[llvm-branch-commits] [llvm] AMDGPU/GlobalISel: RBSelect (PR #112863)

[Matt Arsenault via llvm-branch-commits]

================
@@ -69,3 +72,38 @@ AMDGPU::getBaseWithConstantOffset(MachineRegisterInfo &MRI, Register Reg,
 
   return std::pair(Reg, 0);
 }
+
+IntrinsicLaneMaskAnalyzer::IntrinsicLaneMaskAnalyzer(MachineFunction &MF)
+    : MRI(MF.getRegInfo()) {
+  initLaneMaskIntrinsics(MF);
+}
+
+bool IntrinsicLaneMaskAnalyzer::isS32S64LaneMask(Register Reg) {
+  return S32S64LaneMask.contains(Reg);
+}
+
+void IntrinsicLaneMaskAnalyzer::initLaneMaskIntrinsics(MachineFunction &MF) {
+  for (auto &MBB : MF) {
+    for (auto &MI : MBB) {
+      if (MI.getOpcode() == AMDGPU::G_INTRINSIC &&
+          MI.getOperand(MI.getNumExplicitDefs()).getIntrinsicID() ==
+              Intrinsic::amdgcn_if_break) {
----------------
arsenm wrote:

`cast<GIntrinsic>(MI).getIntrinsicID() == Intrinsic::amdgcn_if_break`


https://github.com/llvm/llvm-project/pull/112863