forked from OSchip/llvm-project
[gcov] Assign names to some types and loaded values used in @__llvm_internal*
This makes the generated IR much more readable.
This commit is contained in:
Fangrui Song
parent
8cf1ac97ce
commit
f086e85eea
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@ -37,10 +37,10 @@ int test2(int b) {
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}
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// CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %0]
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// CHECK-SAME: [%0 { i32 0, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }, %0 { i32 1, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }]
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// CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %emit_function_args_ty]
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// CHECK-SAME: [%emit_function_args_ty { i32 0, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }, %emit_function_args_ty { i32 1, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }]
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// CHECK: @__llvm_internal_gcov_emit_file_info = internal unnamed_addr constant [1 x %2]
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// CHECK: @__llvm_internal_gcov_emit_file_info = internal unnamed_addr constant [1 x %file_info]
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/// 0x3330342a '3' '0' '4' '*'
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// 304-SAME: i32 858797098
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/// 0x3430372a '4' '0' '7' '*'
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@ -1029,15 +1029,19 @@ Function *GCOVProfiler::insertCounterWriteout(
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// Collect the relevant data into a large constant data structure that we can
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// walk to write out everything.
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StructType *StartFileCallArgsTy = StructType::create(
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{Builder.getInt8PtrTy(), Builder.getInt32Ty(), Builder.getInt32Ty()});
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{Builder.getInt8PtrTy(), Builder.getInt32Ty(), Builder.getInt32Ty()},
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"start_file_args_ty");
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StructType *EmitFunctionCallArgsTy = StructType::create(
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{Builder.getInt32Ty(), Builder.getInt32Ty(), Builder.getInt32Ty()});
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{Builder.getInt32Ty(), Builder.getInt32Ty(), Builder.getInt32Ty()},
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"emit_function_args_ty");
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StructType *EmitArcsCallArgsTy = StructType::create(
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{Builder.getInt32Ty(), Builder.getInt64Ty()->getPointerTo()});
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{Builder.getInt32Ty(), Builder.getInt64Ty()->getPointerTo()},
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"emit_arcs_args_ty");
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StructType *FileInfoTy =
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StructType::create({StartFileCallArgsTy, Builder.getInt32Ty(),
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EmitFunctionCallArgsTy->getPointerTo(),
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EmitArcsCallArgsTy->getPointerTo()});
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EmitArcsCallArgsTy->getPointerTo()},
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"file_info");
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Constant *Zero32 = Builder.getInt32(0);
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// Build an explicit array of two zeros for use in ConstantExpr GEP building.
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@ -1147,41 +1151,46 @@ Function *GCOVProfiler::insertCounterWriteout(
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// The index into the files structure is our loop induction variable.
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Builder.SetInsertPoint(FileLoopHeader);
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PHINode *IV =
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Builder.CreatePHI(Builder.getInt32Ty(), /*NumReservedValues*/ 2);
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PHINode *IV = Builder.CreatePHI(Builder.getInt32Ty(), /*NumReservedValues*/ 2,
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"file_idx");
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IV->addIncoming(Builder.getInt32(0), BB);
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auto *FileInfoPtr = Builder.CreateInBoundsGEP(
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FileInfoArrayTy, FileInfoArrayGV, {Builder.getInt32(0), IV});
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auto *StartFileCallArgsPtr =
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 0);
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 0, "start_file_args");
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auto *StartFileCall = Builder.CreateCall(
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StartFile,
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{Builder.CreateLoad(StartFileCallArgsTy->getElementType(0),
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Builder.CreateStructGEP(StartFileCallArgsTy,
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StartFileCallArgsPtr, 0)),
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StartFileCallArgsPtr, 0),
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"filename"),
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Builder.CreateLoad(StartFileCallArgsTy->getElementType(1),
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Builder.CreateStructGEP(StartFileCallArgsTy,
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StartFileCallArgsPtr, 1)),
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StartFileCallArgsPtr, 1),
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"version"),
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Builder.CreateLoad(StartFileCallArgsTy->getElementType(2),
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Builder.CreateStructGEP(StartFileCallArgsTy,
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StartFileCallArgsPtr, 2))});
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StartFileCallArgsPtr, 2),
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"stamp")});
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if (auto AK = TLI->getExtAttrForI32Param(false))
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StartFileCall->addParamAttr(2, AK);
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auto *NumCounters =
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Builder.CreateLoad(FileInfoTy->getElementType(1),
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 1));
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auto *NumCounters = Builder.CreateLoad(
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FileInfoTy->getElementType(1),
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 1), "num_ctrs");
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auto *EmitFunctionCallArgsArray =
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Builder.CreateLoad(FileInfoTy->getElementType(2),
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 2));
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auto *EmitArcsCallArgsArray =
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Builder.CreateLoad(FileInfoTy->getElementType(3),
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 3));
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 2),
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"emit_function_args");
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auto *EmitArcsCallArgsArray = Builder.CreateLoad(
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FileInfoTy->getElementType(3),
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Builder.CreateStructGEP(FileInfoTy, FileInfoPtr, 3), "emit_arcs_args");
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auto *EnterCounterLoopCond =
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Builder.CreateICmpSLT(Builder.getInt32(0), NumCounters);
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Builder.CreateCondBr(EnterCounterLoopCond, CounterLoopHeader, FileLoopLatch);
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Builder.SetInsertPoint(CounterLoopHeader);
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auto *JV = Builder.CreatePHI(Builder.getInt32Ty(), /*NumReservedValues*/ 2);
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auto *JV = Builder.CreatePHI(Builder.getInt32Ty(), /*NumReservedValues*/ 2,
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"ctr_idx");
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JV->addIncoming(Builder.getInt32(0), FileLoopHeader);
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auto *EmitFunctionCallArgsPtr = Builder.CreateInBoundsGEP(
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EmitFunctionCallArgsTy, EmitFunctionCallArgsArray, JV);
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@ -1189,14 +1198,16 @@ Function *GCOVProfiler::insertCounterWriteout(
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EmitFunction,
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{Builder.CreateLoad(EmitFunctionCallArgsTy->getElementType(0),
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Builder.CreateStructGEP(EmitFunctionCallArgsTy,
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EmitFunctionCallArgsPtr, 0)),
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EmitFunctionCallArgsPtr, 0),
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"ident"),
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Builder.CreateLoad(EmitFunctionCallArgsTy->getElementType(1),
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Builder.CreateStructGEP(EmitFunctionCallArgsTy,
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EmitFunctionCallArgsPtr, 1)),
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EmitFunctionCallArgsPtr, 1),
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"func_checkssum"),
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Builder.CreateLoad(EmitFunctionCallArgsTy->getElementType(2),
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Builder.CreateStructGEP(EmitFunctionCallArgsTy,
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EmitFunctionCallArgsPtr,
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2))});
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EmitFunctionCallArgsPtr, 2),
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"cfg_checksum")});
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if (auto AK = TLI->getExtAttrForI32Param(false)) {
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EmitFunctionCall->addParamAttr(0, AK);
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EmitFunctionCall->addParamAttr(1, AK);
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@ -1208,10 +1219,12 @@ Function *GCOVProfiler::insertCounterWriteout(
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EmitArcs,
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{Builder.CreateLoad(
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EmitArcsCallArgsTy->getElementType(0),
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Builder.CreateStructGEP(EmitArcsCallArgsTy, EmitArcsCallArgsPtr, 0)),
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Builder.CreateLoad(EmitArcsCallArgsTy->getElementType(1),
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Builder.CreateStructGEP(EmitArcsCallArgsTy,
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EmitArcsCallArgsPtr, 1))});
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Builder.CreateStructGEP(EmitArcsCallArgsTy, EmitArcsCallArgsPtr, 0),
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"num_counters"),
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Builder.CreateLoad(
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EmitArcsCallArgsTy->getElementType(1),
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Builder.CreateStructGEP(EmitArcsCallArgsTy, EmitArcsCallArgsPtr, 1),
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"counters")});
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if (auto AK = TLI->getExtAttrForI32Param(false))
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EmitArcsCall->addParamAttr(0, AK);
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auto *NextJV = Builder.CreateAdd(JV, Builder.getInt32(1));
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@ -1222,7 +1235,7 @@ Function *GCOVProfiler::insertCounterWriteout(
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Builder.SetInsertPoint(FileLoopLatch);
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Builder.CreateCall(SummaryInfo, {});
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Builder.CreateCall(EndFile, {});
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auto *NextIV = Builder.CreateAdd(IV, Builder.getInt32(1));
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auto *NextIV = Builder.CreateAdd(IV, Builder.getInt32(1), "next_file_idx");
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auto *FileLoopCond =
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Builder.CreateICmpSLT(NextIV, Builder.getInt32(FileInfos.size()));
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Builder.CreateCondBr(FileLoopCond, FileLoopHeader, ExitBB);
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