在 2023/11/20 上午9:51, Xi Ruoyao 写道:
On Mon, 2023-11-20 at 09:09 +0800, chenglulu wrote:
在 2023/11/19 上午1:24, Xi Ruoyao 写道:
On Sat, 2023-11-18 at 16:16 +0800, chenglulu wrote:
Pushed to r14-5567.
在 2023/11/16 下午3:27, Lulu Cheng 写道:
When compiling with '-mcmodel=medium', the function call is made through
'pcaddu18i+jirl' if binutils supports call36, otherwise the
native implementation 'pcalau12i+jirl' is used.
gcc/ChangeLog:
* config.in: Regenerate.
* config/loongarch/loongarch-opts.h (HAVE_AS_SUPPORT_CALL36): Define
macro.
* config/loongarch/loongarch.cc (loongarch_legitimize_call_address):
If binutils supports call36, the function call is not split over expand.
* config/loongarch/loongarch.md: Add call36 generation code.
* config/loongarch/predicates.md: Likewise.
* configure: Regenerate.
* configure.ac: Check whether binutils supports call36.
With this change I get some test failures with "old" Binutils 2.41:
FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler
test:.*la.global\\t.*g\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler
test1:.*la.global\\t.*f\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-1.c scan-assembler
test2:.*la.local\\t.*l\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler
test:.*la.global\\t.*g\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler
test1:.*la.local\\t.*f\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-2.c scan-assembler
test2:.*la.local\\t.*l\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-3.c scan-assembler
test2:.*la.local\\t.*l\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-4.c scan-assembler
test1:.*la.local\\t.*f\\n\\tjirl
FAIL: gcc.target/loongarch/func-call-medium-4.c scan-assembler
test2:.*la.local\\t.*l\\n\\tjirl
Some strange thing is happening: with -mexplicit-relocs=auto or always I
get pcalau12i + jirl as expected, but with -mexplicit-relocs=none I get
"pcaddu18i $r1,%call36(g)" and jirl. This seems irony (!).
Thank you for the revision.
Then I'll push
https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637153.html if
this is an approval?
OK. Thanks.
