[llvm] r198149 - [SparcV9] For codegen generated library calls that return float, set inreg flag manually in LowerCall().

[Venkatraman Govindaraju]

Author: venkatra
Date: Sat Dec 28 22:27:21 2013
New Revision: 198149

URL: http://llvm.org/viewvc/llvm-project?rev=198149&view=rev
Log:
[SparcV9] For codegen generated library calls that return float, set inreg flag manually in LowerCall().
 This makes the sparc backend to generate Sparc64 ABI compliant code.

Modified:
    llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
    llvm/trunk/test/CodeGen/SPARC/64abi.ll

Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp?rev=198149&r1=198148&r2=198149&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp Sat Dec 28 22:27:21 2013
@@ -1252,6 +1252,12 @@ SparcTargetLowering::LowerCall_64(Target
   SmallVector<CCValAssign, 16> RVLocs;
   CCState RVInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
                  DAG.getTarget(), RVLocs, *DAG.getContext());
+
+  // Set inreg flag manually for codegen generated library calls that
+  // return float.
+  if (CLI.Ins.size() == 1 && CLI.Ins[0].VT == MVT::f32 && CLI.CS == 0)
+    CLI.Ins[0].Flags.setInReg();
+
   RVInfo.AnalyzeCallResult(CLI.Ins, CC_Sparc64);
 
   // Copy all of the result registers out of their specified physreg.

Modified: llvm/trunk/test/CodeGen/SPARC/64abi.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SPARC/64abi.ll?rev=198149&r1=198148&r2=198149&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/SPARC/64abi.ll (original)
+++ llvm/trunk/test/CodeGen/SPARC/64abi.ll Sat Dec 28 22:27:21 2013
@@ -440,4 +440,25 @@ entry:
   ret i64 %0
 }
 
+; CHECK-LABEL: test_call_libfunc
+; CHECK:       st %f1, [%fp+[[Offset0:[0-9]+]]]
+; CHECK:       fmovs %f3, %f1
+; CHECK:       call cosf
+; CHECK:       st %f0, [%fp+[[Offset1:[0-9]+]]]
+; CHECK:       ld [%fp+[[Offset0]]], %f1
+; CHECK:       call sinf
+; CHECK:       ld [%fp+[[Offset1]]], %f1
+; CHECK:       fmuls %f1, %f0, %f0
+
+define inreg float @test_call_libfunc(float %arg0, float %arg1) {
+entry:
+  %0 = tail call inreg float @cosf(float %arg1)
+  %1 = tail call inreg float @sinf(float %arg0)
+  %2 = fmul float %0, %1
+  ret float %2
+}
+
+declare inreg float @cosf(float %arg) readnone nounwind
+declare inreg float @sinf(float %arg) readnone nounwind
+