AMDGPU: Use MFPropsModifier modifier in SIFoldOperands (#127752)

This doesn't appear to work. I do not get an error in the new PM.

---------

Co-authored-by: Akshat Oke <[email protected]>

Author: arsenm

llvm/lib/Target/AMDGPU/SIFoldOperands.cpp

@@ -2496,6 +2496,8 @@ bool SIFoldOperandsImpl::run(MachineFunction &MF) {
 
 PreservedAnalyses SIFoldOperandsPass::run(MachineFunction &MF,
                                           MachineFunctionAnalysisManager &) {
+  MFPropsModifier _(*this, MF);
+
   bool Changed = SIFoldOperandsImpl().run(MF);
   if (!Changed) {
     return PreservedAnalyses::all();

llvm/test/CodeGen/AMDGPU/si-fold-operands-requires-ssa.mir

@@ -0,0 +1,16 @@
+# RUN: not --crash llc -mtriple=amdgcn -mcpu=gfx900 -run-pass=si-fold-operands -filetype=null %s 2>&1 | FileCheck -check-prefixes=ERR-LEGACY,ERR %s
+# RUN: not --crash llc -mtriple=amdgcn -mcpu=gfx900 -passes=si-fold-operands -filetype=null %s 2>&1 | FileCheck -check-prefixes=ERR-NPM,ERR %s
+
+# ERR-LEGACY: MachineFunctionProperties required by SI Fold Operands pass are not met by function not_ssa.
+# ERR-NPM: MachineFunctionProperties required by SIFoldOperandsPass pass are not met by function not_ssa.
+# ERR-NEXT: Required properties: IsSSA
+# ERR-NEXT: Current properties: NoPHIs
+---
+name:            not_ssa
+body:             |
+  bb.0:
+    liveins: $vgpr0, $vgpr1
+    %0:vgpr_32 = COPY $vgpr0
+    %0:vgpr_32 = COPY $vgpr1
+
+...