[llvm-commits] CVS: llvm/lib/Target/X86/X86ISelSimple.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/X86:

X86ISelSimple.cpp updated: 1.310 -> 1.311
---
Log message:

Fix SingleSource/Regression/C/2005-05-06-LongLongSignedShift.c, we were not
properly sign extending the top of the result of a 64-bit shift right by
a constant > 32.


---
Diffs of the changes:  (+5 -1)

 X86ISelSimple.cpp |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletion(-)


Index: llvm/lib/Target/X86/X86ISelSimple.cpp
diff -u llvm/lib/Target/X86/X86ISelSimple.cpp:1.310 llvm/lib/Target/X86/X86ISelSimple.cpp:1.311
--- llvm/lib/Target/X86/X86ISelSimple.cpp:1.310	Thu Mar 24 11:32:10 2005
+++ llvm/lib/Target/X86/X86ISelSimple.cpp	Wed Apr  6 15:59:35 2005
@@ -3074,7 +3074,11 @@
         } else {
           BuildMI(*MBB, IP, isSigned ? X86::SAR32ri : X86::SHR32ri, 2,
                   DestReg).addReg(SrcReg+1).addImm(Amount);
-          BuildMI(*MBB, IP, X86::MOV32ri, 1, DestReg+1).addImm(0);
+          if (isSigned)
+            BuildMI(*MBB, IP, X86::SAR32ri, 2,
+                    DestReg+1).addReg(SrcReg+1).addImm(31);
+          else
+            BuildMI(*MBB, IP, X86::MOV32ri, 1, DestReg+1).addImm(0);
         }
       }
     } else {