[llvm-commits] [llvm] r160791 - in /llvm/trunk: docs/LangRef.html include/llvm/Intrinsics.td lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

[Dan Gohman]

Author: djg
Date: Thu Jul 26 12:43:27 2012
New Revision: 160791

URL: http://llvm.org/viewvc/llvm-project?rev=160791&view=rev
Log:
Add a floor intrinsic.

Modified:
    llvm/trunk/docs/LangRef.html
    llvm/trunk/include/llvm/Intrinsics.td
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

Modified: llvm/trunk/docs/LangRef.html
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LangRef.html?rev=160791&r1=160790&r2=160791&view=diff
==============================================================================
--- llvm/trunk/docs/LangRef.html (original)
+++ llvm/trunk/docs/LangRef.html Thu Jul 26 12:43:27 2012
@@ -258,6 +258,7 @@
           <li><a href="#int_log">'<tt>llvm.log.*</tt>' Intrinsic</a></li>
           <li><a href="#int_fma">'<tt>llvm.fma.*</tt>' Intrinsic</a></li>
           <li><a href="#int_fabs">'<tt>llvm.fabs.*</tt>' Intrinsic</a></li>
+          <li><a href="#int_floor">'<tt>llvm.floor.*</tt>' Intrinsic</a></li>
         </ol>
       </li>
       <li><a href="#int_manip">Bit Manipulation Intrinsics</a>
@@ -7544,6 +7545,40 @@
 
 </div>
 
+<!-- _______________________________________________________________________ -->
+<h4>
+  <a name="int_floor">'<tt>llvm.floor.*</tt>' Intrinsic</a>
+</h4>
+
+<div>
+
+<h5>Syntax:</h5>
+<p>This is an overloaded intrinsic. You can use <tt>llvm.floor</tt> on any
+   floating point or vector of floating point type. Not all targets support all
+   types however.</p>
+
+<pre>
+  declare float     @llvm.floor.f32(float  %Val)
+  declare double    @llvm.floor.f64(double %Val)
+  declare x86_fp80  @llvm.floor.f80(x86_fp80  %Val)
+  declare fp128     @llvm.floor.f128(fp128 %Val)
+  declare ppc_fp128 @llvm.floor.ppcf128(ppc_fp128  %Val)
+</pre>
+
+<h5>Overview:</h5>
+<p>The '<tt>llvm.floor.*</tt>' intrinsics return the floor of
+   the operand.</p>
+
+<h5>Arguments:</h5>
+<p>The argument and return value are floating point numbers of the same
+   type.</p>
+
+<h5>Semantics:</h5>
+<p>This function returns the same values as the libm <tt>floor</tt> functions
+   would, and handles error conditions in the same way.</p>
+
+</div>
+
 </div>
 
 <!-- ======================================================================= -->

Modified: llvm/trunk/include/llvm/Intrinsics.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Intrinsics.td?rev=160791&r1=160790&r2=160791&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Intrinsics.td (original)
+++ llvm/trunk/include/llvm/Intrinsics.td Thu Jul 26 12:43:27 2012
@@ -261,6 +261,7 @@
   def int_exp  : Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>]>;
   def int_exp2 : Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>]>;
   def int_fabs : Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>]>;
+  def int_floor : Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>]>;
 }
 
 let Properties = [IntrNoMem] in {

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=160791&r1=160790&r2=160791&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Thu Jul 26 12:43:27 2012
@@ -4929,6 +4929,11 @@
                              getValue(I.getArgOperand(0)).getValueType(),
                              getValue(I.getArgOperand(0))));
     return 0;
+  case Intrinsic::floor:
+    setValue(&I, DAG.getNode(ISD::FFLOOR, dl,
+                             getValue(I.getArgOperand(0)).getValueType(),
+                             getValue(I.getArgOperand(0))));
+    return 0;
   case Intrinsic::fma:
     setValue(&I, DAG.getNode(ISD::FMA, dl,
                              getValue(I.getArgOperand(0)).getValueType(),