Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.
llvm-svn: 44960
diff --git a/llvm/lib/Target/ARM/ARMInstrVFP.td b/llvm/lib/Target/ARM/ARMInstrVFP.td
index 5b7a403..b3fe2ff 100644
--- a/llvm/lib/Target/ARM/ARMInstrVFP.td
+++ b/llvm/lib/Target/ARM/ARMInstrVFP.td
@@ -251,12 +251,14 @@
// FP <-> GPR Copies. Int <-> FP Conversions.
//
+let isImplicitDef = 1 in {
def IMPLICIT_DEF_SPR : PseudoInst<(outs SPR:$rD), (ins pred:$p),
"@ IMPLICIT_DEF_SPR $rD",
[(set SPR:$rD, (undef))]>;
def IMPLICIT_DEF_DPR : PseudoInst<(outs DPR:$rD), (ins pred:$p),
"@ IMPLICIT_DEF_DPR $rD",
[(set DPR:$rD, (undef))]>;
+}
def FMRS : ASI<(outs GPR:$dst), (ins SPR:$src),
"fmrs", " $dst, $src",