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Description of problem:
Rebuilding valgrind from SRPM fails with compiler messages:
error: unknown register name 'mm0' in 'asm'

Version-Release number of selected component (if applicable):
valgrind-2.4.0-2

How reproducible:
Always

Steps to Reproduce:
1. rpm --install valgrind-2.4.0-2.src.rpm
2. cd SPECS; rpmbuild -ba valgrind.spec
3.
  

Actual Results:       ...
/usr/bin/perl ./gen_insn_test.pl < insn_fpu.def > insn_fpu.c
if gcc -DHAVE_CONFIG_H -I. -I. -I../../..     -Winline -Wall -Wshadow -g -I../../../include -Wno-long-long -Wno-pointer-sign -MT insn_fpu.o -MD -MP -MF ".deps/insn_fpu.Tpo" -c -o insn_fpu.o insn_fpu.c; \
then mv -f ".deps/insn_fpu.Tpo" ".deps/insn_fpu.Po"; else rm -f ".deps/insn_fpu.Tpo"; exit 1; fi
insn_fpu.c: In function 'faddl_1':
insn_fpu.c:383: error: unknown register name 'mm0' in 'asm'
insn_fpu.c: In function 'faddl_2':
insn_fpu.c:421: error: unknown register name 'mm0' in 'asm'
     ...
make[5]: *** [insn_fpu.o] Error 1




Expected Results:  Successful build.

Additional info: