Associate a MemOperand with LDWCP nodes introduced during ISel.

This information is required if we want LDWCP to be hoisted out of loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139495 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/XCore/licm-ldwcp.ll

@@ -0,0 +1,18 @@
+; RUN: llc < %s -march=xcore -asm-verbose=0 | FileCheck %s
+
+; MachineLICM should hoist the LDWCP out of the loop.
+
+; CHECK: f:
+; CHECK-NEXT: ldw [[REG:r[0-9]+]], cp[.LCPI0_0]
+; CHECK-NEXT: .LBB0_1:
+; CHECK-NEXT: stw [[REG]], r0[0]
+; CHECK-NEXT: bu .LBB0_1
+
+define void @f(i32* nocapture %p) noreturn nounwind {
+entry:
+  br label %bb
+
+bb:                                               ; preds = %bb, %entry
+  volatile store i32 525509670, i32* %p, align 4
+  br label %bb
+}