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8316893: Compile without -fno-delete-null-pointer-checks

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Reviewed-by: kbarrett, erikj
This commit is contained in:
Daniel Jeliński 2023-10-03 05:54:33 +00:00
parent 26c21f50a3
commit 287b243221
1 changed files with 3 additions and 17 deletions
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20
make/autoconf/flags-cflags.m4
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@ -799,15 +799,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
$1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
$1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG],
PREFIX: $3,
IF_FALSE: [
NO_DELETE_NULL_POINTER_CHECKS_CFLAG=
]
)
$1_TOOLCHAIN_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG}"
fi
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
@ -929,17 +920,12 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
# $2 - Prefix for compiler variables (either BUILD_ or nothing).
AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
[
# These flags are required for GCC 6 builds as undefined behavior in OpenJDK code
# runs afoul of the more aggressive versions of these optimizations.
# Notably, value range propagation now assumes that the this pointer of C++
# member functions is non-null.
NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG],
PREFIX: $2, IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
# This flag is required for GCC 6 builds as undefined behavior in OpenJDK code
# runs afoul of the more aggressive versions of this optimization.
NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG],
PREFIX: $2, IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
$1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
$1_GCC6_CFLAGS="${NO_LIFETIME_DSE_CFLAG}"
])
AC_DEFUN_ONCE([FLAGS_SETUP_BRANCH_PROTECTION],