Use lld and compiler-rt

Author: arunthomas

Makefile.isp

@@ -15,18 +15,16 @@ endif
 BUILD_TYPE ?= debug
 
 COMMON_CMAKE_FLAGS += -G "Ninja"
-COMMON_CMAKE_FLAGS += -DLLVM_ENABLE_PROJECTS="clang"
+COMMON_CMAKE_FLAGS += -DLLVM_ENABLE_PROJECTS="clang;lld;llvm"
 COMMON_CMAKE_FLAGS += -DCMAKE_MAKE_PROGRAM=$(NINJA)
 COMMON_CMAKE_FLAGS += -DCMAKE_INSTALL_PREFIX=$(ISP_PREFIX)
 COMMON_CMAKE_FLAGS += -DCMAKE_C_COMPILER=clang
 COMMON_CMAKE_FLAGS += -DCMAKE_CXX_COMPILER=clang++
-COMMON_CMAKE_FLAGS += -DLLVM_BINUTILS_INCDIR=/usr/include
 COMMON_CMAKE_FLAGS += -DBUILD_SHARED_LIBS=True
 COMMON_CMAKE_FLAGS += -DLLVM_OPTIMIZED_TABLEGEN=True
 COMMON_CMAKE_FLAGS += -DLLVM_BUILD_TESTS=True
-COMMON_CMAKE_FLAGS += -DDEFAULT_SYSROOT=$(ISP_PREFIX)/riscv64-unknown-elf
-COMMON_CMAKE_FLAGS += -DLLVM_DEFAULT_TARGET_TRIPLE="riscv64-unknown-elf"
 COMMON_CMAKE_FLAGS += -DLLVM_TARGETS_TO_BUILD="RISCV"
+COMMON_CMAKE_FLAGS += -DCLANG_DEFAULT_RTLIB=compiler-rt
 
 DEBUG_CMAKE_FLAGS := -DCMAKE_BUILD_TYPE=Debug
 DEBUG_CMAKE_FLAGS += -DLLVM_ENABLE_ASSERTIONS=ON

compiler-rt/.gitignore

@@ -4,3 +4,5 @@ clang_darwin
 multi_arch
 *.sw?
 *.pyc
+build32
+build64

compiler-rt/Makefile.isp

@@ -0,0 +1,65 @@
+.PHONY: all
+.PHONY: install
+.PHONY: clean
+.PHONY: rv32 rv64
+
+export ISP_PREFIX ?= $(HOME)/.local/isp/
+
+NINJA := ninja
+
+COMMON_FLAGS += -G "Ninja"
+COMMON_FLAGS += -DCMAKE_C_COMPILER=$(ISP_PREFIX)/bin/clang
+COMMON_FLAGS += -DCMAKE_CXX_COMPILER=$(ISP_PREFIX)/bin/clang++
+COMMON_FLAGS += -DCMAKE_AR=$(ISP_PREFIX)/bin/llvm-ar
+COMMON_FLAGS += -DCMAKE_NM=$(ISP_PREFIX)/bin/llvm-nm
+COMMON_FLAGS += -DCMAKE_RANLIB=$(ISP_PREFIX)/bin/llvm-ranlib
+COMMON_FLAGS += -DCMAKE_INSTALL_PREFIX=$(ISP_PREFIX)
+COMMON_FLAGS += -DCMAKE_VERBOSE_MAKEFILE=ON
+COMMON_FLAGS += -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld"
+COMMON_FLAGS += -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY
+COMMON_FLAGS += -DCOMPILER_RT_OS_DIR=baremetal -DCOMPILER_RT_BAREMETAL_BUILD=ON
+COMMON_FLAGS += -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF
+COMMON_FLAGS += -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_PROFILE=OFF
+
+RV32_TARGET_FLAGS += --target=riscv32-unknown-elf -march=rv32ima -mabi=ilp32
+RV32_TARGET_FLAGS += -mno-relax
+RV32_FLAGS += -DCMAKE_C_FLAGS=$(RV32_TARGET_FLAGS)
+RV32_FLAGS += -DCMAKE_CXX_FLAGS=$(RV32_TARGET_FLAGS)
+RV32_FLAGS += -DCMAKE_ASM_FLAGS=$(RV32_TARGET_FLAGS)
+RV32_FLAGS += -DCOMPILER_RT_DEFAULT_TARGET_ARCH=riscv32
+RV32_FLAGS += -DCOMPILER_RT_DEFAULT_TARGET_TRIPLE=riscv32-unknown-elf
+RV32_FLAGS += -DCMAKE_SYSROOT=$(ISP_PREFIX)/clang_sysroot/riscv32-unknown-elf
+
+RV64_TARGET_FLAGS += --target=riscv64-unknown-elf -march=rv64imafd -mabi=lp64d
+RV64_TARGET_FLAGS += -mno-relax -mcmodel=medany
+RV64_FLAGS += -DCMAKE_C_FLAGS=$(RV64_TARGET_FLAGS)
+RV64_FLAGS += -DCMAKE_CXX_FLAGS=$(RV64_TARGET_FLAGS)
+RV64_FLAGS += -DCMAKE_ASM_FLAGS=$(RV64_TARGET_FLAGS)
+RV64_FLAGS += -DCOMPILER_RT_DEFAULT_TARGET_ARCH=riscv64
+RV64_FLAGS += -DCOMPILER_RT_DEFAULT_TARGET_TRIPLE=riscv64-unknown-elf
+RV64_FLAGS += -DCMAKE_SYSROOT=$(ISP_PREFIX)/clang_sysroot/riscv64-unknown-elf
+
+all: rv32 rv64
+
+rv32: build32/build.ninja
+	$(NINJA) -v -C build32
+
+rv64: build64/build.ninja
+	$(NINJA) -v -C build64
+
+build32/build.ninja:
+	mkdir -p build32
+	cd build32; cmake $(COMMON_FLAGS) $(RV32_FLAGS) ..
+
+build64/build.ninja:
+	mkdir -p build64
+	cd build64; cmake $(COMMON_FLAGS) $(RV64_FLAGS) ..
+
+install:
+	$(NINJA) -v -C build32 install
+	$(NINJA) -v -C build64 install
+	mkdir -p $(ISP_PREFIX)/lib/clang/11.0.0/lib
+	cp $(ISP_PREFIX)/lib/baremetal/* $(ISP_PREFIX)/lib/clang/11.0.0/lib
+
+clean:
+	$(RM) -r build32 build64

compiler-rt/lib/builtins/CMakeLists.txt

@@ -645,7 +645,12 @@ else ()
       # double routines.
       if("${arch}" STREQUAL "riscv32")
         list(APPEND BUILTIN_CFLAGS -fforce-enable-int128)
+        list(APPEND BUILTIN_CFLAGS -march=rv32ima -mabi=ilp32)
       endif()
+      if("${arch}" STREQUAL "riscv64")
+        list(APPEND BUILTIN_CFLAGS -march=rv64imafd -mabi=lp64d)
+      endif()
+      list(APPEND BUILTIN_CFLAGS -mno-relax)
 
       add_compiler_rt_runtime(clang_rt.builtins
                               STATIC

llvm/lib/Target/RISCV/MCTargetDesc/ISPELFStreamer.cpp

@@ -37,8 +37,6 @@ void ISPTargetELFStreamer::EmitSSITHMetadataHeader(MCObjectStreamer &Streamer){
   SmallString<256> Code;
   raw_svector_ostream VecOS(Code);
 
-  printf("emitting metadata header!\n");
-  
   //Emit the Metadata tag
   uint8_t MD = DMD_SET_BASE_ADDRESS_OP;
   support::endian::write(VecOS, MD, support::little);