Followup on Proposal to move MIR physical register namespace to '$' sigil.

Discussed here:

http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html

In preparation for adding support for named vregs we are changing the sigil for
physical registers in MIR to '$' from '%'. This will prevent name clashes of
named physical register with named vregs.

llvm-svn: 323922
diff --git a/llvm/test/DebugInfo/X86/sdag-split-arg.ll b/llvm/test/DebugInfo/X86/sdag-split-arg.ll
index 790b482..e5904e1 100644
--- a/llvm/test/DebugInfo/X86/sdag-split-arg.ll
+++ b/llvm/test/DebugInfo/X86/sdag-split-arg.ll
@@ -1,10 +1,10 @@
 ; RUN: llc -O0 -filetype=asm %s -o - | FileCheck %s
 ; Test large integral function arguments passed in multiple registers.
-; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 64 16] %ax
-; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 48 16] %r9w
-; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 32 16] %r10w
-; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 16 16] %r11w
-; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 0 16] %bx
+; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 64 16] $ax
+; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 48 16] $r9w
+; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 32 16] $r10w
+; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 16 16] $r11w
+; CHECK: DEBUG_VALUE: foo:bar <- [DW_OP_LLVM_fragment 0 16] $bx
 
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-unknown"