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| author | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-11-21 07:48:49 +0000 |
|---|---|---|
| committer | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-11-21 07:48:49 +0000 |
| commit | f0075e6e2be0ba398f16980216689f4a6e232e3c (patch) | |
| tree | c774c995e556775f66fd907b025e0e61f8f78669 /gcc/configure | |
| parent | 818af1aa699cb6f7ed29b83434730278ddc0afca (diff) | |
S/390: Support vector load/store alignment hints
The IBM z14 POP adds an optional alignment operand to the vl, vst,
vlm, and vstm instruction (vector loads and stores). Vectors residing
on 8 or 16 byte boundaries might get loaded or stored faster on some
models given the instruction uses the proper hint operand. A wrong
hint will hurt performance though.
The attached testcase align-1 currently fails due to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88085
gcc/ChangeLog:
2018-11-21 Andreas Krebbel <krebbel@linux.ibm.com>
* configure.ac: Add check for Binutils to determine whether vector
load/store alignments hints are being supported.
* config.in: Regenerate.
* configure: Regenerate.
* config/s390/s390.c (print_operand): Support new output
modifier A.
* config/s390/s390.md ("movti"): Append alignment hint output
using the new output modifier 'A'.
* config/s390/vector.md ("mov<mode>", "*vec_tf_to_v1tf")
("*vec_ti_to_v1ti"): Likewise.
gcc/testsuite/ChangeLog:
2018-11-21 Andreas Krebbel <krebbel@linux.ibm.com>
* gcc.target/s390/vector/align-1.c: New test.
* gcc.target/s390/vector/align-2.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@266336 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/configure b/gcc/configure index 89573627459..3a20399adba 100755 --- a/gcc/configure +++ b/gcc/configure @@ -27520,6 +27520,42 @@ $as_echo "#define HAVE_AS_ARCHITECTURE_MODIFIERS 1" >>confdefs.h fi + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for vector load/store alignment hints" >&5 +$as_echo_n "checking assembler for vector load/store alignment hints... " >&6; } +if ${gcc_cv_as_s390_vector_loadstore_alignment_hints+:} false; then : + $as_echo_n "(cached) " >&6 +else + gcc_cv_as_s390_vector_loadstore_alignment_hints=no + if test $in_tree_gas = yes; then + if test $gcc_cv_gas_vers -ge `expr \( \( 2 \* 1000 \) + 31 \) \* 1000 + 0` + then gcc_cv_as_s390_vector_loadstore_alignment_hints=yes +fi + elif test x$gcc_cv_as != x; then + $as_echo ' vl %v24,0(%r15),3 ' > conftest.s + if { ac_try='$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_s390_vector_loadstore_alignment_hints=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: $gcc_cv_as_s390_vector_loadstore_alignment_hints" >&5 +$as_echo "$gcc_cv_as_s390_vector_loadstore_alignment_hints" >&6; } +if test $gcc_cv_as_s390_vector_loadstore_alignment_hints = yes; then + +$as_echo "#define HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS 1" >>confdefs.h + +fi + + ;; esac |