[WebAssembly] Split CFG-sorting into its own pass. NFC.
CFG sorting was already an independent algorithm from block/loop insertion;
this change makes it more convenient to debug.
llvm-svn: 296399
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
index 2fb2327..e32772d 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
@@ -15,6 +15,7 @@
#include "WebAssemblyUtilities.h"
#include "WebAssemblyMachineFunctionInfo.h"
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineLoopInfo.h"
using namespace llvm;
bool WebAssembly::isArgument(const MachineInstr &MI) {
@@ -86,3 +87,11 @@
return false;
}
}
+
+MachineBasicBlock *llvm::LoopBottom(const MachineLoop *Loop) {
+ MachineBasicBlock *Bottom = Loop->getHeader();
+ for (MachineBasicBlock *MBB : Loop->blocks())
+ if (MBB->getNumber() > Bottom->getNumber())
+ Bottom = MBB;
+ return Bottom;
+}