Chris Lattner 4ca9cbb170 Eliminate useless insertelement instructions. This implements ... Transforms/InstCombine/vec_insertelt.ll and fixes PR1286. We now compile the code from that bug into: _foo: movl 4(%esp), %eax movdqa (%eax), %xmm0 movl 8(%esp), %ecx psllw (%ecx), %xmm0 movdqa %xmm0, (%eax) ret instead of: _foo: subl $4, %esp movl %ebp, (%esp) movl %esp, %ebp movl 12(%ebp), %eax movdqa (%eax), %xmm0 #IMPLICIT_DEF %eax pinsrw $2, %eax, %xmm0 xorl %ecx, %ecx pinsrw $3, %ecx, %xmm0 pinsrw $4, %eax, %xmm0 pinsrw $5, %ecx, %xmm0 pinsrw $6, %eax, %xmm0 pinsrw $7, %ecx, %xmm0 movl 8(%ebp), %eax movdqa (%eax), %xmm1 psllw %xmm0, %xmm1 movdqa %xmm1, (%eax) movl %ebp, %esp popl %ebp ret woo :) llvm-svn: 35788		2007-04-09 01:11:16 +00:00
llvm	Eliminate useless insertelement instructions. This implements	2007-04-09 01:11:16 +00:00
stacker	Make this compile again by abandoning partially completed makefile work.	2007-04-05 16:19:25 +00:00