[PATCH] D108563: [GlobalISel] Translate @llvm.llround.* -> G_LLROUND

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.
paquette added reviewers: aemerson, arsenm, jroelofs.
Herald added subscribers: hiraditya, rovka.
paquette requested review of this revision.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

Translate it using `IRTranslator::translateSimpleIntrinsic`.


https://reviews.llvm.org/D108563

Files:
  llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll


Index: llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
===================================================================
--- llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
+++ llvm/test/CodeGen/AArch64/GlobalISel/arm64-irtranslator.ll
@@ -2470,3 +2470,16 @@
   %lround = tail call i64 @llvm.lround.i64.f32(float %x)
   ret i64 %lround
 }
+
+declare i64 @llvm.llround.i64.f32(float) nounwind readnone
+define i64 @llround(float %x) {
+  ; CHECK-LABEL: name: llround
+  ; CHECK: bb.1 (%ir-block.0):
+  ; CHECK:   liveins: $s0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY $s0
+  ; CHECK:   [[LLROUND:%[0-9]+]]:_(s64) = G_LLROUND [[COPY]](s32)
+  ; CHECK:   $x0 = COPY [[LLROUND]](s64)
+  ; CHECK:   RET_ReallyLR implicit $x0
+  %lround = tail call i64 @llvm.llround.i64.f32(float %x)
+  ret i64 %lround
+}
Index: llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
===================================================================
--- llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -1765,6 +1765,8 @@
       return TargetOpcode::G_VECREDUCE_UMIN;
     case Intrinsic::lround:
       return TargetOpcode::G_LROUND;
+    case Intrinsic::llround:
+      return TargetOpcode::G_LLROUND;
   }
   return Intrinsic::not_intrinsic;
 }


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