[PATCH][Interpreter] Add missing FP intrinsic lowering.

Summary:
This extends the work done in [1], adding missing intrinsic lowering for floor, trunc, round and copysign.

[1] http://comments.gmane.org/gmane.comp.compilers.llvm.cvs/199372

Test Plan: Extended `test/ExecutionEngine/Interpreter/intrinsics.ll` to test the additional missing intrinsics. All tests pass.

Reviewers: dexonsmith

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5120

llvm-svn: 216827

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/IntrinsicLowering.cpp b/llvm/lib/CodeGen/IntrinsicLowering.cpp
index 4ec3bae6f67..2c95e9e7d0d 100644
--- a/llvm/lib/CodeGen/IntrinsicLowering.cpp
+++ b/llvm/lib/CodeGen/IntrinsicLowering.cpp
@@ -536,10 +536,26 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
     ReplaceFPIntrinsicWithCall(CI, "cosf", "cos", "cosl");
     break;
   }
+  case Intrinsic::floor: {
+    ReplaceFPIntrinsicWithCall(CI, "floorf", "floor", "floorl");
+    break;
+  }
   case Intrinsic::ceil: {
     ReplaceFPIntrinsicWithCall(CI, "ceilf", "ceil", "ceill");
     break;
   }
+  case Intrinsic::trunc: {
+    ReplaceFPIntrinsicWithCall(CI, "truncf", "trunc", "truncl");
+    break;
+  }
+  case Intrinsic::round: {
+    ReplaceFPIntrinsicWithCall(CI, "roundf", "round", "roundl");
+    break;
+  }
+  case Intrinsic::copysign: {
+    ReplaceFPIntrinsicWithCall(CI, "copysignf", "copysign", "copysignl");
+    break;
+  }
   case Intrinsic::flt_rounds:
      // Lower to "round to the nearest"
      if (!CI->getType()->isVoidTy())