[llvm-commits] [llvm] r146299 - in /llvm/trunk: lib/Target/ARM/ARMISelLowering.cpp test/CodeGen/ARM/vmov.ll

[Eli Friedman]

Author: efriedma
Date: Fri Dec  9 17:54:42 2011
New Revision: 146299

URL: http://llvm.org/viewvc/llvm-project?rev=146299&view=rev
Log:
Splats can contain undef's; make sure to handle them correctly.  PR11526.


Modified:
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
    llvm/trunk/test/CodeGen/ARM/vmov.ll

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=146299&r1=146298&r2=146299&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Fri Dec  9 17:54:42 2011
@@ -3984,8 +3984,7 @@
 
       // Use vmov.f32 to materialize other v2f32 and v4f32 splats.
       if (VT == MVT::v2f32 || VT == MVT::v4f32) {
-        ConstantFPSDNode *C = cast<ConstantFPSDNode>(Op.getOperand(0));
-        int ImmVal = ARM_AM::getFP32Imm(C->getValueAPF());
+        int ImmVal = ARM_AM::getFP32Imm(SplatBits);
         if (ImmVal != -1) {
           SDValue Val = DAG.getTargetConstant(ImmVal, MVT::i32);
           return DAG.getNode(ARMISD::VMOVFPIMM, dl, VT, Val);

Modified: llvm/trunk/test/CodeGen/ARM/vmov.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/vmov.ll?rev=146299&r1=146298&r2=146299&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/vmov.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/vmov.ll Fri Dec  9 17:54:42 2011
@@ -371,3 +371,13 @@
   store <4 x float> <float 3.100000e+01, float 3.100000e+01, float 3.100000e+01, float 3.100000e+01>, <4 x float>* %p, align 4
   ret void
 }
+
+define void @v_mov_v4f32_undef(<4 x float> * nocapture %p) nounwind {
+entry:
+;CHECK: v_mov_v4f32_undef:
+;CHECK: vmov.f32 q{{.*}}, #1.000000e+00
+  %a = load <4 x float> *%p
+  %b = fadd <4 x float> %a, <float undef, float 1.0, float 1.0, float 1.0>
+  store <4 x float> %b, <4 x float> *%p
+  ret void
+}