Chris Lattner d7648c8934 Turn a series of extract_element's feeding a build_vector into a ... vector_shuffle node. For this: void test(__m128 *res, __m128 *A, __m128 *B) { *res = _mm_unpacklo_ps(*A, *B); } we now produce this code: _test: movl 8(%esp), %eax movaps (%eax), %xmm0 movl 12(%esp), %eax unpcklps (%eax), %xmm0 movl 4(%esp), %eax movaps %xmm0, (%eax) ret instead of this: _test: subl $76, %esp movl 88(%esp), %eax movaps (%eax), %xmm0 movaps %xmm0, (%esp) movaps %xmm0, 32(%esp) movss 4(%esp), %xmm0 movss 32(%esp), %xmm1 unpcklps %xmm0, %xmm1 movl 84(%esp), %eax movaps (%eax), %xmm0 movaps %xmm0, 16(%esp) movaps %xmm0, 48(%esp) movss 20(%esp), %xmm0 movss 48(%esp), %xmm2 unpcklps %xmm0, %xmm2 unpcklps %xmm1, %xmm2 movl 80(%esp), %eax movaps %xmm2, (%eax) addl $76, %esp ret GCC produces this (with -fomit-frame-pointer): _test: subl $12, %esp movl 20(%esp), %eax movaps (%eax), %xmm0 movl 24(%esp), %eax unpcklps (%eax), %xmm0 movl 16(%esp), %eax movaps %xmm0, (%eax) addl $12, %esp ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27233 91177308-0d34-0410-b5e6-96231b3b80d8		2006-03-28 20:28:38 +00:00
..
DAGCombiner.cpp	Turn a series of extract_element's feeding a build_vector into a	2006-03-28 20:28:38 +00:00
LegalizeDAG.cpp	Teach Legalize how to pack VVECTOR_SHUFFLE nodes into VECTOR_SHUFFLE nodes.	2006-03-28 20:24:43 +00:00
Makefile
ScheduleDAG.cpp	fix spello	2006-03-24 07:15:07 +00:00
ScheduleDAGList.cpp	Don't advance the hazard recognizer when there are no hazards and no instructions	2006-03-12 09:01:41 +00:00
ScheduleDAGSimple.cpp	Move simple-selector-specific types to the simple selector.	2006-03-10 07:51:18 +00:00
SelectionDAG.cpp	new node	2006-03-28 19:54:42 +00:00
SelectionDAGISel.cpp	More bulletproofing of llvm.dbg.declare.	2006-03-28 13:45:20 +00:00
SelectionDAGPrinter.cpp	print arbitrary constant pool entries	2006-03-05 09:38:03 +00:00
TargetLowering.cpp	Typo	2006-03-23 23:24:51 +00:00