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gcc/configure.ac: fix register issue for global_load assembler functions

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gcc/ChangeLog:

	* config.in: Regenerate.
	* config/gcn/gcn.c (print_operand_address): Fix for global_load assembler
	functions.
	* configure: Regenerate.
	* configure.ac: Fix for global_load assembler functions.

(cherry picked from commit cfa1f8226f)
This commit is contained in:
Marcel Vollweiler 2021-06-18 04:50:36 -07:00 committed by Tobias Burnus
parent 64b2bd684f
commit e85d6ef1c4
4 changed files with 68 additions and 4 deletions
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6
gcc/config.in
View File

@ -1438,6 +1438,12 @@
#endif
/* Define if your assembler has fixed global_load functions. */
#ifndef USED_FOR_TARGET
#undef HAVE_GCN_ASM_GLOBAL_LOAD_FIXED
#endif
/* Define to 1 if you have the `getchar_unlocked' function. */
#ifndef USED_FOR_TARGET
#undef HAVE_GETCHAR_UNLOCKED

17
gcc/config/gcn/gcn.c
View File

@ -5481,13 +5481,22 @@ print_operand_address (FILE *file, rtx mem)
if (vgpr_offset == NULL_RTX)
/* In this case, the vector offset is zero, so we use the first
lane of v1, which is initialized to zero. */
fprintf (file, "v[1:2]");
{
if (HAVE_GCN_ASM_GLOBAL_LOAD_FIXED)
fprintf (file, "v1");
else
fprintf (file, "v[1:2]");
}
else if (REG_P (vgpr_offset)
&& VGPR_REGNO_P (REGNO (vgpr_offset)))
{
fprintf (file, "v[%d:%d]",
REGNO (vgpr_offset) - FIRST_VGPR_REG,
REGNO (vgpr_offset) - FIRST_VGPR_REG + 1);
if (HAVE_GCN_ASM_GLOBAL_LOAD_FIXED)
fprintf (file, "v%d",
REGNO (vgpr_offset) - FIRST_VGPR_REG);
else
fprintf (file, "v[%d:%d]",
REGNO (vgpr_offset) - FIRST_VGPR_REG,
REGNO (vgpr_offset) - FIRST_VGPR_REG + 1);
}
else
output_operand_lossage ("bad ADDR_SPACE_GLOBAL address");

27
gcc/configure vendored
View File

@ -28891,6 +28891,33 @@ case "$target" in
;;
esac
# This tests if the assembler supports two registers for global_load functions
# (like in LLVM versions <12) or one register (like in LLVM 12).
case "$target" in
amdgcn-* | gcn-*)
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler fix for global_load functions" >&5
$as_echo_n "checking assembler fix for global_load functions... " >&6; }
gcc_cv_as_gcn_global_load_fixed=yes
if test x$gcc_cv_as != x; then
cat > conftest.s <<EOF
global_store_dwordx2 v[1:2], v[4:5], s[14:15]
EOF
if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
gcc_cv_as_gcn_global_load_fixed=no
fi
rm -f conftest.s conftest.o conftest
fi
global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
cat >>confdefs.h <<_ACEOF
#define HAVE_GCN_ASM_GLOBAL_LOAD_FIXED $global_load_fixed
_ACEOF
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_gcn_global_load_fixed" >&5
$as_echo "$gcc_cv_as_gcn_global_load_fixed" >&6; }
;;
esac
# ??? Not all targets support dwarf2 debug_line, even within a version
# of gas. Moreover, we need to emit a valid instruction to trigger any
# info to the output file. So, as supported targets are added to gas 2.11,

22
gcc/configure.ac
View File

@ -5348,6 +5348,28 @@ case "$target" in
;;
esac
# This tests if the assembler supports two registers for global_load functions
# (like in LLVM versions <12) or one register (like in LLVM 12).
case "$target" in
amdgcn-* | gcn-*)
AC_MSG_CHECKING(assembler fix for global_load functions)
gcc_cv_as_gcn_global_load_fixed=yes
if test x$gcc_cv_as != x; then
cat > conftest.s <<EOF
global_store_dwordx2 v[[1:2]], v[[4:5]], s[[14:15]]
EOF
if $gcc_cv_as -triple=amdgcn--amdhsa -filetype=obj -mcpu=gfx900 -o conftest.o conftest.s > /dev/null 2>&1; then
gcc_cv_as_gcn_global_load_fixed=no
fi
rm -f conftest.s conftest.o conftest
fi
global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed,
[Define if your assembler has fixed global_load functions.])
AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed)
;;
esac
# ??? Not all targets support dwarf2 debug_line, even within a version
# of gas. Moreover, we need to emit a valid instruction to trigger any
# info to the output file. So, as supported targets are added to gas 2.11,