commit 4a4fdf3476473021f62d5b02e8ee8802f5b25e5a
author Owen Anderson <resistor@mac.com> Thu Dec 08 19:32:14 2011 +0000
committer Owen Anderson <resistor@mac.com> Thu Dec 08 19:32:14 2011 +0000
tree 01db61d10fc4e3df3fd703354b68542dfa955970
parent 40e285554773c51f6dd6eb8d076256e557fab9c3

Teach SelectionDAG to match more calls to libm functions onto existing SDNodes.  Mark these nodes as illegal by default, unless the target declares otherwise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146171 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index ac24ce5..b7f5668 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5559,6 +5559,53 @@
                                    Tmp.getValueType(), Tmp));
           return;
         }
+      } else if (Name == "floor" || Name == "floorf" || Name == "floorl") {
+        if (I.getNumArgOperands() == 1 && // Basic sanity checks.
+            I.getArgOperand(0)->getType()->isFloatingPointTy() &&
+            I.getType() == I.getArgOperand(0)->getType()) {
+          SDValue Tmp = getValue(I.getArgOperand(0));
+          setValue(&I, DAG.getNode(ISD::FFLOOR, getCurDebugLoc(),
+                                   Tmp.getValueType(), Tmp));
+          return;
+        }
+      } else if (Name == "nearbyint" || Name == "nearbyintf" ||
+                 Name == "nearbyintl") {
+        if (I.getNumArgOperands() == 1 && // Basic sanity checks.
+            I.getArgOperand(0)->getType()->isFloatingPointTy() &&
+            I.getType() == I.getArgOperand(0)->getType()) {
+          SDValue Tmp = getValue(I.getArgOperand(0));
+          setValue(&I, DAG.getNode(ISD::FNEARBYINT, getCurDebugLoc(),
+                                   Tmp.getValueType(), Tmp));
+          return;
+        }
+      } else if (Name == "ceil" || Name == "ceilf" || Name == "ceill") {
+        if (I.getNumArgOperands() == 1 && // Basic sanity checks.
+            I.getArgOperand(0)->getType()->isFloatingPointTy() &&
+            I.getType() == I.getArgOperand(0)->getType()) {
+          SDValue Tmp = getValue(I.getArgOperand(0));
+          setValue(&I, DAG.getNode(ISD::FCEIL, getCurDebugLoc(),
+                                   Tmp.getValueType(), Tmp));
+          return;
+        }
+      } else if (Name == "rint" || Name == "rintf" || Name == "rintl") {
+        if (I.getNumArgOperands() == 1 && // Basic sanity checks.
+            I.getArgOperand(0)->getType()->isFloatingPointTy() &&
+            I.getType() == I.getArgOperand(0)->getType()) {
+          SDValue Tmp = getValue(I.getArgOperand(0));
+          setValue(&I, DAG.getNode(ISD::FRINT, getCurDebugLoc(),
+                                   Tmp.getValueType(), Tmp));
+          return;
+        }
+      } else if (Name == "trunc" || Name == "truncf" || Name == "truncl") {
+        if (I.getNumArgOperands() == 1 && // Basic sanity checks.
+            I.getArgOperand(0)->getType()->isFloatingPointTy() &&
+            I.getType() == I.getArgOperand(0)->getType()) {
+          SDValue Tmp = getValue(I.getArgOperand(0));
+          setValue(&I, DAG.getNode(ISD::FTRUNC, getCurDebugLoc(),
+                                   Tmp.getValueType(), Tmp));
+          return;
+        }
+
       } else if (Name == "memcmp") {
         if (visitMemCmpCall(I))
           return;