Codegen:
as: _bar: pushl %esi subl $8, %esp movl 16(%esp), %esi call L_foo$stub fstps (%esi) addl $8, %esp popl %esi #FP_REG_KILL ret instead of: _bar: pushl %esi subl $8, %esp movl 16(%esp), %esi call L_foo$stub fstpl (%esi) cvtsd2ss (%esi), %xmm0 movss %xmm0, (%esi) addl $8, %esp popl %esi #FP_REG_KILL ret llvm-svn: 45401
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