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

[Nate Begeman]

Changes in directory llvm/lib/Target/PowerPC:

PPCISelLowering.cpp updated: 1.37 -> 1.38
---
Log message:

Correctly Expand or Promote FP_TO_UINT based on the capabilities of the
machine.  This allows us to generate great code for i32 FP_TO_UINT now on
targets with 64 bit extensions.


---
Diffs of the changes:  (+5 -3)

 PPCISelLowering.cpp |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)


Index: llvm/lib/Target/PowerPC/PPCISelLowering.cpp
diff -u llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.37 llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.38
--- llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.37	Tue Oct 25 15:54:57 2005
+++ llvm/lib/Target/PowerPC/PPCISelLowering.cpp	Tue Oct 25 18:48:36 2005
@@ -81,9 +81,6 @@
   setOperationAction(ISD::BRCOND,       MVT::Other, Expand);
   setOperationAction(ISD::BRCONDTWOWAY, MVT::Other, Expand);
   
-  // PowerPC does not have FP_TO_UINT
-  setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
-  
   // PowerPC turns FP_TO_SINT into FCTIWZ and some load/stores.
   setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
 
@@ -98,6 +95,11 @@
     // They also have instructions for converting between i64 and fp.
     setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
     setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
+    // To take advantage of the above i64 FP_TO_SINT, promote i32 FP_TO_UINT
+    setOperationAction(ISD::FP_TO_UINT, MVT::i32, Promote);
+  } else {
+    // PowerPC does not have FP_TO_UINT on 32 bit implementations.
+    setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
   }
 
   if (TM.getSubtarget<PPCSubtarget>().has64BitRegs()) {