Fix for PR1831: if all defs of an interval are re-materializable, then it's a preferred spill candiate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44644 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/ARM/lsr-code-insertion.ll

@@ -1,4 +1,5 @@
-; RUN: llvm-as < %s | llc -stats |& grep {40.*Number of machine instrs printed}
+; RUN: llvm-as < %s | llc -stats |& grep {39.*Number of machine instrs printed}
+; RUN: llvm-as < %s | llc -stats |& grep {.*Number of re-materialization}
 ; This test really wants to check that the resultant "cond_true" block only 
 ; has a single store in it, and that cond_true55 only has code to materialize 
 ; the constant and do a store.  We do *not* want something like this:
@@ -7,7 +8,6 @@
 ;        add r8, r0, r6
 ;        str r10, [r8, #+4]
 ;
-; XFAIL: *
 target triple = "arm-apple-darwin8"
 
 define void @foo(i32* %mc, i32* %mpp, i32* %ip, i32* %dpp, i32* %tpmm, i32 %M, i32* %tpim, i32* %tpdm, i32* %bp, i32* %ms, i32 %xmb) {