[X86] Remove unused function createX86PreAMXConfigPass

[kazutakahirata]

The last use was removed by:

commit 496156a
Author: Luo, Yuanke yuanke.luo@intel.com
Date: Tue May 3 18:57:25 2022 +0800

[llvmbot]

@llvm/pr-subscribers-backend-x86

Author: Kazu Hirata (kazutakahirata)

Changes

The last use was removed by:

commit 496156a
Author: Luo, Yuanke <yuanke.luo@intel.com>
Date: Tue May 3 18:57:25 2022 +0800

---

Full diff: https://github.com/llvm/llvm-project/pull/69547.diff

2 Files Affected:

• (modified) llvm/include/llvm/CodeGen/Passes.h (-3)
• (modified) llvm/lib/Target/X86/X86PreAMXConfig.cpp (-4)

diff --git a/llvm/include/llvm/CodeGen/Passes.h b/llvm/include/llvm/CodeGen/Passes.h
index 598c0b838c1b97d..8d14eef949e91b4 100644
--- a/llvm/include/llvm/CodeGen/Passes.h
+++ b/llvm/include/llvm/CodeGen/Passes.h
@@ -584,9 +584,6 @@ namespace llvm {
   /// or split the data to two <128 x i32>.
   FunctionPass *createX86LowerAMXTypePass();
 
-  /// The pass insert tile config intrinsics for AMX fast register allocation.
-  FunctionPass *createX86PreAMXConfigPass();
-
   /// The pass transforms amx intrinsics to scalar operation if the function has
   /// optnone attribute or it is O0.
   FunctionPass *createX86LowerAMXIntrinsicsPass();
diff --git a/llvm/lib/Target/X86/X86PreAMXConfig.cpp b/llvm/lib/Target/X86/X86PreAMXConfig.cpp
index 7872a64061d438c..078c269277cbbe8 100644
--- a/llvm/lib/Target/X86/X86PreAMXConfig.cpp
+++ b/llvm/lib/Target/X86/X86PreAMXConfig.cpp
@@ -409,7 +409,3 @@ char X86PreAMXConfigPass::ID = 0;
 INITIALIZE_PASS_BEGIN(X86PreAMXConfigPass, DEBUG_TYPE, PassName, false, false)
 INITIALIZE_PASS_DEPENDENCY(TargetPassConfig)
 INITIALIZE_PASS_END(X86PreAMXConfigPass, DEBUG_TYPE, PassName, false, false)
-
-FunctionPass *llvm::createX86PreAMXConfigPass() {
-  return new X86PreAMXConfigPass();
-}

[yubingex007-a11y]

wait let me run all the AMX testcases first before merging the pr.

[yubingex007-a11y]

i saw https://reviews.llvm.org/D125075 deleted X86PreAMXConfigPass in O0's PM and let O0 use X86FastPreTileConfigPass to insert ldtilecfg. i think we can safely remove X86PreAMXConfigPass 's related code.

i am WIP on that thing: #69569.
lets merge #69569. instead of current pr.

[kazutakahirata]

i am WIP on that thing: #69569. lets merge #69569. instead of current pr.

Sounds good. Thank you for going the extra mile and removing the whole pass! I'm closing this PR.