X86 target specific DAG combine: turn build_vector (load x), (load x+4),
(load x+8), (load x+12), <0, 1, 2, 3> to a single 128-bit load (aligned and
unaligned).
e.g.
__m128 test(float a, float b, float c, float d) {
return _mm_set_ps(d, c, b, a);
}
_test:
movups 4(%esp), %xmm0
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29042 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.h b/lib/Target/X86/X86ISelLowering.h
index af9466d..0dea459 100644
--- a/lib/Target/X86/X86ISelLowering.h
+++ b/lib/Target/X86/X86ISelLowering.h
@@ -138,6 +138,10 @@
/// operands as a normal load.
LOAD_PACK,
+ /// LOAD_UA Load an unaligned 128-bit value. It has the same operands as
+ /// a normal load.
+ LOAD_UA,
+
/// GlobalBaseReg - On Darwin, this node represents the result of the popl
/// at function entry, used for PIC code.
GlobalBaseReg,
@@ -286,6 +290,8 @@
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG);
+ virtual SDOperand PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+
virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,
MachineBasicBlock *MBB);