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author | Xi Ruoyao <xry111@xry111.site> | 2022-07-26 21:46:20 +0800 |
---|---|---|
committer | Xi Ruoyao <xry111@xry111.site> | 2022-07-27 10:19:55 +0800 |
commit | 66434729a79dfa2d9790aadeca7082511c387980 (patch) | |
tree | 212f0639bda831a62d4e61c4360b0bd60f6b4173 | |
parent | fd96c4b51a733f72fa567a96c253fb3ddf11bd2a (diff) | |
download | gcc-66434729a79dfa2d9790aadeca7082511c387980.zip gcc-66434729a79dfa2d9790aadeca7082511c387980.tar.gz gcc-66434729a79dfa2d9790aadeca7082511c387980.tar.bz2 |
LoongArch: adjust the default of -mexplicit-relocs by checking gas feature
The assembly produced with -mexplicit-relocs is not supported by gas <=
2.39. Check if the assembler supports explicit relocations and set the
default accordingly.
gcc/ChangeLog:
* configure.ac (HAVE_AS_EXPLICIT_RELOCS): Define to 1 if the
assembler supports explicit relocation for LoongArch.
* configure: Regenerate.
* config/loongarch/loongarch-opts.h (HAVE_AS_EXPLICIT_RELOCS):
Define to 0 if not defined.
* config/loongarch/genopts/loongarch.opt.in
(TARGET_EXPLICIT_RELOCS): Default to HAVE_AS_EXPLICIT_RELOCS.
* config/loongarch/loongarch.opt: Regenerate.
-rw-r--r-- | gcc/config/loongarch/genopts/loongarch.opt.in | 2 | ||||
-rw-r--r-- | gcc/config/loongarch/loongarch-opts.h | 4 | ||||
-rw-r--r-- | gcc/config/loongarch/loongarch.opt | 2 | ||||
-rwxr-xr-x | gcc/configure | 37 | ||||
-rw-r--r-- | gcc/configure.ac | 7 |
5 files changed, 46 insertions, 6 deletions
diff --git a/gcc/config/loongarch/genopts/loongarch.opt.in b/gcc/config/loongarch/genopts/loongarch.opt.in index 6f39500..a571b6b 100644 --- a/gcc/config/loongarch/genopts/loongarch.opt.in +++ b/gcc/config/loongarch/genopts/loongarch.opt.in @@ -155,7 +155,7 @@ Target Joined RejectNegative UInteger Var(loongarch_max_inline_memcpy_size) Init -mmax-inline-memcpy-size=SIZE Set the max size of memcpy to inline, default is 1024. mexplicit-relocs -Target Var(TARGET_EXPLICIT_RELOCS) Init(1) +Target Var(TARGET_EXPLICIT_RELOCS) Init(HAVE_AS_EXPLICIT_RELOCS) Use %reloc() assembly operators. ; The code model option names for -mcmodel. diff --git a/gcc/config/loongarch/loongarch-opts.h b/gcc/config/loongarch/loongarch-opts.h index eaa6fc0..da24ecd 100644 --- a/gcc/config/loongarch/loongarch-opts.h +++ b/gcc/config/loongarch/loongarch-opts.h @@ -87,4 +87,8 @@ loongarch_config_target (struct loongarch_target *target, while -m[no]-memcpy imposes a global constraint. */ #define TARGET_DO_OPTIMIZE_BLOCK_MOVE_P loongarch_do_optimize_block_move_p() +#ifndef HAVE_AS_EXPLICIT_RELOCS +#define HAVE_AS_EXPLICIT_RELOCS 0 +#endif + #endif /* LOONGARCH_OPTS_H */ diff --git a/gcc/config/loongarch/loongarch.opt b/gcc/config/loongarch/loongarch.opt index 7a8c5b4..9df7e18 100644 --- a/gcc/config/loongarch/loongarch.opt +++ b/gcc/config/loongarch/loongarch.opt @@ -162,7 +162,7 @@ Target Joined RejectNegative UInteger Var(loongarch_max_inline_memcpy_size) Init -mmax-inline-memcpy-size=SIZE Set the max size of memcpy to inline, default is 1024. mexplicit-relocs -Target Var(TARGET_EXPLICIT_RELOCS) Init(1) +Target Var(TARGET_EXPLICIT_RELOCS) Init(HAVE_AS_EXPLICIT_RELOCS) Use %reloc() assembly operators. ; The code model option names for -mcmodel. diff --git a/gcc/configure b/gcc/configure index 62872d1..7eb9479 100755 --- a/gcc/configure +++ b/gcc/configure @@ -19674,7 +19674,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 19679 "configure" +#line 19677 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -19780,7 +19780,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 19785 "configure" +#line 19783 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -28771,7 +28771,7 @@ $as_echo "#define HAVE_AS_MARCH_ZIFENCEI 1" >>confdefs.h fi ;; - loongarch*-*-*) + loongarch*-*-*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for .dtprelword support" >&5 $as_echo_n "checking assembler for .dtprelword support... " >&6; } if ${gcc_cv_as_loongarch_dtprelword+:} false; then : @@ -28807,6 +28807,37 @@ if test $gcc_cv_as_loongarch_dtprelword != yes; then $as_echo "#define HAVE_AS_DTPRELWORD 1" >>confdefs.h fi + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for explicit relocation support" >&5 +$as_echo_n "checking assembler for explicit relocation support... " >&6; } +if ${gcc_cv_as_loongarch_explicit_relocs+:} false; then : + $as_echo_n "(cached) " >&6 +else + gcc_cv_as_loongarch_explicit_relocs=no + if test x$gcc_cv_as != x; then + $as_echo 'a:pcalau12i $t0,%pc_hi20(a)' > conftest.s + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } + then + gcc_cv_as_loongarch_explicit_relocs=yes + else + echo "configure: failed program was" >&5 + cat conftest.s >&5 + fi + rm -f conftest.o conftest.s + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_loongarch_explicit_relocs" >&5 +$as_echo "$gcc_cv_as_loongarch_explicit_relocs" >&6; } +if test $gcc_cv_as_loongarch_explicit_relocs = yes; then + +$as_echo "#define HAVE_AS_EXPLICIT_RELOCS 1" >>confdefs.h + +fi + ;; s390*-*-*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for .gnu_attribute support" >&5 diff --git a/gcc/configure.ac b/gcc/configure.ac index 4467473..e5f708c 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -5287,7 +5287,7 @@ configured with --enable-newlib-nano-formatted-io.]) [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1, [Define if the assembler understands -march=rv*_zifencei.])]) ;; - loongarch*-*-*) + loongarch*-*-*) gcc_GAS_CHECK_FEATURE([.dtprelword support], gcc_cv_as_loongarch_dtprelword, [2,18,0],, [.section .tdata,"awT",@progbits @@ -5297,6 +5297,11 @@ x: .dtprelword x+0x8000],, [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, [Define if your assembler supports .dtprelword.])]) + gcc_GAS_CHECK_FEATURE([explicit relocation support], + gcc_cv_as_loongarch_explicit_relocs,, + [a:pcalau12i $t0,%pc_hi20(a)],, + [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, + [Define if your assembler supports explicit relocation.])]) ;; s390*-*-*) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], |