[Beignet] [PATCH 2/2] gbe: fix uitofp instruction issue.

[xionghu.luo at intel.com]

From: Meng Mengmeng <mengmeng.meng at intel.com>

llvm 3.7 may generate cast instructions "%13 = uitofp i1 %12 to float",
while the dst type is float or double , should call the coresponding
newXXXimmediate function.
---
 backend/src/llvm/llvm_gen_backend.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/backend/src/llvm/llvm_gen_backend.cpp b/backend/src/llvm/llvm_gen_backend.cpp
index 7299d53..717e3f3 100644
--- a/backend/src/llvm/llvm_gen_backend.cpp
+++ b/backend/src/llvm/llvm_gen_backend.cpp
@@ -3144,11 +3144,21 @@ namespace gbe
         // We use a select (0,1) not a convert when the destination is a boolean
         if (srcType == ir::TYPE_BOOL) {
           const ir::RegisterFamily family = getFamily(dstType);
-          const ir::ImmediateIndex zero = ctx.newIntegerImmediate(0, dstType);
+          ir::ImmediateIndex zero;
+          if(dstType == ir::TYPE_FLOAT)
+            zero = ctx.newFloatImmediate(0);
+          else if(dstType == ir::TYPE_DOUBLE)
+            zero = ctx.newDoubleImmediate(0);
+	  else
+            zero = ctx.newIntegerImmediate(0, dstType);
           ir::ImmediateIndex one;
           if (I.getOpcode() == Instruction::SExt
               && (dstType == ir::TYPE_S8 || dstType == ir::TYPE_S16 || dstType == ir::TYPE_S32 || dstType == ir::TYPE_S64))
             one = ctx.newIntegerImmediate(-1, dstType);
+          else if(dstType == ir::TYPE_FLOAT)
+            one = ctx.newFloatImmediate(1);
+          else if(dstType == ir::TYPE_DOUBLE)
+            one = ctx.newDoubleImmediate(1);
           else
             one = ctx.newIntegerImmediate(1, dstType);
           const ir::Register zeroReg = ctx.reg(family);
-- 
1.9.1