[llvm] Skip debug machine instructions in AMDGPU SIWholeQuadMode pass. (PR #134518)

[via llvm-commits]

https://github.com/kpyzhov created https://github.com/llvm/llvm-project/pull/134518

None

>From 8643b31583b1391fb643b99e068390cb64375fdc Mon Sep 17 00:00:00 2001
From: Konstantin <konstantin.pyzhov at amd.com>
Date: Sat, 5 Apr 2025 22:40:12 -0400
Subject: [PATCH] Skip debug machine instructions in AMDGPU SIWholeQuadMode
 pass.

---
 llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp b/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
index 57ae7d63218dd..8ae134a7b8091 100644
--- a/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
+++ b/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
@@ -1300,6 +1300,12 @@ void SIWholeQuadMode::processBlock(MachineBasicBlock &MBB, BlockInfo &BI,
 
   for (unsigned Idx = 0;; ++Idx) {
     MachineBasicBlock::iterator Next = II;
+
+    if (II != IE && II->isDebugInstr()) {
+      II = ++Next;
+      continue;
+    }
+
     char Needs = StateExact | StateWQM; // Strict mode is disabled by default.
     char OutNeeds = 0;