[AMDGPU] Fix printing hasInitWholeWave in mir (#123232)

Author: rampitec

llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.cpp

@@ -715,7 +715,7 @@ yaml::SIMachineFunctionInfo::SIMachineFunctionInfo(
       ArgInfo(convertArgumentInfo(MFI.getArgInfo(), TRI)),
       PSInputAddr(MFI.getPSInputAddr()), PSInputEnable(MFI.getPSInputEnable()),
       MaxMemoryClusterDWords(MFI.getMaxMemoryClusterDWords()),
-      Mode(MFI.getMode()) {
+      Mode(MFI.getMode()), HasInitWholeWave(MFI.hasInitWholeWave()) {
   for (Register Reg : MFI.getSGPRSpillPhysVGPRs())
     SpillPhysVGPRS.push_back(regToString(Reg, TRI));
 

llvm/test/CodeGen/MIR/AMDGPU/init-whole.wave.ll

@@ -0,0 +1,17 @@
+; RUN: llc -global-isel=0 -march=amdgcn -mcpu=gfx1100 -stop-after=finalize-isel < %s | FileCheck --check-prefix=GCN %s
+; RUN: llc -global-isel=1 -march=amdgcn -mcpu=gfx1100 -stop-after=finalize-isel < %s | FileCheck --check-prefix=GCN %s
+
+; GCN-LABEL: name: init_wwm
+; GCN: hasInitWholeWave: true
+define void @init_wwm(ptr addrspace(1) inreg %p) {
+entry:
+  %entry_exec = call i1 @llvm.amdgcn.init.whole.wave()
+  br i1 %entry_exec, label %bb.1, label %bb.2
+
+bb.1:
+  store i32 1, ptr addrspace(1) %p
+  br label %bb.2
+
+bb.2:
+  ret void
+}