https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64895
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
--- Comment #15 from Iain Sandoe <iains at gcc dot gnu.org> ---
(IIUC the thread here) It looks to me that the codegen is now DTRT for both pic
and non pic.
Darwin is doing pic by default, so sees XPASSes
There is no Linux pic test (so the change was not noticed there):
(I will produce a patch for the tests on the basis that this is now fixed).
Linux x86-64 (r271505):
Running target unix/-fpic/-m32
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/iains/gcc-trunk/src-local/gcc/testsuite/config/default.exp as
tool-and-target-specific interface file.
Running /home/iains/gcc-trunk/src-local/gcc/testsuite/gcc.target/i386/i386.exp
...
XPASS: gcc.target/i386/fuse-caller-save-rec.c scan-assembler-not push
XPASS: gcc.target/i386/fuse-caller-save-rec.c scan-assembler-not pop
XPASS: gcc.target/i386/fuse-caller-save-rec.c scan-assembler-times
addl\t%[re]?dx, %[re]?ax 1
FAIL: gcc.target/i386/fuse-caller-save-xmm.c scan-assembler-times
addpd\t\\.?LC0.*, %xmm0 1
XPASS: gcc.target/i386/fuse-caller-save-xmm.c scan-assembler-times
addpd\t%xmm1, %xmm0 1
XPASS: gcc.target/i386/fuse-caller-save.c scan-assembler-not push
XPASS: gcc.target/i386/fuse-caller-save.c scan-assembler-not pop
XPASS: gcc.target/i386/fuse-caller-save.c scan-assembler-times
addl\t%[re]?d[ix], %[re]?ax 1
=== gcc Summary for unix/-fpic/-m64 ===
# of expected passes 18
=====
code output below - Darwin produces the same (or equivalent, for m32/pic).
=====
(extraneous lines snipped for clarity)
fuse-caller-save-rec.c -O2 -fipa-ra -fomit-frame-pointer
-fno-optimize-sibling-calls -mregparm=1 -m32 -S {,-fpic}
bar:
cmpl $4, %eax
jg .L9
xorl %eax, %eax
ret
.L9:
subl $12, %esp
subl $3, %eax
call bar
addl $12, %esp
ret
foo:
subl $12, %esp
movl %eax, %edx
call bar
addl $12, %esp
addl %edx, %eax
ret
=====
fuse-caller-save.c -O2 -fipa-ra -fomit-frame-pointer -mregparm=1 -m32 -S
{,-fpic}
bar:
addl $3, %eax
ret
foo:
movl %eax, %edx
call bar
addl %edx, %eax
ret
=====
fuse-caller-save-xmm.c -O2 -fipa-ra -fomit-frame-pointer -msse2 -mno-avx -m32
-S
bar:
addpd .LC0, %xmm0
ret
foo:
subl $12, %esp
movapd %xmm0, %xmm1
call bar
addl $12, %esp
addpd %xmm1, %xmm0
ret
fuse-caller-save-xmm.c -O2 -fipa-ra -fomit-frame-pointer -msse2 -mno-avx -m32
-S -fpic
bar:
call __x86.get_pc_thunk.ax
addl $_GLOBAL_OFFSET_TABLE_, %eax
movapd .LC0@GOTOFF(%eax), %xmm1
addpd %xmm1, %xmm0
ret
foo:
subl $12, %esp
movapd %xmm0, %xmm2
call bar
addl $12, %esp
addpd %xmm2, %xmm0
ret
