[llvm-commits] [llvm] r168107 - in /llvm/trunk: lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp lib/Target/ARM/ARMISelLowering.cpp test/CodeGen/ARM/neon_fpconv.ll

[Eli Friedman]

Author: efriedma
Date: Thu Nov 15 16:44:27 2012
New Revision: 168107

URL: http://llvm.org/viewvc/llvm-project?rev=168107&view=rev
Log:
Mark FP_ROUND for converting NEON v2f64 to v2f32 as expand. Add a missing
case to vector legalization so this actually works.

Patch by Pete Couperus.  Fixes PR12540.


Added:
    llvm/trunk/test/CodeGen/ARM/neon_fpconv.ll
Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp?rev=168107&r1=168106&r2=168107&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp Thu Nov 15 16:44:27 2012
@@ -221,6 +221,7 @@
   case ISD::FRINT:
   case ISD::FNEARBYINT:
   case ISD::FFLOOR:
+  case ISD::FP_ROUND:
   case ISD::FMA:
   case ISD::SIGN_EXTEND_INREG:
     QueryType = Node->getValueType(0);

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=168107&r1=168106&r2=168107&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Thu Nov 15 16:44:27 2012
@@ -544,6 +544,8 @@
     setOperationAction(ISD::FP_TO_UINT, MVT::v4i16, Custom);
     setOperationAction(ISD::FP_TO_SINT, MVT::v4i16, Custom);
 
+    setOperationAction(ISD::FP_ROUND,   MVT::v2f32, Expand);
+
     setTargetDAGCombine(ISD::INTRINSIC_VOID);
     setTargetDAGCombine(ISD::INTRINSIC_W_CHAIN);
     setTargetDAGCombine(ISD::INTRINSIC_WO_CHAIN);

Added: llvm/trunk/test/CodeGen/ARM/neon_fpconv.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/neon_fpconv.ll?rev=168107&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/neon_fpconv.ll (added)
+++ llvm/trunk/test/CodeGen/ARM/neon_fpconv.ll Thu Nov 15 16:44:27 2012
@@ -0,0 +1,9 @@
+; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s
+
+; PR12540: ARM backend lowering of FP_ROUND v2f64 to v2f32.
+define <2 x float> @vtrunc(<2 x double> %a) {
+; CHECK: vcvt.f32.f64 [[S0:s[0-9]+]], [[D0:d[0-9]+]]
+; CHECK: vcvt.f32.f64 [[S1:s[0-9]+]], [[D1:d[0-9]+]]
+  %vt = fptrunc <2 x double> %a to <2 x float>
+  ret <2 x float> %vt
+}