[llvm] r270198 - [Sparc] Implement getRegisterByName.

[Chris Dewhurst via llvm-commits]

Author: lerochris
Date: Fri May 20 05:21:01 2016
New Revision: 270198

URL: http://llvm.org/viewvc/llvm-project?rev=270198&view=rev
Log:
[Sparc] Implement getRegisterByName.

Allows Sparc registers to be specifically referred to in inline assembly.

Modified:
    llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
    llvm/trunk/lib/Target/Sparc/SparcISelLowering.h

Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp?rev=270198&r1=270197&r2=270198&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp Fri May 20 05:21:01 2016
@@ -1027,6 +1027,27 @@ SparcTargetLowering::LowerCall_32(Target
   return Chain;
 }
 
+// FIXME? Maybe this could be a TableGen attribute on some registers and
+// this table could be generated automatically from RegInfo.
+unsigned SparcTargetLowering::getRegisterByName(const char* RegName, EVT VT,
+                                               SelectionDAG &DAG) const {
+  unsigned Reg = StringSwitch<unsigned>(RegName)
+    .Case("i0", SP::I0).Case("i1", SP::I1).Case("i2", SP::I2).Case("i3", SP::I3)
+    .Case("i4", SP::I4).Case("i5", SP::I5).Case("i6", SP::I6).Case("i7", SP::I7)
+    .Case("o0", SP::O0).Case("o1", SP::O1).Case("o2", SP::O2).Case("o3", SP::O3)
+    .Case("o4", SP::O4).Case("o5", SP::O5).Case("o6", SP::O6).Case("o7", SP::O7)
+    .Case("l0", SP::L0).Case("l1", SP::L1).Case("l2", SP::L2).Case("l3", SP::L3)
+    .Case("l4", SP::L4).Case("l5", SP::L5).Case("l6", SP::L6).Case("l7", SP::L7)
+    .Case("g0", SP::G0).Case("g1", SP::G1).Case("g2", SP::G2).Case("g3", SP::G3)
+    .Case("g4", SP::G4).Case("g5", SP::G5).Case("g6", SP::G6).Case("g7", SP::G7)
+    .Default(0);
+
+  if (Reg)
+    return Reg;
+
+  report_fatal_error("Invalid register name global variable");
+}
+
 // This functions returns true if CalleeName is a ABI function that returns
 // a long double (fp128).
 static bool isFP128ABICall(const char *CalleeName)

Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.h?rev=270198&r1=270197&r2=270198&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.h (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.h Fri May 20 05:21:01 2016
@@ -102,6 +102,9 @@ namespace llvm {
       return MVT::i32;
     }
 
+    unsigned getRegisterByName(const char* RegName, EVT VT,
+                               SelectionDAG &DAG) const override;
+
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
     unsigned