R600/SI: SI support for 64bit ConstantFP

Patch by: Niels Ole Salscheider

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186178 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/Target/R600/SIInstrInfo.td b/lib/Target/R600/SIInstrInfo.td
index 655a8b1..067a34b 100644
--- a/lib/Target/R600/SIInstrInfo.td
+++ b/lib/Target/R600/SIInstrInfo.td
@@ -21,11 +21,23 @@ def LO32 : SDNodeXForm<imm, [{
   return CurDAG->getTargetConstant(N->getZExtValue() & 0xffffffff, MVT::i32);
 }]>;
 
+def LO32f : SDNodeXForm<fpimm, [{
+  uint64_t val = N->getValueAPF().bitcastToAPInt().getZExtValue() & 0xffffffff;
+  float *fval = reinterpret_cast<float *>(&val);
+  return CurDAG->getTargetConstantFP(*fval, MVT::f32);
+}]>;
+
 // Transformation function, extract the upper 32bit of a 64bit immediate
 def HI32 : SDNodeXForm<imm, [{
   return CurDAG->getTargetConstant(N->getZExtValue() >> 32, MVT::i32);
 }]>;
 
+def HI32f : SDNodeXForm<fpimm, [{
+  uint64_t val = N->getValueAPF().bitcastToAPInt().getZExtValue() >> 32;
+  float *fval = reinterpret_cast<float *>(&val);
+  return CurDAG->getTargetConstantFP(*fval, MVT::f32);
+}]>;
+
 def IMM8bitDWORD : ImmLeaf <
   i32, [{
     return (Imm & ~0x3FC) == 0;