[SystemZ] Rename subregs and add subreg_h32

Use subreg_hNN and subreg_lNN for the high and low NN bits of a register.
List the low registers first, so that subreg_l32 also means the low 32
bits of a 128-bit register.

Floats are stored in the upper 32 bits of a 64-bit register, so they
should use subreg_h32 rather than subreg_l32.

No behavioral change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191659 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp b/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
index da935907ef..f8634a99de 100644
--- a/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
+++ b/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
@@ -839,10 +839,10 @@ SDValue SystemZDAGToDAGISel::getUNDEF64(SDLoc DL) const {
 
 SDValue SystemZDAGToDAGISel::convertTo(SDLoc DL, EVT VT, SDValue N) const {
   if (N.getValueType() == MVT::i32 && VT == MVT::i64)
-    return CurDAG->getTargetInsertSubreg(SystemZ::subreg_32bit,
+    return CurDAG->getTargetInsertSubreg(SystemZ::subreg_l32,
                                          DL, VT, getUNDEF64(DL), N);
   if (N.getValueType() == MVT::i64 && VT == MVT::i32)
-    return CurDAG->getTargetExtractSubreg(SystemZ::subreg_32bit, DL, VT, N);
+    return CurDAG->getTargetExtractSubreg(SystemZ::subreg_l32, DL, VT, N);
   assert(N.getValueType() == VT && "Unexpected value types");
   return N;
 }