https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85288
Bug ID: 85288
Summary: profiledbootstrap failure on aarch with
-freorder-blocks-and-partition; bogus warning with
--save-temps
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
Target Milestone: ---
I get:
/home/jh/trunk/build/./prev-gcc/xg++ -B/home/jh/trunk/build/./prev-gcc/
-B/usr/local/aarch64-unknown-linux-gnu/bin/ -nostdinc++
-B/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/include/aarch64-unknown-linux-gnu
-I/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/include
-I/home/jh/trunk/libstdc++-v3/libsupc++
-L/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -DIN_GCC_FRONTEND -g -O2 -gtoggle -fprofile-generate -DIN_GCC
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-fno-common -DHAVE_CONFIG_H -I. -Ic -I../../gcc -I../../gcc/c
-I../../gcc/../include -I../../gcc/../libcpp/include
-I/home/jh/trunk/build/./gmp -I/home/jh/trunk/gmp
-I/home/jh/trunk/build/./mpfr/src -I/home/jh/trunk/mpfr/src
-I/home/jh/trunk/mpc/src -I../../gcc/../libdecnumber
-I../../gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/../libbacktrace
-I/home/jh/trunk/build/./isl/include -I/home/jh/trunk/isl/include -o
c/c-fold.o -MT c/c-fold.o -MMD -MP -MF c/.deps/c-fold.TPo ../../gcc/c/c-fold.c
/tmp/ccwQvHyu.s: Assembler messages:
/tmp/ccwQvHyu.s:2546: Error: invalid operands (.text.unlikely and .text
sections) for `-'
It is
.2byte (.L310 - .Lrtx311) / 4
L310 is in cold section while Lrtx311 is in hot section. So perhaps we want to
rule out tablejumps crossing partition bounaries?
while trying to profiledbootstrap with block partitioning. Curiously enough
also adding --save-temps provoke warning:
/home/jh/trunk/build/./prev-gcc/xg++ -B/home/jh/trunk/build/./prev-gcc/
-B/usr/local/aarch64-unknown-linux-gnu/bin/ -nostdinc++
-B/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/include/aarch64-unknown-linux-gnu
-I/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/include
-I/home/jh/trunk/libstdc++-v3/libsupc++
-L/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/home/jh/trunk/build/prev-aarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -DIN_GCC_FRONTEND -g -O2 -gtoggle -fprofile-generate -DIN_GCC
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-fno-common -DHAVE_CONFIG_H -I. -Ic -I../../gcc -I../../gcc/c
-I../../gcc/../include -I../../gcc/../libcpp/include
-I/home/jh/trunk/build/./gmp -I/home/jh/trunk/gmp
-I/home/jh/trunk/build/./mpfr/src -I/home/jh/trunk/mpfr/src
-I/home/jh/trunk/mpc/src -I../../gcc/../libdecnumber
-I../../gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/../libbacktrace
-I/home/jh/trunk/build/./isl/include -I/home/jh/trunk/isl/include -o
c/c-fold.o -MT c/c-fold.o -MMD -MP -MF c/.deps/c-fold.TPo ../../gcc/c/c-fold.c
--save-temps
../../gcc/c/c-fold.c: In function ‘tree_node* c_fully_fold_internal(tree, bool,
bool*, bool*, bool, bool)’:
../../gcc/c/c-fold.c:313:16: error: this statement may fall through
[-Werror=implicit-fallthrough=]
op0_lval = true;
~~~~~~~~~^~~~~~
../../gcc/c/c-fold.c:315:5: note: here
case COMPOUND_EXPR:
^~~~
../../gcc/c/c-fold.c:446:16: error: this statement may fall through
[-Werror=implicit-fallthrough=]
op0_lval = lval;
~~~~~~~~~^~~~~~
../../gcc/c/c-fold.c:448:5: note: here
case INDIRECT_REF:
^~~~
this warning is not dispyed without --save-temps. (note that this is
profiledbootstrap build)
