From 7ea1ab5f41299563eb648aed159cfaff09e774d8 Mon Sep 17 00:00:00 2001
From: Kalle Raiskila <kalle.raiskila@nokia.com>
Date: Fri, 12 Nov 2010 10:14:03 +0000
Subject: Fix memory access lowering on SPU, adding support for the case where
 alignment<value size.

These cases were silently miscompiled before this patch.
Now they are overly verbose -especially storing is- and
any front-end should still avoid misaligned memory
accesses as much as possible. The bit juggling algorithm
added here probably has some room for improvement still.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118889 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/CellSPU/SPUNodes.td | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'lib/Target/CellSPU/SPUNodes.td')

diff --git a/lib/Target/CellSPU/SPUNodes.td b/lib/Target/CellSPU/SPUNodes.td
index 647da30..dc3dc8c 100644
--- a/lib/Target/CellSPU/SPUNodes.td
+++ b/lib/Target/CellSPU/SPUNodes.td
@@ -83,10 +83,6 @@ def SPUcntb : SDNode<"SPUISD::CNTB", SDTIntUnaryOp>;
 // SPUISelLowering.h):
 def SPUshuffle: SDNode<"SPUISD::SHUFB", SDT_SPUshuffle, []>;
 
-// Shift left quadword by bits and bytes
-def SPUshlquad_l_bits: SDNode<"SPUISD::SHLQUAD_L_BITS", SPUvecshift_type, []>;
-def SPUshlquad_l_bytes: SDNode<"SPUISD::SHLQUAD_L_BYTES", SPUvecshift_type, []>;
-
 // Vector shifts (ISD::SHL,SRL,SRA are for _integers_ only):
 def SPUvec_shl: SDNode<"ISD::SHL", SPUvecshift_type, []>;
 def SPUvec_srl: SDNode<"ISD::SRL", SPUvecshift_type, []>;
@@ -105,6 +101,12 @@ def SPUrotbytes_left: SDNode<"SPUISD::ROTBYTES_LEFT",
 def SPUrotbytes_left_bits : SDNode<"SPUISD::ROTBYTES_LEFT_BITS",
                                    SPUvecshift_type>;
 
+// Shift entire quad left by bytes/bits. Zeros are shifted in on the right
+// SHL_BITS the same as SHL for i128, but ISD::SHL is not implemented for i128
+def SPUshlquad_l_bytes: SDNode<"SPUISD::SHL_BYTES", SPUvecshift_type, []>;
+def SPUshlquad_l_bits: SDNode<"SPUISD::SHL_BITS", SPUvecshift_type, []>;
+def SPUsrl_bytes: SDNode<"SPUISD::SRL_BYTES", SPUvecshift_type, []>;
+
 // SPU form select mask for bytes, immediate
 def SPUselmask: SDNode<"SPUISD::SELECT_MASK", SPUselmask_type, []>;
 
-- 
cgit v1.1