Implement i64<->fp using the fctidz/fcfid instructions on PowerPC when we
are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts,
such as the PowerPC 970.
This speeds up 189.lucas from 81.99 to 32.64 seconds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23250 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index 924a672..eecbfda 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -29,9 +29,15 @@
///
FSEL,
- /// FCTIWZ - The FCTIWZ instruction, taking an f32 or f64 operand,
- /// producing an f64 value.
- FCTIWZ,
+ /// FCFID - The FCFID instruction, taking an f64 operand and producing
+ /// and f64 value containing the FP representation of the integer that
+ /// was temporarily in the f64 operand.
+ FCFID,
+
+ /// FCTI[D,W]Z - The FCTIDZ and FCTIWZ instructions, taking an f32 or f64
+ /// operand, producing an f64 value containing the integer representation
+ /// of that FP value.
+ FCTIDZ, FCTIWZ,
};
}