Add direct moves to/from VSR and exploit them for FP/INT conversions
This patch corresponds to review:
http://reviews.llvm.org/D8928
It adds direct move instructions to/from VSX registers to GPR's. These are
exploited for FP <-> INT conversions.
llvm-svn: 234682
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index 695fc3f..7e2ebd4 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -119,6 +119,15 @@
/// resultant GPR. Bits corresponding to other CR regs are undefined.
MFOCRF,
+ /// Direct move from a VSX register to a GPR
+ MFVSR,
+
+ /// Direct move from a GPR to a VSX register (algebraic)
+ MTVSRA,
+
+ /// Direct move from a GPR to a VSX register (zero)
+ MTVSRZ,
+
// FIXME: Remove these once the ANDI glue bug is fixed:
/// i1 = ANDIo_1_[EQ|GT]_BIT(i32 or i64 x) - Represents the result of the
/// eq or gt bit of CR0 after executing andi. x, 1. This is used to
@@ -645,6 +654,10 @@
void LowerFP_TO_INTForReuse(SDValue Op, ReuseLoadInfo &RLI,
SelectionDAG &DAG, SDLoc dl) const;
+ SDValue LowerFP_TO_INTDirectMove(SDValue Op, SelectionDAG &DAG,
+ SDLoc dl) const;
+ SDValue LowerINT_TO_FPDirectMove(SDValue Op, SelectionDAG &DAG,
+ SDLoc dl) const;
SDValue getFramePointerFrameIndex(SelectionDAG & DAG) const;
SDValue getReturnAddrFrameIndex(SelectionDAG & DAG) const;