Add VSX Scalar loads and stores to the PPC back end

This patch corresponds to review:
http://reviews.llvm.org/D9440

It adds a new register class to the PPC back end to contain single precision
values in VSX registers. Additionally, it adds scalar loads and stores for
VSX registers.

llvm-svn: 236755

1 files changed, 24 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
index b6f10e61079..8280f74c063 100644
--- a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
+++ b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
@@ -132,6 +132,25 @@ static const MCPhysReg VSFRegs[64] = {
   PPC::VF24, PPC::VF25, PPC::VF26, PPC::VF27,
   PPC::VF28, PPC::VF29, PPC::VF30, PPC::VF31
 };
+static const MCPhysReg VSSRegs[64] = {
+  PPC::F0,  PPC::F1,  PPC::F2,  PPC::F3,
+  PPC::F4,  PPC::F5,  PPC::F6,  PPC::F7,
+  PPC::F8,  PPC::F9,  PPC::F10, PPC::F11,
+  PPC::F12, PPC::F13, PPC::F14, PPC::F15,
+  PPC::F16, PPC::F17, PPC::F18, PPC::F19,
+  PPC::F20, PPC::F21, PPC::F22, PPC::F23,
+  PPC::F24, PPC::F25, PPC::F26, PPC::F27,
+  PPC::F28, PPC::F29, PPC::F30, PPC::F31,
+
+  PPC::VF0,  PPC::VF1,  PPC::VF2,  PPC::VF3,
+  PPC::VF4,  PPC::VF5,  PPC::VF6,  PPC::VF7,
+  PPC::VF8,  PPC::VF9,  PPC::VF10, PPC::VF11,
+  PPC::VF12, PPC::VF13, PPC::VF14, PPC::VF15,
+  PPC::VF16, PPC::VF17, PPC::VF18, PPC::VF19,
+  PPC::VF20, PPC::VF21, PPC::VF22, PPC::VF23,
+  PPC::VF24, PPC::VF25, PPC::VF26, PPC::VF27,
+  PPC::VF28, PPC::VF29, PPC::VF30, PPC::VF31
+};
 static unsigned QFRegs[32] = {
   PPC::QF0,  PPC::QF1,  PPC::QF2,  PPC::QF3,
   PPC::QF4,  PPC::QF5,  PPC::QF6,  PPC::QF7,
@@ -577,6 +596,11 @@ public:
     Inst.addOperand(MCOperand::CreateReg(VSFRegs[getVSReg()]));
   }
 
+  void addRegVSSRCOperands(MCInst &Inst, unsigned N) const {
+    assert(N == 1 && "Invalid number of operands!");
+    Inst.addOperand(MCOperand::CreateReg(VSSRegs[getVSReg()]));
+  }
+
   void addRegQFRCOperands(MCInst &Inst, unsigned N) const {
     assert(N == 1 && "Invalid number of operands!");
     Inst.addOperand(MCOperand::CreateReg(QFRegs[getReg()]));