patch-r262261-llvm-r198149-sparc.diff revision 269012 
1Pull in r198149 from upstream llvm trunk (by Venkatraman Govindaraju):
2
3  [SparcV9] For codegen generated library calls that return float, set inreg flag manually in LowerCall().
4  This makes the sparc backend to generate Sparc64 ABI compliant code.
5
6Introduced here: http://svnweb.freebsd.org/changeset/base/262261
7
8Index: lib/Target/Sparc/SparcISelLowering.cpp
9===================================================================
10--- lib/Target/Sparc/SparcISelLowering.cpp
11+++ lib/Target/Sparc/SparcISelLowering.cpp
12@@ -1252,6 +1252,12 @@ SparcTargetLowering::LowerCall_64(TargetLowering::
13   SmallVector<CCValAssign, 16> RVLocs;
14   CCState RVInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
15                  DAG.getTarget(), RVLocs, *DAG.getContext());
16+
17+  // Set inreg flag manually for codegen generated library calls that
18+  // return float.
19+  if (CLI.Ins.size() == 1 && CLI.Ins[0].VT == MVT::f32 && CLI.CS == 0)
20+    CLI.Ins[0].Flags.setInReg();
21+
22   RVInfo.AnalyzeCallResult(CLI.Ins, CC_Sparc64);
23 
24   // Copy all of the result registers out of their specified physreg.
25Index: test/CodeGen/SPARC/64abi.ll
26===================================================================
27--- test/CodeGen/SPARC/64abi.ll
28+++ test/CodeGen/SPARC/64abi.ll
29@@ -440,4 +440,25 @@ entry:
30   ret i64 %0
31 }
32 
33+; CHECK-LABEL: test_call_libfunc
34+; CHECK:       st %f1, [%fp+[[Offset0:[0-9]+]]]
35+; CHECK:       fmovs %f3, %f1
36+; CHECK:       call cosf
37+; CHECK:       st %f0, [%fp+[[Offset1:[0-9]+]]]
38+; CHECK:       ld [%fp+[[Offset0]]], %f1
39+; CHECK:       call sinf
40+; CHECK:       ld [%fp+[[Offset1]]], %f1
41+; CHECK:       fmuls %f1, %f0, %f0
42 
43+define inreg float @test_call_libfunc(float %arg0, float %arg1) {
44+entry:
45+  %0 = tail call inreg float @cosf(float %arg1)
46+  %1 = tail call inreg float @sinf(float %arg0)
47+  %2 = fmul float %0, %1
48+  ret float %2
49+}
50+
51+declare inreg float @cosf(float %arg) readnone nounwind
52+declare inreg float @sinf(float %arg) readnone nounwind
53+
54+
55