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Subject: [Bug target/44948] -msse/-mavx change ABI
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------- Comment #19 from hjl dot tools at gmail dot com  2010-07-16 13:41 -------
Created an attachment (id=21223)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21223&action=view)
A patch with psABI warning

This patch changes and warns psABI:

[hjl@gnu-6 case3]$ make
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -m32 -g -O -msse2   -c -o x.o
x.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -m32 -g -O -mno-sse   -c -o
main.o main.c
main.c: In function ‘main’:
main.c:7:7: note: The ABI of passing parameter with 16byte or greater alignment
has changed in GCC 4.6
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -m32 -g -O -o x x.o main.o
./x
[hjl@gnu-6 case2]$ make
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O -mavx   -c -o x.o x.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O   -c -o main.o main.c
main.c: In function ‘main’:
main.c:7:7: note: The ABI of passing parameter with 16byte or greater alignment
has changed in GCC 4.6
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -O -o x x.o main.o
./x
[hjl@gnu-6 case2]$ 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44948