Match (fneg (fma) to vfnma. rdar://10139676

[oota-llvm.git] / lib / Target / ARM / ARMInstrVFP.td

diff --git a/lib/Target/ARM/ARMInstrVFP.td b/lib/Target/ARM/ARMInstrVFP.td
index a9ad4fa4ec48362aa3a44dbeb58c052230e18c24..1b0d58784ddffe7bb08f56337ba615d6d6e1caf6 100644 (file)
--- a/lib/Target/ARM/ARMInstrVFP.td
+++ b/lib/Target/ARM/ARMInstrVFP.td
@@ -1140,6 +1140,14 @@ def : Pat<(fsub_mlx (fneg (fmul_su SPR:$a, SPR:$b)), SPR:$dstin),
           (VFNMAS SPR:$dstin, SPR:$a, SPR:$b)>,
           Requires<[HasVFP4,DontUseNEONForFP,FPContractions]>;
 
+// Match @llvm.fma.* intrinsics
+def : Pat<(fneg (fma (f64 DPR:$Ddin), (f64 DPR:$Dn), (f64 DPR:$Dm))),
+          (VFNMAD DPR:$Ddin, DPR:$Dn, DPR:$Dm)>,
+      Requires<[HasVFP4]>;
+def : Pat<(fneg (fma (f32 SPR:$Sdin), (f32 SPR:$Sn), (f32 SPR:$Sm))),
+          (VFNMAS SPR:$Sdin, SPR:$Sn, SPR:$Sm)>,
+      Requires<[HasVFP4]>;
+
 def VFNMSD : ADbI<0b11101, 0b01, 0, 0,
                   (outs DPR:$Dd), (ins DPR:$Ddin, DPR:$Dn, DPR:$Dm),
                   IIC_fpFMAC64, "vfnms", ".f64\t$Dd, $Dn, $Dm",