[llvm] [X86] Add start/end debug messages for the X86CompressEVEXPass and X86PadShortFunctionPass (PR #144056)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-x86

Author: Simon Pilgrim (RKSimon)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/144056.diff


2 Files Affected:

- (modified) llvm/lib/Target/X86/X86CompressEVEX.cpp (+2-1) 
- (modified) llvm/lib/Target/X86/X86PadShortFunction.cpp (+2-1) 


``````````diff
diff --git a/llvm/lib/Target/X86/X86CompressEVEX.cpp b/llvm/lib/Target/X86/X86CompressEVEX.cpp
index fe593aa307df5..4ea30de78402f 100644
--- a/llvm/lib/Target/X86/X86CompressEVEX.cpp
+++ b/llvm/lib/Target/X86/X86CompressEVEX.cpp
@@ -300,6 +300,7 @@ static bool CompressEVEXImpl(MachineInstr &MI, const X86Subtarget &ST) {
 }
 
 bool CompressEVEXPass::runOnMachineFunction(MachineFunction &MF) {
+  LLVM_DEBUG(dbgs() << "Start X86CompressEVEXPass\n";);
 #ifndef NDEBUG
   // Make sure the tables are sorted.
   static std::atomic<bool> TableChecked(false);
@@ -320,7 +321,7 @@ bool CompressEVEXPass::runOnMachineFunction(MachineFunction &MF) {
     for (MachineInstr &MI : MBB)
       Changed |= CompressEVEXImpl(MI, ST);
   }
-
+  LLVM_DEBUG(dbgs() << "End X86CompressEVEXPass\n";);
   return Changed;
 }
 
diff --git a/llvm/lib/Target/X86/X86PadShortFunction.cpp b/llvm/lib/Target/X86/X86PadShortFunction.cpp
index 170ca2a932502..049384eefa188 100644
--- a/llvm/lib/Target/X86/X86PadShortFunction.cpp
+++ b/llvm/lib/Target/X86/X86PadShortFunction.cpp
@@ -100,6 +100,7 @@ FunctionPass *llvm::createX86PadShortFunctions() {
 /// runOnMachineFunction - Loop over all of the basic blocks, inserting
 /// NOOP instructions before early exits.
 bool PadShortFunc::runOnMachineFunction(MachineFunction &MF) {
+  LLVM_DEBUG(dbgs() << "Start X86PadShortFunctionPass\n";);
   if (skipFunction(MF.getFunction()))
     return false;
 
@@ -149,7 +150,7 @@ bool PadShortFunc::runOnMachineFunction(MachineFunction &MF) {
       MadeChange = true;
     }
   }
-
+  LLVM_DEBUG(dbgs() << "End X86PadShortFunctionPass\n";);
   return MadeChange;
 }
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/144056