--- a/common/autoconf/flags.m4 Mon Feb 22 11:22:55 2016 +0100
+++ b/common/autoconf/flags.m4 Mon Feb 22 11:27:09 2016 +0100
@@ -123,12 +123,16 @@
[
# COMPILER_TARGET_BITS_FLAG : option for selecting 32- or 64-bit output
# COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler
+ # COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder
+ # commands produced by the link step (currently AIX only)
if test "x$TOOLCHAIN_TYPE" = xxlc; then
COMPILER_TARGET_BITS_FLAG="-q"
COMPILER_COMMAND_FILE_FLAG="-f"
+ COMPILER_BINDCMD_FILE_FLAG="-bloadmap:"
else
COMPILER_TARGET_BITS_FLAG="-m"
COMPILER_COMMAND_FILE_FLAG="@"
+ COMPILER_BINDCMD_FILE_FLAG=""
# The solstudio linker does not support @-files.
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
@@ -152,6 +156,7 @@
fi
AC_SUBST(COMPILER_TARGET_BITS_FLAG)
AC_SUBST(COMPILER_COMMAND_FILE_FLAG)
+ AC_SUBST(COMPILER_BINDCMD_FILE_FLAG)
# FIXME: figure out if we should select AR flags depending on OS or toolchain.
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
@@ -294,10 +299,23 @@
SET_SHARED_LIBRARY_NAME='-h [$]1'
SET_SHARED_LIBRARY_MAPFILE='-M[$]1'
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
- PICFLAG="-qpic=large"
+ # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only
+ # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker
+ # will have to patch this single instruction with a call to some out-of-order code which
+ # does the load from the TOC. This is of course slow. But in that case we also would have
+ # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.
+ # With 'qpic=large' the compiler will by default generate a two-instruction sequence which
+ # can be patched directly by the linker and does not require a jump to out-of-order code.
+ # Another alternative instead of using 'qpic=large -bbigtoc' may be to use '-qminimaltoc'
+ # instead. This creates a distinct TOC for every compilation unit (and thus requires two
+ # loads for accessing a global variable). But there are rumors that this may be seen as a
+ # 'performance feature' because of improved code locality of the symbols used in a
+ # compilation unit.
+ PICFLAG="-qpic"
+ JVM_CFLAGS="$JVM_CFLAGS $PICFLAG"
C_FLAG_REORDER=''
CXX_FLAG_REORDER=''
- SHARED_LIBRARY_FLAGS="-qmkshrobj"
+ SHARED_LIBRARY_FLAGS="-qmkshrobj -bM:SRE -bnoentry"
SET_EXECUTABLE_ORIGIN=""
SET_SHARED_LIBRARY_ORIGIN=''
SET_SHARED_LIBRARY_NAME=''
@@ -835,7 +853,7 @@
LDFLAGS_CXX_SOLSTUDIO="-norunpath"
LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK $LDFLAGS_CXX_SOLSTUDIO -xnolib"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
- LDFLAGS_XLC="-brtl -bnolibpath -bexpall -bernotok"
+ LDFLAGS_XLC="-b64 -brtl -bnolibpath -bexpall -bernotok"
LDFLAGS_JDK="${LDFLAGS_JDK} $LDFLAGS_XLC"
fi
--- a/common/autoconf/generated-configure.sh Mon Feb 22 11:22:55 2016 +0100
+++ b/common/autoconf/generated-configure.sh Mon Feb 22 11:27:09 2016 +0100
@@ -744,6 +744,7 @@
CC_OUT_OPTION
STRIPFLAGS
ARFLAGS
+COMPILER_BINDCMD_FILE_FLAG
COMPILER_COMMAND_FILE_FLAG
COMPILER_TARGET_BITS_FLAG
JT_HOME
@@ -4861,7 +4862,7 @@
#CUSTOM_AUTOCONF_INCLUDE
# Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1456136545
+DATE_WHEN_GENERATED=1456136781
###############################################################################
#
@@ -45392,12 +45393,16 @@
# COMPILER_TARGET_BITS_FLAG : option for selecting 32- or 64-bit output
# COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler
+ # COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder
+ # commands produced by the link step (currently AIX only)
if test "x$TOOLCHAIN_TYPE" = xxlc; then
COMPILER_TARGET_BITS_FLAG="-q"
COMPILER_COMMAND_FILE_FLAG="-f"
+ COMPILER_BINDCMD_FILE_FLAG="-bloadmap:"
else
COMPILER_TARGET_BITS_FLAG="-m"
COMPILER_COMMAND_FILE_FLAG="@"
+ COMPILER_BINDCMD_FILE_FLAG=""
# The solstudio linker does not support @-files.
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
@@ -45425,6 +45430,7 @@
+
# FIXME: figure out if we should select AR flags depending on OS or toolchain.
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
ARFLAGS="-r"
@@ -46199,10 +46205,23 @@
SET_SHARED_LIBRARY_NAME='-h $1'
SET_SHARED_LIBRARY_MAPFILE='-M$1'
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
- PICFLAG="-qpic=large"
+ # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only
+ # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker
+ # will have to patch this single instruction with a call to some out-of-order code which
+ # does the load from the TOC. This is of course slow. But in that case we also would have
+ # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.
+ # With 'qpic=large' the compiler will by default generate a two-instruction sequence which
+ # can be patched directly by the linker and does not require a jump to out-of-order code.
+ # Another alternative instead of using 'qpic=large -bbigtoc' may be to use '-qminimaltoc'
+ # instead. This creates a distinct TOC for every compilation unit (and thus requires two
+ # loads for accessing a global variable). But there are rumors that this may be seen as a
+ # 'performance feature' because of improved code locality of the symbols used in a
+ # compilation unit.
+ PICFLAG="-qpic"
+ JVM_CFLAGS="$JVM_CFLAGS $PICFLAG"
C_FLAG_REORDER=''
CXX_FLAG_REORDER=''
- SHARED_LIBRARY_FLAGS="-qmkshrobj"
+ SHARED_LIBRARY_FLAGS="-qmkshrobj -bM:SRE -bnoentry"
SET_EXECUTABLE_ORIGIN=""
SET_SHARED_LIBRARY_ORIGIN=''
SET_SHARED_LIBRARY_NAME=''
@@ -46825,7 +46844,7 @@
LDFLAGS_CXX_SOLSTUDIO="-norunpath"
LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK $LDFLAGS_CXX_SOLSTUDIO -xnolib"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
- LDFLAGS_XLC="-brtl -bnolibpath -bexpall -bernotok"
+ LDFLAGS_XLC="-b64 -brtl -bnolibpath -bexpall -bernotok"
LDFLAGS_JDK="${LDFLAGS_JDK} $LDFLAGS_XLC"
fi
--- a/common/autoconf/spec.gmk.in Mon Feb 22 11:22:55 2016 +0100
+++ b/common/autoconf/spec.gmk.in Mon Feb 22 11:27:09 2016 +0100
@@ -314,6 +314,10 @@
# Option used to pass a command file to the compiler
COMPILER_COMMAND_FILE_FLAG:=@COMPILER_COMMAND_FILE_FLAG@
+# Option for specifying a file which saves the binder commands
+# produced by the link step (for debugging, currently AIX only)
+COMPILER_BINDCMD_FILE_FLAG:=@COMPILER_BINDCMD_FILE_FLAG@
+
CC_OUT_OPTION:=@CC_OUT_OPTION@
EXE_OUT_OPTION:=@EXE_OUT_OPTION@
LD_OUT_OPTION:=@LD_OUT_OPTION@
--- a/make/common/NativeCompilation.gmk Mon Feb 22 11:22:55 2016 +0100
+++ b/make/common/NativeCompilation.gmk Mon Feb 22 11:27:09 2016 +0100
@@ -771,6 +771,11 @@
$1_EXTRA_LDFLAGS += "-implib:$$($1_OBJECT_DIR)/$$($1_LIBRARY).lib"
endif
+ # Create loadmap on AIX. Helps in diagnosing some problems.
+ ifneq ($(COMPILER_BINDCMD_FILE_FLAG),)
+ $1_EXTRA_LDFLAGS += $(COMPILER_BINDCMD_FILE_FLAG)$$($1_OBJECT_DIR)/$$($1_NOSUFFIX).loadmap
+ endif
+
$1_EXTRA_LIBS += $(GLOBAL_LIBS)
$1_VARDEPS := $$($1_LD) $$($1_SYSROOT_LDFLAGS) $$($1_LDFLAGS) $$($1_EXTRA_LDFLAGS) \