[ARM][MVE] VFMA and VFMS validForTailPredication

sparker-arm · sparker-arm · commit a31405006504 · 2020-03-10T14:58:29.000Z
Add four instructions to the whitelist. Differential Revision: https://reviews.llvm.org/D75902
diff --git a/llvm/lib/Target/ARM/ARMInstrMVE.td b/llvm/lib/Target/ARM/ARMInstrMVE.td
@@ -3417,6 +3417,7 @@ class MVE_VADDSUBFMA_fp<string iname, string suffix, bit size, bit bit_4,
   let Inst{8} = bit_8;
   let Inst{7} = Qn{3};
   let Inst{4} = bit_4;
+  let validForTailPredication = 1;
 }
 
 def MVE_VFMAf32 : MVE_VADDSUBFMA_fp<"vfma", "f32", 0b0, 0b1, 0b0, 0b0,
diff --git a/llvm/unittests/Target/ARM/MachineInstrTest.cpp b/llvm/unittests/Target/ARM/MachineInstrTest.cpp
@@ -145,6 +145,10 @@ TEST(MachineInstrValidTailPredication, IsCorrect) {
     case MVE_VFMA_qr_Sf32:
     case MVE_VFMA_qr_f16:
     case MVE_VFMA_qr_f32:
+    case MVE_VFMAf16:
+    case MVE_VFMAf32:
+    case MVE_VFMSf16:
+    case MVE_VFMSf32:
     case MVE_VMAXAs16:
     case MVE_VMAXAs32:
     case MVE_VMAXAs8:

Original file line number	Diff line number	Diff line change
`@@ -3417,6 +3417,7 @@ class MVE_VADDSUBFMA_fp<string iname, string suffix, bit size, bit bit_4,`
`3417`	`3417`	`let Inst{8} = bit_8;`
`3418`	`3418`	`let Inst{7} = Qn{3};`
`3419`	`3419`	`let Inst{4} = bit_4;`
	`3420`	`+ let validForTailPredication = 1;`
`3420`	`3421`	`}`
`3421`	`3422`
`3422`	`3423`	`def MVE_VFMAf32 : MVE_VADDSUBFMA_fp<"vfma", "f32", 0b0, 0b1, 0b0, 0b0,`