[llvm] [AMDGPU][GISel] Add RegBankLegalize support for G_SI_CALL (PR #165747)

[Petar Avramovic via llvm-commits]

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@@ -80,6 +80,23 @@ bool RegBankLegalizeHelper::findRuleAndApplyMapping(MachineInstr &MI) {
 bool RegBankLegalizeHelper::executeInWaterfallLoop(
     MachineIRBuilder &B, iterator_range<MachineBasicBlock::iterator> Range,
     SmallSet<Register, 4> &SGPROperandRegs) {
+
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petar-avramovic wrote:

Again don't see the point of special casing here, make Range on SgprP0_WF case (maybe rename to SgprP0Call_WF to indicate it is not "standard _WF") and make sure it gets to executeInWaterfallLoop

https://github.com/llvm/llvm-project/pull/165747