[X86][AMX] remove related code of X86PreAMXConfigPass (#69569)

In https://reviews.llvm.org/D125075, we switched to use FastPreTileConfig in O0 and abandoned X86PreAMXConfigPass. we can remove related code of X86PreAMXConfigPass safely.
llvm · Oct 20, 2023 · f2517cb · f2517cb
1 parent f8325f1
commit f2517cb
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diff --git a/clang/docs/tools/clang-formatted-files.txt b/clang/docs/tools/clang-formatted-files.txt
@@ -6813,7 +6813,6 @@ llvm/lib/Target/X86/X86LoadValueInjectionRetHardening.cpp
 llvm/lib/Target/X86/X86LowerAMXIntrinsics.cpp
 llvm/lib/Target/X86/X86LowerAMXType.cpp
 llvm/lib/Target/X86/X86LowerTileCopy.cpp
-llvm/lib/Target/X86/X86PreAMXConfig.cpp
 llvm/lib/Target/X86/X86PreTileConfig.cpp
 llvm/lib/Target/X86/X86RegisterBankInfo.h
 llvm/lib/Target/X86/X86ShuffleDecodeConstantPool.cpp

diff --git 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/CMakeLists.txt b/llvm/lib/Target/X86/CMakeLists.txt
@@ -33,7 +33,6 @@ set(sources
   X86DiscriminateMemOps.cpp
   X86LowerTileCopy.cpp
   X86LowerAMXType.cpp
-  X86PreAMXConfig.cpp
   X86LowerAMXIntrinsics.cpp
   X86TileConfig.cpp
   X86FastPreTileConfig.cpp

diff --git a/llvm/lib/Target/X86/X86.h b/llvm/lib/Target/X86/X86.h
@@ -194,7 +194,6 @@ void initializeX86LowerAMXTypeLegacyPassPass(PassRegistry &);
 void initializeX86LowerTileCopyPass(PassRegistry &);
 void initializeX86OptimizeLEAPassPass(PassRegistry &);
 void initializeX86PartialReductionPass(PassRegistry &);
-void initializeX86PreAMXConfigPassPass(PassRegistry &);
 void initializeX86PreTileConfigPass(PassRegistry &);
 void initializeX86ReturnThunksPass(PassRegistry &);
 void initializeX86SpeculativeExecutionSideEffectSuppressionPass(PassRegistry &);

diff --git a/llvm/lib/Target/X86/X86PreAMXConfig.cpp b/llvm/lib/Target/X86/X86PreAMXConfig.cpp
diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -71,7 +71,6 @@ extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeX86Target() {
   PassRegistry &PR = *PassRegistry::getPassRegistry();
   initializeX86LowerAMXIntrinsicsLegacyPassPass(PR);
   initializeX86LowerAMXTypeLegacyPassPass(PR);
-  initializeX86PreAMXConfigPassPass(PR);
   initializeX86PreTileConfigPass(PR);
   initializeGlobalISel(PR);
   initializeWinEHStatePassPass(PR);

diff --git a/llvm/test/CodeGen/X86/AMX/amx-configO2toO0-precfg.ll b/llvm/test/CodeGen/X86/AMX/amx-configO2toO0-precfg.ll
diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
@@ -351,7 +351,6 @@ static bool shouldPinPassToLegacyPM(StringRef Pass) {
       "expandmemcmp",
       "loop-reduce",
       "lower-amx-type",
-      "pre-amx-config",
       "lower-amx-intrinsics",
       "polyhedral-info",
       "print-polyhedral-info",

diff --git a/llvm/utils/gn/secondary/llvm/lib/Target/X86/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Target/X86/BUILD.gn
@@ -122,7 +122,6 @@ static_library("LLVMX86CodeGen") {
     "X86OptimizeLEAs.cpp",
     "X86PadShortFunction.cpp",
     "X86PartialReduction.cpp",
-    "X86PreAMXConfig.cpp",
     "X86PreTileConfig.cpp",
     "X86RegisterInfo.cpp",
     "X86ReturnThunks.cpp",