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Fix PR1836: in the interpreter, read and write apints
using the minimum possible number of bytes. For little endian targets run on little endian machines, apints are stored in memory from LSB to MSB as before. For big endian targets on big endian machines they are stored from MSB to LSB which wasn't always the case before (if the target and host endianness doesn't match values are stored according to the host's endianness). Doing this requires knowing the endianness of the host, which is determined when configuring - thanks go to Anton for this. Only having access to little endian machines I was unable to properly test the big endian part, which is also the most complicated... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44796 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
3a7bcc4d1b
commit
1eff70451f
@ -227,7 +227,10 @@ dnl Define a substitution, ARCH, for the target architecture
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AC_SUBST(ARCH,$llvm_cv_target_arch)
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AC_SUBST(ARCH,$llvm_cv_target_arch)
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dnl Check for the endianness of the target
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dnl Check for the endianness of the target
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AC_C_BIGENDIAN(AC_SUBST([ENDIAN],[big]),AC_SUBST([ENDIAN],[little]))
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AC_C_BIGENDIAN([AC_SUBST([ENDIAN],[big]),
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AC_DEFINE([MSB_FIRST], [1], [Define if this target is big endian])],
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[AC_SUBST([ENDIAN],[little]),
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AC_DEFINE([LSB_FIRST], [1], [Define if this target is little endian])])
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dnl Check for build platform executable suffix if we're crosscompiling
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dnl Check for build platform executable suffix if we're crosscompiling
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if test "$cross_compiling" = yes; then
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if test "$cross_compiling" = yes; then
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70
configure
vendored
70
configure
vendored
@ -828,7 +828,6 @@ NOLINKALL
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LLVM_ON_UNIX
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LLVM_ON_UNIX
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LLVM_ON_WIN32
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LLVM_ON_WIN32
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ARCH
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ARCH
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ENDIAN
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CC
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CC
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CFLAGS
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CFLAGS
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LDFLAGS
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LDFLAGS
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@ -839,6 +838,7 @@ OBJEXT
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CPP
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CPP
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GREP
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GREP
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EGREP
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EGREP
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ENDIAN
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LLVM_CROSS_COMPILING
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LLVM_CROSS_COMPILING
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BUILD_CC
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BUILD_CC
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BUILD_EXEEXT
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BUILD_EXEEXT
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@ -4183,9 +4183,19 @@ echo "${ECHO_T}$ac_cv_c_bigendian" >&6; }
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case $ac_cv_c_bigendian in
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case $ac_cv_c_bigendian in
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yes)
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yes)
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ENDIAN=big
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ENDIAN=big
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,
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cat >>confdefs.h <<\_ACEOF
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#define MSB_FIRST 1
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_ACEOF
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;;
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;;
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no)
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no)
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ENDIAN=little
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ENDIAN=little
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,
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cat >>confdefs.h <<\_ACEOF
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#define LSB_FIRST 1
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_ACEOF
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;;
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;;
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*)
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*)
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{ { echo "$as_me:$LINENO: error: unknown endianness
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{ { echo "$as_me:$LINENO: error: unknown endianness
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@ -8220,7 +8230,9 @@ if test "${enable_ltdl_install+set}" = set; then
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fi
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fi
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if test x"${enable_ltdl_install-no}" != xno; then
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if test x"${enable_ltdl_install-no}" != xno; then
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INSTALL_LTDL_TRUE=
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INSTALL_LTDL_TRUE=
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INSTALL_LTDL_FALSE='#'
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INSTALL_LTDL_FALSE='#'
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else
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else
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@ -8228,7 +8240,9 @@ else
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INSTALL_LTDL_FALSE=
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INSTALL_LTDL_FALSE=
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fi
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fi
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if test x"${enable_ltdl_convenience-no}" != xno; then
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if test x"${enable_ltdl_convenience-no}" != xno; then
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CONVENIENCE_LTDL_TRUE=
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CONVENIENCE_LTDL_TRUE=
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CONVENIENCE_LTDL_FALSE='#'
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CONVENIENCE_LTDL_FALSE='#'
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else
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else
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@ -9867,7 +9881,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<EOF
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cat > conftest.$ac_ext <<EOF
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#line 9870 "configure"
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#line 9884 "configure"
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#include "confdefs.h"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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#if HAVE_DLFCN_H
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@ -11802,7 +11816,7 @@ ia64-*-hpux*)
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;;
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;;
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*-*-irix6*)
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*-*-irix6*)
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# Find out which ABI we are using.
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# Find out which ABI we are using.
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echo '#line 11805 "configure"' > conftest.$ac_ext
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echo '#line 11819 "configure"' > conftest.$ac_ext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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ac_status=$?
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@ -13442,11 +13456,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:13445: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:13459: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
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cat conftest.err >&5
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echo "$as_me:13449: \$? = $ac_status" >&5
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echo "$as_me:13463: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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# So say no if there are warnings other than the usual output.
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@ -13710,11 +13724,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:13713: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:13727: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
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cat conftest.err >&5
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echo "$as_me:13717: \$? = $ac_status" >&5
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echo "$as_me:13731: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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# So say no if there are warnings other than the usual output.
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@ -13814,11 +13828,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:13817: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:13831: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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ac_status=$?
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cat out/conftest.err >&5
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cat out/conftest.err >&5
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echo "$as_me:13821: \$? = $ac_status" >&5
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echo "$as_me:13835: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
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then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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@ -16122,7 +16136,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<EOF
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cat > conftest.$ac_ext <<EOF
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#line 16125 "configure"
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#line 16139 "configure"
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#include "confdefs.h"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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#if HAVE_DLFCN_H
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@ -16222,7 +16236,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<EOF
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cat > conftest.$ac_ext <<EOF
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#line 16225 "configure"
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#line 16239 "configure"
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#include "confdefs.h"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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#if HAVE_DLFCN_H
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@ -18558,11 +18572,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:18561: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:18575: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
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cat conftest.err >&5
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echo "$as_me:18565: \$? = $ac_status" >&5
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echo "$as_me:18579: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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# So say no if there are warnings other than the usual output.
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@ -18662,11 +18676,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:18665: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:18679: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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ac_status=$?
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cat out/conftest.err >&5
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cat out/conftest.err >&5
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echo "$as_me:18669: \$? = $ac_status" >&5
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echo "$as_me:18683: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
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then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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@ -20232,11 +20246,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
|
-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:20235: $lt_compile\"" >&5)
|
(eval echo "\"\$as_me:20249: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
|
cat conftest.err >&5
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echo "$as_me:20239: \$? = $ac_status" >&5
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echo "$as_me:20253: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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# So say no if there are warnings other than the usual output.
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@ -20336,11 +20350,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
|
-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:20339: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:20353: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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ac_status=$?
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cat out/conftest.err >&5
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cat out/conftest.err >&5
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echo "$as_me:20343: \$? = $ac_status" >&5
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echo "$as_me:20357: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
|
then
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# The compiler can only warn and ignore the option if not recognized
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# The compiler can only warn and ignore the option if not recognized
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@ -22539,11 +22553,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
||||||
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
||||||
-e 's:$: $lt_compiler_flag:'`
|
-e 's:$: $lt_compiler_flag:'`
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||||||
(eval echo "\"\$as_me:22542: $lt_compile\"" >&5)
|
(eval echo "\"\$as_me:22556: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
|
cat conftest.err >&5
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echo "$as_me:22546: \$? = $ac_status" >&5
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echo "$as_me:22560: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
|
# The compiler can only warn and ignore the option if not recognized
|
||||||
# So say no if there are warnings other than the usual output.
|
# So say no if there are warnings other than the usual output.
|
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@ -22807,11 +22821,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
||||||
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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||||||
-e 's:$: $lt_compiler_flag:'`
|
-e 's:$: $lt_compiler_flag:'`
|
||||||
(eval echo "\"\$as_me:22810: $lt_compile\"" >&5)
|
(eval echo "\"\$as_me:22824: $lt_compile\"" >&5)
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||||||
(eval "$lt_compile" 2>conftest.err)
|
(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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ac_status=$?
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cat conftest.err >&5
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cat conftest.err >&5
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echo "$as_me:22814: \$? = $ac_status" >&5
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echo "$as_me:22828: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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if (exit $ac_status) && test -s "$ac_outfile"; then
|
||||||
# The compiler can only warn and ignore the option if not recognized
|
# The compiler can only warn and ignore the option if not recognized
|
||||||
# So say no if there are warnings other than the usual output.
|
# So say no if there are warnings other than the usual output.
|
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@ -22911,11 +22925,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
||||||
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
||||||
-e 's:$: $lt_compiler_flag:'`
|
-e 's:$: $lt_compiler_flag:'`
|
||||||
(eval echo "\"\$as_me:22914: $lt_compile\"" >&5)
|
(eval echo "\"\$as_me:22928: $lt_compile\"" >&5)
|
||||||
(eval "$lt_compile" 2>out/conftest.err)
|
(eval "$lt_compile" 2>out/conftest.err)
|
||||||
ac_status=$?
|
ac_status=$?
|
||||||
cat out/conftest.err >&5
|
cat out/conftest.err >&5
|
||||||
echo "$as_me:22918: \$? = $ac_status" >&5
|
echo "$as_me:22932: \$? = $ac_status" >&5
|
||||||
if (exit $ac_status) && test -s out/conftest2.$ac_objext
|
if (exit $ac_status) && test -s out/conftest2.$ac_objext
|
||||||
then
|
then
|
||||||
# The compiler can only warn and ignore the option if not recognized
|
# The compiler can only warn and ignore the option if not recognized
|
||||||
@ -32755,7 +32769,6 @@ NOLINKALL!$NOLINKALL$ac_delim
|
|||||||
LLVM_ON_UNIX!$LLVM_ON_UNIX$ac_delim
|
LLVM_ON_UNIX!$LLVM_ON_UNIX$ac_delim
|
||||||
LLVM_ON_WIN32!$LLVM_ON_WIN32$ac_delim
|
LLVM_ON_WIN32!$LLVM_ON_WIN32$ac_delim
|
||||||
ARCH!$ARCH$ac_delim
|
ARCH!$ARCH$ac_delim
|
||||||
ENDIAN!$ENDIAN$ac_delim
|
|
||||||
CC!$CC$ac_delim
|
CC!$CC$ac_delim
|
||||||
CFLAGS!$CFLAGS$ac_delim
|
CFLAGS!$CFLAGS$ac_delim
|
||||||
LDFLAGS!$LDFLAGS$ac_delim
|
LDFLAGS!$LDFLAGS$ac_delim
|
||||||
@ -32766,6 +32779,7 @@ OBJEXT!$OBJEXT$ac_delim
|
|||||||
CPP!$CPP$ac_delim
|
CPP!$CPP$ac_delim
|
||||||
GREP!$GREP$ac_delim
|
GREP!$GREP$ac_delim
|
||||||
EGREP!$EGREP$ac_delim
|
EGREP!$EGREP$ac_delim
|
||||||
|
ENDIAN!$ENDIAN$ac_delim
|
||||||
LLVM_CROSS_COMPILING!$LLVM_CROSS_COMPILING$ac_delim
|
LLVM_CROSS_COMPILING!$LLVM_CROSS_COMPILING$ac_delim
|
||||||
BUILD_CC!$BUILD_CC$ac_delim
|
BUILD_CC!$BUILD_CC$ac_delim
|
||||||
BUILD_EXEEXT!$BUILD_EXEEXT$ac_delim
|
BUILD_EXEEXT!$BUILD_EXEEXT$ac_delim
|
||||||
|
@ -494,6 +494,9 @@
|
|||||||
/* Installation prefix directory */
|
/* Installation prefix directory */
|
||||||
#undef LLVM_PREFIX
|
#undef LLVM_PREFIX
|
||||||
|
|
||||||
|
/* Define if this target is little endian */
|
||||||
|
#undef LSB_FIRST
|
||||||
|
|
||||||
/* Define if the OS needs help to load dependent libraries for dlopen(). */
|
/* Define if the OS needs help to load dependent libraries for dlopen(). */
|
||||||
#undef LTDL_DLOPEN_DEPLIBS
|
#undef LTDL_DLOPEN_DEPLIBS
|
||||||
|
|
||||||
@ -511,6 +514,9 @@
|
|||||||
/* Define to the system default library search path. */
|
/* Define to the system default library search path. */
|
||||||
#undef LTDL_SYSSEARCHPATH
|
#undef LTDL_SYSSEARCHPATH
|
||||||
|
|
||||||
|
/* Define if this target is big endian */
|
||||||
|
#undef MSB_FIRST
|
||||||
|
|
||||||
/* Define if /dev/zero should be used when mapping RWX memory, or undefine if
|
/* Define if /dev/zero should be used when mapping RWX memory, or undefine if
|
||||||
its not necessary */
|
its not necessary */
|
||||||
#undef NEED_DEV_ZERO_FOR_MMAP
|
#undef NEED_DEV_ZERO_FOR_MMAP
|
||||||
|
@ -23,6 +23,7 @@
|
|||||||
#include "llvm/Pass.h"
|
#include "llvm/Pass.h"
|
||||||
#include "llvm/Support/DataTypes.h"
|
#include "llvm/Support/DataTypes.h"
|
||||||
#include "llvm/ADT/SmallVector.h"
|
#include "llvm/ADT/SmallVector.h"
|
||||||
|
#include "llvm/Config/config.h"
|
||||||
#include <string>
|
#include <string>
|
||||||
|
|
||||||
namespace llvm {
|
namespace llvm {
|
||||||
@ -142,6 +143,16 @@ public:
|
|||||||
bool isLittleEndian() const { return LittleEndian; }
|
bool isLittleEndian() const { return LittleEndian; }
|
||||||
bool isBigEndian() const { return !LittleEndian; }
|
bool isBigEndian() const { return !LittleEndian; }
|
||||||
|
|
||||||
|
/// Host endianness...
|
||||||
|
bool hostIsLittleEndian() const {
|
||||||
|
#ifdef LSB_FIRST
|
||||||
|
return true;
|
||||||
|
#else
|
||||||
|
return false;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
bool hostIsBigEndian() const { return !hostIsLittleEndian(); }
|
||||||
|
|
||||||
/// getStringRepresentation - Return the string representation of the
|
/// getStringRepresentation - Return the string representation of the
|
||||||
/// TargetData. This representation is in the same format accepted by the
|
/// TargetData. This representation is in the same format accepted by the
|
||||||
/// string constructor above.
|
/// string constructor above.
|
||||||
|
@ -633,20 +633,27 @@ void ExecutionEngine::StoreValueToMemory(const GenericValue &Val, GenericValue *
|
|||||||
switch (Ty->getTypeID()) {
|
switch (Ty->getTypeID()) {
|
||||||
case Type::IntegerTyID: {
|
case Type::IntegerTyID: {
|
||||||
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
|
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
|
||||||
GenericValue TmpVal = Val;
|
unsigned StoreBytes = (BitWidth + 7)/8;
|
||||||
if (BitWidth <= 8)
|
uint8_t *Src = (uint8_t *)Val.IntVal.getRawData();
|
||||||
*((uint8_t*)Ptr) = uint8_t(Val.IntVal.getZExtValue());
|
uint8_t *Dst = (uint8_t *)Ptr;
|
||||||
else if (BitWidth <= 16) {
|
|
||||||
*((uint16_t*)Ptr) = uint16_t(Val.IntVal.getZExtValue());
|
if (getTargetData()->hostIsLittleEndian())
|
||||||
} else if (BitWidth <= 32) {
|
// Little-endian host - the source is ordered from LSB to MSB.
|
||||||
*((uint32_t*)Ptr) = uint32_t(Val.IntVal.getZExtValue());
|
// Order the destination from LSB to MSB: Do a straight copy.
|
||||||
} else if (BitWidth <= 64) {
|
memcpy(Dst, Src, StoreBytes);
|
||||||
*((uint64_t*)Ptr) = uint64_t(Val.IntVal.getZExtValue());
|
else {
|
||||||
} else {
|
// Big-endian host - the source is an array of 64 bit words ordered from
|
||||||
uint64_t *Dest = (uint64_t*)Ptr;
|
// LSW to MSW. Each word is ordered from MSB to LSB.
|
||||||
const uint64_t *Src = Val.IntVal.getRawData();
|
// Order the destination from MSB to LSB: Reverse the word order, but not
|
||||||
for (uint32_t i = 0; i < Val.IntVal.getNumWords(); ++i)
|
// the bytes in a word.
|
||||||
Dest[i] = Src[i];
|
while (StoreBytes > sizeof(uint64_t)) {
|
||||||
|
StoreBytes -= sizeof(uint64_t);
|
||||||
|
// May not be aligned so use memcpy.
|
||||||
|
memcpy(Dst + StoreBytes, Src, sizeof(uint64_t));
|
||||||
|
Src += sizeof(uint64_t);
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy(Dst, Src + sizeof(uint64_t) - StoreBytes, StoreBytes);
|
||||||
}
|
}
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
@ -683,16 +690,32 @@ void ExecutionEngine::LoadValueFromMemory(GenericValue &Result,
|
|||||||
switch (Ty->getTypeID()) {
|
switch (Ty->getTypeID()) {
|
||||||
case Type::IntegerTyID: {
|
case Type::IntegerTyID: {
|
||||||
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
|
unsigned BitWidth = cast<IntegerType>(Ty)->getBitWidth();
|
||||||
if (BitWidth <= 8)
|
unsigned LoadBytes = (BitWidth + 7)/8;
|
||||||
Result.IntVal = APInt(BitWidth, *((uint8_t*)Ptr));
|
|
||||||
else if (BitWidth <= 16) {
|
// An APInt with all words initially zero.
|
||||||
Result.IntVal = APInt(BitWidth, *((uint16_t*)Ptr));
|
Result.IntVal = APInt(BitWidth, 0);
|
||||||
} else if (BitWidth <= 32) {
|
|
||||||
Result.IntVal = APInt(BitWidth, *((uint32_t*)Ptr));
|
uint8_t *Src = (uint8_t *)Ptr;
|
||||||
} else if (BitWidth <= 64) {
|
uint8_t *Dst = (uint8_t *)Result.IntVal.getRawData();
|
||||||
Result.IntVal = APInt(BitWidth, *((uint64_t*)Ptr));
|
|
||||||
} else
|
if (getTargetData()->hostIsLittleEndian())
|
||||||
Result.IntVal = APInt(BitWidth, (BitWidth+63)/64, (uint64_t*)Ptr);
|
// Little-endian host - the destination must be ordered from LSB to MSB.
|
||||||
|
// The source is ordered from LSB to MSB: Do a straight copy.
|
||||||
|
memcpy(Dst, Src, LoadBytes);
|
||||||
|
else {
|
||||||
|
// Big-endian - the destination is an array of 64 bit words ordered from
|
||||||
|
// LSW to MSW. Each word must be ordered from MSB to LSB. The source is
|
||||||
|
// ordered from MSB to LSB: Reverse the word order, but not the bytes in
|
||||||
|
// a word.
|
||||||
|
while (LoadBytes > sizeof(uint64_t)) {
|
||||||
|
LoadBytes -= sizeof(uint64_t);
|
||||||
|
// May not be aligned so use memcpy.
|
||||||
|
memcpy(Dst, Src + LoadBytes, sizeof(uint64_t));
|
||||||
|
Dst += sizeof(uint64_t);
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy(Dst + sizeof(uint64_t) - LoadBytes, Src, LoadBytes);
|
||||||
|
}
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
case Type::FloatTyID:
|
case Type::FloatTyID:
|
||||||
|
19
test/ExecutionEngine/2007-12-10-APIntLoadStore.ll
Normal file
19
test/ExecutionEngine/2007-12-10-APIntLoadStore.ll
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
; RUN: llvm-as < %s -o - | lli -force-interpreter
|
||||||
|
; PR1836
|
||||||
|
|
||||||
|
define i32 @main() {
|
||||||
|
entry:
|
||||||
|
%retval = alloca i32 ; <i32*> [#uses=2]
|
||||||
|
%tmp = alloca i32 ; <i32*> [#uses=2]
|
||||||
|
%x = alloca i75, align 16 ; <i75*> [#uses=1]
|
||||||
|
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
|
||||||
|
store i75 999, i75* %x, align 16
|
||||||
|
store i32 0, i32* %tmp, align 4
|
||||||
|
%tmp1 = load i32* %tmp, align 4 ; <i32> [#uses=1]
|
||||||
|
store i32 %tmp1, i32* %retval, align 4
|
||||||
|
br label %return
|
||||||
|
|
||||||
|
return: ; preds = %entry
|
||||||
|
%retval2 = load i32* %retval ; <i32> [#uses=1]
|
||||||
|
ret i32 %retval2
|
||||||
|
}
|
Loading…
x
Reference in New Issue
Block a user