Make EffectiveSan compatible with older CPUs.

Also bump version to 0.1.1

VERSION

@@ -1 +1 @@
-0.1-alpha
+0.1.1-alpha

build.sh

@@ -10,7 +10,6 @@
 # Copyright (c) 2018 The National University of Singapore.
 # All rights reserved.
 
-LEGACY=no
 BUILD_PLUGIN=no
 VERSION=`cat VERSION`
 LOWFAT_VERSION=be90b9106a09dde4e9bf9524f002d7db493643eb
@@ -37,18 +36,6 @@ build_llvm()
     ln -fs "$PWD/${RUNTIME_PATH}/lowfat.h" \
         "$PWD/$INSTRUMENTATION_PATH/lowfat.h"
 
-    if [ ! -f "$PWD/${RUNTIME_PATH}/CMakeLists.txt" ]
-    then
-        if [ $LEGACY = no ]
-        then
-            ln -fs "$PWD/${RUNTIME_PATH}/CMakeLists.txt.modern" \
-                "$PWD/${RUNTIME_PATH}/CMakeLists.txt"
-        else
-            ln -fs "$PWD/${RUNTIME_PATH}/CMakeLists.txt.legacy" \
-                "$PWD/${RUNTIME_PATH}/CMakeLists.txt"
-        fi
-    fi
-
     BUILD_PATH=$1
     if [ -e $BUILD_PATH ]
     then
@@ -162,34 +149,6 @@ fi
 
 set -e
 
-echo -n -e "${GREEN}$0${OFF}: checking the CPU..."
-if grep ' bmi1' /proc/cpuinfo > /dev/null
-then
-    echo -n "[bmi]"
-else
-    echo
-    echo -e "${GREEN}$0${OFF}: ${YELLOW}warning${OFF}: CPU does not support BMI"
-    LEGACY=yes
-fi
-if grep ' bmi2' /proc/cpuinfo > /dev/null
-then
-    echo -n "[bmi2]"
-else
-    echo
-    echo -e \
-        "${GREEN}$0${OFF}: ${YELLOW}warning${OFF}: CPU does not support BMI2"
-    LEGACY=yes
-fi
-if grep ' abm' /proc/cpuinfo > /dev/null
-then
-    echo "[lzcnt]"
-else
-    echo
-    echo -e \
-        "${GREEN}$0${OFF}: ${YELLOW}warning${OFF}: CPU does not support LZCNT"
-    LEGACY=yes
-fi
-
 echo -e "${GREEN}$0${OFF}: building the LowFat config builder..."
 (cd config; CC=$CLANG CXX=$CLANGXX make >/dev/null)
 
@@ -315,16 +274,3 @@ echo -e "${BOLD}      \$ $PWD/$RELEASE_NAME/bin/clang++ -fsanitize=effective -O2
 echo -e "${BOLD}      \$ ./a.out${OFF}"
 echo
 
-if [ $LEGACY = yes ]
-then
-    echo "------------------------------------------------------------------"
-    echo -e "${YELLOW}*** LEGACY MODE WARNING ***${OFF}"
-    echo
-    echo "EffectiveSan has been compiled in LEGACY mode for older CPUs."
-    echo "This mode:"
-    echo "    (1) is not officially supported; and"
-    echo "    (2) has some features disabled."
-    echo
-    echo "------------------------------------------------------------------"
-fi
-

llvm-4.0.1.src/projects/compiler-rt/lib/effective/CMakeLists.txt

@@ -9,7 +9,7 @@ set(EFFECTIVE_SOURCES
 
 include_directories(..)
 
-set(EFFECTIVE_CFLAGS -std=gnu99 -m64 -I. -O2 -msse4.2 -msse4.1 -mcmodel=large -DLOWFAT_LINUX -Wno-gnu-empty-initializer -Wno-gnu-flexible-array-initializer -Wno-zero-length-array) 
+set(EFFECTIVE_CFLAGS -std=gnu99 -m64 -I. -O2 -msse4.2 -msse4.1 -mcmodel=large -DLOWFAT_LINUX -Wno-gnu-empty-initializer -Wno-gnu-flexible-array-initializer -Wno-zero-length-array -DLOWFAT_LEGACY=1)
 
 add_compiler_rt_runtime(clang_rt.effective
         STATIC

llvm-4.0.1.src/tools/clang/lib/Basic/Targets.cpp

@@ -3012,12 +3012,9 @@ bool X86TargetInfo::initFeatureMap(
   if (getTriple().getArch() == llvm::Triple::x86_64)
     setFeatureEnabledImpl(Features, "sse2", true);
 
-  // EffectiveSan assumes -mbmi -mbmi2 -mlzcnt -msse4.2 -msse4.1
+  // EffectiveSan assumes -msse4.2 -msse4.1
   setFeatureEnabledImpl(Features, "sse4.1", true);
   setFeatureEnabledImpl(Features, "sse4.2", true);
-  setFeatureEnabledImpl(Features, "lzcnt", true);
-  setFeatureEnabledImpl(Features, "bmi", true);
-  setFeatureEnabledImpl(Features, "bmi2", true);
 
   const CPUKind Kind = getCPUKind(CPU);