Add ppc64le builds to Travis (#6144)

Summary:
Let's see how this goes...
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6144

Differential Revision: D20387515

Pulled By: pdillinger

fbshipit-source-id: ba2669348c267141dfddff910b4c2224a22cbb38

.travis.yml

@@ -3,6 +3,9 @@ language: cpp
 os:
   - linux
   - osx
+arch:
+  - amd64
+  - ppc64le
 compiler:
   - clang
   - gcc
@@ -62,12 +65,22 @@ matrix:
     env: TEST_GROUP=4
   - os: osx
     env: JOB_NAME=cmake-gcc8
-  - os : osx
+  - os: osx
     env: JOB_NAME=cmake-mingw
-  - os : linux
-    compiler: clang
-  - os : osx
+  - os: osx
+    arch: ppc64le
+  - os: osx
     compiler: gcc
+  - os: linux
+    arch: ppc64le
+    env: JOB_NAME=cmake-mingw
+  - os: linux
+    compiler: clang
+
+before_install:
+  - if [[ "${JOB_NAME}" == java_test  || "${JOB_NAME}" == cmake* ]] && [ "$(uname -m)" == ppc64le ]; then
+     sudo apt-get -y install openjdk-8-jdk && export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-ppc64el;
+   fi
 
 install:
   - if [ "${TRAVIS_OS_NAME}" == osx ]; then
@@ -81,9 +94,11 @@ install:
       sudo apt-get install -y mingw-w64 ;
     fi
   - if [[ "${JOB_NAME}" == cmake* ]] && [ "${TRAVIS_OS_NAME}" == linux ]; then
-      mkdir cmake-dist && curl --silent --fail --show-error --location https://github.com/Kitware/CMake/releases/download/v3.14.5/cmake-3.14.5-Linux-x86_64.tar.gz | tar --strip-components=1 -C cmake-dist -xz && export PATH=$PWD/cmake-dist/bin:$PATH;
+      CMAKE_DIST_URL="https://github.com/pdillinger/rocksdb/releases/download/cmake-3.14.5/cmake-3.14.5-Linux-$(uname -m).tar.bz2";
+      TAR_OPT="--strip-components=1 -xj";
+      mkdir cmake-dist && curl --silent --fail --show-error --location "${CMAKE_DIST_URL}" | tar -C cmake-dist ${TAR_OPT} && export PATH=$PWD/cmake-dist/bin:$PATH;
     fi
-  - if [[ "${JOB_NAME}" == java_test ]]; then
+  - if [[ "${JOB_NAME}" == java_test || "${JOB_NAME}" == cmake* ]]; then
       java -version && echo "JAVA_HOME=${JAVA_HOME}";
     fi
 

CMakeLists.txt

@@ -203,16 +203,25 @@ else()
 endif()
 
 include(CheckCCompilerFlag)
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
+  CHECK_C_COMPILER_FLAG("-mcpu=power9" HAS_POWER9)
+  if(HAS_POWER9)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=power9 -mtune=power9")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power9 -mtune=power9")
+  else()
+    CHECK_C_COMPILER_FLAG("-mcpu=power8" HAS_POWER8)
+    if(HAS_POWER8)
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=power8 -mtune=power8")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power8 -mtune=power8")
+    endif(HAS_POWER8)
+  endif(HAS_POWER9)
   CHECK_C_COMPILER_FLAG("-maltivec" HAS_ALTIVEC)
   if(HAS_ALTIVEC)
     message(STATUS " HAS_ALTIVEC yes")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maltivec")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=power8")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power8")
   endif(HAS_ALTIVEC)
-endif(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")
+endif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
 
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
         CHECK_C_COMPILER_FLAG("-march=armv8-a+crc+crypto" HAS_ARMV8_CRC)
@@ -235,7 +244,7 @@ else()
   if(MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX2")
   else()
-    if(NOT HAVE_POWER8 AND NOT HAS_ARMV8_CRC)
+    if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64" AND NOT HAS_ARMV8_CRC)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
     endif()
   endif()
@@ -741,11 +750,11 @@ if(HAVE_SSE42 AND NOT MSVC)
     PROPERTIES COMPILE_FLAGS "-msse4.2 -mpclmul")
 endif()
 
-if(HAVE_POWER8)
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
   list(APPEND SOURCES
     util/crc32c_ppc.c
     util/crc32c_ppc_asm.S)
-endif(HAVE_POWER8)
+endif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
 
 if(HAS_ARMV8_CRC)
   list(APPEND SOURCES

db/plain_table_db_test.cc

@@ -1275,7 +1275,7 @@ static std::string RandomString(Random* rnd, int len) {
 
 TEST_P(PlainTableDBTest, CompactionTrigger) {
   Options options = CurrentOptions();
-  options.write_buffer_size = 120 << 10;  // 100KB
+  options.write_buffer_size = 120 << 10;  // 120KB
   options.num_levels = 3;
   options.level0_file_num_compaction_trigger = 3;
   Reopen(&options);
@@ -1287,7 +1287,7 @@ TEST_P(PlainTableDBTest, CompactionTrigger) {
     std::vector<std::string> values;
     // Write 120KB (10 values, each 12K)
     for (int i = 0; i < 10; i++) {
-      values.push_back(RandomString(&rnd, 12000));
+      values.push_back(RandomString(&rnd, 12 << 10));
       ASSERT_OK(Put(Key(i), values[i]));
     }
     ASSERT_OK(Put(Key(999), ""));

util/xxh3p.h

@@ -637,7 +637,7 @@ XXH3p_accumulate_512(      void* XXH_RESTRICT acc,
         }
     }
 
-#elif (XXH_VECTOR == XXH_VSX)
+#elif (XXH_VECTOR == XXH_VSX) && /* work around a compiler bug */ (__GNUC__ > 5)
           U64x2* const xacc =        (U64x2*) acc;    /* presumed aligned */
     U64x2 const* const xinput = (U64x2 const*) input;   /* no alignment restriction */
     U64x2 const* const xsecret  = (U64x2 const*) secret;    /* no alignment restriction */
@@ -782,7 +782,7 @@ XXH3p_scrambleAcc(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
             xacc[i] = vmlal_u32(xacc[i], shuffled.val[0], prime);
     }   }
 
-#elif (XXH_VECTOR == XXH_VSX)
+#elif (XXH_VECTOR == XXH_VSX) && /* work around a compiler bug */ (__GNUC__ > 5)
 
           U64x2* const xacc =       (U64x2*) acc;
     const U64x2* const xsecret = (const U64x2*) secret;