[llvm] [GlobalIsel] Import vscale (PR #88240)

[Matt Arsenault via llvm-commits]

Thorsten =?utf-8?q?Schütt?= <schuett at gmail.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/88240 at github.com>


================
@@ -2550,6 +2550,15 @@ bool IRTranslator::translateKnownIntrinsic(const CallInst &CI, Intrinsic::ID ID,
     MIRBuilder.buildInstr(TargetOpcode::G_RESET_FPMODE, {}, {});
     return true;
   }
+  case Intrinsic::vscale: {
+    LLT DstTy = getLLTForType(*CI.getType(), *DL);
+    auto IntN = IntegerType::get(MF->getFunction().getContext(),
+                                 DstTy.getScalarSizeInBits());
+    ConstantInt *CInt = ConstantInt::get(IntN, 1);
+    MIRBuilder.buildInstr(TargetOpcode::G_VSCALE, {getOrCreateVReg(CI)}, {})
+        .addCImm(CInt);
----------------
arsenm wrote:

Move this into a buildVScale in the MIRBuilder? 

https://github.com/llvm/llvm-project/pull/88240